/**
 * AI Study Assistant Pro — Premium Educational SaaS Theme
 * CSS variables only. Light / Dark via html[data-theme].
 */

/* System fonts for faster load (no Google Fonts blocking) */
html[data-theme="light"],
html[data-theme="dark"],
html:not([data-theme]) {
    --icon-math: #2563EB;
    --icon-english: #7C3AED;
    --icon-camera-scan: #06B6D4;
    --icon-ai-teacher: #F59E0B;
    --icon-quiz: #22C55E;
    --icon-study-planner: #EC4899;
    --icon-voice-tutor: #8B5CF6;
    --icon-weakness: #EF4444;
    --icon-notebook: #14B8A6;
    --icon-parent: #0EA5E9;

    --transition: 300ms ease;
    --radius: 14px;
    --radius-lg: 18px;
    --card-hover-shadow: 0 15px 35px rgba(59, 130, 246, 0.15);
    --button-hover-shadow: 0 10px 25px rgba(37, 99, 235, 0.25);
    --sidebar-hover-bg: rgba(59, 130, 246, 0.12);
    --menu-active-bg: linear-gradient(90deg, rgba(37, 99, 235, 0.18), rgba(124, 58, 237, 0.18));
    --text-on-gradient: #FFFFFF;
}

/* ===== LIGHT THEME ===== */
html[data-theme="light"],
html:not([data-theme]) {
    --bg: #F8FAFC;
    --section-bg: #FFFFFF;
    --card-bg: #FFFFFF;
    --card-hover-bg: #F8FBFF;
    --card-border: #E2E8F0;
    --card-hover-border: #60A5FA;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --heading: #1E293B;
    --primary: #2563EB;
    --primary-hover: #1D4ED8;
    --secondary: #7C3AED;
    --secondary-hover: #6D28D9;
    --success: #16A34A;
    --success-bg: #ECFDF3;
    --success-border: #BBF7D0;
    --warning: #D97706;
    --danger: #DC2626;
    --danger-bg: #FEF2F2;
    --danger-border: #FECACA;
    --input-bg: #FFFFFF;
    --input-border: #CBD5E1;
    --button-gradient: linear-gradient(135deg, #2563EB 0%, #4F46E5 50%, #7C3AED 100%);
    --button-hover-gradient: linear-gradient(135deg, #1D4ED8 0%, #4338CA 50%, #6D28D9 100%);
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    --shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.08);
    --glow: none;
    --hero-bg: linear-gradient(135deg, rgba(37, 99, 235, 0.06) 0%, rgba(124, 58, 237, 0.05) 100%);
    --card-active-bg: #EEF4FF;
    --card-active-border: #60A5FA;
    --theme-btn-border: #93C5FD;
    --logout-btn-border: #FDA4AF;
    --logout-btn-text: #475569;
    --theme-btn-shadow: 0 8px 20px rgba(37, 99, 235, 0.10);
    --logout-btn-shadow: 0 8px 20px rgba(244, 63, 94, 0.12);
    --menu-hover-shadow: 0 14px 30px rgba(37, 99, 235, 0.14);
    --grid-gap: 16px;
    --grid-gap-mobile: 10px;
    --header-radius: 18px;
    --header-radius-mobile: 16px;
    --menu-radius: 18px;
    --menu-radius-mobile: 14px;
    --menu-min-height: 76px;
    --menu-min-height-mobile: 64px;
}

/* ===== DARK THEME ===== */
html[data-theme="dark"] {
    --bg: #050B16;
    --section-bg: #0B1628;
    --card-bg: #101E33;
    --card-hover-bg: #142544;
    --card-border: #1E3A5F;
    --card-hover-border: #38BDF8;
    --text-primary: #FFFFFF;
    --text-secondary: #B8C7E0;
    --heading: #EAF2FF;
    --primary: #38BDF8;
    --primary-hover: #0EA5E9;
    --secondary: #8B5CF6;
    --secondary-hover: #7C3AED;
    --success: #22C55E;
    --success-bg: rgba(34, 197, 94, 0.15);
    --success-border: rgba(34, 197, 94, 0.35);
    --warning: #F59E0B;
    --danger: #EF4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-border: rgba(239, 68, 68, 0.35);
    --input-bg: #0F1B2D;
    --input-border: #233D63;
    --button-gradient: linear-gradient(135deg, #38BDF8 0%, #6366F1 50%, #8B5CF6 100%);
    --button-hover-gradient: linear-gradient(135deg, #0EA5E9 0%, #4F46E5 50%, #7C3AED 100%);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.28);
    --glow: 0 0 25px rgba(56, 189, 248, 0.25);
    --hero-bg: linear-gradient(135deg, rgba(56, 189, 248, 0.08) 0%, rgba(139, 92, 246, 0.07) 100%);
    --card-active-bg: rgba(37, 99, 235, 0.18);
    --card-active-border: #38BDF8;
    --theme-btn-border: rgba(56, 189, 248, 0.45);
    --logout-btn-border: rgba(239, 68, 68, 0.45);
    --logout-btn-text: var(--text-secondary);
    --theme-btn-shadow: 0 8px 20px rgba(56, 189, 248, 0.18);
    --logout-btn-shadow: 0 8px 20px rgba(239, 68, 68, 0.18);
    --menu-hover-shadow: 0 14px 30px rgba(56, 189, 248, 0.18);
    --grid-gap: 16px;
    --grid-gap-mobile: 10px;
    --header-radius: 18px;
    --header-radius-mobile: 16px;
    --menu-radius: 18px;
    --menu-radius-mobile: 14px;
    --menu-min-height: 76px;
    --menu-min-height-mobile: 64px;
    --history-section-border: #38BDF8;
    --history-card-border: #2563EB;
    --history-title: #F8FAFC;
    --history-excerpt: #CBD5E1;
    --history-link-bg: #FFFFFF;
    --history-link-text: #0284C7;
    --history-link-border: #BAE6FD;
    --history-hover-shadow: 0 10px 25px rgba(56, 189, 248, 0.18);
}

/* ===== BASE ===== */
.ai-study-dashboard,
.ai-study-auth-shell {
    font-family: 'Inter', 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
    color: var(--text-primary) !important;
    transition: background var(--transition), color var(--transition);
}

.ai-study-dashboard {
    position: relative;
    isolation: isolate;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
    overflow-x: hidden;
    background: var(--bg) !important;
    box-sizing: border-box;
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

.ai-study-dashboard::before {
    display: none !important;
}

.ai-study-mobile-only {
    display: none;
}

.ai-study-shell {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    min-height: 760px;
    background: var(--section-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow) !important;
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}

html[data-theme="dark"] .ai-study-shell {
    box-shadow: var(--shadow), var(--glow) !important;
}

.ai-study-main {
    background: var(--bg) !important;
    color: var(--text-primary) !important;
    padding: 22px;
    min-width: 0;
}

.ai-study-panel:not(.is-active) {
    display: none !important;
}

/* ===== DESKTOP SIDEBAR ===== */
.ai-study-tabs {
    padding: 14px;
    border-right: 1px solid var(--card-border) !important;
    background: var(--section-bg) !important;
    overflow-y: auto;
    max-height: none;
    transition: background var(--transition);
}

.ai-study-student-profile {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
    padding: 14px;
    background: var(--card-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--radius) !important;
    box-shadow: var(--shadow-soft) !important;
    color: var(--text-primary) !important;
}

.ai-study-student-profile strong {
    color: var(--heading) !important;
    font-weight: 800;
}

.ai-study-student-profile span {
    color: var(--text-secondary) !important;
    font-size: 13px;
}

.ai-study-brand-mark {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 4px;
    line-height: 1;
}

.ai-study-brand-easy {
    color: var(--primary) !important;
    font-style: italic;
    font-size: 22px;
    font-weight: 900;
}

.ai-study-brand-padhai {
    color: var(--warning) !important;
    font-size: 22px;
    font-weight: 900;
}

.ai-study-tabs .ai-theme-toggle {
    width: 100%;
    min-height: 42px;
    margin-bottom: 4px;
    border-radius: 999px;
    border: 1px solid var(--card-border) !important;
    background: var(--card-bg) !important;
    color: var(--text-primary) !important;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: border-color var(--transition), color var(--transition), transform var(--transition) !important;
}

.ai-study-tabs .ai-theme-toggle:hover {
    border-color: var(--card-hover-border) !important;
    color: var(--primary) !important;
    transform: none;
}

.ai-study-tabs .ai-study-logout-button {
    width: 100%;
    min-height: 34px;
    border-radius: 8px;
    border: 1px solid var(--card-border) !important;
    background: var(--card-bg) !important;
    color: var(--text-secondary) !important;
    font-weight: 700;
    cursor: pointer;
    transition: border-color var(--transition), color var(--transition) !important;
}

.ai-study-tabs .ai-study-logout-button:hover {
    border-color: var(--danger) !important;
    color: var(--danger) !important;
    transform: none;
}

.ai-study-tabs .ai-study-tab {
    width: 100%;
    margin: 0 0 6px;
    padding: 10px 12px;
    display: block;
    min-height: auto;
    background: transparent !important;
    border: 1px solid transparent !important;
    border-radius: 10px !important;
    box-shadow: none !important;
    color: var(--text-secondary) !important;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.25;
    text-align: left;
    white-space: normal !important;
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition) !important;
    transform: none !important;
}

.ai-study-tabs .ai-study-tab::before {
    display: none !important;
}

.ai-study-tabs .ai-study-tab:hover {
    background: var(--sidebar-hover-bg) !important;
    color: var(--primary) !important;
    border-color: transparent !important;
    transform: none !important;
    box-shadow: none !important;
}

.ai-study-tabs .ai-study-tab.is-active,
.ai-study-tabs .ai-study-tab.active {
    background: var(--menu-active-bg) !important;
    color: var(--primary) !important;
    border-color: var(--card-hover-border) !important;
    font-weight: 700 !important;
    box-shadow: none !important;
}

.ai-study-tabs .ai-study-tab .icon,
.ai-study-tabs .ai-study-tab .title {
    display: inline;
    font-size: inherit;
}

/* ===== MOBILE HEADER + GRID (hidden on desktop) ===== */
.ai-study-header {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-gap-mobile);
    margin-bottom: 16px;
}

.ai-study-header-card {
    background: var(--card-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--header-radius-mobile) !important;
    padding: 16px;
    box-shadow: var(--shadow-soft) !important;
    min-width: 0;
}

.ai-study-header-title,
.ai-study-header-card h2,
.ai-study-header-card h3 {
    margin: 0 0 14px;
    color: var(--heading) !important;
    font-weight: 800;
    font-size: 1.25rem;
    line-height: 1.2;
}

.ai-study-theme-btn {
    width: 100%;
    min-height: 50px;
    border-radius: 999px;
    border: 1.5px solid var(--theme-btn-border) !important;
    background: var(--card-bg) !important;
    color: var(--primary) !important;
    font-size: 16px;
    font-weight: 800;
    box-shadow: var(--theme-btn-shadow) !important;
    cursor: pointer;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition) !important;
}

.ai-study-theme-btn:hover {
    transform: translateY(-2px);
    border-color: var(--card-hover-border) !important;
}

.ai-study-logout-btn {
    width: 100%;
    min-height: 50px;
    border-radius: 999px;
    border: 1.5px solid var(--logout-btn-border) !important;
    background: var(--card-bg) !important;
    color: var(--logout-btn-text) !important;
    font-size: 16px;
    font-weight: 800;
    box-shadow: var(--logout-btn-shadow) !important;
    cursor: pointer;
    transition: transform var(--transition), border-color var(--transition) !important;
}

.ai-study-logout-btn:hover {
    transform: translateY(-2px);
    border-color: var(--danger) !important;
}

.ai-study-user-name {
    margin: 14px 0 0;
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary) !important;
}

.ai-study-header-card form {
    margin: 0;
}

.ai-study-menu,
.ai-study-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--grid-gap-mobile);
    width: 100%;
    margin-bottom: 16px;
    max-height: min(72vh, 680px);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

.ai-study-menu-card,
.ai-study-feature-card {
    width: 100%;
    min-width: 0;
    min-height: var(--menu-min-height-mobile);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    margin: 0;
    background: var(--card-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--menu-radius-mobile) !important;
    box-shadow: var(--shadow-soft) !important;
    color: var(--text-secondary) !important;
    font-size: 14px;
    font-weight: 800;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.25s ease, border-color var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition) !important;
    transform: none !important;
    white-space: normal !important;
    appearance: none;
    -webkit-tap-highlight-color: transparent;
}

.ai-study-menu-card:hover,
.ai-study-feature-card:hover {
    transform: translateY(-2px);
    border-color: var(--card-hover-border) !important;
    box-shadow: var(--menu-hover-shadow) !important;
    color: var(--primary) !important;
    background: var(--card-hover-bg) !important;
}

.ai-study-menu-card.is-active,
.ai-study-menu-card.active,
.ai-study-feature-card.active {
    background: var(--card-active-bg) !important;
    border-color: var(--card-active-border) !important;
    color: var(--primary) !important;
}

.ai-study-menu-card .icon,
.ai-study-feature-card .icon {
    flex: 0 0 auto;
    font-size: 20px;
    line-height: 1;
}

.ai-study-menu-card .title,
.ai-study-feature-card .title {
    flex: 1 1 auto;
    min-width: 0;
    white-space: normal;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.15;
    font-size: 14px;
    word-break: break-word;
}

.ai-study-menu-card[data-ai-study-tab="camera-scan"] .title { color: var(--icon-camera-scan); }
.ai-study-menu-card[data-ai-study-tab="maths-tutor"] .title,
.ai-study-menu-card[data-ai-study-tab="maths-master"] .title { color: var(--icon-math); }
.ai-study-menu-card[data-ai-study-tab="english-master"] .title,
.ai-study-menu-card[data-ai-study-tab="english-grammar"] .title { color: var(--icon-english); }
.ai-study-menu-card[data-ai-study-tab="quiz-test"] .title { color: var(--icon-quiz); }
.ai-study-menu-card[data-ai-study-tab="voice-doubt-solver"] .title { color: var(--icon-voice-tutor); }
.ai-study-menu-card[data-ai-study-tab="study-planner"] .title,
.ai-study-menu-card[data-ai-study-tab="timetable-homework"] .title { color: var(--icon-study-planner); }
.ai-study-menu-card[data-ai-study-tab="notebook-scanner"] .title,
.ai-study-menu-card[data-ai-study-tab="notebook-intelligence"] .title { color: var(--icon-notebook); }
.ai-study-menu-card[data-ai-study-tab="progress"] .title { color: var(--icon-weakness); }

.ai-study-menu-card.is-active .title,
.ai-study-menu-card.active .title {
    color: var(--primary) !important;
}

.ai-study-tab::before {
    display: none !important;
}

/* ===== TYPOGRAPHY ===== */
.ai-study-hero h2,
.ai-study-scan-hero h2,
.ai-study-section__header h2,
.ai-study-section__header h3,
.ai-study-buddy-card h3,
.ai-study-master-card h3,
.ai-study-stat-card strong {
    color: var(--heading) !important;
}

.ai-study-hero p,
.ai-study-scan-hero p,
.ai-study-muted,
.ai-study-stat-card__label,
.ai-study-stat-card small,
.ai-study-master-card p,
.ai-study-mobile-quick-card__content small {
    color: var(--text-secondary) !important;
}

.ai-study-kicker {
    color: var(--primary) !important;
}

/* ===== HERO / BANNERS ===== */
.ai-study-hero,
.ai-study-scan-hero {
    background: var(--hero-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow) !important;
    color: var(--text-primary) !important;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.ai-study-hero::after,
.ai-study-scan-hero::after {
    display: none !important;
}

.ai-study-hero-icon {
    background: var(--button-gradient) !important;
    box-shadow: var(--shadow) !important;
}

.ai-study-buddy-icon {
    background: var(--button-gradient) !important;
}

/* ===== BUTTONS ===== */
.ai-study-primary-button {
    background: var(--button-gradient) !important;
    color: var(--text-primary) !important;
    border: 0 !important;
    border-radius: 999px !important;
    box-shadow: var(--shadow) !important;
    font-weight: 700 !important;
    transition: transform var(--transition), background var(--transition), box-shadow var(--transition) !important;
}

html[data-theme="light"] .ai-study-primary-button {
    color: var(--text-on-gradient) !important;
}

.ai-study-primary-button:hover {
    background: var(--button-hover-gradient) !important;
    transform: translateY(-2px);
    box-shadow: var(--button-hover-shadow) !important;
}

.ai-study-secondary-button,
.ai-study-upload-button {
    background: var(--card-bg) !important;
    color: var(--primary) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: 999px !important;
    transition: background var(--transition), border-color var(--transition), transform var(--transition) !important;
}

.ai-study-secondary-button:hover,
.ai-study-upload-button:hover {
    background: var(--card-hover-bg) !important;
    border-color: var(--card-hover-border) !important;
    transform: translateY(-2px);
}

.ai-study-link-button {
    color: var(--primary) !important;
}

/* ===== CARDS (hover effects) ===== */
.ai-study-stat-card,
.ai-study-section,
.ai-study-buddy-card,
.ai-study-master-card,
.ai-study-english-tool-card,
.ai-study-vocab-card,
.ai-study-result-box,
.ai-study-subscription-box,
.ai-study-table-builder,
.ai-study-history-item,
.ai-study-streak-badge,
.ai-study-smart-ocr-box,
.ai-study-revision-box,
.ai-study-weakness-box,
.ai-study-empty-state,
.ai-study-auth-card,
.ai-study-mobile-quick-card {
    background: var(--card-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--radius) !important;
    box-shadow: var(--shadow) !important;
    color: var(--text-primary) !important;
    transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition) !important;
}

.ai-study-stat-card:hover,
.ai-study-section:hover,
.ai-study-master-card:hover,
.ai-study-english-tool-card:hover,
.ai-study-vocab-card:hover,
.ai-study-streak-badge:hover,
.ai-study-mobile-quick-card:hover {
    background: var(--card-hover-bg) !important;
    border-color: var(--card-hover-border) !important;
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--card-hover-shadow) !important;
}

.ai-study-buddy-message {
    background: var(--input-bg) !important;
    border: 1px solid var(--card-border) !important;
    color: var(--text-primary) !important;
}

.ai-study-master-card.is-highlighted,
.ai-study-maths-shortcut.is-highlighted,
.ai-study-english-shortcut.is-highlighted {
    border-color: var(--card-hover-border) !important;
}

/* ===== MOBILE QUICK CARDS — feature colors ===== */
.ai-study-mobile-quick-heading {
    color: var(--heading) !important;
}

.ai-study-mobile-quick-card__content strong {
    color: var(--heading) !important;
}

.ai-study-mobile-quick-card__arrow {
    color: var(--primary) !important;
    opacity: 0.75;
}

.ai-study-mobile-quick-card__icon {
    background: color-mix(in srgb, var(--feature-color, var(--primary)) 14%, transparent) !important;
    border: 1px solid color-mix(in srgb, var(--feature-color, var(--primary)) 28%, transparent) !important;
}

.ai-study-mobile-quick-card--camera-scan { --feature-color: var(--icon-camera-scan); }
.ai-study-mobile-quick-card--maths-tutor,
.ai-study-mobile-quick-card--maths-master { --feature-color: var(--icon-math); }
.ai-study-mobile-quick-card--english-master { --feature-color: var(--icon-english); }
.ai-study-mobile-quick-card--quiz-test { --feature-color: var(--icon-quiz); }
.ai-study-mobile-quick-card--notes-maker { --feature-color: var(--icon-notebook); }
.ai-study-mobile-quick-card--translation { --feature-color: var(--icon-voice-tutor); }
.ai-study-mobile-quick-card--voice-doubt-solver { --feature-color: var(--icon-voice-tutor); }
.ai-study-mobile-quick-card--study-planner { --feature-color: var(--icon-study-planner); }
.ai-study-mobile-quick-card--notebook-scanner { --feature-color: var(--icon-notebook); }
.ai-study-mobile-quick-card--progress { --feature-color: var(--icon-weakness); }

.ai-study-mobile-quick-card--english-master { --feature-color: var(--icon-english); }

.ai-study-mobile-quick-card--camera-scan .ai-study-mobile-quick-card__content strong,
.ai-study-mobile-quick-card--maths-tutor .ai-study-mobile-quick-card__content strong,
.ai-study-mobile-quick-card--maths-master .ai-study-mobile-quick-card__content strong,
.ai-study-mobile-quick-card--english-master .ai-study-mobile-quick-card__content strong,
.ai-study-mobile-quick-card--quiz-test .ai-study-mobile-quick-card__content strong,
.ai-study-mobile-quick-card--notes-maker .ai-study-mobile-quick-card__content strong,
.ai-study-mobile-quick-card--english-master .ai-study-mobile-quick-card__content strong,
.ai-study-mobile-quick-card--translation .ai-study-mobile-quick-card__content strong {
    color: var(--feature-color) !important;
}

/* Tab feature accent dots */
.ai-study-tab[data-ai-study-tab="camera-scan"] { --feature-color: var(--icon-camera-scan); }
.ai-study-tab[data-ai-study-tab="maths-tutor"],
.ai-study-tab[data-ai-study-tab="maths-master"] { --feature-color: var(--icon-math); }
.ai-study-tab[data-ai-study-tab="english-master"],
.ai-study-tab[data-ai-study-tab="english-grammar"] { --feature-color: var(--icon-english); }
.ai-study-tab[data-ai-study-tab="quiz-test"] { --feature-color: var(--icon-quiz); }
.ai-study-tab[data-ai-study-tab="study-planner"],
.ai-study-tab[data-ai-study-tab="timetable-homework"] { --feature-color: var(--icon-study-planner); }
.ai-study-tab[data-ai-study-tab="voice-doubt-solver"] { --feature-color: var(--icon-voice-tutor); }
.ai-study-tab[data-ai-study-tab="notebook-scanner"],
.ai-study-tab[data-ai-study-tab="notebook-intelligence"] { --feature-color: var(--icon-notebook); }
.ai-study-tab[data-ai-study-tab="progress"] { --feature-color: var(--icon-weakness); }
.ai-study-menu-card[data-ai-study-tab="camera-scan"] { --feature-color: var(--icon-camera-scan); }

/* ===== INPUTS / OUTPUT ===== */
.ai-study-input-window,
.ai-study-output-window,
.ai-study-tool-camera {
    background: var(--card-bg) !important;
    border-color: var(--card-border) !important;
}

.ai-study-output-window__head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}

.ai-study-output-window__head .ai-study-window-label {
    margin: 0;
}

.ai-study-pdf-download-btn {
    font-size: 13px;
    padding: 8px 14px;
    white-space: nowrap;
}

.ai-study-window-label {
    color: var(--primary) !important;
}

.ai-study-window-label--output {
    color: var(--success) !important;
}

.ai-study-field-label,
.ai-study-compact-label {
    color: var(--text-secondary) !important;
}

.ai-study-field-label input,
.ai-study-field-label select,
.ai-study-field-label textarea,
.ai-study-result-box textarea,
.ai-study-compact-label select,
.ai-study-auth-card input {
    background: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    color: var(--text-primary) !important;
    border-radius: 10px !important;
    transition: border-color var(--transition), box-shadow var(--transition) !important;
}

.ai-study-field-label input:focus,
.ai-study-field-label select:focus,
.ai-study-field-label textarea:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent) !important;
    outline: none !important;
}

.ai-study-answer-output {
    background: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    color: var(--text-primary) !important;
}

.ai-study-output-block,
.ai-study-output-block h4,
.ai-study-output-block p,
.ai-study-output-block li {
    color: var(--text-primary) !important;
}

.ai-study-chip-row span,
.ai-study-feature-list span {
    background: var(--card-hover-bg) !important;
    border: 1px solid var(--card-border) !important;
    color: var(--text-secondary) !important;
}

.ai-study-tool-camera-title {
    color: var(--primary) !important;
}

/* ===== SUCCESS / ERROR ALERTS ===== */
.ai-study-save-note,
.ai-study-alert--success,
.ai-study-success-message {
    color: var(--success) !important;
    background: var(--success-bg) !important;
    border: 1px solid var(--success-border) !important;
    border-radius: var(--radius) !important;
    padding: 12px 16px !important;
    font-weight: 700 !important;
}

.ai-study-save-note::before,
.ai-study-alert--success::before {
    content: "✔ ";
}

.ai-study-alert--danger,
.ai-study-dashboard__blocked {
    color: var(--danger) !important;
    background: var(--danger-bg) !important;
    border: 1px solid var(--danger-border) !important;
    border-radius: var(--radius) !important;
}

.ai-study-streak-badge.is-unlocked {
    border-color: var(--success-border) !important;
    background: var(--success-bg) !important;
}

.ai-study-english-shortcut,
.ai-study-maths-shortcut {
    display: block;
    width: 100%;
    min-height: 118px;
    cursor: pointer;
    text-align: left;
    appearance: none;
}

.ai-study-english-shortcut:hover,
.ai-study-english-shortcut.is-selected,
.ai-study-maths-shortcut:hover,
.ai-study-maths-shortcut.is-selected {
    border-color: var(--card-hover-border) !important;
    background: var(--card-hover-bg) !important;
    box-shadow: var(--card-hover-shadow) !important;
}

.ai-study-table-builder.is-selected,
.ai-study-english-tool-card.is-selected {
    border-color: var(--card-hover-border) !important;
    box-shadow: var(--card-hover-shadow) !important;
}

.ai-study-progress-line {
    background: color-mix(in srgb, var(--text-secondary) 22%, transparent) !important;
}

.ai-study-progress-line span {
    background: var(--button-gradient) !important;
    box-shadow: var(--glow) !important;
}

.ai-study-menu-card,
.ai-study-feature-card {
    pointer-events: auto !important;
    cursor: pointer !important;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    position: relative;
    z-index: 2;
    background-image: none !important;
    -webkit-appearance: none;
    appearance: none;
}

.ai-study-tabs .ai-study-tab {
    pointer-events: auto !important;
    cursor: pointer !important;
    touch-action: manipulation;
    background-image: none !important;
    -webkit-appearance: none;
    appearance: none;
}

.ai-study-panel[data-ai-study-panel="camera-scan"] .ai-study-primary-button,
.ai-study-panel[data-ai-study-panel="camera-scan"] .ai-study-secondary-button,
.ai-study-panel[data-ai-study-panel="camera-scan"] .ai-study-upload-button {
    pointer-events: auto !important;
    cursor: pointer !important;
    touch-action: manipulation;
    -webkit-appearance: none;
    appearance: none;
    background-image: none !important;
    position: relative;
    z-index: 2;
}

.ai-study-panel[data-ai-study-panel="camera-scan"] label.ai-study-upload-button input[type="file"] {
    pointer-events: auto !important;
}

.ai-study-panel-skeleton {
    padding: 24px 16px;
    text-align: center;
    color: var(--text-secondary);
    font-weight: 600;
}

/* ===== VOICE INPUT BUTTON (light + dark) ===== */
:root,
.ai-study-dashboard {
    --voice-btn-bg: #EEF2FF;
    --voice-btn-border: #6366F1;
    --voice-btn-text: #3730A3;
    --voice-btn-icon: #4F46E5;
    --voice-btn-listening-bg: #DC2626;
    --voice-btn-listening-border: #B91C1C;
    --voice-status-bg: color-mix(in srgb, var(--primary) 12%, var(--card-bg));
    --voice-status-text: var(--primary);
    --voice-status-error-bg: var(--danger-bg);
    --voice-status-error-text: var(--danger);
    --voice-status-success-bg: var(--success-bg);
    --voice-status-success-text: var(--success);
}

html[data-theme="dark"],
body[data-ai-study-theme="dark"],
.ai-study-dashboard[data-ai-study-theme="dark"] {
    --voice-btn-bg: #312E81;
    --voice-btn-border: #818CF8;
    --voice-btn-text: #E0E7FF;
    --voice-btn-icon: #C7D2FE;
    --voice-btn-listening-bg: #EF4444;
    --voice-btn-listening-border: #FCA5A5;
}

.ai-study-voice-field {
    position: relative;
    display: block;
    width: 100%;
}

.ai-study-voice-field textarea,
.ai-study-voice-field input[type="text"] {
    width: 100%;
    padding-right: 96px !important;
    padding-bottom: 44px !important;
}

.ai-study-voice-field--block textarea {
    padding-right: 12px !important;
    padding-bottom: 52px !important;
}

.ai-study-voice-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 40px;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1.5px solid var(--voice-btn-border);
    background: var(--voice-btn-bg);
    color: var(--voice-btn-text);
    font-size: 13px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: 0.02em;
    text-transform: capitalize;
    cursor: pointer;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 2px 8px color-mix(in srgb, var(--voice-btn-border) 22%, transparent);
    transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.ai-study-voice-btn__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--voice-btn-icon);
}

.ai-study-voice-btn__label {
    color: inherit;
}

.ai-study-voice-field .ai-study-voice-btn {
    position: absolute;
    right: 10px;
    bottom: 10px;
    z-index: 3;
}

.ai-study-voice-btn:hover,
.ai-study-voice-btn:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--voice-btn-border) 28%, transparent);
    outline: none;
}

.ai-study-voice-btn.is-listening {
    background: var(--voice-btn-listening-bg) !important;
    border-color: var(--voice-btn-listening-border) !important;
    color: #fff !important;
    animation: ai-study-voice-pulse 1s ease-in-out infinite;
}

.ai-study-voice-btn.is-listening .ai-study-voice-btn__icon {
    color: #fff !important;
}

@keyframes ai-study-voice-pulse {
    0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--voice-btn-listening-bg) 45%, transparent); }
    50% { box-shadow: 0 0 0 10px transparent; }
}

.ai-study-voice-status {
    margin: 8px 0 0;
    padding: 8px 12px;
    border-radius: 10px;
    background: var(--voice-status-bg);
    color: var(--voice-status-text);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.35;
}

.ai-study-voice-status--error {
    background: var(--voice-status-error-bg);
    color: var(--voice-status-error-text);
}

.ai-study-voice-status--success {
    background: var(--voice-status-success-bg);
    color: var(--voice-status-success-text);
}

.ai-study-camera-voice-bar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    align-items: stretch;
    margin: 12px 0 0;
}

.ai-study-camera-voice-bar .ai-study-main-camera-btn,
.ai-study-camera-voice-bar .ai-study-voice-btn--inline {
    width: 100%;
    min-height: 48px;
    position: static !important;
    right: auto !important;
    bottom: auto !important;
    justify-content: center;
    margin: 0;
}

.ai-study-camera-voice-bar .ai-study-voice-status {
    grid-column: 1 / -1;
    margin: 0;
}

.ai-study-tool-camera-extras {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 8px;
    margin-top: 10px;
    align-items: center;
}

.ai-study-tool-camera-extras .ai-study-upload-button,
.ai-study-tool-camera-extras .ai-study-extract-solve-btn {
    width: 100%;
    height: auto;
    min-height: 40px;
    max-height: 44px;
    flex: none;
    padding: 8px 10px;
    font-size: 13px;
    line-height: 1.2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    white-space: normal;
    box-sizing: border-box;
}

/* ===== USAGE METER ===== */
.ai-study-usage-meter {
    margin-top: 10px;
    padding: 10px 12px;
    border-radius: 12px;
    background: var(--card-active-bg);
    border: 1px solid var(--card-border);
}

.ai-study-student-profile .ai-study-usage-meter {
    margin-top: 12px;
    width: 100%;
}

.ai-study-user-info .ai-study-usage-meter {
    margin-top: 8px;
    grid-column: 1 / -1;
    width: 100%;
}

.ai-study-usage-meter__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 4px;
}

.ai-study-usage-meter__label {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.ai-study-usage-meter__plan {
    font-size: 11px;
    font-weight: 800;
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    padding: 2px 8px;
    border-radius: 999px;
}

.ai-study-usage-meter__text {
    display: block;
    font-size: 14px;
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.ai-study-usage-meter__track {
    height: 8px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--text-secondary) 16%, transparent);
    overflow: hidden;
    margin-bottom: 6px;
}

.ai-study-usage-meter__bar {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), #8B5CF6);
    transition: width 280ms ease;
}

.ai-study-usage-meter.is-low .ai-study-usage-meter__bar {
    background: linear-gradient(90deg, #F59E0B, #F97316);
}

.ai-study-usage-meter.is-exhausted .ai-study-usage-meter__bar {
    background: linear-gradient(90deg, #EF4444, #DC2626);
}

.ai-study-usage-meter__hint {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    line-height: 1.35;
}

.ai-study-usage-meter.is-exhausted .ai-study-usage-meter__text,
.ai-study-usage-meter.is-exhausted .ai-study-usage-meter__hint {
    color: var(--danger);
}

/* ===== AUTH ===== */
.ai-study-auth-shell {
    background: var(--bg) !important;
}

/* Theme transitions — interactive elements only (not all descendants) */
.ai-study-primary-button,
.ai-study-secondary-button,
.ai-study-menu-card,
.ai-study-tab,
.ai-study-stat-card,
.ai-study-master-card,
.ai-study-mobile-quick-card,
.ai-study-header-card,
.ai-study-shell {
    transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.ai-study-primary-button,
.ai-study-secondary-button,
.ai-study-menu-card,
.ai-study-tab,
.ai-study-stat-card,
.ai-study-master-card,
.ai-study-mobile-quick-card {
    transition-property: transform, background, background-color, border-color, color, box-shadow !important;
}

/* ===== MOBILE LAYOUT ===== */
@media (max-width: 768px) {
    .ai-study-mobile-only {
        --mobile-header-shadow: 0 12px 30px rgba(15, 23, 42, 0.10);
        --mobile-theme-shadow: 0 8px 18px rgba(37, 99, 235, 0.10);
        --mobile-card-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
        --mobile-avatar-gradient: linear-gradient(135deg, #7DD3FC, var(--primary));
        --mobile-active-border: #93C5FD;
        --mobile-logout-border: var(--danger);
        --mobile-logout-text: var(--danger);
    }

    html,
    body {
        overflow-x: hidden;
    }

    .ai-study-mobile-only {
        display: block;
    }

    .ai-study-desktop-only {
        display: none !important;
    }

    .ai-study-dashboard {
        padding: 14px !important;
        max-width: 100% !important;
        width: 100% !important;
        margin: 0 auto !important;
        background: var(--bg) !important;
    }

    .ai-study-dashboard > .student-dashboard-card,
    .ai-study-dashboard > .logout-card,
    .ai-study-extra-dashboard,
    .student-dashboard-duplicate,
    .ai-study-header-card + .ai-study-header-card {
        display: none !important;
    }

    .entry-content > .ai-study-dashboard,
    .wp-block-shortcode .ai-study-dashboard {
        margin-left: 0 !important;
        margin-right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .ai-study-header {
        display: block;
        margin-bottom: 0;
    }

    .ai-study-header-card {
        background: var(--card-bg) !important;
        border: 1px solid var(--card-border) !important;
        border-radius: 22px !important;
        padding: 14px !important;
        box-shadow: var(--mobile-header-shadow) !important;
    }

    .ai-study-header-top {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
        align-items: center;
        margin-bottom: 14px;
    }

    .ai-study-logo-text,
    .easy-padhai-title,
    .ai-study-header-title,
    .ai-study-header-card .ai-study-brand-easy,
    .ai-study-header-card .ai-study-brand-padhai {
        display: none !important;
    }

    .ai-study-theme-btn {
        width: 100%;
        min-height: 52px;
        border-radius: 18px !important;
        border: 1.5px solid var(--card-hover-border) !important;
        background: var(--card-bg) !important;
        color: var(--primary) !important;
        font-size: 16px;
        font-weight: 800;
        box-shadow: var(--mobile-theme-shadow) !important;
    }

    .ai-study-dashboard-title {
        margin: 0;
        text-align: center;
        color: var(--text-primary) !important;
        font-size: 20px;
        font-weight: 900;
        line-height: 1.2;
    }

    .ai-study-user-row {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 12px;
        background: var(--card-active-bg);
        border-radius: 18px;
        padding: 12px;
    }

    .ai-study-user-info {
        flex: 1 1 calc(100% - 130px);
        min-width: 0;
    }

    .ai-study-usage-meter {
        flex: 1 1 100%;
    }

    .ai-study-user-avatar {
        width: 58px;
        height: 58px;
        border-radius: 50%;
        background: var(--mobile-avatar-gradient);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-on-gradient);
        font-size: 28px;
        font-weight: 900;
        flex: 0 0 auto;
        overflow: hidden;
    }

    .ai-study-user-avatar--photo {
        padding: 0;
        background: var(--card-border);
    }

    .ai-study-user-avatar-img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 50%;
        display: block;
    }

    .ai-study-user-info {
        flex: 1;
        min-width: 0;
    }

    .ai-study-user-name {
        margin: 0 !important;
        color: var(--text-primary) !important;
        font-size: 18px;
        font-weight: 900;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .ai-study-user-role {
        display: block;
        color: var(--text-secondary);
        font-size: 14px;
        font-weight: 700;
        margin-top: 2px;
    }

    .ai-study-logout-form {
        margin: 0;
        flex: 0 0 auto;
    }

    .ai-study-logout-btn,
    .ai-study-mobile-only .ai-study-logout-button {
        width: auto;
        min-width: 104px;
        min-height: 48px;
        border-radius: 16px !important;
        border: 1.5px solid var(--mobile-logout-border) !important;
        background: var(--card-bg) !important;
        color: var(--mobile-logout-text) !important;
        font-size: 15px;
        font-weight: 900;
        box-shadow: none !important;
        padding: 0 12px;
    }

    .ai-study-menu,
    .ai-study-feature-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
        margin-top: 16px;
        margin-bottom: 16px;
        max-height: none;
        overflow: visible;
    }

    .ai-study-menu-card,
    .ai-study-feature-card,
    .ai-study-menu .ai-study-tab {
        min-width: 0;
        min-height: 74px;
        border-radius: 16px !important;
        padding: 12px !important;
        background: var(--card-bg) !important;
        border: 1px solid var(--card-border) !important;
        box-shadow: var(--mobile-card-shadow) !important;
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 15px;
        font-weight: 900;
        line-height: 1.15;
    }

    .ai-study-menu-card .icon,
    .ai-study-feature-card .icon {
        font-size: 22px;
    }

    .ai-study-menu-card .title,
    .ai-study-feature-card .title {
        font-size: 15px;
        line-height: 1.15;
    }

    .ai-study-menu-card.is-active,
    .ai-study-menu-card.active,
    .ai-study-feature-card.active {
        background: var(--card-active-bg) !important;
        border-color: var(--mobile-active-border) !important;
        color: var(--primary) !important;
    }

    .ai-study-menu-card.is-active .title,
    .ai-study-menu-card.active .title {
        color: var(--primary) !important;
    }

    .ai-study-shell {
        display: block !important;
        grid-template-columns: 1fr !important;
        min-height: auto !important;
        border: 0 !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        background: transparent !important;
        overflow: visible !important;
    }

    .ai-study-main {
        padding: 0 !important;
        background: transparent !important;
    }

    .ai-study-panel {
        padding: 4px 0 20px;
    }

    .ai-study-panel h2,
    .ai-study-panel h3 {
        font-size: 18px;
        line-height: 1.25;
    }

    .ai-study-primary-button,
    .ai-study-secondary-button,
    .ai-study-upload-button,
    .ai-study-voice-btn {
        min-height: 48px;
        font-size: 15px;
        border-radius: 14px !important;
    }

    .ai-study-voice-btn {
        min-height: 44px;
        padding: 10px 16px;
        font-size: 14px;
    }

    .ai-study-voice-field textarea,
    .ai-study-voice-field input[type="text"] {
        min-height: 120px;
        font-size: 16px;
        padding-right: 104px !important;
        padding-bottom: 52px !important;
    }

    .ai-study-tool-actions {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .ai-study-tool-actions select,
    .ai-study-tool-actions .ai-study-primary-button,
    .ai-study-tool-actions .ai-study-secondary-button {
        width: 100%;
        flex: 1 1 auto;
        min-width: 0;
        max-width: 100%;
    }

    .ai-study-camera-voice-bar {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .ai-study-camera-voice-bar .ai-study-main-camera-btn,
    .ai-study-camera-voice-bar .ai-study-voice-btn--inline {
        min-height: 52px;
        font-size: 15px;
    }

    .ai-study-tool-camera-extras .ai-study-upload-button,
    .ai-study-tool-camera-extras .ai-study-extract-solve-btn {
        min-height: 40px !important;
        max-height: 44px !important;
        padding: 7px 6px !important;
        font-size: 12px !important;
    }

    .ai-study-camera-toolbar,
    .ai-study-tool-camera-toolbar {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .ai-study-camera-toolbar .ai-study-compact-label--inline,
    .ai-study-tool-camera-toolbar .ai-study-upload-button {
        grid-column: 1 / -1;
    }

    .ai-study-camera-toolbar .ai-study-primary-button,
    .ai-study-camera-toolbar .ai-study-secondary-button,
    .ai-study-camera-toolbar .ai-study-upload-button,
    .ai-study-tool-camera-toolbar .ai-study-primary-button,
    .ai-study-tool-camera-toolbar .ai-study-secondary-button,
    .ai-study-tool-camera-toolbar .ai-study-upload-button {
        flex: 1 1 auto;
        min-width: 0;
        width: 100%;
    }

    .ai-study-scan-hero,
    .ai-study-revision-box,
    .ai-study-smart-ocr-box,
    .ai-study-premium-box {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .ai-study-revision-box {
        grid-template-columns: 1fr !important;
    }

    .ai-study-scan-hero .ai-study-primary-button,
    .ai-study-revision-box .ai-study-primary-button,
    .ai-study-premium-actions .ai-study-primary-button,
    .ai-study-premium-actions .ai-study-secondary-button {
        width: 100%;
    }

    .ai-study-premium-actions {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .ai-study-english-tool-grid {
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .ai-study-english-tool-card {
        padding: 14px;
        border-radius: 16px;
    }

    .ai-study-result-box textarea,
    .ai-study-field-label textarea,
    .ai-study-compact-label select,
    .ai-study-field-label select {
        font-size: 16px;
        min-height: 44px;
    }

    .ai-study-mobile-quick-card {
        min-height: 80px;
        border-radius: 18px !important;
    }

    .ai-study-output-window,
    .ai-study-input-window {
        border-radius: 16px !important;
        padding: 12px !important;
    }
}

@media (min-width: 769px) {
    .ai-study-mobile-only {
        display: none !important;
    }

    .ai-study-desktop-only {
        display: block;
    }
}

@media (max-width: 380px) {
    .ai-study-menu-card,
    .ai-study-feature-card,
    .ai-study-menu .ai-study-tab {
        font-size: 13px;
        padding: 10px;
    }

    .ai-study-menu-card .icon,
    .ai-study-feature-card .icon {
        font-size: 18px;
    }

    .ai-study-menu-card .title,
    .ai-study-feature-card .title {
        font-size: 13px;
    }
}

/* ===== DARK THEME — Recent Answers & readable text contrast ===== */
html[data-theme="dark"] .ai-study-section:has(.ai-study-history-list),
html[data-theme="dark"] .ai-study-panel[data-ai-study-panel="history"] .ai-study-section,
body[data-ai-study-theme="dark"] .ai-study-section:has(.ai-study-history-list),
body[data-ai-study-theme="dark"] .ai-study-panel[data-ai-study-panel="history"] .ai-study-section,
body.dark-mode .ai-study-section:has(.ai-study-history-list),
body.dark-mode .ai-study-panel[data-ai-study-panel="history"] .ai-study-section,
.dark-mode .ai-study-section:has(.ai-study-history-list),
.dark-mode .ai-study-panel[data-ai-study-panel="history"] .ai-study-section,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-section:has(.ai-study-history-list),
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-panel[data-ai-study-panel="history"] .ai-study-section {
    background: var(--section-bg) !important;
    border: 1px solid var(--history-section-border) !important;
    border-radius: 14px !important;
}

html[data-theme="dark"] .ai-study-section:has(.ai-study-history-list) .ai-study-section__header h2,
html[data-theme="dark"] .ai-study-section:has(.ai-study-history-list) .ai-study-section__header h3,
html[data-theme="dark"] .ai-study-panel[data-ai-study-panel="history"] .ai-study-section__header h2,
html[data-theme="dark"] .ai-study-panel[data-ai-study-panel="history"] .ai-study-section__header h3,
body[data-ai-study-theme="dark"] .ai-study-section:has(.ai-study-history-list) .ai-study-section__header h2,
body[data-ai-study-theme="dark"] .ai-study-section:has(.ai-study-history-list) .ai-study-section__header h3,
body.dark-mode .recent-answers-title,
.dark-mode .recent-answers-title,
body.dark-mode .recent-answers h2,
.dark-mode .recent-answers h2,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-section:has(.ai-study-history-list) .ai-study-section__header h3 {
    color: var(--text-primary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-history-item,
body[data-ai-study-theme="dark"] .ai-study-history-item,
body.dark-mode .recent-answer-card,
.dark-mode .recent-answer-card,
body.dark-mode .answer-card,
.dark-mode .answer-card,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-history-item {
    background: var(--card-bg) !important;
    border: 1px solid var(--history-card-border) !important;
    border-radius: 14px !important;
    color: var(--heading) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-history-item:hover,
body[data-ai-study-theme="dark"] .ai-study-history-item:hover,
body.dark-mode .recent-answer-card:hover,
.dark-mode .recent-answer-card:hover,
body.dark-mode .answer-card:hover,
.dark-mode .answer-card:hover,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-history-item:hover {
    border-color: var(--history-section-border) !important;
    box-shadow: var(--history-hover-shadow) !important;
    background: var(--card-hover-bg) !important;
}

html[data-theme="dark"] .ai-study-history-item span,
body[data-ai-study-theme="dark"] .ai-study-history-item span,
body.dark-mode .recent-answer-card .category,
.dark-mode .recent-answer-card .category,
body.dark-mode .answer-category,
.dark-mode .answer-category,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-history-item span {
    color: var(--primary) !important;
    opacity: 1 !important;
    font-weight: 800;
}

html[data-theme="dark"] .ai-study-history-item h4,
body[data-ai-study-theme="dark"] .ai-study-history-item h4,
body.dark-mode .recent-answer-card h3,
.dark-mode .recent-answer-card h3,
body.dark-mode .answer-card h3,
.dark-mode .answer-card h3,
body.dark-mode .answer-title,
.dark-mode .answer-title,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-history-item h4 {
    color: var(--history-title) !important;
    opacity: 1 !important;
    font-weight: 800;
}

html[data-theme="dark"] .ai-study-history-item p,
body[data-ai-study-theme="dark"] .ai-study-history-item p,
body.dark-mode .recent-answer-card p,
.dark-mode .recent-answer-card p,
body.dark-mode .answer-card p,
.dark-mode .answer-card p,
body.dark-mode .answer-excerpt,
.dark-mode .answer-excerpt,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-history-item p {
    color: var(--history-excerpt) !important;
    opacity: 1 !important;
    font-weight: 500;
    line-height: 1.6;
}

html[data-theme="dark"] .ai-study-section:has(.ai-study-history-list) .ai-study-link-button,
html[data-theme="dark"] .ai-study-panel[data-ai-study-panel="history"] .ai-study-link-button,
body[data-ai-study-theme="dark"] .ai-study-section:has(.ai-study-history-list) .ai-study-link-button,
body.dark-mode .recent-answers .view-history,
.dark-mode .recent-answers .view-history,
body.dark-mode .view-history-btn,
.dark-mode .view-history-btn,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-section:has(.ai-study-history-list) .ai-study-link-button {
    background: var(--history-link-bg) !important;
    color: var(--history-link-text) !important;
    border: 1px solid var(--history-link-border) !important;
    border-radius: 999px !important;
    padding: 8px 16px !important;
    font-weight: 800 !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-empty-state,
body[data-ai-study-theme="dark"] .ai-study-empty-state,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-empty-state {
    color: var(--text-secondary) !important;
    opacity: 1 !important;
}

/* Same low-contrast fixes across dashboard dark surfaces */
html[data-theme="dark"] .ai-study-dashboard .ai-study-muted,
html[data-theme="dark"] .ai-study-dashboard .ai-study-stat-card span:not(.ai-study-stat-card__icon),
html[data-theme="dark"] .ai-study-dashboard .ai-study-stat-card small,
html[data-theme="dark"] .ai-study-dashboard .ai-study-stat-card__label,
html[data-theme="dark"] .ai-study-dashboard .ai-study-streak-badge span,
html[data-theme="dark"] .ai-study-dashboard .ai-study-subscription-box span,
html[data-theme="dark"] .ai-study-dashboard .ai-study-compact-label,
html[data-theme="dark"] .ai-study-dashboard .ai-study-field-label,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-muted,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-muted {
    color: var(--text-secondary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-section,
html[data-theme="dark"] .ai-study-dashboard .ai-study-stat-card,
html[data-theme="dark"] .ai-study-dashboard .ai-study-result-box,
html[data-theme="dark"] .ai-study-dashboard .ai-study-subscription-box,
html[data-theme="dark"] .ai-study-dashboard .ai-study-table-builder,
html[data-theme="dark"] .ai-study-dashboard .ai-study-master-card,
html[data-theme="dark"] .ai-study-dashboard .ai-study-english-tool-card,
html[data-theme="dark"] .ai-study-dashboard .ai-study-vocab-card,
html[data-theme="dark"] .ai-study-dashboard .ai-study-question-card,
html[data-theme="dark"] .ai-study-dashboard .ai-study-advanced-card,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-section,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-section {
    background: var(--card-bg) !important;
    border-color: var(--card-border) !important;
    color: var(--text-primary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-section__header h2,
html[data-theme="dark"] .ai-study-dashboard .ai-study-section__header h3,
html[data-theme="dark"] .ai-study-dashboard .ai-study-history-item h4,
html[data-theme="dark"] .ai-study-dashboard .ai-study-output-block h4,
html[data-theme="dark"] .ai-study-dashboard .ai-study-stat-card strong,
html[data-theme="dark"] .ai-study-dashboard .ai-study-streak-badge strong,
html[data-theme="dark"] .ai-study-dashboard .ai-study-master-card h3,
html[data-theme="dark"] .ai-study-dashboard .ai-study-question-card h4,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-section__header h2,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-section__header h3,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-section__header h2,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-section__header h3 {
    color: var(--heading) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-output-block p,
html[data-theme="dark"] .ai-study-dashboard .ai-study-output-block li,
html[data-theme="dark"] .ai-study-dashboard .ai-study-result-box p,
html[data-theme="dark"] .ai-study-dashboard .ai-study-tool-panel p,
html[data-theme="dark"] .ai-study-dashboard .ai-study-buddy-card p,
html[data-theme="dark"] .ai-study-dashboard .ai-study-master-card p,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-output-block p,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-output-block p {
    color: var(--history-excerpt) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-history-row,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-history-row,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-history-row {
    border-bottom-color: var(--card-border) !important;
    color: var(--text-primary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-link-button,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-link-button,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-link-button {
    opacity: 1 !important;
}

/* ===== DARK THEME — Maths Master table grid (Tables 2–100) ===== */
html[data-theme="dark"] .ai-study-dashboard .ai-study-table-lines div,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-table-lines div,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-table-lines div {
    background: var(--card-hover-bg) !important;
    border: 1px solid var(--card-border) !important;
    color: var(--text-primary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-table-lines div span,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-table-lines div span,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-table-lines div span {
    color: var(--text-secondary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-table-lines div strong,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-table-lines div strong,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-table-lines div strong {
    color: var(--primary) !important;
    opacity: 1 !important;
    font-weight: 800;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-table-result h4,
html[data-theme="dark"] .ai-study-dashboard .ai-study-table-output .ai-study-table-result h4,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-table-result h4,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-table-result h4 {
    color: var(--text-primary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-table-result p,
html[data-theme="dark"] .ai-study-dashboard .ai-study-table-output .ai-study-table-result p,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-table-result p,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-table-result p {
    color: var(--text-secondary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-answer-box,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-answer-box,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-answer-box {
    background: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    color: var(--text-primary) !important;
    opacity: 1 !important;
}

html[data-theme="dark"] .ai-study-dashboard .ai-study-table-output,
body[data-ai-study-theme="dark"] .ai-study-dashboard .ai-study-table-output,
.ai-study-dashboard[data-ai-study-theme="dark"] .ai-study-table-output {
    color: var(--text-primary) !important;
    opacity: 1 !important;
}

/* Compact Choose File + Extract & Solve row (student scan tools) */
.ai-study-tool-camera-extras {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) !important;
    gap: 8px !important;
    align-items: center !important;
}

.ai-study-tool-camera-extras .ai-study-upload-button,
.ai-study-tool-camera-extras .ai-study-extract-solve-btn,
.ai-study-tool-camera-extras [data-ai-study-tool-camera-solve] {
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    min-height: 40px !important;
    max-height: 44px !important;
    flex: none !important;
    padding: 8px 10px !important;
    font-size: 13px !important;
    line-height: 1.2 !important;
    border-radius: 10px !important;
    box-sizing: border-box !important;
}