/**
 * TRAVO - Warm Yellow Theme with Diagonal Stripes
 * Modern, energetic, and accessible design system
 * WCAG AA Compliant for contrast ratios
 */

/* ================================
   CSS CUSTOM PROPERTIES (Variables)
   ================================ */
:root {
    /* Warm Yellow Primary Palette */
    --yellow-50: #FFFBEB;
    --yellow-100: #FEF3C7;
    --yellow-200: #FDE68A;
    --yellow-300: #FCD34D;
    --yellow-400: #FBBF24;
    --yellow-500: #F59E0B;  /* Main brand color */
    --yellow-600: #D97706;
    --yellow-700: #B45309;
    --yellow-800: #92400E;
    --yellow-900: #78350F;
    
    /* Complementary Warm Tones */
    --amber-500: #F59E0B;
    --amber-600: #D97706;
    --orange-500: #F97316;
    --orange-600: #EA580C;
    
    /* Neutral Grays (with warm undertone) */
    --warm-gray-50: #FAFAF9;
    --warm-gray-100: #F5F5F4;
    --warm-gray-200: #E7E5E4;
    --warm-gray-300: #D6D3D1;
    --warm-gray-400: #A8A29E;
    --warm-gray-500: #78716C;
    --warm-gray-600: #57534E;
    --warm-gray-700: #44403C;
    --warm-gray-800: #292524;
    --warm-gray-900: #1C1917;
    
    /* Accent Colors */
    --accent-green: #10B981;
    --accent-green-dark: #059669;
    --accent-blue: #3B82F6;
    --accent-red: #EF4444;
    
    /* Main Theme Colors */
    --primary-color: #F59E0B;
    --primary-dark: #D97706;
    --primary-light: #FCD34D;
    --secondary-color: #F97316;
    --accent-color: #10B981;
    --dark-color: #292524;
    
    /* Gradient Combinations */
    --gradient-primary: linear-gradient(135deg, #FBBF24 0%, #F59E0B 100%);
    --gradient-secondary: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
    --gradient-hero: linear-gradient(135deg, #FCD34D 0%, #F59E0B 50%, #D97706 100%);
    --gradient-warm: linear-gradient(180deg, #FFFBEB 0%, #FEF3C7 100%);
    --gradient-card: linear-gradient(145deg, #FFFFFF 0%, #FAFAF9 100%);
    
    /* Diagonal Stripe Pattern */
    --stripe-pattern: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 15px,
        rgba(251, 191, 36, 0.08) 15px,
        rgba(251, 191, 36, 0.08) 30px
    );
    
    --stripe-pattern-reverse: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 20px,
        rgba(251, 191, 36, 0.06) 20px,
        rgba(251, 191, 36, 0.06) 40px
    );
    
    --stripe-pattern-subtle: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 25px,
        rgba(252, 211, 77, 0.04) 25px,
        rgba(252, 211, 77, 0.04) 50px
    );
    
    /* Shadows with Yellow Tint */
    --shadow-xs: 0 1px 2px 0 rgba(146, 64, 14, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(146, 64, 14, 0.1), 0 1px 2px -1px rgba(146, 64, 14, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(146, 64, 14, 0.1), 0 2px 4px -2px rgba(146, 64, 14, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(146, 64, 14, 0.1), 0 4px 6px -4px rgba(146, 64, 14, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(146, 64, 14, 0.1), 0 8px 10px -6px rgba(146, 64, 14, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(146, 64, 14, 0.25);
    --shadow-yellow: 0 8px 16px -4px rgba(245, 158, 11, 0.3);
    --shadow-yellow-lg: 0 12px 24px -6px rgba(245, 158, 11, 0.4);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Typography */
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ================================
   BODY & BASE STYLES
   ================================ */
body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--warm-gray-800);
    background: linear-gradient(180deg, #FFFBEB 0%, var(--warm-gray-50) 100%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

/* Subtle diagonal stripe overlay on body */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--stripe-pattern-subtle);
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
}

body > * {
    position: relative;
    z-index: 1;
}

/* ================================
   HERO SECTION
   ================================ */
.hero {
    background: var(--gradient-hero);
    color: var(--warm-gray-900);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
    border-bottom: 4px solid var(--yellow-600);
}

/* Diagonal stripe pattern overlay */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--stripe-pattern);
    opacity: 1;
    z-index: 1;
}

/* Animated gradient overlay */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(251, 191, 36, 0.2) 0%, transparent 60%),
        radial-gradient(circle at 40% 70%, rgba(249, 115, 22, 0.15) 0%, transparent 50%);
    animation: heroGlow 15s ease-in-out infinite;
    z-index: 2;
}

@keyframes heroGlow {
    0%, 100% { 
        opacity: 1; 
        transform: translateY(0) scale(1);
    }
    50% { 
        opacity: 0.7; 
        transform: translateY(-20px) scale(1.05);
    }
}

.hero-content {
    position: relative;
    z-index: 10;
}

.hero h1 {
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    color: var(--warm-gray-900);
}

.hero .lead {
    color: var(--warm-gray-800) !important;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
    font-weight: 500;
}

/* ================================
   NAVBAR
   ================================ */
.navbar {
    background: rgba(255, 255, 255, 0.97) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 8px rgba(146, 64, 14, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 2px solid var(--yellow-200);
    position: relative;
}

/* Subtle stripe pattern in navbar */
.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--stripe-pattern-subtle);
    opacity: 0.3;
    pointer-events: none;
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--yellow-400);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.75rem;
    letter-spacing: -0.8px;
    transition: transform 0.2s ease;
    position: relative;
    z-index: 2;
}

.navbar-brand:hover {
    transform: translateY(-2px);
}

.nav-link {
    font-weight: 600;
    color: var(--warm-gray-700) !important;
    transition: all 0.2s ease;
    padding: 0.625rem 1rem !important;
    border-radius: var(--radius-md);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    background-color: var(--yellow-50);
}

/* ================================
   BUTTONS
   ================================ */
.btn {
    font-weight: 600;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

/* Shimmer effect on hover */
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--warm-gray-900);
    box-shadow: var(--shadow-yellow);
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-yellow-lg);
    color: var(--warm-gray-900);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: 0 8px 16px -4px rgba(249, 115, 22, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -6px rgba(249, 115, 22, 0.4);
    color: white;
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: white;
    box-shadow: var(--shadow-sm);
}

.btn-outline-primary:hover {
    background: var(--gradient-primary);
    color: var(--warm-gray-900);
    transform: translateY(-2px);
    box-shadow: var(--shadow-yellow);
    border-color: var(--primary-color);
}

.btn-light {
    background: white;
    color: var(--primary-color);
    border: 2px solid transparent;
    box-shadow: var(--shadow-md);
    font-weight: 700;
}

.btn-light:hover {
    background: var(--yellow-50);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ================================
   CARDS
   ================================ */
.card {
    border: 2px solid var(--yellow-100);
    border-radius: var(--radius-xl);
    background: white;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
}

/* Stripe pattern on card hover */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--stripe-pattern-subtle);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--yellow-400);
}

.card:hover::before {
    opacity: 1;
}

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

.card-hover-lift:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-2xl);
}

.card-body {
    position: relative;
    z-index: 2;
}

/* ================================
   BADGES
   ================================ */
.badge {
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
}

.badge-premium,
.bg-primary-100 {
    background: var(--yellow-100) !important;
    color: var(--yellow-800) !important;
    border: 1px solid var(--yellow-300);
}

.bg-primary {
    background: var(--gradient-primary) !important;
    color: var(--warm-gray-900) !important;
}

.bg-success {
    background: var(--accent-green) !important;
    color: white !important;
}

.bg-warning {
    background: var(--yellow-400) !important;
    color: var(--warm-gray-900) !important;
}

.bg-info {
    background: var(--accent-blue) !important;
    color: white !important;
}

/* ================================
   CATEGORY ICONS
   ================================ */
.category-icon {
    font-size: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(245, 158, 11, 0.2));
}

.category-icon:hover {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 4px 8px rgba(245, 158, 11, 0.4));
}

/* ================================
   FORMS
   ================================ */
.form-control, .form-select {
    border-radius: var(--radius-md);
    border: 2px solid var(--yellow-200);
    padding: 0.875rem 1.25rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9375rem;
    background: white;
    font-weight: 500;
    color: var(--warm-gray-800);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
    outline: none;
    background: white;
}

.form-control::placeholder {
    color: var(--warm-gray-400);
    font-weight: 400;
}

.form-control-lg {
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

/* ================================
   FOOTER
   ================================ */
footer {
    background: linear-gradient(180deg, var(--warm-gray-800) 0%, var(--warm-gray-900) 100%);
    color: var(--warm-gray-200);
    padding: 60px 0 20px;
    margin-top: 80px;
    position: relative;
    overflow: hidden;
}

/* Subtle stripe in footer */
footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--stripe-pattern-reverse);
    opacity: 0.05;
    pointer-events: none;
}

footer a {
    color: var(--warm-gray-200);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

footer a:hover {
    color: var(--yellow-400);
    transform: translateX(5px);
}

footer h5 {
    color: white;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.75rem;
}

footer h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* ================================
   UTILITY CLASSES
   ================================ */
.text-primary {
    color: var(--primary-color) !important;
}

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

.bg-light {
    background-color: var(--yellow-50) !important;
}

.bg-warning {
    background-color: var(--yellow-400) !important;
}

/* Stripe backgrounds for sections */
.bg-stripe-light {
    background: white;
    position: relative;
}

.bg-stripe-light::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--stripe-pattern-subtle);
    opacity: 0.5;
    pointer-events: none;
}

.bg-stripe-yellow {
    background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
    position: relative;
}

.bg-stripe-yellow::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--stripe-pattern);
    opacity: 0.5;
    pointer-events: none;
}

/* ================================
   ANIMATIONS
   ================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in {
    animation: slideIn 0.6s ease-out;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ================================
   DROPDOWN MENUS
   ================================ */
.dropdown-menu {
    border-radius: var(--radius-lg);
    border: 2px solid var(--yellow-200);
    box-shadow: var(--shadow-xl);
    margin-top: 0.75rem;
    padding: 0.5rem;
    animation: slideDown 0.2s ease-out;
    background: white;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    padding: 0.75rem 1rem;
    transition: all 0.2s ease;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--warm-gray-700);
}

.dropdown-item:hover {
    background: var(--gradient-primary);
    color: var(--warm-gray-900) !important;
    transform: translateX(4px);
}

/* ================================
   ACCESSIBILITY & CONTRAST
   ================================ */

/* Ensure text contrast meets WCAG AA standards */
.text-muted {
    color: var(--warm-gray-600) !important;
}

/* Focus states for accessibility */
*:focus-visible {
    outline: 3px solid var(--yellow-400);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
.btn:focus-visible {
    outline: 3px solid var(--yellow-500);
    outline-offset: 3px;
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */
@media (max-width: 991px) {
    .hero {
        padding: 80px 0;
    }
    
    .hero::before {
        background: var(--stripe-pattern-subtle);
    }
    
    .navbar-brand {
        font-size: 1.5rem !important;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 767px) {
    .hero {
        padding: 60px 0;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .category-icon {
        font-size: 2.5rem;
    }
}

/* ================================
   SELECTION
   ================================ */
::selection {
    background: var(--yellow-400);
    color: var(--warm-gray-900);
}

::-moz-selection {
    background: var(--yellow-400);
    color: var(--warm-gray-900);
}

/* ================================
   SMOOTH SCROLLING
   ================================ */
html {
    scroll-behavior: smooth;
}