/* ============================================
   EDUTRACK PWA — STYLES (CSS Custom Properties)
   Color Theme: Deep Blue / Sky Blue / Orange
   ============================================ */

/* ==========================================
   CSS VARIABLES
   ========================================== */
:root {
    /* Brand Colors */
    --color-primary: #1e3a8a;
    --color-primary-light: #dbeafe;
    --color-primary-dark: #1e3a5f;
    --color-secondary: #0284c7;
    --color-secondary-light: #e0f2fe;
    --color-accent: #ea580c;
    --color-accent-light: #ffedd5;

    /* Semantic Colors */
    --color-success: #16a34a;
    --color-success-light: #dcfce7;
    --color-warning: #eab308;
    --color-warning-light: #fef9c3;
    --color-danger: #dc2626;
    --color-danger-light: #fee2e2;
    --color-info: #0891b2;
    --color-info-light: #cffafe;

    /* Neutrals */
    --color-white: #ffffff;
    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-300: #cbd5e1;
    --color-slate-400: #94a3b8;
    --color-slate-500: #64748b;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;

    /* Borders & Radius */
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition: 200ms ease;
    --transition-slow: 300ms ease;
}

/* Dark Mode */
.dark {
    --color-white: #0f172a;
    --color-slate-50: #1e293b;
    --color-slate-100: #334155;
    --color-slate-200: #475569;
    --color-slate-300: #64748b;
    --color-slate-400: #94a3b8;
    --color-slate-500: #cbd5e1;
    --color-slate-600: #e2e8f0;
    --color-slate-700: #f1f5f9;
    --color-slate-800: #f8fafc;
    --color-slate-900: #ffffff;
    --color-primary-light: color-mix(in srgb, var(--color-primary) 20%, transparent);
    --color-secondary-light: color-mix(in srgb, var(--color-secondary) 20%, transparent);
    --color-accent-light: color-mix(in srgb, var(--color-accent) 20%, transparent);
    --color-success-light: color-mix(in srgb, var(--color-success) 20%, transparent);
    --color-warning-light: color-mix(in srgb, var(--color-warning) 20%, transparent);
    --color-danger-light: color-mix(in srgb, var(--color-danger) 20%, transparent);
    --color-info-light: color-mix(in srgb, var(--color-info) 20%, transparent);
}

/* ==========================================
   RESET & BASE
   ========================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-slate-800);
    background: var(--color-slate-100);
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0 0 0.5em;
    font-weight: 600;
    line-height: 1.3;
}

p {
    margin: 0 0 1em;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

/* ==========================================
   UTILITY CLASSES
   ========================================== */
.hidden {
    display: none !important;
}

.flex {
    display: flex;
}

.flex-1 {
    flex: 1;
}

.flex-wrap {
    flex-wrap: wrap;
}

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

.items-end {
    align-items: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-end {
    justify-content: flex-end;
}

.gap-1 {
    gap: var(--spacing-1);
}

.gap-2 {
    gap: var(--spacing-2);
}

.gap-3 {
    gap: var(--spacing-3);
}

.gap-4 {
    gap: var(--spacing-4);
}

.space-y-2>*+* {
    margin-top: var(--spacing-2);
}

.space-y-3>*+* {
    margin-top: var(--spacing-3);
}

.space-y-4>*+* {
    margin-top: var(--spacing-4);
}

.space-y-5>*+* {
    margin-top: var(--spacing-5);
}

.space-y-6>*+* {
    margin-top: var(--spacing-6);
}

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

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

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

.text-xs {
    font-size: var(--font-size-xs);
}

.text-sm {
    font-size: var(--font-size-sm);
}

.text-lg {
    font-size: var(--font-size-lg);
}

.text-xl {
    font-size: var(--font-size-xl);
}

.text-2xl {
    font-size: var(--font-size-2xl);
}

.font-medium {
    font-weight: 500;
}

.font-bold {
    font-weight: 700;
}

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

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

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

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

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

.text-muted {
    color: var(--color-slate-500);
}

.text-slate-400 {
    color: var(--color-slate-400);
}

.text-slate-500 {
    color: var(--color-slate-500);
}

.text-slate-600 {
    color: var(--color-slate-600);
}

.text-slate-700 {
    color: var(--color-slate-700);
}

.text-slate-800 {
    color: var(--color-slate-800);
}

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

.text-green-600 {
    color: #16a34a;
}

.text-blue-600 {
    color: #2563eb;
}

.text-indigo-600 {
    color: #4f46e5;
}

.text-pink-500 {
    color: #ec4899;
}

.text-orange-500 {
    color: #f97316;
}

.text-orange-400 {
    color: #fb923c;
}

.text-orange-300 {
    color: #fdba74;
}

.text-red-600 {
    color: #dc2626;
}

.text-yellow-600 {
    color: #ca8a04;
}

.text-yellow-500 {
    color: #eab308;
}

.text-blue-500 {
    color: #3b82f6;
}

.bg-primary {
    background-color: var(--color-primary);
}

.bg-primary-light {
    background-color: var(--color-primary-light);
}

.bg-secondary {
    background-color: var(--color-secondary);
}

.bg-secondary-light {
    background-color: var(--color-secondary-light);
}

.bg-accent {
    background-color: var(--color-accent);
}

.bg-accent-light {
    background-color: var(--color-accent-light);
}

.bg-white {
    background-color: var(--color-white);
}

.bg-slate-50 {
    background-color: var(--color-slate-50);
}

.bg-slate-100 {
    background-color: var(--color-slate-100);
}

.bg-green-50 {
    background-color: #f0fdf4;
}

.bg-green-100 {
    background-color: #dcfce7;
}

.bg-orange-50 {
    background-color: #fff7ed;
}

.bg-blue-50 {
    background-color: #eff6ff;
}

.w-8 {
    width: 2rem;
}

.w-16 {
    width: 4rem;
}

.w-20 {
    width: 5rem;
}

.w-24 {
    width: 6rem;
}

.w-28 {
    width: 7rem;
}

.w-32 {
    width: 8rem;
}

.w-full {
    width: 100%;
}

.h-8 {
    height: 2rem;
}

.h-16 {
    height: 4rem;
}

.h-full {
    height: 100%;
}

.min-h-screen {
    min-height: 100vh;
}

.max-h-64 {
    max-height: 16rem;
}

.max-h-96 {
    max-height: 24rem;
}

.max-w-3xl {
    max-width: 48rem;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.mr-2 {
    margin-right: var(--spacing-2);
}

.mb-1 {
    margin-bottom: var(--spacing-1);
}

.mb-2 {
    margin-bottom: var(--spacing-2);
}

.mb-4 {
    margin-bottom: var(--spacing-4);
}

.mb-6 {
    margin-bottom: var(--spacing-6);
}

.my-4 {
    margin-top: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.mt-4 {
    margin-top: var(--spacing-4);
}

.pl-6 {
    padding-left: var(--spacing-6);
}

.p-2 {
    padding: var(--spacing-2);
}

.p-4 {
    padding: var(--spacing-4);
}

.p-8 {
    padding: var(--spacing-8);
}

.px-3 {
    padding-left: var(--spacing-3);
    padding-right: var(--spacing-3);
}

.px-4 {
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
}

.py-1\.5 {
    padding-top: 0.375rem;
    padding-bottom: 0.375rem;
}

.py-3 {
    padding-top: var(--spacing-3);
    padding-bottom: var(--spacing-3);
}

.py-4 {
    padding-top: var(--spacing-4);
    padding-bottom: var(--spacing-4);
}

.py-8 {
    padding-top: var(--spacing-8);
    padding-bottom: var(--spacing-8);
}

.rounded {
    border-radius: var(--radius);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-xl {
    border-radius: var(--radius-xl);
}

.rounded-full {
    border-radius: var(--radius-full);
}

.border {
    border: 1px solid var(--color-slate-200);
}

.border-b {
    border-bottom: 1px solid var(--color-slate-200);
}

.border-r {
    border-right: 1px solid var(--color-slate-200);
}

.border-orange-200 {
    border-color: #fed7aa;
}

.border-blue-200 {
    border-color: #bfdbfe;
}

.shadow {
    box-shadow: var(--shadow);
}

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.overflow-hidden {
    overflow: hidden;
}

.overflow-y-auto {
    overflow-y: auto;
}

.transition-colors {
    transition: color var(--transition), background-color var(--transition);
}

.transition-opacity {
    transition: opacity var(--transition);
}

.opacity-0 {
    opacity: 0;
}

.opacity-50 {
    opacity: 0.5;
}

.opacity-100 {
    opacity: 1;
}

.cursor-pointer {
    cursor: pointer;
}

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.z-10 {
    z-index: 10;
}

/* Grid */
.grid {
    display: grid;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.col-span-2 {
    grid-column: span 2 / span 2;
}

@media (min-width: 768px) {
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .md\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .md\:col-span-1 {
        grid-column: span 1 / span 1;
    }

    .md\:col-span-2 {
        grid-column: span 2 / span 2;
    }

    .md\:flex {
        display: flex;
    }

    .md\:hidden {
        display: none;
    }

    .md\:block {
        display: block;
    }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .lg\:col-span-1 {
        grid-column: span 1 / span 1;
    }

    .lg\:col-span-2 {
        grid-column: span 2 / span 2;
    }
}

/* ==========================================
   ICONS
   ========================================== */
.icon {
    width: 1.25rem;
    height: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon svg {
    width: 100%;
    height: 100%;
}

.icon-sm {
    width: 1rem;
    height: 1rem;
}

.icon-lg {
    width: 1.5rem;
    height: 1.5rem;
}

.icon-xl {
    width: 2rem;
    height: 2rem;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ==========================================
   APP LAYOUT
   ========================================== */
#app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-slate-200);
    padding: var(--spacing-3) var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.header-title {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.header-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
    color: var(--color-primary);
}

.app-nav {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-slate-200);
    padding: var(--spacing-2) var(--spacing-4);
    gap: var(--spacing-2);
    overflow-x: auto;
    flex-wrap: wrap;
}

@media (max-width: 767px) {
    .app-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-white);
        box-shadow: var(--shadow-lg);
        z-index: 40;
        padding: var(--spacing-2);
    }
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-slate-600);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-item:hover {
    background: var(--color-slate-100);
    color: var(--color-primary);
}

.nav-item.nav-active {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.app-main {
    flex: 1;
    overflow-y: auto;
    padding-bottom: var(--spacing-8);
}

/* ==========================================
   CARDS
   ========================================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--color-slate-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3);
}

.card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: var(--spacing-4);
}

.card-footer {
    padding: var(--spacing-4);
    border-top: 1px solid var(--color-slate-100);
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.5;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-white);
}

.btn-secondary:hover {
    opacity: 0.9;
}

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

.btn-accent:hover {
    opacity: 0.9;
}

.btn-outline {
    background: transparent;
    border-color: var(--color-slate-300);
    color: var(--color-slate-700);
}

.btn-outline:hover {
    background: var(--color-slate-100);
}

.btn-danger {
    background: var(--color-danger);
    color: var(--color-white);
}

.btn-danger:hover {
    opacity: 0.9;
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius);
    border: none;
    background: transparent;
    color: var(--color-slate-600);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-icon:hover {
    background: var(--color-slate-100);
    color: var(--color-slate-800);
}

.btn-icon.btn-danger:hover {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

/* ==========================================
   FORMS
   ========================================== */
.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-slate-700);
    margin-bottom: var(--spacing-1);
}

.form-input {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-slate-300);
    border-radius: var(--radius);
    background: var(--color-white);
    transition: border-color var(--transition), box-shadow var(--transition);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input::placeholder {
    color: var(--color-slate-400);
}

.form-input-file {
    padding: var(--spacing-2);
    font-size: var(--font-size-xs);
}

textarea.form-input {
    resize: vertical;
    min-height: 80px;
}

.form-checkbox,
.form-radio {
    width: 1rem;
    height: 1rem;
    accent-color: var(--color-primary);
}

.form-section {
    padding: var(--spacing-4);
    border: 1px solid var(--color-slate-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
    background: var(--color-slate-50);
}

.form-section-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* ==========================================
   LIST ITEMS
   ========================================== */

.list-item {
    padding: var(--spacing-3) var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-slate-100);
    cursor: pointer;
    transition: background var(--transition);
}

.list-item:last-child {
    border-bottom: none;
}

.list-item:hover {
    background: var(--color-slate-50);
}

.list-item-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.list-item-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.list-item-title {
    font-weight: 500;
    font-size: var(--font-size-sm);
    margin: 0;
}

.list-item-subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-slate-500);
    margin: 0;
}

.list-item-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* ==========================================
   BADGES
   ========================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.badge-secondary {
    background: var(--color-secondary-light);
    color: var(--color-secondary);
}

.badge-accent {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.badge-info {
    background: var(--color-info-light);
    color: var(--color-info);
}

.badge-success {
    background: var(--color-success-light);
    color: var(--color-success);
}

.badge-danger {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

/* ==========================================
   STATS GRID
   ========================================== */
.grid-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-3);
}

@media (min-width: 768px) {
    .grid-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

.grid-stat {
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}

.grid-stat:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.grid-stat-icon {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-2);
}

.grid-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.grid-stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-slate-600);
}

/* ==========================================
   MODAL
   ========================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 100;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 28rem;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.modal-lg {
    max-width: 48rem;
}

.modal-header {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--color-slate-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
}

.modal-body {
    padding: var(--spacing-4);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--spacing-4);
    border-top: 1px solid var(--color-slate-200);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
}

/* ==========================================
   TOAST
   ========================================== */
.toast {
    position: fixed;
    bottom: var(--spacing-4);
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 200;
    transition: transform var(--transition-slow);
}

.toast-show {
    transform: translateX(-50%) translateY(0);
}

.toast-success {
    background: var(--color-success);
    color: var(--color-white);
}

.toast-error {
    background: var(--color-danger);
    color: var(--color-white);
}

.toast-warning {
    background: var(--color-warning);
    color: var(--color-slate-900);
}

.toast-info {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ==========================================
   ANIMATIONS
   ========================================== */
.anim-fade {
    animation: fadeIn var(--transition-slow) ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.anim-fade-out {
    opacity: 0;
    transition: opacity 100ms ease;
}

/* ==========================================
   INFO BLOCKS
   ========================================== */
.info-block {
    padding: var(--spacing-3);
    background: var(--color-slate-50);
    border-radius: var(--radius);
}

.info-label {
    font-size: var(--font-size-xs);
    color: var(--color-slate-500);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-1);
    display: block;
}

.info-value {
    font-weight: 500;
    display: block;
}

/* ==========================================
   LOGIN SCREEN
   ========================================== */
/* ==========================================
   AUTH SCREEN (LOGIN)
   ========================================== */
.auth-screen {
    min-height: 100vh;
    min-height: 100dvh;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    width: 100%;
    max-width: 360px;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2.5rem;
    color: white;
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 900;
    color: white;
    margin: 0;
}

.auth-subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    margin: 0.25rem 0 0;
}

.auth-form {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-xl, 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1));
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
}

/* Input with icon */
.input-icon-wrap {
    position: relative;
}

.input-icon {
    position: absolute;
    left: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-slate-400);
    pointer-events: none;
}

.input-icon-wrap .form-input {
    padding-left: 2.5rem;
}

/* ==========================================
   REPORT CARD STYLES
   ========================================== */
.report-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.report-accent {
    height: 6px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
}

.report-header {
    padding: var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 2px solid var(--color-slate-200);
}

.report-school {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.report-logo {
    width: 4rem;
    height: 4rem;
    object-fit: contain;
}

.report-logo-placeholder {
    width: 4rem;
    height: 4rem;
    background: var(--color-primary-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.report-school-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
}

.report-school-slogan {
    font-size: var(--font-size-sm);
    color: var(--color-slate-500);
    font-style: italic;
    margin: 0;
}

.report-title {
    text-align: right;
}

.report-title h2 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
}

.report-title p {
    font-size: var(--font-size-sm);
    color: var(--color-slate-500);
    margin: 0;
}

.report-student-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--color-slate-50);
}

@media (min-width: 640px) {
    .report-student-info {
        grid-template-columns: repeat(4, 1fr);
    }
}

.report-table {
    width: 100%;
    border-collapse: collapse;
}

.report-table th,
.report-table td {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--color-slate-200);
}

.report-table th {
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.report-table tfoot td {
    background: var(--color-slate-100);
    font-weight: 600;
}

.report-signatures {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
    padding: var(--spacing-8) var(--spacing-6);
}

.signature-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-slate-700);
    margin-bottom: var(--spacing-8);
}

.signature-line {
    border-bottom: 1px solid var(--color-slate-400);
    margin-bottom: var(--spacing-2);
}

.signature-caption {
    font-size: var(--font-size-xs);
    color: var(--color-slate-500);
}

.report-actions {
    padding: var(--spacing-4) var(--spacing-6);
    text-align: center;
    background: var(--color-slate-50);
}

/* ==========================================
   PRINT STYLES
   ========================================== */
@media print {
    body {
        background: white;
    }

    .no-print {
        display: none !important;
    }

    .app-header,
    .app-nav {
        display: none !important;
    }

    .report-card {
        box-shadow: none;
        max-width: 100%;
    }
}

/* ==========================================
   SCROLLBAR
   ========================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-slate-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-slate-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-slate-400);
}

/* Hide scrollbar utility */
.scrollbar-hide::-webkit-scrollbar {
    display: none;
}

.scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
}