/* Lander County Substitute Management System - Premium Enhanced Styles */

/* LCSD Brand Colors - Matching District Standards */
:root {
    --lcsd-burgundy: #8B2635;
    --lcsd-gold: #D4A574;
    --lcsd-sage: #87A96B;
    --lcsd-dark-burgundy: #6B1E2A;
    --lcsd-light-gold: #E8C89C;
    --lcsd-light-sage: #A8C087;
    --lcsd-cream: #F7F4F0;
    --lcsd-charcoal: #2D2D2D;
    
    /* Extended Professional Palette */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    /* Shadows & Gradients */
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-strong: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    --gradient-primary: linear-gradient(135deg, var(--lcsd-burgundy), var(--lcsd-dark-burgundy));
    --gradient-gold: linear-gradient(135deg, var(--lcsd-gold), var(--lcsd-light-gold));
    --gradient-sage: linear-gradient(135deg, var(--lcsd-sage), var(--lcsd-light-sage));
}

/* Base styling with premium typography */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--lcsd-charcoal);
    background-color: var(--lcsd-cream);
    font-feature-settings: 'kern' 1, 'liga' 1;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Load Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* LCSD Brand Utility Classes */
.bg-lcsd-burgundy { background-color: var(--lcsd-burgundy) !important; }
.bg-lcsd-gold { background-color: var(--lcsd-gold) !important; }
.bg-lcsd-sage { background-color: var(--lcsd-sage) !important; }
.bg-lcsd-cream { background-color: var(--lcsd-cream) !important; }
.text-lcsd-burgundy { color: var(--lcsd-burgundy) !important; }
.text-lcsd-gold { color: var(--lcsd-gold) !important; }
.text-lcsd-sage { color: var(--lcsd-sage) !important; }
.text-lcsd-charcoal { color: var(--lcsd-charcoal) !important; }

.gradient-primary { background: var(--gradient-primary); }
.gradient-gold { background: var(--gradient-gold); }
.gradient-sage { background: var(--gradient-sage); }

/* Premium Navigation */
nav {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-medium);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 50;
}

nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

nav:hover::before {
    opacity: 1;
}

.nav-brand {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    font-size: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.nav-link {
    position: relative;
    padding: 0.75rem 1.5rem;
    margin: 0 0.25rem;
    border-radius: 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: rgba(255,255,255,0.9);
    font-weight: 500;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.1);
    border-radius: 0.5rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-link:hover {
    color: white;
    transform: translateY(-1px);
}

.nav-link:hover::before {
    opacity: 1;
}

.nav-link.active {
    background: rgba(255,255,255,0.15);
    color: white;
}

/* Premium Card System */
.card {
    background: white;
    border-radius: 1rem;
    border: 1px solid rgba(139, 38, 53, 0.08);
    box-shadow: var(--shadow-soft);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-strong);
    border-color: rgba(139, 38, 53, 0.15);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-portal {
    background: linear-gradient(135deg, white, var(--lcsd-cream));
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.card-portal::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    padding: 2px;
    background: var(--gradient-primary);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: xor;
    -webkit-mask-composite: xor;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card-portal:hover::after {
    opacity: 1;
}

.card-stats {
    background: linear-gradient(135deg, white, rgba(255,255,255,0.8));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.card-request {
    background: white;
    border-left: 4px solid transparent;
    transition: all 0.3s ease;
}

.card-request.priority-normal { border-left-color: var(--lcsd-sage); }
.card-request.priority-urgent { border-left-color: var(--warning); }
.card-request.priority-emergency { 
    border-left-color: var(--error);
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: var(--shadow-soft); }
    50% { box-shadow: 0 0 20px rgba(239, 68, 68, 0.3), var(--shadow-soft); }
}

/* Premium Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 0.875rem;
    line-height: 1.25rem;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    user-select: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn:active {
    transform: translateY(0);
    transition: transform 0.1s ease;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    pointer-events: none;
}

/* Button Variants */
.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(139, 38, 53, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px 0 rgba(139, 38, 53, 0.35);
}

.btn-secondary {
    background: var(--gradient-gold);
    color: var(--lcsd-charcoal);
    box-shadow: 0 4px 14px 0 rgba(212, 165, 116, 0.25);
}

.btn-accent {
    background: var(--gradient-sage);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(135, 169, 107, 0.25);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--lcsd-burgundy);
    color: var(--lcsd-burgundy);
}

.btn-outline:hover {
    background: var(--lcsd-burgundy);
    color: white;
}

.btn-ghost {
    background: rgba(255,255,255,0.1);
    color: currentColor;
    backdrop-filter: blur(10px);
}

.btn-icon {
    padding: 0.75rem;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
}

/* Button Sizes */
.btn-sm { padding: 0.5rem 1rem; font-size: 0.8rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1rem; }
.btn-xl { padding: 1.25rem 2.5rem; font-size: 1.125rem; }

/* Premium Form System */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--lcsd-charcoal);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-label.required::after {
    content: ' *';
    color: var(--error);
    font-weight: 700;
}

.form-control {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid rgba(139, 38, 53, 0.1);
    border-radius: 0.75rem;
    background: white;
    font-size: 0.875rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--lcsd-charcoal);
    position: relative;
}

.form-control:focus {
    outline: none;
    border-color: var(--lcsd-burgundy);
    box-shadow: 0 0 0 4px rgba(139, 38, 53, 0.1);
    transform: translateY(-1px);
}

.form-control:hover:not(:focus) {
    border-color: rgba(139, 38, 53, 0.2);
}

.form-control::placeholder {
    color: rgba(45, 45, 45, 0.5);
    font-weight: 400;
}

/* File Upload Enhancement */
.file-upload {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border: 2px dashed rgba(139, 38, 53, 0.2);
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--lcsd-cream), white);
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-upload:hover {
    border-color: var(--lcsd-burgundy);
    background: linear-gradient(135deg, white, var(--lcsd-cream));
    transform: translateY(-2px);
}

.file-upload.dragover {
    border-color: var(--lcsd-gold);
    background: linear-gradient(135deg, rgba(212, 165, 116, 0.1), white);
    transform: scale(1.02);
}

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-upload-icon {
    font-size: 3rem;
    color: var(--lcsd-burgundy);
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.file-upload:hover .file-upload-icon {
    transform: scale(1.1);
}

.file-upload-text {
    font-weight: 600;
    color: var(--lcsd-charcoal);
    margin-bottom: 0.5rem;
}

.file-upload-hint {
    font-size: 0.8rem;
    color: rgba(45, 45, 45, 0.6);
}

/* Form validation styles */
.form-control.error {
    border-color: var(--error);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.form-control.success {
    border-color: var(--success);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.form-error {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: 0.5rem;
    font-weight: 500;
}

.form-success {
    color: var(--success);
    font-size: 0.8rem;
    margin-top: 0.5rem;
    font-weight: 500;
}

/* Status badges */
.status-pending {
    background-color: #FEF3C7;
    color: #92400E;
}

.status-approved {
    background-color: #DBEAFE;
    color: #1E40AF;
}

.status-assigned {
    background-color: #D1FAE5;
    color: #065F46;
}

.status-completed {
    background-color: #F3F4F6;
    color: #374151;
}

.status-cancelled {
    background-color: #FEE2E2;
    color: #991B1B;
}

/* Priority indicators */
.priority-normal {
    border-left-color: #6B7280;
}

.priority-urgent {
    border-left-color: #F59E0B;
}

.priority-emergency {
    border-left-color: #EF4444;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

/* Mobile-First Responsive Design */
/* Mobile (default) */
.container {
    width: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
    margin-left: auto;
    margin-right: auto;
}

.grid-responsive {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

/* Tablet */
@media (min-width: 768px) {
    .container {
        max-width: 768px;
        padding-left: 2rem;
        padding-right: 2rem;
    }
    
    .grid-responsive {
        gap: 1.5rem;
    }
    
    .grid-md-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-md-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-md-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Desktop */
@media (min-width: 1024px) {
    .container {
        max-width: 1024px;
    }
    
    .grid-responsive {
        gap: 2rem;
    }
    
    .grid-lg-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-lg-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-lg-4 { grid-template-columns: repeat(4, 1fr); }
    .grid-lg-5 { grid-template-columns: repeat(5, 1fr); }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
}

/* Mobile Navigation Enhancements */
@media (max-width: 768px) {
    .nav-mobile {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        padding: 0.75rem 1rem;
    }
    
    .nav-brand {
        font-size: 1.25rem;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--gradient-primary);
        padding: 1rem;
        border-radius: 0 0 1rem 1rem;
        box-shadow: var(--shadow-medium);
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .nav-toggle {
        display: block;
        background: transparent;
        border: none;
        color: white;
        font-size: 1.5rem;
        cursor: pointer;
    }
    
    .main-content {
        padding-top: 5rem; /* Account for fixed nav */
    }
}

@media (min-width: 769px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-links {
        display: flex !important;
        align-items: center;
        gap: 0.5rem;
    }
}

/* Touch-Friendly Interactions */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px; /* iOS recommendation */
        padding: 0.875rem 1.5rem;
    }
    
    .nav-link {
        padding: 1rem 1.5rem;
    }
    
    .card:hover {
        transform: none; /* Disable hover effects on touch */
    }
    
    .card:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
}

/* PWA Enhancements */
.pwa-install-prompt {
    position: fixed;
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
    background: var(--gradient-primary);
    color: white;
    padding: 1rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-strong);
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
}

.pwa-install-prompt.show {
    transform: translateY(0);
    opacity: 1;
}

.pwa-offline-indicator {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background: var(--warning);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.8rem;
    z-index: 1000;
    transform: translateX(200px);
    opacity: 0;
    transition: all 0.3s ease;
}

.pwa-offline-indicator.show {
    transform: translateX(0);
    opacity: 1;
}

/* Loading states */
.loading {
    animation: spin 1s linear infinite;
}

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

/* Success/Error states */
.success-state {
    background-color: #F0FDF4;
    border-color: #10B981;
    color: #047857;
}

.error-state {
    background-color: #FEF2F2;
    border-color: #EF4444;
    color: #DC2626;
}

/* Modal backdrop */
.modal-backdrop {
    backdrop-filter: blur(2px);
}

/* Portal-specific styling */
.teacher-portal nav {
    background: linear-gradient(135deg, #1E3A8A, #3B82F6);
}

.admin-portal nav {
    background: linear-gradient(135deg, #14532D, #16A34A);
}

.substitute-portal nav {
    background: linear-gradient(135deg, #581C87, #8B5CF6);
}

/* Assignment card special states */
.assignment-today {
    border: 2px solid #3B82F6;
    background: linear-gradient(to right, #EFF6FF, #FFFFFF);
}

.assignment-urgent {
    border: 2px solid #F59E0B;
    background: linear-gradient(to right, #FFFBEB, #FFFFFF);
}

.assignment-emergency {
    border: 2px solid #EF4444;
    background: linear-gradient(to right, #FEF2F2, #FFFFFF);
    animation: pulse 3s infinite;
}

/* Stats cards */
.stat-card {
    background: linear-gradient(135deg, #FFFFFF, #F8FAFC);
    border: 1px solid #E2E8F0;
    transition: all 0.3s ease;
}

.stat-card:hover {
    border-color: #CBD5E1;
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Request timeline */
.request-timeline {
    position: relative;
}

.request-timeline::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #E5E7EB;
}

.request-timeline-item {
    position: relative;
    padding-left: 3rem;
}

.request-timeline-item::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 0.5rem;
    width: 0.5rem;
    height: 0.5rem;
    background-color: #3B82F6;
    border-radius: 50%;
    border: 2px solid #FFFFFF;
    box-shadow: 0 0 0 2px #3B82F6;
}

/* Print styles */
@media print {
    nav, .no-print {
        display: none !important;
    }
    
    .bg-gray-50 {
        background: white !important;
    }
    
    .shadow-md {
        box-shadow: none !important;
        border: 1px solid #E5E7EB !important;
    }
}

/* Accessibility improvements */
button:focus, 
input:focus, 
select:focus, 
textarea:focus {
    outline: 2px solid #3B82F6;
    outline-offset: 2px;
}

/* Screen reader only text */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .bg-gray-50 {
        background-color: #FFFFFF;
    }
    
    button {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}