@charset "UTF-8";
/**
 * ============================================================================
 * BnB EDUCATION OS - MASTER STYLESHEET
 * Theme: Dark Mode Native & Light Mode Support
 * ============================================================================
 */

/* ==========================================================================
   1. CSS VARIABLES & DESIGN TOKENS
   ========================================================================== */
:root {
    --bg-main: #141414; --bg-widget: #1e1e1e; --bg-widget-hover: #252525; --bg-input: #2a2a2a; --bg-overlay: rgba(0, 0, 0, 0.75);
    --text-main: #ffffff; --text-secondary: #d1d5db; --text-muted: #9ca3af; --text-inverse: #000000;
    --accent-primary: #3b82f6; --accent-hover: #2563eb; --accent-active: #1d4ed8; --accent-glow: rgba(59, 130, 246, 0.2);
    --status-success: #10b981; --status-warning: #f59e0b; --status-danger: #ef4444; --status-info: #3b82f6;
    --border-light: #2a2a2a; --border-main: #333333; --border-focus: #4b5563;
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-xs: 0.75rem; --font-size-sm: 0.875rem; --font-size-md: 1rem; --font-size-lg: 1.125rem; --font-size-xl: 1.25rem; --font-size-2xl: 1.5rem;
    --spacing-xs: 4px; --spacing-sm: 8px; --spacing-md: 16px; --spacing-lg: 24px; --spacing-xl: 32px;
    --radius-sm: 6px; --radius-md: 10px; --radius-lg: 16px; --radius-xl: 24px; --radius-pill: 9999px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3); --shadow-md: 0 4px 6px rgba(0,0,0,0.4); --shadow-lg: 0 10px 25px rgba(0,0,0,0.5); --shadow-modal: 0 -10px 40px rgba(0,0,0,0.6);
    --transition-fast: 0.15s ease; --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1); --transition-slow: 0.5s ease;
    --z-index-base: 1; --z-index-nav: 100; --z-index-dropdown: 200; --z-index-overlay: 1000; --z-index-modal: 1010; --z-index-toast: 2000;
}

/* ==========================================
   LIGHT THEME OVERRIDES (COMPREHENSIVE)
========================================== */
[data-theme="light"] {
    --bg-main: #f3f4f6; --bg-widget: #ffffff; --bg-widget-hover: #f9fafb; --bg-input: #ffffff; --bg-overlay: rgba(0, 0, 0, 0.5);
    --text-main: #111827; --text-secondary: #4b5563; --text-muted: #6b7280; --text-inverse: #ffffff;
    --border-light: #f3f4f6; --border-main: #e5e7eb; --border-focus: #d1d5db;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05); --shadow-md: 0 4px 6px rgba(0,0,0,0.05); --shadow-lg: 0 10px 25px rgba(0,0,0,0.1); --shadow-modal: 0 -10px 40px rgba(0,0,0,0.15);
}

/* ==========================================================================
   2. GLOBAL RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { font-size: 16px; scroll-behavior: smooth; }
body { background-color: var(--bg-main); color: var(--text-main); font-family: var(--font-family-base); line-height: 1.5; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; overflow-x: hidden; min-height: 100vh; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-focus); border-radius: var(--radius-pill); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
h1, h2, h3, h4, h5, h6 { color: var(--text-main); font-weight: 600; line-height: 1.2; }
p { color: var(--text-main); }
a { color: var(--accent-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-hover); }
svg.lucide { width: 20px; height: 20px; stroke-width: 2; stroke: currentColor; fill: none; stroke-linecap: round; stroke-linejoin: round; }

/* ==========================================================================
   3. UTILITY CLASSES
   ========================================================================== */
.hidden { display: none !important; }
.text-muted { color: var(--text-muted) !important; }
.subtitle { color: var(--text-secondary); font-size: var(--font-size-sm); }
.full-width { width: 100% !important; }
.mt-large { margin-top: var(--spacing-lg) !important; }
.text-center { text-align: center !important; }

/* ==========================================================================
   4. VIEW STATES (SPA Navigation)
   ========================================================================== */
.view-state { display: none; min-height: 100vh; padding-bottom: 80px; opacity: 0; }
.view-state.active { display: block; animation: fadeViewIn var(--transition-normal) forwards; }
@keyframes fadeViewIn { 0% { opacity: 0; transform: translateY(10px); } 100% { opacity: 1; transform: translateY(0); } }

/* ==========================================================================
   5. BUTTONS & INTERACTIVE ELEMENTS
   ========================================================================== */
button { font-family: var(--font-family-base); cursor: pointer; border: none; background: transparent; outline: none; transition: all var(--transition-fast); }
button:disabled { cursor: not-allowed; opacity: 0.5; }
.primary-btn { background-color: var(--accent-primary); color: #fff; font-size: var(--font-size-md); font-weight: 600; padding: 12px var(--spacing-lg); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; gap: var(--spacing-sm); box-shadow: 0 2px 4px var(--accent-glow); }
.primary-btn:hover { background-color: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3); }
.primary-btn:active { background-color: var(--accent-active); transform: translateY(0); }
.add-btn { background-color: var(--bg-input); color: var(--text-main); border: 1px solid var(--border-main); padding: 8px var(--spacing-md); border-radius: var(--radius-md); font-size: var(--font-size-sm); font-weight: 500; display: flex; align-items: center; gap: 6px; }
.add-btn:hover { background-color: var(--border-light); border-color: var(--border-focus); }
.icon-btn { color: var(--text-muted); padding: 8px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; }
.icon-btn:hover { background-color: var(--bg-input); color: var(--text-main); }
.filter-btn { background-color: var(--bg-main); color: var(--text-muted); border: 1px solid var(--border-main); padding: 6px 14px; border-radius: var(--radius-pill); font-size: var(--font-size-sm); font-weight: 500; white-space: nowrap; }
.filter-btn:hover { color: var(--text-main); border-color: var(--border-focus); }
.filter-btn.active { background-color: var(--text-main); color: var(--bg-main); border-color: var(--text-main); }
.theme-toggle { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background-color: var(--bg-widget); border: 1px solid var(--border-main); color: var(--text-main); margin-right: 10px; }
.theme-toggle:hover { background-color: var(--accent-glow); color: var(--accent-primary); border-color: var(--accent-primary); transform: rotate(15deg); }

/* ==========================================================================
   6. FORMS & INPUTS
   ========================================================================== */
.input-group { display: flex; flex-direction: column; gap: var(--spacing-xs); margin-bottom: var(--spacing-md); }
.input-group label { font-size: var(--font-size-sm); color: var(--text-secondary); font-weight: 500; }
input[type="text"], input[type="password"], input[type="date"], select { width: 100%; background-color: var(--bg-input); border: 1px solid var(--border-main); color: var(--text-main); font-family: var(--font-family-base); font-size: var(--font-size-md); padding: 12px var(--spacing-md); border-radius: var(--radius-md); outline: none; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); }
input[type="text"]:focus, input[type="password"]:focus, input[type="date"]:focus, select:focus { border-color: var(--accent-primary); box-shadow: 0 0 0 2px var(--accent-glow); }
input::placeholder { color: var(--text-muted); }
.input-row { display: flex; align-items: center; background-color: var(--bg-input); border: 1px solid var(--border-main); border-radius: var(--radius-md); padding: 0 var(--spacing-md); transition: border-color var(--transition-fast); }
.input-row:focus-within { border-color: var(--accent-primary); }
.input-row .input-icon { color: var(--text-muted); width: 18px; height: 18px; }
.input-row input { border: none; background: transparent; box-shadow: none; padding: 12px var(--spacing-sm); }
.minimal-select { appearance: none; background-color: var(--bg-widget); background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%239ca3af" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"></polyline></svg>'); background-repeat: no-repeat; background-position: right 12px center; background-size: 16px; padding-right: 36px; border: 1px solid var(--border-main); border-radius: var(--radius-md); color: var(--text-secondary); font-size: var(--font-size-sm); cursor: pointer; }
.minimal-select:hover { border-color: var(--border-focus); color: var(--text-main); }
.checkbox-row { display: flex; align-items: center; gap: var(--spacing-sm); padding: var(--spacing-sm) 0; cursor: pointer; }
.custom-checkbox { appearance: none; width: 22px; height: 22px; background-color: var(--bg-input); border: 2px solid var(--border-main); border-radius: var(--radius-sm); cursor: pointer; position: relative; transition: all var(--transition-fast); flex-shrink: 0; }
.custom-checkbox:hover { border-color: var(--border-focus); }
.custom-checkbox:checked { background-color: var(--accent-primary); border-color: var(--accent-primary); }
.custom-checkbox:checked::after { content: ''; position: absolute; left: 6px; top: 2px; width: 5px; height: 10px; border: solid white; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.checkbox-row label { font-size: var(--font-size-md); color: var(--text-secondary); cursor: pointer; user-select: none; transition: color var(--transition-fast); }
.custom-checkbox:checked + label { color: var(--text-main); }

/* ==========================================================================
   7. AUTHENTICATION / LOGIN VIEW
   ========================================================================== */
#login-view { display: flex; align-items: center; justify-content: center; padding: var(--spacing-md); }
.auth-card { background-color: var(--bg-widget); border: 1px solid var(--border-main); border-radius: var(--radius-lg); padding: var(--spacing-xl); width: 100%; max-width: 420px; box-shadow: var(--shadow-lg); text-align: center; }
.logo { font-size: var(--font-size-2xl); font-weight: 700; margin-bottom: var(--spacing-xs); letter-spacing: -0.5px; }
.logo span { color: var(--accent-primary); }
.auth-card .subtitle { margin-bottom: var(--spacing-xl); }
.user-toggle-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-md); margin-bottom: var(--spacing-xl); }
.user-choice { background-color: var(--bg-main); border: 1px solid var(--border-main); border-radius: var(--radius-md); padding: var(--spacing-lg) var(--spacing-md); cursor: pointer; transition: all var(--transition-fast); display: flex; flex-direction: column; align-items: center; gap: var(--spacing-sm); }
.user-choice:hover { background-color: var(--border-light); border-color: var(--border-focus); }
.user-choice.active { border-color: var(--accent-primary); background-color: var(--accent-glow); }
.user-choice.active span { color: var(--accent-primary); font-weight: 600; }
.avatar-placeholder { width: 50px; height: 50px; background-color: var(--bg-input); border-radius: var(--radius-pill); display: flex; align-items: center; justify-content: center; color: var(--text-muted); }
.user-choice.active .avatar-placeholder { background-color: var(--accent-primary); color: #fff; }
#password-section { animation: slideDown 0.3s ease; }
@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
#login-btn { width: 100%; margin-top: var(--spacing-sm); }

/* ==========================================================================
   8. DASHBOARD LAYOUT & NAVIGATION
   ========================================================================== */
#top-bar { display: flex; justify-content: space-between; align-items: center; padding: var(--spacing-md) var(--spacing-lg); background-color: rgba(20, 20, 20, 0.8); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-main); position: sticky; top: 0; z-index: var(--z-index-nav); }
[data-theme="light"] #top-bar { background-color: rgba(255, 255, 255, 0.8); }
.logo-small { display: flex; align-items: center; gap: var(--spacing-sm); font-weight: 700; font-size: var(--font-size-md); color: var(--text-main); }
.logo-small svg { color: var(--accent-primary); }
.user-switcher { display: flex; background-color: var(--bg-widget); border: 1px solid var(--border-main); border-radius: var(--radius-pill); padding: 4px; }
.switcher-btn { padding: 4px 16px; border-radius: var(--radius-pill); font-size: var(--font-size-sm); font-weight: 500; color: var(--text-muted); }
.switcher-btn.active { background-color: var(--text-main); color: var(--bg-main); }
#dashboard-container { padding: var(--spacing-lg); max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--spacing-xl); }

/* ==========================================================================
   9. WIDGETS & HERO SECTION
   ========================================================================== */
.widget { background-color: var(--bg-widget); border: 1px solid var(--border-main); border-radius: var(--radius-lg); padding: var(--spacing-lg); box-shadow: var(--shadow-sm); }
.widget-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--spacing-md); }
.widget-header h2 { font-size: var(--font-size-lg); font-weight: 600; }
.hero-widget { background: linear-gradient(135deg, var(--bg-widget) 0%, var(--bg-main) 100%); border-left: 4px solid var(--accent-primary); position: relative; overflow: hidden; }
#greeting-text { font-size: var(--font-size-2xl); letter-spacing: -0.5px; }
.quote-block { margin-top: var(--spacing-md); padding-top: var(--spacing-md); border-top: 1px solid var(--border-light); display: flex; align-items: flex-start; gap: var(--spacing-sm); }
.quote-icon { color: var(--accent-primary); opacity: 0.5; flex-shrink: 0; width: 24px; height: 24px; }
#css-quote-text { font-style: italic; color: var(--text-secondary); font-size: var(--font-size-md); line-height: 1.4; }

/* Word of the Day Hero Card */
.hero-word-card { background: linear-gradient(135deg, rgba(168, 85, 247, 0.08), rgba(59, 130, 246, 0.05)); border: 1px solid rgba(168, 85, 247, 0.2); border-left: 4px solid #a855f7; border-radius: var(--radius-md); padding: 16px 20px; margin-top: 24px; display: inline-block; min-width: 280px; max-width: 450px; text-align: left; box-shadow: 0 4px 15px rgba(0,0,0,0.03); }
.word-badge { display: flex; align-items: center; font-size: 0.7rem; text-transform: uppercase; font-weight: 800; color: #a855f7; letter-spacing: 1px; margin-bottom: 8px; }
.word-title { font-size: 1.6rem; font-weight: 800; color: var(--text-main); margin-bottom: 4px; letter-spacing: 0.5px; font-family: serif; }
.word-meaning { font-size: 0.95rem; color: var(--text-muted); line-height: 1.5; font-style: italic; }

/* ==========================================================================
   10. COUNTDOWNS (App Grid)
   ========================================================================== */
.app-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: var(--spacing-md); }
.app-tile { background-color: var(--bg-main); border: 1px solid var(--border-main); border-radius: var(--radius-md); padding: var(--spacing-md); display: flex; flex-direction: column; transition: transform var(--transition-fast), border-color var(--transition-fast); }
.app-tile:hover { transform: translateY(-2px); border-color: var(--border-focus); }
.countdown-tile { position: relative; }
.countdown-tile .tile-icon { color: var(--accent-primary); margin-bottom: var(--spacing-sm); }
.exam-title { font-weight: 600; font-size: var(--font-size-md); color: var(--text-main); line-height: 1.2; margin-bottom: 4px; }
.exam-date { font-size: var(--font-size-xs); color: var(--text-muted); }
.days-badge { position: absolute; top: 16px; right: 16px; font-weight: 700; color: var(--accent-primary); display: flex; align-items: baseline; }
.days-left { font-size: var(--font-size-xl); }
.days-suffix { font-size: var(--font-size-xs); margin-left: 2px; }
.countdown-tile.crunch-mode { border-color: rgba(239, 68, 68, 0.4); background-color: rgba(239, 68, 68, 0.05); }
.countdown-tile.crunch-mode .days-badge { color: var(--status-danger); }

/* ==========================================================================
   11. DAILY DOSE CHECKLIST
   ========================================================================== */
.list-container { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.text-input-row { margin-top: var(--spacing-sm); background-color: var(--bg-main); }

/* ==========================================================================
   12. CSS WAR ROOM (TABS, FILTERS & STATS)
   ========================================================================== */
.war-room-header { flex-direction: column; align-items: flex-start; gap: var(--spacing-md); }
.tab-navigation { width: 100%; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; }
.tab-navigation::-webkit-scrollbar { display: none; }
.stats-row { display: flex; justify-content: space-between; background-color: var(--bg-main); border: 1px solid var(--border-main); border-radius: var(--radius-md); padding: var(--spacing-sm) var(--spacing-md); margin-bottom: var(--spacing-md); }
.stat-item { font-size: var(--font-size-sm); color: var(--text-secondary); }
.stat-item b { color: var(--text-main); font-size: var(--font-size-md); }
.highlight-done b { color: var(--status-success); }
.dropdown-filters { margin-bottom: var(--spacing-md); overflow-x: auto; padding-bottom: 4px; }
.dropdown-filters select { flex: 1; min-width: 120px; }
.tab-content { display: none; animation: fadeViewIn 0.3s ease forwards; }
.tab-content.active { display: block; }
.scrollable-list { max-height: 500px; overflow-y: auto; padding-right: var(--spacing-xs); }

/* Expanded Essay Stats Bar */
#essay-stats-bar { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.stat-card { flex: 1; min-width: 90px; padding: 12px; background-color: var(--bg-input); border: 1px solid var(--border-main); border-radius: var(--radius-sm); display: flex; flex-direction: column; align-items: center; justify-content: center; box-shadow: var(--shadow-sm); }
.stat-label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; margin-bottom: 4px; }
.stat-value { font-size: 1.5rem; font-weight: 700; }
.stat-total .stat-label { color: var(--text-muted); } .stat-total .stat-value { color: var(--text-main); }
.stat-brainstormed .stat-label, .stat-brainstormed .stat-value { color: #a855f7; }
.stat-outline .stat-label, .stat-outline .stat-value { color: #f97316; }
.stat-intro .stat-label, .stat-intro .stat-value { color: #3b82f6; }
.stat-full .stat-label, .stat-full .stat-value { color: var(--status-success); }
.stat-left .stat-label, .stat-left .stat-value { color: var(--status-danger); }

/* ==========================================================================
   13. ESSAY DATABASE (LIST ITEMS)
   ========================================================================== */
.essay-item { background-color: var(--bg-main); border: 1px solid var(--border-main); border-radius: var(--radius-md); padding: var(--spacing-md); margin-bottom: var(--spacing-sm); transition: border-color var(--transition-fast); }
.essay-item:hover { border-color: var(--border-focus); }
.essay-meta { display: flex; gap: var(--spacing-sm); margin-bottom: var(--spacing-sm); }
.tag { background-color: var(--bg-widget); color: var(--text-muted); font-size: var(--font-size-xs); padding: 2px 8px; border-radius: var(--radius-sm); border: 1px solid var(--border-main); }
.essay-statement { font-size: var(--font-size-md); line-height: 1.5; margin-bottom: var(--spacing-md); color: var(--text-main); }
.essay-actions { display: flex; justify-content: space-between; border-top: 1px dashed var(--border-main); padding-top: var(--spacing-sm); }
.status-btn { font-size: var(--font-size-lg); filter: grayscale(100%); opacity: 0.3; padding: 6px; border-radius: var(--radius-sm); transition: all var(--transition-fast); }
.status-btn:hover { opacity: 0.7; background-color: var(--bg-widget); }
.status-btn.active { filter: grayscale(0%); opacity: 1; background-color: var(--bg-widget); transform: scale(1.1); }

/* ==========================================================================
   14. SYLLABUS TRACKING (ACCORDIONS)
   ========================================================================== */
.subject-accordion { background-color: var(--bg-main); border: 1px solid var(--border-main); border-radius: var(--radius-md); margin-bottom: var(--spacing-sm); overflow: hidden; transition: border-color var(--transition-fast); }
.subject-accordion:hover { border-color: var(--border-focus); }
.accordion-header { display: flex; justify-content: space-between; align-items: center; padding: var(--spacing-md); background-color: var(--bg-widget); cursor: pointer; user-select: none; }
.accordion-title-group { display: flex; align-items: center; gap: var(--spacing-sm); }
.subject-icon { color: var(--accent-primary); width: 18px; height: 18px; }
.subject-name { font-weight: 600; font-size: var(--font-size-md); }
.accordion-action-group { display: flex; align-items: center; gap: var(--spacing-xs); }
.accordion-chevron { color: var(--text-muted); transition: transform var(--transition-normal); }
.subject-accordion.open .accordion-chevron { transform: rotate(180deg); }
.subject-accordion.open .accordion-body { display: block; }
.accordion-body { padding: var(--spacing-md); border-top: 1px solid var(--border-main); background-color: var(--bg-main); }
.priority-group { margin-bottom: var(--spacing-md); }
.priority-title { font-size: var(--font-size-xs); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: var(--spacing-sm); font-weight: 700; }
.title-red { color: var(--status-danger); } .title-yellow { color: var(--status-warning); } .title-blue { color: var(--status-info); }

/* Topics & Progress Bar inside Syllabus */
.topic-row { background-color: var(--bg-widget); border-radius: var(--radius-sm); padding: var(--spacing-sm) var(--spacing-md); margin-bottom: var(--spacing-xs); display: flex; flex-direction: column; gap: var(--spacing-xs); border: 1px solid transparent; }
.topic-row:hover { border-color: var(--border-main); }
.topic-header-row { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.topic-name { font-size: var(--font-size-sm); color: var(--text-main); }
.revision-select { font-size: var(--font-size-xs); padding: 4px 8px; background-color: var(--bg-main); border-color: var(--border-main); }
.block-add-topic-btn { width: 100%; justify-content: center; background: transparent; border: 1px dashed var(--border-focus); color: var(--text-muted); margin-top: var(--spacing-sm); }
.block-add-topic-btn:hover { color: var(--text-main); border-style: solid; }
.progress-track { width: 100%; height: 6px; background-color: var(--bg-main); border-radius: var(--radius-pill); overflow: hidden; border: 1px solid var(--border-main); margin-top: 10px; }
.progress-fill { height: 100%; width: 0%; background-color: transparent; border-radius: var(--radius-pill); transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.4s ease; }
.subject-progress-pill { position: relative; display: flex; align-items: center; justify-content: center; width: 48px; height: 22px; background-color: rgba(0, 0, 0, 0.2); border: 1px solid var(--border-main); border-radius: var(--radius-pill); overflow: hidden; margin-left: 10px; }
.pill-fill { position: absolute; left: 0; top: 0; height: 100%; width: 0%; background-color: var(--status-danger); opacity: 0.5; transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.4s ease; z-index: 1; }
.pill-text { position: relative; z-index: 2; font-size: 0.7rem; font-weight: 700; color: var(--text-main); }

/* ==========================================================================
   15. OTHER EXAMS (CHECKLISTS)
   ========================================================================== */
.exam-checklist-item { display: flex; justify-content: space-between; align-items: center; background-color: var(--bg-main); border: 1px solid var(--border-main); border-radius: var(--radius-md); padding: var(--spacing-md); margin-bottom: var(--spacing-xs); }
.exam-checklist-info { display: flex; flex-direction: column; }
.other-exam-name { font-weight: 600; font-size: var(--font-size-md); }
.check-exam-btn:hover, .check-exam-btn.completed { color: var(--status-success); }

/* ==========================================================================
   16. MODALS & BOTTOM SHEETS
   ========================================================================== */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: var(--bg-overlay); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); z-index: var(--z-index-overlay); display: flex; flex-direction: column; justify-content: flex-end; opacity: 0; visibility: hidden; transition: opacity var(--transition-normal), visibility var(--transition-normal); }
.modal-overlay.open { opacity: 1; visibility: visible; }
.bottom-sheet { background-color: var(--bg-widget); border-top: 1px solid var(--border-main); border-radius: var(--radius-xl) var(--radius-xl) 0 0; padding: var(--spacing-xl); width: 100%; max-width: 600px; margin: 0 auto; transform: translateY(100%); transition: transform var(--transition-normal); box-shadow: var(--shadow-modal); max-height: 90vh; overflow-y: auto; }
.modal-overlay.open .bottom-sheet { transform: translateY(0); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--spacing-lg); }
.modal-header h3 { font-size: var(--font-size-xl); }
.close-modal-btn { background-color: var(--bg-input); color: var(--text-main); border-radius: var(--radius-pill); }
.close-modal-btn:hover { background-color: var(--border-focus); }

/* ==========================================================================
   17. TOAST NOTIFICATIONS
   ========================================================================== */
.toast { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(50px); background-color: var(--text-main); color: var(--bg-main); padding: 12px var(--spacing-lg); border-radius: var(--radius-pill); display: flex; align-items: center; gap: var(--spacing-sm); z-index: var(--z-index-toast); font-weight: 600; font-size: var(--font-size-sm); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transition: all var(--transition-normal); }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; visibility: visible; }
.toast.error { background-color: var(--status-danger); color: white; }
.toast.success { background-color: var(--status-success); color: white; }
.spin { animation: spinIcon 1s linear infinite; }
@keyframes spinIcon { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ==========================================================================
   18. RESPONSIVE DESIGN (Media Queries)
   ========================================================================== */
@media screen and (max-width: 768px) {
    :root { --spacing-xl: 24px; --font-size-2xl: 1.25rem; }
    #dashboard-container { padding: var(--spacing-md); gap: var(--spacing-md); }
    .widget { padding: var(--spacing-md); }
    .auth-card { padding: var(--spacing-lg); border: none; background: transparent; box-shadow: none; }
    .stats-row { flex-direction: column; gap: var(--spacing-xs); text-align: center; }
    .dropdown-filters { flex-direction: column; }
    .bottom-sheet { padding: var(--spacing-lg); border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
}