/* ===== Custom Properties ===== */
:root {
    /* Typography */
    --font-heading: 'DM Serif Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Colors */
    --color-deep: #1b3a4b;
    --color-ink: #2b2b2b;
    --color-ink-secondary: #5a6872;
    --color-accent: #c9a84c;
    --color-accent-light: #e8d59a;
    --color-surface: #ffffff;
    --color-surface-warm: #f8f6f1;
    --color-surface-cool: #f0f4f7;
    --color-border: #dde2e6;
    --color-mist: #ecf0f1;

    /* Shadows */
    --shadow-soft: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
    --shadow-lift: 0 4px 16px rgba(0, 0, 0, 0.08), 0 12px 32px rgba(0, 0, 0, 0.06);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    --space-2xl: 8rem;

    /* Transitions */
    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* Layout */
    --container-max: 1140px;
    --container-padding: 5%;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.75;
    color: var(--color-ink);
    background-color: var(--color-surface-warm);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 400;
    color: var(--color-deep);
    line-height: 1.2;
    text-wrap: balance;
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
}

h3 {
    font-size: clamp(1.2rem, 2.5vw, 1.4rem);
}

p {
    margin: 0 0 var(--space-sm);
    text-wrap: pretty;
}

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

/* ===== Navigation ===== */
.navbar {
    background-color: var(--color-deep);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: box-shadow 0.3s var(--ease-out);
}

.navbar--scrolled {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-block: 0.75rem;
}

.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    line-height: 1.15;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    color: var(--color-surface);
}

.logo-sub {
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-accent-light);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: var(--space-md);
}

.nav-links a {
    color: var(--color-mist);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    padding-block: 0.25rem;
    position: relative;
    transition: color 0.3s var(--ease-out);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.3s var(--ease-out);
}

.nav-links a:hover {
    color: var(--color-surface);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-surface);
    border-radius: 2px;
    transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #0f2d3a;
    background-image: url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1600&q=80');
    background-position: center 40%;
    background-size: cover;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(15, 45, 58, 0.55) 0%,
        rgba(15, 45, 58, 0.7) 60%,
        rgba(15, 45, 58, 0.85) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding-block: var(--space-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.hero-eyebrow {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin: 0;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 7vw, 4.5rem);
    color: #ffffff;
    line-height: 1.08;
    max-width: 14ch;
    margin: 0;
}

.hero-sub {
    font-size: 1.1rem;
    max-width: 520px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    margin: 0;
}

.btn-primary {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-deep);
    padding: 0.9rem 2.2rem;
    border-radius: 4px;
    text-decoration: none;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.03em;
    transition: background-color 0.3s var(--ease-out), transform 0.2s var(--ease-out);
}

.btn-primary:hover {
    background-color: var(--color-accent-light);
    transform: translateY(-1px);
}

/* ===== Sections ===== */
.section {
    padding-block: var(--space-2xl);
}

/* About */
.section-about {
    background-color: var(--color-surface);
}

.section-about h2 {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.about-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    max-width: 900px;
    margin-inline: auto;
}

.about-columns p {
    font-size: 1.05rem;
    color: var(--color-ink-secondary);
    line-height: 1.85;
    margin: 0;
}

/* Attractions */
.section-attractions {
    background-color: var(--color-surface-cool);
}

.section-attractions h2 {
    text-align: center;
    margin-bottom: var(--space-xs);
}

.section-lede {
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    text-align: center;
    color: var(--color-ink-secondary);
    font-size: 1.05rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.card {
    background-color: var(--color-surface);
    border-radius: 8px;
    padding: var(--space-lg) var(--space-md);
    text-align: left;
    border: 1px solid var(--color-border);
    transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lift);
    border-color: var(--color-accent);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    color: var(--color-accent);
}

.card h3 {
    margin-bottom: var(--space-xs);
}

.card p {
    font-size: 0.92rem;
    color: var(--color-ink-secondary);
    margin-bottom: var(--space-sm);
}

.card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.card li {
    font-size: 0.88rem;
    color: var(--color-ink-secondary);
    padding-left: 1.2rem;
    position: relative;
    margin-bottom: 0.35rem;
}

.card li::before {
    content: '\2014';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: 0.75rem;
}

/* River */
.section-river {
    background-color: var(--color-deep);
    color: var(--color-surface);
}

.section-river h2 {
    color: var(--color-surface);
    text-align: center;
    margin-bottom: var(--space-xs);
}

.section-river .section-lede {
    color: rgba(255, 255, 255, 0.7);
}

.river-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.river-feature strong {
    display: block;
    font-family: var(--font-heading);
    font-weight: 400;
    font-size: 1.25rem;
    color: var(--color-accent-light);
    margin-bottom: var(--space-xs);
}

.river-feature p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.75;
    margin: 0;
}

/* Visit */
.section-visit {
    background-color: var(--color-surface);
}

.section-visit h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.visit-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.visit-item h3 {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-deep);
    margin-bottom: var(--space-xs);
}

.visit-item p {
    font-size: 0.92rem;
    color: var(--color-ink-secondary);
    line-height: 1.8;
    margin: 0;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-deep);
    color: var(--color-mist);
    padding-block: var(--space-lg);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
}

.footer-name {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    margin: 0;
}

.footer-tagline {
    font-size: 0.8rem;
    color: var(--color-accent-light);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin: 0;
}

.footer-nav {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s var(--ease-out);
}

.footer-nav a:hover {
    color: var(--color-surface);
}

.footer-copy {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    margin: 0;
}

/* ===== Scroll Reveal ===== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.card.reveal:nth-child(2) {
    transition-delay: 0.1s;
}

.card.reveal:nth-child(3) {
    transition-delay: 0.2s;
}

.river-feature.reveal:nth-child(2) {
    transition-delay: 0.1s;
}

.river-feature.reveal:nth-child(3) {
    transition-delay: 0.2s;
}

.visit-item.reveal:nth-child(2) {
    transition-delay: 0.1s;
}

.visit-item.reveal:nth-child(3) {
    transition-delay: 0.2s;
}

/* ===== Responsive ===== */

/* Tablet */
@media (max-width: 900px) {
    .about-columns {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .card-grid,
    .river-features,
    .visit-grid {
        grid-template-columns: 1fr 1fr;
    }

    .section {
        padding-block: var(--space-xl);
    }
}

/* Large phone */
@media (max-width: 700px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        padding-block: var(--space-sm);
        gap: 0;
    }

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

    .nav-links a {
        display: block;
        padding: 0.75rem 0;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-links a::after {
        display: none;
    }

    .nav-inner {
        flex-wrap: wrap;
    }

    .card-grid,
    .river-features,
    .visit-grid {
        grid-template-columns: 1fr;
    }
}

/* Small phone */
@media (max-width: 480px) {
    .hero {
        min-height: 70vh;
    }

    .hero-content h1 {
        font-size: clamp(2rem, 10vw, 2.8rem);
    }

    .section {
        padding-block: var(--space-lg);
    }

    .footer-nav {
        flex-direction: column;
        gap: var(--space-xs);
    }
}

/* 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;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}