/* ==========================================================================
   BRAIN STORMERS — HOME PORTAL (design tokens from Class-5)
   ========================================================================== */

:root {
    --bg-app: #080c14;
    --bg-sidebar: #0e1422;
    --bg-card: #141b2d;
    --bg-card-hover: #1b253e;
    --bg-input: #0b0f1a;

    --border-color: rgba(255, 255, 255, 0.05);
    --border-color-hover: rgba(255, 255, 255, 0.12);

    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.15);

    --success: #10b981;
    --warning: #f59e0b;
    --danger: #f43f5e;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;

    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.1);

    --transition-speed: 0.22s;
    --transition-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-app: #f4f6fa;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f7ff;
    --bg-input: #f1f4f8;

    --border-color: rgba(99, 102, 241, 0.08);
    --border-color-hover: rgba(99, 102, 241, 0.16);

    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #8393a7;

    --primary: #4f46e5;
    --primary-hover: #3730a3;
    --primary-glow: rgba(79, 70, 229, 0.08);

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.06);
    --success-border: rgba(16, 185, 129, 0.15);

    --warning: #d97706;
    --warning-bg: rgba(217, 119, 6, 0.06);
    --warning-border: rgba(217, 119, 6, 0.15);

    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.06);
    --danger-border: rgba(239, 68, 68, 0.15);

    --shadow-soft: 0 10px 30px rgba(79, 70, 229, 0.05), 0 2px 8px rgba(0, 0, 0, 0.02);
    --shadow-glow: 0 0 25px rgba(79, 70, 229, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-app);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

h1,
h2,
.portal-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.home-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.home-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 40px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-sidebar);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.home-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

a.home-brand.brand-home-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    transition: opacity var(--transition-speed);
}

a.home-brand.brand-home-link:hover {
    opacity: 0.88;
}

.brand-logo {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), #818cf8);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 22px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.brand-info h1 {
    font-size: 22px;
    line-height: 1.1;
    letter-spacing: -0.5px;
}

.brand-info span {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.75px;
}

.header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.btn-secondary {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color-hover);
}

.btn-icon-only {
    padding: 10px;
    width: 40px;
    height: 40px;
}

.notif-btn {
    position: relative;
}

.notif-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 18px;
    height: 18px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--danger);
    color: white;
    font-size: 11px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-sidebar);
    line-height: 1;
}

.text-muted {
    color: var(--text-muted);
}

.text-center {
    text-align: center;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 2000;
}

.modal-backdrop.active {
    display: flex;
}

.modal-container {
    width: 100%;
    max-width: 520px;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.modal-container.modal-small {
    max-width: 520px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 16px;
    letter-spacing: -0.2px;
}

.modal-close {
    border: 0;
    background: transparent;
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 22px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.modal-close:hover {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.modal-body {
    padding: 16px 18px;
}

.modal-footer {
    padding: 14px 18px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

.notif-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.notif-item {
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 12px;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.notif-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
}

.notif-title {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 6px;
}

.notif-meta {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.notif-empty {
    margin-top: 10px;
}

.home-main {
    flex: 1;
    padding: 40px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.portal-intro {
    margin-bottom: 36px;
    text-align: center;
}

.portal-intro h2 {
    font-size: 28px;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.portal-intro p {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 480px;
    margin: 0 auto;
}

.portal-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 8px 14px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
    }

    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* ==========================================================================
   CLASS CARDS GRID
   ========================================================================== */

.class-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 18px;
}

.class-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 24px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    cursor: pointer;
    transition:
        transform var(--transition-speed) var(--transition-elastic),
        border-color var(--transition-speed),
        box-shadow var(--transition-speed),
        background-color var(--transition-speed);
}

.class-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.25);
    box-shadow: var(--shadow-soft);
    background-color: var(--bg-card-hover);
}

.class-card:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.class-card.unavailable {
    opacity: 0.55;
    cursor: not-allowed;
}

.class-card.unavailable:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border-color);
    background-color: var(--bg-card);
}

.class-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: var(--bg-app);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    z-index: 2;
}

.class-card-label {
    z-index: 2;
}

.class-card-label h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 22px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 4px;
}

.class-card-label span {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.class-card-arrow {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-app);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--text-muted);
    z-index: 2;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.class-card:hover .class-card-arrow {
    background-color: var(--primary);
    color: white;
}

.card-bg-gradient {
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    transform: translate(30%, -30%);
    z-index: 1;
    pointer-events: none;
}

/* Per-card accent colors */
.class-card[data-variant="indigo"] .class-card-icon {
    color: #818cf8;
    background-color: rgba(129, 140, 248, 0.1);
}

.class-card[data-variant="indigo"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(129, 140, 248, 0.12) 0%, transparent 70%);
}

.class-card[data-variant="emerald"] .class-card-icon {
    color: var(--success);
    background-color: rgba(16, 185, 129, 0.1);
}

.class-card[data-variant="emerald"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
}

.class-card[data-variant="amber"] .class-card-icon {
    color: var(--warning);
    background-color: rgba(245, 158, 11, 0.1);
}

.class-card[data-variant="amber"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
}

.class-card[data-variant="sky"] .class-card-icon {
    color: #38bdf8;
    background-color: rgba(56, 189, 248, 0.1);
}

.class-card[data-variant="sky"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(56, 189, 248, 0.1) 0%, transparent 70%);
}

.class-card[data-variant="rose"] .class-card-icon {
    color: #fb7185;
    background-color: rgba(251, 113, 133, 0.1);
}

.class-card[data-variant="rose"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(251, 113, 133, 0.1) 0%, transparent 70%);
}

.class-card[data-variant="violet"] .class-card-icon {
    color: #a78bfa;
    background-color: rgba(167, 139, 250, 0.1);
}

.class-card[data-variant="violet"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(167, 139, 250, 0.12) 0%, transparent 70%);
}

/* Light mode specific variants for card grid on home page */
[data-theme="light"] .class-card[data-variant="indigo"] .class-card-icon {
    color: #4f46e5;
    background-color: rgba(79, 70, 229, 0.08);
}
[data-theme="light"] .class-card[data-variant="indigo"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(79, 70, 229, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .class-card[data-variant="emerald"] .class-card-icon {
    color: #059669;
    background-color: rgba(16, 185, 129, 0.08);
}
[data-theme="light"] .class-card[data-variant="emerald"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .class-card[data-variant="amber"] .class-card-icon {
    color: #d97706;
    background-color: rgba(245, 158, 11, 0.08);
}
[data-theme="light"] .class-card[data-variant="amber"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .class-card[data-variant="sky"] .class-card-icon {
    color: #0284c7;
    background-color: rgba(56, 189, 248, 0.08);
}
[data-theme="light"] .class-card[data-variant="sky"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(56, 189, 248, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .class-card[data-variant="rose"] .class-card-icon {
    color: #e11d48;
    background-color: rgba(251, 113, 133, 0.08);
}
[data-theme="light"] .class-card[data-variant="rose"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(251, 113, 133, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .class-card[data-variant="violet"] .class-card-icon {
    color: #7c3aed;
    background-color: rgba(167, 139, 250, 0.08);
}
[data-theme="light"] .class-card[data-variant="violet"] .card-bg-gradient {
    background: radial-gradient(circle, rgba(167, 139, 250, 0.08) 0%, transparent 70%);
}

.class-num-dual {
    display: flex;
    align-items: center;
    gap: 2px;
    font-size: 16px;
}

/* Admission card — featured */
.class-card.admission-card {
    grid-column: 1 / -1;
    max-width: 100%;
    flex-direction: row;
    align-items: center;
    padding: 28px 32px;
    border-color: rgba(99, 102, 241, 0.2);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(99, 102, 241, 0.06) 100%);
}

.admission-card .class-card-body {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
    z-index: 2;
}

.admission-card .class-card-label h3 {
    font-size: 26px;
}

.admission-card .class-card-arrow {
    position: static;
    width: 40px;
    height: 40px;
    font-size: 14px;
}

@media (max-width: 640px) {
    .home-header {
        padding: 20px;
    }

    .home-main {
        padding: 24px 20px;
    }

    .class-card.admission-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .admission-card .class-card-body {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }
}

/* Premium Neon-Green Paid Highlights */
.notif-item.paid-highlight {
    border-left: 4px solid #10b981 !important;
    background: rgba(16, 185, 129, 0.06) !important;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.15) !important;
}
[data-theme="light"] .notif-item.paid-highlight {
    background: rgba(16, 185, 129, 0.04) !important;
}
.neon-paid-badge {
    color: #10b981 !important;
    font-weight: 700;
    text-shadow: 0 0 6px rgba(16, 185, 129, 0.4);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Limit Exceeded Red Highlights */
.limit-exceeded {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25) !important;
    color: #ef4444 !important;
}