/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Retro Futurismo */
    --primary-color: #2196F3;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
    --purple-color: #9C27B0;
    
    /* Additional Colors */
    --dark-bg: #121212;
    --dark-card: #1e1e1e;
    --dark-text: #ffffff;
    --light-bg: #ffffff;
    --light-card: #f8f9fa;
    --light-text: #333333;
    
    /* Retro Futurismo Typography */
    --font-primary: 'Arial', 'Helvetica', sans-serif;
    --font-secondary: 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 3rem;
    
    /* Shadows */
    --shadow-light: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-heavy: 0 8px 16px rgba(0,0,0,0.2);
    
    /* Border Radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;
}



 html, body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}



/* Body and Typography */
body {
    overflow-x: hidden;
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--light-text);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    transition: all 0.3s ease;
}

/* Dark Mode */
[data-theme="dark"] {
    --light-bg: var(--dark-bg);
    --light-card: var(--dark-card);
    --light-text: var(--dark-text);
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    color: var(--dark-text);
}

[data-theme="dark"] .bg-light {
    background-color: var(--dark-card) !important;
}

[data-theme="dark"] .card {
    background-color: var(--dark-card);
    border-color: #333;
    color: var(--dark-text);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--dark-card);
    border-color: #333;
    color: var(--dark-text);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: var(--dark-card);
    border-color: var(--primary-color);
    color: var(--dark-text);
    box-shadow: 0 0 0 0.2rem rgba(33, 150, 243, 0.25);
}

/* Navigation */
.navbar {
    backdrop-filter: blur(10px);
    background: rgba(33, 150, 243, 0.9) !important;
    box-shadow: var(--shadow-medium);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: var(--shadow-heavy);
}

.hero-section h1 {
    text-shadow: 0 4px 8px rgba(0,0,0,0.3);
    background: linear-gradient(45deg, var(--primary-color), var(--purple-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.card-header {
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
    border-bottom: none;
    padding: var(--spacing-lg);
}

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

/* Destination Cards */
.destination-card {
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.destination-card::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;
}

.destination-card:hover::before {
    left: 100%;
}

.destination-flag {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.destination-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), #1976D2);
    border: none;
    box-shadow: 0 4px 8px rgba(33, 150, 243, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(33, 150, 243, 0.4);
}

.btn-success {
    background: linear-gradient(45deg, var(--success-color), #388E3C);
    border: none;
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.3);
}

.btn-warning {
    background: linear-gradient(45deg, var(--warning-color), #F57C00);
    border: none;
    color: #333;
    box-shadow: 0 4px 8px rgba(255, 193, 7, 0.3);
}

.btn-danger {
    background: linear-gradient(45deg, var(--danger-color), #D32F2F);
    border: none;
    box-shadow: 0 4px 8px rgba(244, 67, 54, 0.3);
}

/* Forms */
.form-control,
.form-select {
    border-radius: var(--border-radius);
    border: 2px solid #e0e0e0;
    padding: var(--spacing-md);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(5px);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(33, 150, 243, 0.25);
    transform: translateY(-2px);
}

.form-label {
    font-weight: 600;
    color: var(--light-text);
    margin-bottom: var(--spacing-sm);
}

/* Accordion */
.accordion-item {
    border: none;
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius) !important;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.accordion-button {
    background: linear-gradient(45deg, rgba(33, 150, 243, 0.1), rgba(156, 39, 176, 0.1));
    border: none;
    font-weight: 600;
    color: var(--light-text);
}

.accordion-button:not(.collapsed) {
    background: linear-gradient(45deg, var(--primary-color), var(--purple-color));
    color: white;
    box-shadow: none;
}

.accordion-body {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
}

/* Modals */
.modal-content {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-heavy);
    backdrop-filter: blur(20px);
    background: rgba(255,255,255,0.95);
}

.modal-header {
    border-bottom: none;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.modal-footer {
    border-top: none;
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

/* Offcanvas */
.offcanvas {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border: none;
}

[data-theme="dark"] .offcanvas {
    background: rgba(30,30,30,0.95);
}

.offcanvas-header {
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

[data-theme="dark"] .offcanvas-header {
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* Navigation Links */
.nav-link {
    color: var(--light-text);
    font-weight: 500;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    margin-bottom: var(--spacing-xs);
}

.nav-link:hover,
.nav-link.active {
    background: linear-gradient(45deg, var(--primary-color), var(--purple-color));
    color: white;
    transform: translateX(5px);
}

/* Progress Bar */
.progress {
    height: 8px;
    border-radius: 4px;
    background: rgba(0,0,0,0.1);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(45deg, var(--success-color), #66BB6A);
    transition: width 0.3s ease;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.alert-info {
    background: rgba(33, 150, 243, 0.1);
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    color: #F57C00;
    border-left: 4px solid var(--warning-color);
}

.alert-danger {
    background: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

/* Badges */
.badge {
    font-size: 0.8rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-weight: 600;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* Pulse Animation */
.pulse {
    animation: pulse 2s infinite;
}

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

/* Fade In Animation */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

/* Slide In Animation */
.slide-in {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* Cost Chart Container */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Glossary Terms */
.glossary-terms {
    max-height: 200px;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.glossary-terms::-webkit-scrollbar {
    width: 4px;
}

.glossary-terms::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1);
    border-radius: 2px;
}

.glossary-terms::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 2px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: var(--spacing-lg) !important;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .btn-lg {
        font-size: 1rem;
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .modal-dialog {
        margin: var(--spacing-md);
    }
    
    .destination-card {
        margin-bottom: var(--spacing-lg);
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
    
    .hero-section h1 {
        font-size: 1.5rem;
    }
    
    .hero-section .lead {
        font-size: 1rem;
    }
    
    .btn-lg {
        width: 100%;
        margin-bottom: var(--spacing-md);
    }
    
    .card-header {
        padding: var(--spacing-md);
    }
    
    .modal-lg {
        max-width: 95%;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .offcanvas,
    .modal,
    .btn,
    footer {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --shadow-light: 0 2px 4px rgba(0,0,0,0.5);
        --shadow-medium: 0 4px 8px rgba(0,0,0,0.6);
        --shadow-heavy: 0 8px 16px rgba(0,0,0,0.7);
    }
    
    .card {
        border: 2px solid #000;
    }
    
    .btn {
        border: 2px solid;
    }
}

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

/* Focus Indicators */
.btn:focus,
.form-control:focus,
.form-select:focus,
.nav-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1);
}

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

::-webkit-scrollbar-thumb:hover {
    background: #1976D2;
}

/* Section Transitions */
.section-content {
    animation: fadeIn 0.5s ease-in;
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(45deg, var(--primary-color), var(--purple-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--purple-color));
}

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

.border-gradient {
    border: 2px solid;
    border-image: linear-gradient(45deg, var(--primary-color), var(--purple-color)) 1;
}

/* Hover Effects */
.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(33, 150, 243, 0.5);
}

/* Loading States */
.btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-left: 8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Error States */
.error-state {
    color: var(--danger-color);
    border-color: var(--danger-color) !important;
}

.error-message {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* Success States */
.success-state {
    color: var(--success-color);
    border-color: var(--success-color) !important;
}

.success-message {
    color: var(--success-color);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}