/* public/css/index.css */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
    /* Brand & Accent */
    --color-primary: #C41E3A;
    --color-primary-hover: #D42040;
    --color-primary-active: #A01830;
    --color-primary-disabled: #F0C0C8;

    /* Surface */
    --color-canvas: #FAF7F2;
    --color-surface-soft: #F3EFE8;
    --color-surface-strong: #EDE7DC;
    --color-surface-white: #FFFFFF;

    /* Hairlines & Borders */
    --color-hairline: #DDD8CF;
    --color-hairline-soft: #EAE6DF;
    --color-border-strong: #C5BEB2;

    /* Text */
    --color-ink: #1A1A1A;
    --color-body: #3D3A35;
    --color-muted: #6B6560;
    --color-muted-soft: #9A9590;
    --color-on-primary: #FFFFFF;
    --color-on-canvas: #1A1A1A;

    /* Semantic */
    --color-success: #2D7A4F;
    --color-warning: #B45309;
    --color-error: #B91C1C;
    --color-whatsapp: #25D366;
    
    /* Scrim */
    --color-scrim: rgba(0, 0, 0, 0.5);

    /* Border Radius */
    --rounded-xs: 4px;
    --rounded-sm: 8px;
    --rounded-md: 12px;
    --rounded-lg: 16px;
    --rounded-xl: 24px;
    --rounded-full: 9999px;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-section: 64px;
    --spacing-hero: 100px;

    /* Elevation */
    --shadow-card: 0 1px 0 rgba(0,0,0,0.04), 0 2px 8px rgba(0,0,0,0.06);
    --shadow-card-hover: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-modal: 0 8px 40px rgba(0,0,0,0.16);
    --shadow-float: 0 4px 12px rgba(196,30,58,0.35);
    --shadow-sticky: 0 2px 8px rgba(0,0,0,0.08);

    /* Typography Sizes */
    --text-display-xl: 36px;
    --text-display-lg: 28px;
    --text-display-md: 22px;
    --text-display-sm: 20px;
    --text-title-md: 16px;
    --text-title-sm: 16px;
    --text-body-md: 16px;
    --text-body-sm: 14px;
    --text-caption: 14px;
    --text-caption-sm: 13px;
    --text-badge: 11px;
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, system-ui, "Helvetica Neue", sans-serif;
    background-color: var(--color-canvas);
    color: var(--color-ink);
    line-height: 1.625;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: inherit;
}

ul { list-style: none; }

/* Typography Classes */
.display-xl { font-size: var(--text-display-xl); font-weight: 700; line-height: 1.25; letter-spacing: -0.5px; }
.display-lg { font-size: var(--text-display-lg); font-weight: 700; line-height: 1.30; letter-spacing: -0.3px; }
.display-md { font-size: var(--text-display-md); font-weight: 600; line-height: 1.36; letter-spacing: -0.2px; }
.display-sm { font-size: var(--text-display-sm); font-weight: 600; line-height: 1.40; }
.title-md { font-size: var(--text-title-md); font-weight: 600; line-height: 1.50; }
.body-md { font-size: var(--text-body-md); font-weight: 400; line-height: 1.625; color: var(--color-body); }
.body-sm { font-size: var(--text-body-sm); font-weight: 400; line-height: 1.43; color: var(--color-muted); }
.text-primary { color: var(--color-primary); }

/* Container Grid */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}
@media (min-width: 744px) {
    .container { padding: 0 var(--spacing-lg); }
}
@media (min-width: 1128px) {
    .container { padding: 0 48px; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--rounded-sm);
    font-family: inherit;
    font-weight: 600;
    font-size: var(--text-title-md);
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    height: 48px;
    padding: 0 20px;
}
.btn-primary:hover { background-color: var(--color-primary-hover); }
.btn-primary:active { background-color: var(--color-primary-active); }
.btn-primary:disabled { background-color: var(--color-primary-disabled); cursor: not-allowed; }

.btn-secondary {
    background-color: var(--color-surface-white);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    height: 48px;
    padding: 0 20px;
}

.btn-whatsapp {
    background-color: var(--color-whatsapp);
    color: white;
    height: 48px;
    padding: 0 20px;
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    background-color: var(--color-primary);
    border-radius: var(--rounded-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-float);
    z-index: 999;
    transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1);
}
.whatsapp-float:hover {
    transform: scale(1.05);
}
.whatsapp-float svg {
    width: 28px;
    height: 28px;
    fill: white;
}

/* ==================== TOP NAVIGATION ==================== */
.top-nav {
    background-color: var(--color-canvas);
    height: 72px;
    border-bottom: 1px solid var(--color-hairline);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: box-shadow 0.2s ease;
}
.top-nav.scrolled {
    box-shadow: var(--shadow-sticky);
}
.top-nav-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    font-weight: 700;
    font-size: 20px;
    color: var(--color-primary);
    flex-shrink: 0;
}
.nav-links {
    display: none;
    gap: 32px;
}
.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-muted);
    padding: 24px 0;
    border-bottom: 2px solid transparent;
}
.nav-link:hover { color: var(--color-ink); }
.nav-link.active {
    color: var(--color-ink);
    border-bottom: 2px solid var(--color-primary);
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}
.nav-cta {
    display: none;
    height: 40px;
    padding: 0 16px;
    font-size: 14px;
}

/* Hamburger button */
.mobile-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.mobile-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-ink);
    border-radius: 2px;
    transition: all 0.2s ease;
}

/* Mobile Overlay */
.mobile-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-scrim);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.mobile-overlay.open {
    opacity: 1;
    visibility: visible;
}
.mobile-sheet {
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    max-width: 85vw;
    height: 100%;
    background: var(--color-surface-white);
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1);
    overflow-y: auto;
}
.mobile-overlay.open .mobile-sheet {
    transform: translateX(0);
}
.mobile-nav-link {
    display: block;
    padding: 16px 0;
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-hairline-soft);
}
.mobile-nav-link:hover {
    color: var(--color-primary);
}

/* Desktop nav show */
@media (min-width: 744px) {
    .nav-links { display: flex; }
    .nav-cta { display: inline-flex; }
    .mobile-hamburger { display: none; }
}

/* ==================== TOUR CARDS ==================== */
.tour-card {
    background-color: var(--color-surface-white);
    border-radius: var(--rounded-md);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: box-shadow 0.2s cubic-bezier(0.2, 0, 0, 1), transform 0.2s ease;
    display: flex;
    flex-direction: column;
}
.tour-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
}
.tour-card-img {
    aspect-ratio: 4/3;
    width: 100%;
    object-fit: cover;
    position: relative;
    overflow: hidden;
}
.tour-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-surface-white);
    padding: 4px 10px;
    border-radius: var(--rounded-full);
    font-size: var(--text-badge);
    font-weight: 600;
    letter-spacing: 0.1px;
    z-index: 2;
}
.tour-badge.red {
    background: var(--color-primary);
    color: white;
}
.tour-card-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}
.price-display {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    margin-top: auto;
}

/* ==================== GRID LAYOUTS ==================== */
.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}
.grid-4 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

/* Tablet (744px+) */
@media (min-width: 744px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* Desktop (1128px+) */
@media (min-width: 1128px) {
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ==================== FOOTER ==================== */
.footer {
    background-color: var(--color-surface-strong);
    padding: 48px 0 32px 0;
    margin-top: var(--spacing-section);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}
@media (min-width: 744px) {
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
}
.footer-col-title {
    font-size: var(--text-title-sm);
    font-weight: 600;
    margin-bottom: 16px;
}
.footer-link {
    display: block;
    color: var(--color-muted);
    margin-bottom: 8px;
    font-size: var(--text-body-sm);
}
.footer-link:hover { color: var(--color-ink); }

.legal-band {
    background-color: var(--color-ink);
    color: var(--color-muted-soft);
    padding: 16px 0;
    font-size: var(--text-caption-sm);
}
.legal-band-inner {
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-align: center;
}
@media (min-width: 744px) {
    .legal-band-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* ==================== RESPONSIVE TYPOGRAPHY ==================== */
@media (max-width: 744px) {
    .display-xl { font-size: 28px; }
    .display-lg { font-size: 24px; }
    .display-md { font-size: 20px; }
    .display-sm { font-size: 18px; }
    .price-display { font-size: 18px; }
}

/* ==================== BREADCRUMB ==================== */
.breadcrumb {
    font-size: var(--text-body-sm);
    color: var(--color-muted);
    padding: 16px 0;
}
.breadcrumb a {
    color: var(--color-muted);
}
.breadcrumb a:hover {
    color: var(--color-primary);
}
.breadcrumb span {
    margin: 0 8px;
    color: var(--color-muted-soft);
}