/* Travel Calculator - Styles */

:root {
    /* Color palette - inspired by travel maps and train schedules */
    --color-bg-primary: #0f1419;
    --color-bg-secondary: #1a2332;
    --color-bg-card: #232f3e;
    --color-bg-input: #2d3a4d;
    
    --color-accent-primary: #ff6b35;
    --color-accent-secondary: #f7c948;
    --color-accent-tertiary: #4ecdc4;
    
    --color-text-primary: #f0f4f8;
    --color-text-secondary: #a8b5c4;
    --color-text-muted: #6b7a8d;
    
    --color-border: #3d4f63;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Typography */
    --font-display: 'Unbounded', sans-serif;
    --font-body: 'Onest', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(255, 107, 53, 0.3);
}

/* Reset and base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    background-image: 
        radial-gradient(ellipse at 20% 20%, rgba(255, 107, 53, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(78, 205, 196, 0.06) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

/* App container */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.header-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    font-size: 2.5rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-left: 3.5rem;
}

.exchange-rate {
    background: var(--color-bg-card);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-xs);
}

.rate-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.rate-value {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent-secondary);
}

/* Main content */
.main-content {
    flex: 1;
    position: relative;
}

/* Calculator section */
.calculator-section {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-xl);
}

.calculator-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.form-row {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-group {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.label-icon {
    font-size: 1.1rem;
}

.form-group select,
.form-group input[type="date"],
.form-group input[type="number"] {
    background: var(--color-bg-input);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    color: var(--color-text-primary);
    font-family: var(--font-body);
    transition: all 0.2s ease;
    width: 100%;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
}

.form-group select option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

/* Swap button */
.swap-button {
    background: var(--color-bg-input);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-bottom: var(--space-xs);
}

.swap-button:hover {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: white;
    transform: rotate(180deg);
}

/* Passengers input */
.passengers-input {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--color-bg-input);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.passengers-input input {
    border: none !important;
    text-align: center;
    width: 60px;
    background: transparent !important;
    padding: var(--space-md) var(--space-sm) !important;
    -moz-appearance: textfield;
}

.passengers-input input::-webkit-outer-spin-button,
.passengers-input input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.qty-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.25rem;
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* Submit button */
.submit-btn {
    background: linear-gradient(135deg, var(--color-accent-primary), #ff8c5a);
    border: none;
    border-radius: var(--radius-md);
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.1rem;
    font-weight: 600;
    font-family: var(--font-body);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-glow);
    align-self: center;
    min-width: 250px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(255, 107, 53, 0.5);
}

.submit-btn:active {
    transform: translateY(0);
}

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

.btn-icon {
    font-size: 1.2rem;
}

/* Results section */
.results-section {
    animation: slideUp 0.5s ease;
}

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

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.results-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.sort-options {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.sort-options label {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.sort-options select {
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-primary);
    font-size: 0.9rem;
}

/* Route cards */
.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.route-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: all 0.3s ease;
}

.route-card:hover {
    border-color: var(--color-accent-tertiary);
    box-shadow: var(--shadow-md);
}

.route-card.best-price {
    border-color: var(--color-success);
    position: relative;
}

.route-card.best-price::before {
    content: '💰 Лучшая цена';
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--color-success);
    color: white;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
}

.route-card-header {
    background: var(--color-bg-secondary);
    padding: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.route-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent-tertiary);
}

.route-summary {
    display: flex;
    gap: var(--space-xl);
}

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

.price-per-person {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent-secondary);
}

.price-budget {
    font-size: 0.75rem;
    color: var(--color-success);
    font-weight: 500;
    margin-top: 2px;
}

.price-total {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.route-duration {
    text-align: right;
    background: var(--color-bg-input);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    min-width: 140px;
}

.duration-value {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent-tertiary);
    white-space: nowrap;
}

.duration-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

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

.route-segments {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.segment {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    position: relative;
}

.segment:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 30px;
    bottom: -12px;
    width: 2px;
    height: 12px;
    background: var(--color-border);
}

.segment-icon {
    font-size: 1.5rem;
    width: 40px;
    text-align: center;
}

.segment-details {
    flex: 1;
}

.segment-route {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.segment-info {
    display: flex;
    gap: var(--space-lg);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.segment-carrier {
    color: var(--color-accent-tertiary);
}

.segment-price-container {
    text-align: right;
    min-width: 80px;
}

.segment-price {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-accent-secondary);
}

.segment-price-budget {
    font-size: 0.7rem;
    color: var(--color-success);
    margin-top: 2px;
    line-height: 1.3;
}

.segment-price-budget .budget-carrier {
    opacity: 0.8;
    font-size: 0.65rem;
}

/* Edit button for segments */
.segment-edit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.2s ease;
    flex-shrink: 0;
    margin-left: var(--space-sm);
}

.segment-edit-btn:hover {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    transform: scale(1.1);
    box-shadow: 0 0 12px rgba(255, 107, 53, 0.4);
}

.segment-edit-btn .edit-icon {
    font-size: 0.9rem;
    transition: transform 0.2s ease;
}

.segment-edit-btn:hover .edit-icon {
    transform: rotate(-15deg);
}

/* No results */
.no-results {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-text-muted);
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 20, 25, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

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

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-lg);
}

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

.loading-spinner p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

/* Footer */
.footer {
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.disclaimer {
    margin-top: var(--space-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    opacity: 0.7;
}

/* Group discount badge */
.group-discount {
    background: linear-gradient(135deg, var(--color-success), #34d399);
    color: white;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    margin-left: var(--space-sm);
}

/* Responsive design */
@media (max-width: 768px) {
    .app-container {
        padding: var(--space-md);
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .exchange-rate {
        align-items: flex-start;
        width: 100%;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .tagline {
        margin-left: 0;
    }
    
    .calculator-section {
        padding: var(--space-lg);
    }
    
    .form-row {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .form-group {
        min-width: 100%;
    }
    
    .swap-button {
        align-self: center;
        transform: rotate(90deg);
    }
    
    .swap-button:hover {
        transform: rotate(270deg);
    }
    
    .submit-btn {
        width: 100%;
    }
    
    .route-card-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .route-summary {
        width: 100%;
        justify-content: space-between;
    }
    
    .segment {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    
    .segment-price {
        text-align: left;
        margin-top: var(--space-sm);
    }
}

/* Animations for route cards */
.route-card {
    animation: fadeIn 0.3s ease forwards;
    opacity: 0;
}

.route-card:nth-child(1) { animation-delay: 0.1s; }
.route-card:nth-child(2) { animation-delay: 0.2s; }
.route-card:nth-child(3) { animation-delay: 0.3s; }
.route-card:nth-child(4) { animation-delay: 0.4s; }
.route-card:nth-child(5) { animation-delay: 0.5s; }

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

/* Time breakdown styles */
.segment-time-breakdown {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    font-size: 0.8rem;
}

.time-part {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
}

.time-part.travel {
    color: var(--color-text-primary);
    border-left: 2px solid var(--color-accent-tertiary);
}

.time-part.border {
    color: var(--color-warning);
    background: rgba(245, 158, 11, 0.15);
    border-left: 2px solid var(--color-warning);
}

.time-part.transfer {
    color: var(--color-accent-secondary);
    border-left: 2px solid var(--color-accent-secondary);
}

.time-part.waiting {
    color: var(--color-text-muted);
    border-left: 2px solid var(--color-text-muted);
}

/* Route time summary */
.route-time-summary {
    margin-top: var(--space-lg);
    padding: var(--space-md);
    background: linear-gradient(135deg, rgba(78, 205, 196, 0.1), rgba(247, 201, 72, 0.1));
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.time-summary-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.time-summary-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.breakdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.85rem;
    color: var(--color-text-primary);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-input);
    border-radius: var(--radius-sm);
}

.breakdown-item.warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-warning);
    font-weight: 500;
}

.breakdown-icon {
    font-size: 1rem;
}

/* Responsive time breakdown */
@media (max-width: 768px) {
    .segment-time-breakdown {
        flex-direction: column;
    }
    
    .time-summary-items {
        flex-direction: column;
        gap: var(--space-sm);
    }
}

/* =============================================
   Ad Container Styles
   ============================================= */

.ad-container {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin: var(--space-lg) 0;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.ad-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.03) 0%, rgba(78, 205, 196, 0.03) 100%);
    pointer-events: none;
}

.ad-label {
    position: absolute;
    top: var(--space-xs);
    right: var(--space-sm);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
    background: var(--color-bg-input);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    z-index: 1;
}

.ad-content {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 90px;
}

/* Banner ad (between form and results) */
.ad-banner {
    margin-top: var(--space-xl);
}

.ad-banner .ad-content {
    min-height: 90px;
}

/* In-feed ad (between results) */
.ad-in-feed {
    margin: var(--space-md) 0;
    animation: fadeIn 0.3s ease forwards;
}

.ad-in-feed .ad-content {
    min-height: 120px;
}

/* Footer ad */
.ad-footer {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.ad-footer .ad-content {
    min-height: 90px;
}

/* Placeholder ad styles (shown when IDs not configured) */
.ad-placeholder {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-md);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.08), rgba(247, 201, 72, 0.08));
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    width: 100%;
    max-width: 728px;
}

.ad-placeholder-icon {
    font-size: 2rem;
    opacity: 0.7;
}

.ad-placeholder-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.ad-placeholder-text strong {
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

.ad-placeholder-text span {
    color: var(--color-text-secondary);
    font-size: 0.8rem;
}

.ad-placeholder-hint {
    color: var(--color-text-muted) !important;
    font-size: 0.7rem !important;
    font-family: monospace;
    background: var(--color-bg-input);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    margin-top: var(--space-xs);
}

/* Responsive ad styles */
@media (max-width: 768px) {
    .ad-container {
        margin: var(--space-md) 0;
        padding: var(--space-sm);
    }
    
    .ad-placeholder {
        flex-direction: column;
        text-align: center;
        gap: var(--space-sm);
    }
    
    .ad-placeholder-icon {
        font-size: 1.5rem;
    }
    
    .ad-content {
        min-height: 70px;
    }
}

/* Hide ads on print */
@media print {
    .ad-container {
        display: none !important;
    }
}