/* ═══════════════════════════════════════════════════
   ABAJO EN EL AGUA — style.css
   Estructura:
   1. Variables & Reset
   2. Base & Typography
   3. Layout Utilities
   4. Header & Navbar
   5. Hero
   6. Depth Card (decorativa)
   7. Destinations
   8. Footer
   9. Animations
   10. Media Queries
═══════════════════════════════════════════════════ */


/* ─── 1. VARIABLES & RESET ─── */

:root {
    /* Colores principales */
    --color-navy:        #0D2C54;
    --color-navy-dark:   #081e3a;
    --color-cyan:        #00B4D8;
    --color-cyan-light:  #90E0EF;

    /* Fondos */
    --color-bg:          #F5F7FA;
    --color-bg-alt:      #EEF2F7;
    --color-white:       #FFFFFF;

    /* Texto */
    --color-text:        #1A2B3C;
    --color-text-muted:  #6B7E93;

    /* Bordes */
    --color-border:      #D6E1ED;

    /* Estados */
    --color-ok:          #10b981;
    --color-warn:        #f59e0b;
    --color-danger:      #ef4444;

    /* Tipografía */
    --font-display:      'Syne', sans-serif;
    --font-body:         'DM Sans', sans-serif;

    /* Espaciado base */
    --space-xs:   0.25rem;
    --space-sm:   0.5rem;
    --space-md:   1rem;
    --space-lg:   1.5rem;
    --space-xl:   2rem;
    --space-2xl:  3rem;
    --space-3xl:  5rem;

    /* Radios */
    --radius-sm:  6px;
    --radius-md:  12px;
    --radius-lg:  20px;

    /* Sombras */
    --shadow-sm:  0 2px 8px rgba(13, 44, 84, 0.08);
    --shadow-md:  0 4px 24px rgba(13, 44, 84, 0.12);
    --shadow-lg:  0 8px 40px rgba(13, 44, 84, 0.16);

    /* Transiciones */
    --transition-fast:   0.15s ease;
    --transition-base:   0.25s ease;
    --transition-slow:   0.4s ease;

    /* Layout */
    --nav-height:        64px;
    --container-max:     1200px;
    --container-pad:     1.5rem;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}


/* ─── 2. BASE & TYPOGRAPHY ─── */

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--color-navy);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}


/* ─── 3. LAYOUT UTILITIES ─── */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}


/* ─── 4. HEADER & NAVBAR ─── */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    background: rgba(245, 247, 250, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--color-border);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.nav-logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.nav-logo-text {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--color-navy);
    letter-spacing: -0.01em;
    line-height: 1.1;
}

/* Menú */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-navy);
}

.nav-link--cta {
    background: var(--color-navy);
    color: var(--color-white);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-link--cta:hover {
    background: var(--color-cyan);
    color: var(--color-white);
    transform: translateY(-1px);
}

/* Hamburger (mobile) */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 4px;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-navy);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Estado abierto del menú mobile */
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ─── 5. HERO ─── */

.hero {
    min-height: 100vh;
    padding-top: var(--nav-height);
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-3xl);
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

.hero-content {
    padding-block: var(--space-3xl);
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-cyan);
    background: rgba(0, 180, 216, 0.08);
    border: 1px solid rgba(0, 180, 216, 0.25);
    border-radius: 100px;
    padding: 4px 14px;
    margin-bottom: var(--space-lg);
}

.hero-eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-cyan);
    flex-shrink: 0;
}

.hero-title {
    font-size: clamp(2.4rem, 4.5vw, 3.8rem);
    margin-bottom: var(--space-lg);
}

.hero-title--accent {
    color: var(--color-cyan);
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 460px;
    line-height: 1.75;
    margin-bottom: var(--space-xl);
}

/* ─── 6. DEPTH CARD (decorativa hero) ─── */

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.depth-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 340px;
    overflow: hidden;
}

/* Barra superior decorativa */
.depth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-navy), var(--color-cyan));
}

.depth-card__badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: var(--color-ok);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 3px 10px;
    border-radius: 100px;
}

.depth-card__label {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.depth-card__value {
    font-family: var(--font-display);
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--color-navy);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: var(--space-xl);
}

.depth-card__value span {
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--color-text-muted);
}

.depth-card__bars {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.bar-row__label {
    font-size: 0.68rem;
    color: var(--color-text-muted);
    width: 28px;
    text-align: right;
    flex-shrink: 0;
}

.bar-row__track {
    flex: 1;
    height: 6px;
    background: var(--color-bg-alt);
    border-radius: 100px;
    overflow: hidden;
}

.bar-row__fill {
    height: 100%;
    width: 0;                  /* JS anima hasta data-width% */
    border-radius: 100px;
    background: linear-gradient(90deg, var(--color-navy), var(--color-cyan));
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.bar-row__val {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--color-navy);
    width: 48px;
    flex-shrink: 0;
}


/* ─── 7. DESTINATIONS ─── */

.destinations {
    padding-block: var(--space-3xl);
    background: var(--color-white);
}

.destinations-title {
    font-size: clamp(1.6rem, 2.5vw, 2.2rem);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.destinations-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.destination-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--color-border);
    background: var(--color-bg);
    transition: box-shadow var(--transition-base),
                transform var(--transition-base),
                border-color var(--transition-base);
    position: relative;
    overflow: hidden;
}

/* Acento lateral izquierdo */
.destination-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    background: linear-gradient(180deg, var(--color-navy), var(--color-cyan));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.destination-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: var(--color-cyan);
}

.destination-card:hover::before {
    opacity: 1;
}

.destination-card__icon {
    font-size: 2.5rem;
    line-height: 1;
    flex-shrink: 0;
}

.destination-card__title {
    font-size: 1.4rem;
    margin-bottom: var(--space-sm);
}

.destination-card__desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: var(--space-md);
}

.destination-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.destination-card__tags li {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-cyan);
    background: rgba(0, 180, 216, 0.08);
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 100px;
    padding: 2px 10px;
}

.destination-card__arrow {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    transition: transform var(--transition-base), color var(--transition-fast);
    flex-shrink: 0;
}

.destination-card:hover .destination-card__arrow {
    transform: translateX(4px);
    color: var(--color-cyan);
}


/* ─── 8. FOOTER ─── */

.site-footer {
    background: var(--color-navy);
    padding-block: var(--space-2xl);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
}

.footer-brand__name {
    display: block;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.footer-brand__disclaimer {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    max-width: 400px;
    line-height: 1.5;
}

.footer-copy {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.35);
    flex-shrink: 0;
}


/* ─── 9. ANIMATIONS ─── */

/* Fade-in al hacer scroll */
.js-fade {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-fade.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Delay escalonado para grillas */
.js-fade:nth-child(2) { transition-delay: 0.1s; }
.js-fade:nth-child(3) { transition-delay: 0.2s; }
.js-fade:nth-child(4) { transition-delay: 0.3s; }


/* ─── 10. MEDIA QUERIES ─── */

/* Tablet */
@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        min-height: auto;
        padding-block: calc(var(--nav-height) + var(--space-2xl)) var(--space-2xl);
    }

    .hero-visual {
        display: none;
    }

    .destinations-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 600px) {
    :root {
        --container-pad: 1rem;
    }

    /* Navbar mobile */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        align-items: stretch;
        padding: var(--space-md);
        gap: var(--space-sm);
        box-shadow: var(--shadow-md);
    }

    .nav-menu.is-open {
        display: flex;
    }

    .nav-link {
        padding: var(--space-sm) var(--space-md);
        border-radius: var(--radius-sm);
    }

    .nav-link:hover {
        background: var(--color-bg);
    }

    .nav-link--cta {
        text-align: center;
    }

    /* Destination cards mobile */
    .destination-card {
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
    }

    .destination-card__arrow {
        display: none;
    }

    /* Footer mobile */
    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}