/* ==================================================
   دانشجو360 — Mobile App PWA v1.0.0
   Aurora Premium Glassmorphism — Mobile First
   ================================================== */

:root {
    --bg-deep: #050514;
    --bg-1: #0f0c29;
    --bg-2: #1a1342;
    --bg-3: #24243e;
    --glass-bg: rgba(255, 255, 255, 0.07);
    --glass-border: rgba(255, 255, 255, 0.14);
    --glass-strong: rgba(255, 255, 255, 0.12);
    --text-1: #f8fafc;
    --text-2: #cbd5e1;
    --text-3: #94a3b8;
    --accent: #a78bfa;
    --accent-2: #f472b6;
    --accent-3: #38bdf8;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --radius-xl: 26px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-glow: 0 8px 32px rgba(167, 139, 250, 0.35);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Vazirmatn', 'Vazir', 'Tahoma', sans-serif;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

html, body {
    font-family: var(--font);
    background: var(--bg-deep);
    color: var(--text-1);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overscroll-behavior-y: none;
    user-select: none;
}

body {
    padding-top: var(--safe-top);
    padding-bottom: calc(80px + var(--safe-bottom));
    background:
        radial-gradient(ellipse at top, var(--bg-2), var(--bg-deep) 60%);
    background-attachment: fixed;
}

a { color: var(--accent); text-decoration: none; }
a:active { color: var(--accent-2); }

img { max-width: 100%; height: auto; }

/* ==================================================
   Aurora Background
   ================================================== */
.aurora-bg {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.orb-1 {
    width: 320px; height: 320px;
    background: radial-gradient(circle, #a78bfa, transparent 70%);
    top: -100px; right: -80px;
    animation: orb-float 22s ease-in-out infinite;
}

.orb-2 {
    width: 280px; height: 280px;
    background: radial-gradient(circle, #f472b6, transparent 70%);
    bottom: -50px; left: -100px;
    animation: orb-float 28s ease-in-out infinite reverse;
}

.orb-3 {
    width: 240px; height: 240px;
    background: radial-gradient(circle, #38bdf8, transparent 70%);
    top: 40%; right: -120px;
    animation: orb-float 32s ease-in-out infinite;
}

@keyframes orb-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.1); }
    66% { transform: translate(-30px, 20px) scale(0.95); }
}

.grid-mesh {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(167, 139, 250, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(167, 139, 250, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

/* ==================================================
   Glass Effect
   ================================================== */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-card);
}

/* ==================================================
   App Header (fixed top)
   ================================================== */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 12px 16px 10px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.app-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-logo {
    width: 38px; height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-glow);
    animation: pulse 3s ease infinite;
    font-size: 18px;
    font-weight: 800;
    flex-shrink: 0;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 8px 32px rgba(167, 139, 250, 0.35); }
    50% { box-shadow: 0 8px 32px rgba(167, 139, 250, 0.6); }
}

.app-name {
    font-size: 15px;
    font-weight: 800;
    line-height: 1.2;
}

.app-name .sub {
    font-size: 10px;
    color: var(--text-3);
    font-weight: 500;
    display: block;
}

.icon-btn {
    width: 38px; height: 38px;
    border-radius: 12px;
    background: var(--glass-strong);
    border: 1px solid var(--glass-border);
    color: var(--text-1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.icon-btn:active {
    transform: scale(0.92);
    background: var(--accent);
    color: white;
}

.icon-btn svg {
    width: 18px; height: 18px;
}

/* ==================================================
   Hero Card
   ================================================== */
.hero-card {
    margin: 16px;
    padding: 28px 22px;
    border-radius: var(--radius-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at center, rgba(167, 139, 250, 0.18), transparent 50%);
    animation: rotate-bg 18s linear infinite;
    pointer-events: none;
}

@keyframes rotate-bg {
    from { transform: rotate(0); }
    to { transform: rotate(360deg); }
}

.hero-card > * { position: relative; z-index: 1; }

.hero-icon {
    width: 80px; height: 80px;
    margin: 0 auto 16px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-glow);
    font-size: 32px;
    font-weight: 800;
}

.hero-title {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 6px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    color: var(--text-2);
    font-size: 13px;
    margin-bottom: 18px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 18px;
}

.hero-stat {
    padding: 12px 6px;
    border-radius: var(--radius-md);
    background: var(--glass-strong);
}

.hero-stat .num {
    font-size: 20px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.hero-stat .label {
    font-size: 10px;
    color: var(--text-3);
    margin-top: 4px;
}

/* ==================================================
   Buttons
   ================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 22px;
    border-radius: var(--radius-md);
    border: none;
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: white;
    box-shadow: 0 4px 20px rgba(167, 139, 250, 0.4);
}

.btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 2px 10px rgba(167, 139, 250, 0.3);
}

.btn-ghost {
    background: var(--glass-strong);
    color: var(--text-1);
    border: 1px solid var(--glass-border);
}

.btn-ghost:active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.btn-lg { padding: 16px 28px; font-size: 15px; }
.btn-sm { padding: 10px 16px; font-size: 12px; width: auto; }

/* ==================================================
   Forms
   ================================================== */
.form-group { margin-bottom: 14px; }

.form-label {
    display: block;
    font-size: 12px;
    color: var(--text-2);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-input, .form-select {
    width: 100%;
    padding: 13px 16px;
    border-radius: var(--radius-md);
    background: var(--glass-strong);
    border: 1px solid var(--glass-border);
    color: var(--text-1);
    font-family: var(--font);
    font-size: 14px;
    transition: var(--transition);
    -webkit-appearance: none;
    appearance: none;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(167, 139, 250, 0.15);
}

.form-input::placeholder { color: var(--text-3); }

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a78bfa' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 14px center;
    background-size: 16px;
    padding-left: 42px;
}

/* ==================================================
   Cards
   ================================================== */
.card {
    margin: 12px 16px;
    padding: 18px;
    border-radius: var(--radius-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-1);
}

.card-title .sub {
    font-size: 11px;
    color: var(--text-3);
    font-weight: 500;
    display: block;
    margin-top: 2px;
}

/* ==================================================
   Quick Actions Grid
   ================================================== */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 16px;
}

.quick-action {
    padding: 18px 14px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: var(--text-1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.quick-action:active {
    transform: scale(0.96);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.quick-action .icon {
    width: 44px; height: 44px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.quick-action .icon svg { width: 22px; height: 22px; }

.quick-action .label {
    font-size: 12px;
    font-weight: 600;
}

.quick-action.purple .icon { background: linear-gradient(135deg, #a78bfa, #7c3aed); }
.quick-action.pink .icon { background: linear-gradient(135deg, #f472b6, #db2777); }
.quick-action.blue .icon { background: linear-gradient(135deg, #38bdf8, #0284c7); }
.quick-action.green .icon { background: linear-gradient(135deg, #34d399, #059669); }
.quick-action.orange .icon { background: linear-gradient(135deg, #fbbf24, #d97706); }
.quick-action.red .icon { background: linear-gradient(135deg, #f87171, #dc2626); }

/* ==================================================
   Stats Strip
   ================================================== */
.stats-strip {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 16px;
}

.stat-card {
    padding: 16px 14px;
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.stat-card .icon {
    width: 32px; height: 32px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.2), rgba(244, 114, 182, 0.2));
    color: var(--accent);
    margin-bottom: 8px;
}

.stat-card .icon svg { width: 18px; height: 18px; }

.stat-card .num {
    font-size: 22px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.stat-card .label {
    font-size: 10px;
    color: var(--text-3);
    margin-top: 4px;
}

/* ==================================================
   Course List
   ================================================== */
.course-list { padding: 0 16px; }

.course-item {
    padding: 14px;
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    cursor: pointer;
}

.course-item:active {
    transform: scale(0.98);
    border-color: var(--accent);
}

.course-icon {
    width: 38px; height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    font-weight: 700;
    flex-shrink: 0;
}

.course-info { flex: 1; min-width: 0; }

.course-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-1);
    margin-bottom: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.course-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 10px;
    color: var(--text-3);
}

.tag {
    padding: 2px 8px;
    border-radius: 8px;
    background: var(--glass-strong);
    font-size: 10px;
    color: var(--accent-3);
    font-weight: 600;
}

/* ==================================================
   Bottom Navigation (fixed)
   ================================================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 8px 12px calc(8px + var(--safe-bottom));
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    display: flex;
    gap: 4px;
    background: rgba(15, 12, 41, 0.85);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
}

.nav-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-3);
    font-family: var(--font);
    font-size: 10px;
    padding: 8px 4px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
    text-decoration: none;
}

.nav-btn svg { width: 20px; height: 20px; }

.nav-btn.active {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: white;
    box-shadow: var(--shadow-glow);
}

.nav-btn:active { transform: scale(0.92); }

/* ==================================================
   Alert / Notification
   ================================================== */
.alert {
    margin: 12px 16px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
    border: 1px solid;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.alert-info {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.35);
    color: var(--accent-3);
}

.alert-warning {
    background: rgba(251, 191, 36, 0.1);
    border-color: rgba(251, 191, 36, 0.35);
    color: var(--warning);
}

.alert-success {
    background: rgba(52, 211, 153, 0.1);
    border-color: rgba(52, 211, 153, 0.35);
    color: var(--success);
}

.alert-error {
    background: rgba(248, 113, 113, 0.1);
    border-color: rgba(248, 113, 113, 0.35);
    color: var(--danger);
}

.alert-icon {
    font-size: 18px;
    flex-shrink: 0;
}

/* ==================================================
   PWA Install Banner
   ================================================== */
.install-banner {
    position: fixed;
    bottom: 80px;
    left: 16px;
    right: 16px;
    z-index: 200;
    padding: 14px 16px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideUp 0.5s ease;
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.2), rgba(244, 114, 182, 0.15));
    border: 1px solid var(--accent);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.install-banner .icon {
    width: 40px; height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
    font-weight: 800;
}

.install-banner .text {
    flex: 1;
    font-size: 12px;
}

.install-banner .text strong {
    display: block;
    font-size: 13px;
    color: var(--text-1);
}

.install-banner .text span {
    color: var(--text-2);
    font-size: 11px;
}

.install-banner button {
    padding: 8px 14px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: white;
    border: none;
    font-family: var(--font);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
}

.install-banner .close {
    background: transparent;
    color: var(--text-3);
    padding: 4px 8px;
    font-size: 16px;
}

/* ==================================================
   Empty State
   ================================================== */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-3);
}

.empty-state .emoji {
    font-size: 48px;
    opacity: 0.5;
    margin-bottom: 12px;
}

/* ==================================================
   QR Code
   ================================================== */
.qr-container {
    text-align: center;
    padding: 24px 16px;
    margin: 16px;
    border-radius: var(--radius-lg);
}

.qr-container .qr-box {
    display: inline-block;
    padding: 16px;
    background: white;
    border-radius: var(--radius-md);
    margin: 16px 0;
}

.qr-container .qr-box svg { width: 200px; height: 200px; }

.qr-container h3 {
    font-size: 16px;
    color: var(--text-1);
    margin-bottom: 6px;
}

.qr-container p {
    font-size: 12px;
    color: var(--text-3);
}

/* ==================================================
   Utility
   ================================================== */
.text-center { text-align: center; }
.text-muted { color: var(--text-3); }
.text-gradient {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-1);
    margin: 20px 16px 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-title::before {
    content: '';
    width: 4px; height: 16px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
    border-radius: 2px;
}

/* ==================================================
   Animations
   ================================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.4s ease; }

.page-content { animation: fadeIn 0.4s ease; }

/* ==================================================
   iPhone Notch / Status Bar Support
   ================================================== */
@supports (padding: max(0px)) {
    body {
        padding-top: max(var(--safe-top), 0px);
        padding-bottom: max(calc(80px + var(--safe-bottom)), 80px);
    }
}

/* Dark mode is the default */
/* If user prefers light, we keep dark since it's an education app at night */