/* Professional CSS for Seabird Shuttle Website */

/* Import Professional Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Source+Sans+Pro:wght@300;400;600;700&display=swap');

/* CSS Custom Properties - Professional Palette */
:root {
    /* Core Brand Colors */
    --primary-orange: #ff6b35;
    --primary-orange-light: #ff8c5a;
    --primary-orange-dark: #e55a2b;
    --primary-orange-subtle: #fff8f5;
    
    /* Professional Greys */
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    
    /* Pure Colors */
    --white: #ffffff;
    --black: #000000;
    --black-soft: #1a1a1a;
    
    /* Semantic Colors */
    --success: #16a34a;
    --error: #dc2626;
    --warning: #ca8a04;
    --info: #2563eb;
    
    /* Professional Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.2s ease-in-out;
    --transition-slow: 0.3s ease-in-out;
    
    /* Typography Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
}

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

*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Professional Header */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--transition-normal);
}

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

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg) 0;
    position: relative;
}

.nav-brand h1 {
    color: var(--primary-orange);
    font-size: var(--text-2xl);
    font-weight: 700;
    font-family: 'Source Sans Pro', sans-serif;
    letter-spacing: -0.025em;
}

.nav-brand span {
    color: var(--gray-600);
    font-size: var(--text-sm);
    font-weight: 500;
    display: block;
    margin-top: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-sm);
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    font-size: var(--text-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-orange);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 80%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-orange);
    background: var(--primary-orange-subtle);
}

/* Hamburger Menu */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-sm);
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    margin: 2px 0;
    transition: all var(--transition-normal);
    border-radius: 1px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Professional Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--primary-orange);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: var(--text-sm);
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    transition: all var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 44px; /* Touch target */
}

.btn:hover {
    background: var(--primary-orange-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.btn:focus-visible {
    outline: 2px solid var(--primary-orange);
    outline-offset: 2px;
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--text-base);
    min-height: 52px;
}

.btn-secondary {
    background: var(--gray-600);
    color: var(--white);
}

.btn-secondary:hover {
    background: var(--gray-700);
}

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

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

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

.btn-danger:hover {
    background: #b91c1c;
}

.btn:disabled {
    background: var(--gray-400);
    color: var(--gray-200);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Professional Form Styles */
.form-group {
    margin-bottom: var(--space-xl);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--gray-700);
    font-size: var(--text-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-family: inherit;
    background: var(--white);
    transition: all var(--transition-normal);
    min-height: 44px; /* Touch target */
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.form-group input:invalid,
.form-group select:invalid,
.form-group textarea:invalid {
    border-color: var(--error);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Professional Checkbox and Radio Styles */
.checkbox-label,
.radio-label {
    display: flex !important;
    align-items: flex-start;
    gap: var(--space-md);
    font-weight: 500 !important;
    cursor: pointer;
    margin-bottom: var(--space-lg);
    padding: var(--space-lg);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: var(--white);
    transition: all var(--transition-normal);
}

.checkbox-label:hover,
.radio-label:hover {
    border-color: var(--gray-300);
    background: var(--gray-50);
}

.checkbox-label input,
.radio-label input {
    width: 18px !important;
    height: 18px !important;
    margin: 0;
    cursor: pointer;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Professional Booking Container */
.booking-container {
    max-width: 900px;
    margin: var(--space-2xl) auto;
    background: var(--white);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

.booking-container h1 {
    text-align: center;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
    font-size: var(--text-4xl);
    font-weight: 700;
    font-family: 'Source Sans Pro', sans-serif;
    letter-spacing: -0.025em;
}

.booking-container > p {
    text-align: center;
    margin-bottom: var(--space-2xl);
    font-size: var(--text-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Professional Form Sections */
.form-section {
    margin-bottom: var(--space-2xl);
    padding: var(--space-2xl);
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.form-section h2 {
    color: var(--gray-900);
    margin-bottom: var(--space-lg);
    font-size: var(--text-xl);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-family: 'Source Sans Pro', sans-serif;
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--gray-100);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

/* Professional Service Cards */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

.service-card:hover {
    border-color: var(--primary-orange);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.service-card.selected {
    border-color: var(--primary-orange);
    background: var(--primary-orange-subtle);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.service-checkbox {
    display: block;
    padding: var(--space-xl);
    margin: 0;
    cursor: pointer;
    position: relative;
}

.service-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.service-content {
    margin-right: var(--space-2xl);
}

.service-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.service-icon {
    font-size: var(--text-xl);
    color: var(--primary-orange);
}

.service-header h4 {
    margin: 0;
    color: var(--gray-900);
    font-size: var(--text-lg);
    font-weight: 600;
    font-family: 'Source Sans Pro', sans-serif;
}

.service-description {
    color: var(--gray-600);
    font-size: var(--text-base);
    line-height: 1.5;
    margin-bottom: var(--space-md);
}

.service-price {
    font-weight: 600;
    color: var(--success);
    font-size: var(--text-base);
    font-family: 'Source Sans Pro', sans-serif;
}

/* Professional Checkbox Indicator */
.checkbox-indicator {
    position: absolute;
    top: var(--space-xl);
    right: var(--space-xl);
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray-400);
    border-radius: var(--radius-sm);
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.service-card.selected .checkbox-indicator {
    background: var(--primary-orange);
    border-color: var(--primary-orange);
}

.checkmark {
    color: var(--white);
    font-size: var(--text-sm);
    font-weight: 700;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.service-card.selected .checkmark {
    opacity: 1;
}

/* Professional Toggle Switch */
.return-trip-toggle {
    margin-bottom: var(--space-xl);
}

.toggle-switch {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    cursor: pointer;
    padding: var(--space-lg);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.toggle-switch:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.toggle-switch input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: relative;
    width: 52px;
    height: 28px;
    background: var(--gray-300);
    border-radius: 28px;
    transition: all var(--transition-normal);
}

.toggle-slider:before {
    content: "";
    position: absolute;
    height: 20px;
    width: 20px;
    left: 4px;
    top: 4px;
    background: var(--white);
    border-radius: 50%;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--primary-orange);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.toggle-label {
    font-weight: 500;
    color: var(--gray-700);
    font-size: var(--text-base);
}

/* Professional Price Summary */
.price-summary {
    background: var(--gray-50);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-2xl);
    border: 2px solid var(--primary-orange);
    box-shadow: var(--shadow-md);
}

.price-summary h3 {
    color: var(--gray-900);
    margin-bottom: var(--space-lg);
    text-align: center;
    font-size: var(--text-xl);
    font-weight: 600;
    font-family: 'Source Sans Pro', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.price-breakdown {
    margin-bottom: var(--space-lg);
}

.price-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--gray-200);
    font-size: var(--text-base);
}

.price-line:last-child {
    border-bottom: none;
}

.price-line-label {
    color: var(--gray-700);
    font-weight: 500;
}

.price-line-value {
    color: var(--gray-900);
    font-weight: 600;
    font-family: 'Source Sans Pro', sans-serif;
}

.price-total {
    border-top: 2px solid var(--primary-orange);
    padding-top: var(--space-lg);
    margin-top: var(--space-lg);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--primary-orange);
    text-align: center;
    font-family: 'Source Sans Pro', sans-serif;
}

/* Professional Form Actions */
.form-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: var(--space-2xl);
    gap: var(--space-lg);
    flex-wrap: wrap;
}

/* Professional Footer */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--space-3xl) 0 var(--space-xl);
    margin-top: var(--space-3xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--space-lg);
    color: var(--primary-orange);
    font-weight: 600;
    font-size: var(--text-lg);
    font-family: 'Source Sans Pro', sans-serif;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-sm);
}

.footer-section a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition-normal);
    font-size: var(--text-sm);
}

.footer-section a:hover {
    color: var(--primary-orange);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
}

.footer-links {
    margin-bottom: var(--space-lg);
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color var(--transition-normal);
}

.footer-links a:hover {
    color: var(--primary-orange);
}

/* Professional Alert Styles */
.alert {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border-left: 4px solid;
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.alert-success {
    background: #f0fdf4;
    border-left-color: var(--success);
    color: #166534;
}

.alert-error {
    background: #fef2f2;
    border-left-color: var(--error);
    color: #991b1b;
}

.alert-warning {
    background: #fffbeb;
    border-left-color: var(--warning);
    color: #92400e;
}

.alert-info {
    background: #eff6ff;
    border-left-color: var(--info);
    color: #1e40af;
}

/* Subtle Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.4s ease-out;
}

/* Focus Management */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    border: 2px solid var(--gray-200);
    border-top: 2px solid var(--primary-orange);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .booking-container {
        margin: var(--space-lg);
        padding: var(--space-xl);
    }
}

@media (max-width: 768px) {
    :root {
        --text-4xl: 2rem;
        --text-3xl: 1.5rem;
        --text-2xl: 1.25rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100vw;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-xl);
        transition: left var(--transition-slow);
        z-index: 999;
        box-shadow: var(--shadow-2xl);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu a {
        font-size: var(--text-lg);
        padding: var(--space-lg) var(--space-xl);
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .booking-container {
        margin: var(--space-md);
        padding: var(--space-lg);
    }
    
    .form-section {
        padding: var(--space-lg);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .service-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .service-content {
        margin-right: var(--space-xl);
    }
    
    .checkbox-indicator {
        top: var(--space-lg);
        right: var(--space-lg);
    }
    
    .price-line {
        flex-direction: column;
        gap: var(--space-xs);
        text-align: center;
    }
    
    .form-actions {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .btn-large {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .toggle-switch {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .booking-container h1 {
        font-size: var(--text-3xl);
    }
    
    .service-header h4 {
        font-size: var(--text-base);
    }
    
    .service-description {
        font-size: var(--text-sm);
    }
    
    .price-summary {
        padding: var(--space-lg);
    }
    
    .price-total {
        font-size: var(--text-xl);
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: var(--text-base);
    }
}

/* High Contrast Support */
@media (prefers-contrast: high) {
    .service-card {
        border-width: 3px;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        border-width: 3px;
    }
}

/* 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;
    }
}

/* Print Styles */
@media print {
    .nav-toggle,
    .footer,
    .btn,
    .service-card .checkbox-indicator {
        display: none !important;
    }
    
    .booking-container {
        box-shadow: none;
        border: 1px solid var(--black);
        margin: 0;
        padding: var(--space-lg);
    }
    
    .service-card.selected {
        border: 2px solid var(--black);
        background: var(--gray-100) !important;
    }
    
    .header {
        position: static;
        box-shadow: none;
        border-bottom: 2px solid var(--black);
    }
    
    .nav-brand h1 {
        color: var(--black) !important;
    }
    
    .price-summary {
        border: 2px solid var(--black);
        background: var(--white) !important;
    }
    
    .price-total {
        color: var(--black) !important;
    }
    
    body {
        background: var(--white) !important;
        color: var(--black) !important;
    }
    
    .form-section {
        border: 1px solid var(--gray-400);
        box-shadow: none;
    }
}