/**
 * 한국미래사업학교 강연장 대관 - Responsive Stylesheet
 * Mobile-first responsive design
 */

/* ========================================
   Extra Large Screens (1400px+)
======================================== */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }

    .hero-title {
        font-size: 72px;
    }

    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   Large Screens (1200px - 1399px)
======================================== */
@media (max-width: 1399px) {
    .container {
        max-width: 1200px;
    }

    .footer-grid {
        grid-template-columns: 1.5fr repeat(3, 1fr);
        gap: var(--spacing-2xl);
    }
}

/* ========================================
   Medium-Large Screens (992px - 1199px)
======================================== */
@media (max-width: 1199px) {
    :root {
        --font-size-5xl: 42px;
        --font-size-4xl: 32px;
    }

    .container {
        max-width: 960px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2xl);
    }

    .footer-brand {
        grid-column: span 2;
        max-width: none;
    }
}

/* ========================================
   Tablet (768px - 991px)
======================================== */
@media (max-width: 991px) {
    :root {
        --font-size-5xl: 36px;
        --font-size-4xl: 28px;
        --font-size-3xl: 24px;
        --spacing-4xl: 64px;
        --spacing-3xl: 48px;
    }

    .container {
        max-width: 720px;
        padding: 0 var(--spacing-md);
    }

    /* Header */
    .header-inner {
        height: 64px;
    }

    .main-nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* Hero */
    .hero-section {
        min-height: 90vh;
        padding-top: 100px;
    }

    .hero-content {
        padding: 0 var(--spacing-md);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }

    .hero-cta-group {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta-group .btn {
        width: 100%;
        max-width: 320px;
    }

    /* Features */
    .features-grid {
        gap: var(--spacing-lg);
    }

    .feature-card {
        padding: var(--spacing-xl);
    }

    /* Info Cards */
    .info-grid {
        gap: var(--spacing-lg);
    }

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

    /* Gallery */
    .gallery-grid {
        gap: var(--spacing-md);
    }

    /* Pricing */
    .pricing-body {
        padding: var(--spacing-lg);
    }

    /* Parking Table */
    .parking-table th,
    .parking-table td {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    /* FAQ */
    .faq-question {
        padding: var(--spacing-md);
    }

    .faq-answer-content {
        padding: 0 var(--spacing-md) var(--spacing-md);
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-brand {
        grid-column: auto;
        text-align: center;
        max-width: none;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-column {
        text-align: center;
    }

    .footer-links {
        align-items: center;
    }

    .footer-contact-item {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* ========================================
   Small Tablet / Large Phone (576px - 767px)
======================================== */
@media (max-width: 767px) {
    :root {
        --font-size-5xl: 32px;
        --font-size-4xl: 26px;
        --font-size-3xl: 22px;
        --font-size-2xl: 20px;
        --spacing-4xl: 48px;
        --spacing-3xl: 32px;
        --spacing-2xl: 24px;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    /* Header */
    .header-inner {
        height: 60px;
        padding: 0 var(--spacing-md);
    }

    .logo-text .main {
        font-size: var(--font-size-base);
    }

    .logo-text .sub {
        display: none;
    }

    /* Hero */
    .hero-section {
        min-height: 85vh;
    }

    .hero-badge {
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .hero-badge-text {
        font-size: var(--font-size-xs);
        letter-spacing: 1px;
    }

    .hero-title {
        font-size: clamp(28px, 7vw, 36px);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .scroll-indicator {
        bottom: var(--spacing-lg);
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
    }

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

    .feature-icon {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }

    /* Info Cards */
    .info-grid {
        grid-template-columns: 1fr;
    }

    /* Gallery */
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .gallery-item {
        aspect-ratio: 16/9;
    }

    /* Pricing */
    .pricing-header {
        padding: var(--spacing-lg);
    }

    .pricing-body {
        padding: var(--spacing-md);
    }

    .pricing-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .pricing-value {
        font-size: var(--font-size-base);
    }

    /* Parking Table - Card Layout */
    .parking-table {
        display: block;
    }

    .parking-table thead {
        display: none;
    }

    .parking-table tbody {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .parking-table tr {
        display: flex;
        flex-direction: column;
        background: white;
        border-radius: var(--radius-lg);
        padding: var(--spacing-md);
        box-shadow: 0 2px 10px var(--shadow-soft);
    }

    .parking-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--border-light);
    }

    .parking-table td:last-child {
        border-bottom: none;
    }

    .parking-table td::before {
        content: attr(data-label);
        font-weight: var(--font-weight-semibold);
        color: var(--text-muted);
        font-size: var(--font-size-xs);
    }

    /* Time Slots */
    .time-slots {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Floating Booking Bar */
    .floating-booking-bar {
        display: block;
        padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom));
    }

    body.has-floating-bar {
        padding-bottom: 80px;
    }

    /* Booking Modal */
    .booking-modal-content {
        max-height: 85vh;
        border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    }
}

/* ========================================
   Mobile (Up to 575px)
======================================== */
@media (max-width: 575px) {
    :root {
        --font-size-5xl: 28px;
        --font-size-4xl: 24px;
        --font-size-3xl: 20px;
        --font-size-2xl: 18px;
        --font-size-xl: 16px;
        --spacing-4xl: 40px;
        --spacing-3xl: 28px;
        --spacing-2xl: 20px;
        --spacing-xl: 16px;
    }

    body {
        font-size: 15px;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    /* Header */
    .header-inner {
        height: 56px;
    }

    .logo img {
        height: 32px;
    }

    /* Hero */
    .hero-section {
        min-height: 80vh;
        padding-top: 80px;
    }

    .hero-badge {
        margin-bottom: var(--spacing-lg);
    }

    .hero-title {
        font-size: clamp(24px, 8vw, 32px);
        margin-bottom: var(--spacing-lg);
    }

    .hero-subtitle {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xl);
    }

    .hero-cta-group .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    /* Section Headers */
    .section-header {
        margin-bottom: var(--spacing-xl);
    }

    .section-badge {
        font-size: 10px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .section-subtitle {
        font-size: var(--font-size-sm);
    }

    /* Feature Cards */
    .feature-card {
        padding: var(--spacing-md);
    }

    .feature-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
        margin-bottom: var(--spacing-md);
    }

    .feature-card h3 {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-sm);
    }

    .feature-card p {
        font-size: var(--font-size-sm);
    }

    /* Info Cards */
    .info-card {
        padding: var(--spacing-md);
    }

    .info-card-icon {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .info-card-title {
        font-size: var(--font-size-lg);
    }

    .info-list-item {
        padding: var(--spacing-sm) 0;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    /* Gallery */
    .gallery-item {
        border-radius: var(--radius-lg);
    }

    .gallery-overlay {
        padding: var(--spacing-md);
    }

    /* FAQ */
    .faq-question {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .faq-icon {
        width: 28px;
        height: 28px;
        font-size: var(--font-size-xs);
    }

    .faq-answer-content {
        font-size: var(--font-size-sm);
    }

    /* Buttons */
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    .btn-lg {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-base);
    }

    /* Date Picker */
    .date-picker-grid {
        gap: 2px;
    }

    .date-cell {
        font-size: var(--font-size-xs);
    }

    /* Time Slots */
    .time-slots {
        grid-template-columns: repeat(2, 1fr);
    }

    .time-slot {
        padding: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    /* Form */
    .form-input {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    /* Footer */
    .footer-logo img {
        height: 32px;
    }

    .footer-logo-text {
        font-size: var(--font-size-lg);
    }

    .footer-column h4 {
        font-size: var(--font-size-sm);
    }

    .footer-links a {
        font-size: var(--font-size-xs);
    }

    .social-link {
        width: 36px;
        height: 36px;
    }

    /* Floating Booking Bar */
    .floating-booking-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .floating-price {
        text-align: center;
    }

    .floating-cta {
        width: 100%;
    }

    .floating-cta .btn {
        width: 100%;
    }
}

/* ========================================
   Very Small Screens (Up to 375px)
======================================== */
@media (max-width: 375px) {
    :root {
        --font-size-5xl: 24px;
        --font-size-4xl: 22px;
        --font-size-3xl: 18px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-title {
        font-size: 24px;
    }

    .feature-card {
        padding: var(--spacing-md);
    }

    .time-slots {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   Mobile Navigation Drawer
======================================== */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    visibility: hidden;
    opacity: 0;
    transition: all var(--transition-normal);
}

.mobile-nav.active {
    visibility: visible;
    opacity: 1;
}

.mobile-nav-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.mobile-nav-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 320px;
    height: 100%;
    background: white;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.mobile-nav.active .mobile-nav-content {
    transform: translateX(0);
}

.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
}

.mobile-nav-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    border-radius: var(--radius-full);
}

.mobile-nav-menu {
    padding: var(--spacing-md);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--color-light-bg);
    color: var(--color-accent-blue);
}

.mobile-nav-submenu {
    padding-left: var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.mobile-nav-item.open .mobile-nav-submenu {
    max-height: 500px;
}

.mobile-nav-sublink {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-sublink:hover {
    background: var(--color-light-bg);
    color: var(--color-accent-blue);
}

.mobile-nav-cta {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
}

.mobile-nav-cta .btn {
    width: 100%;
}

/* ========================================
   Touch Device Optimizations
======================================== */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets */
    .btn {
        min-height: 44px;
    }

    .nav-link,
    .mobile-nav-link {
        min-height: 44px;
    }

    .faq-question {
        min-height: 48px;
    }

    /* Remove hover effects */
    .feature-card:hover {
        transform: none;
    }

    .gallery-item:hover img {
        transform: none;
    }

    .gallery-overlay {
        opacity: 1;
        background: linear-gradient(
            180deg,
            transparent 50%,
            rgba(0, 35, 102, 0.8) 100%
        );
    }

    /* Active states for touch */
    .btn:active {
        transform: scale(0.98);
    }

    .feature-card:active {
        transform: scale(0.98);
    }
}

/* ========================================
   High DPI / Retina Screens
======================================== */
@media (-webkit-min-device-pixel-ratio: 2),
       (min-resolution: 192dpi) {
    /* Use higher resolution images */
    .logo img {
        image-rendering: -webkit-optimize-contrast;
    }
}

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

    html {
        scroll-behavior: auto;
    }

    .scroll-wheel {
        animation: none;
    }

    [data-animate] {
        opacity: 1;
    }
}

/* ========================================
   Dark Mode (System Preference)
======================================== */
@media (prefers-color-scheme: dark) {
    /* Optional: Add dark mode styles if needed */
}

/* ========================================
   Landscape Mobile
======================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero-section {
        min-height: auto;
        padding: var(--spacing-3xl) 0;
    }

    .scroll-indicator {
        display: none;
    }

    .hero-title {
        font-size: clamp(24px, 5vw, 36px);
    }

    .hero-subtitle {
        display: none;
    }

    .hero-cta-group {
        flex-direction: row;
    }
}

/* ========================================
   Safe Area Insets (Notch Devices)
======================================== */
@supports (padding: max(0px)) {
    .site-header {
        padding-top: max(0px, env(safe-area-inset-top));
    }

    .floating-booking-bar {
        padding-bottom: max(var(--spacing-md), env(safe-area-inset-bottom));
    }

    .mobile-nav-content {
        padding-top: max(var(--spacing-lg), env(safe-area-inset-top));
    }
}

/* ========================================
   Print Optimizations
======================================== */
@media print {
    .site-header,
    .mobile-menu-toggle,
    .floating-booking-bar,
    .mobile-nav,
    .booking-modal,
    .scroll-indicator {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: black;
        background: white;
    }

    .hero-section {
        min-height: auto;
        padding: 20pt;
        background: none;
        color: black;
    }

    .hero-title {
        font-size: 24pt;
        color: black;
    }

    .section {
        padding: 20pt 0;
        page-break-inside: avoid;
    }

    .feature-card,
    .info-card,
    .faq-item {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }

    a {
        color: black;
        text-decoration: underline;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 10pt;
        color: #666;
    }
}