/* ============================================
   CSS Variables - Nha Trang Premium Design
   ============================================ */
:root {
    /* Colors - Dark Ocean Theme */
    --bg-deep: #061826;
    --bg-dark: #0A2236;
    --bg-card: #0F2D46;
    --accent-primary: #15D5FF;
    --accent-secondary: #7DEBFF;
    --text-heading: #E6F7FF;
    --text-body: #B6D9E6;
    --text-muted: #7FB8CC;
    --white: #ffffff;

    /* Typography */
    --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-heading: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* Spacing (8px grid) */
    --space-xs: 0.5rem;
    /* 8px */
    --space-sm: 1rem;
    /* 16px */
    --space-md: 1.5rem;
    /* 24px */
    --space-lg: 2rem;
    /* 32px */
    --space-xl: 3rem;
    /* 48px */
    --space-2xl: 4rem;
    /* 64px */
    --space-3xl: 6rem;
    /* 96px */

    /* Border Radius */
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --radius-xl: 2rem;

    /* Shadows */
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(21, 213, 255, 0.2);

    /* Transitions */
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-body);
    background-color: var(--bg-deep);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

ul {
    list-style: none;
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-heading);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-body);
}

.highlight {
    color: var(--accent-primary);
}

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

.mt-lg {
    margin-top: var(--space-lg);
}

.mt-xl {
    margin-top: var(--space-xl);
}

.mb-xl {
    margin-bottom: var(--space-xl);
}

.muted {
    color: var(--text-muted);
}

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

.container--narrow {
    max-width: 800px;
}

.section-padding {
    padding: var(--space-2xl) 0;
}

.bg-dark {
    background-color: var(--bg-dark);
}

.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid--3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

@media (min-width: 768px) {
    .grid--3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.header.scrolled {
    background: rgba(6, 24, 38, 0.95);
    backdrop-filter: blur(15px);
    padding: var(--space-xs) 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header__container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform var(--transition-base);
}

.header__logo:hover {
    transform: scale(1.02);
}

.header__logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
    filter: brightness(1.1);
    transition: height 0.4s ease;
}

.header.scrolled .header__logo-img {
    height: 40px;
}

.header__nav {
    display: none;
    align-items: center;
    gap: var(--space-xl);
}

@media (min-width: 1024px) {
    .header__nav {
        display: flex;
    }
}

.header__nav-link {
    color: #ffffff;
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    opacity: 0.8;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.header__nav-link:hover,
.header__nav-link.active {
    opacity: 1;
    color: var(--accent-primary);
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.header__language {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header__language-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 0;
    background: transparent;
    border: none;
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    opacity: 0.5;
}

.header__language-btn.active {
    color: var(--accent-primary);
    opacity: 1;
}

.header__nav-icon {
    transition: transform var(--transition-base);
    opacity: 0.7;
}

.header__nav-item:hover .header__nav-icon {
    transform: rotate(180deg);
    color: var(--accent-primary);
    opacity: 1;
}

/* Submenu / Dropdown Styles */
.header__nav-item {
    position: relative;
    display: flex;
    align-items: center;
}

.header__submenu {
    position: absolute;
    top: 150%;
    left: 0 !important;
    transform: translateY(10px) !important;
    background: var(--bg-deep);
    min-width: 260px;
    padding: var(--space-sm) 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-top: 2px solid var(--accent-primary);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 100;
    margin: 0;
}

/* Invisible bridge */
.header__nav-item::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 20px;
}

.header__nav-item:hover .header__submenu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.header__submenu li {
    width: 100%;
}

.header__submenu-link {
    display: block;
    padding: 0.75rem var(--space-lg);
    color: #ffffff;
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-align: left;
}

.header__submenu-link:hover {
    background: rgba(21, 213, 255, 0.1);
    color: var(--accent-primary);
    padding-left: calc(var(--space-lg) + 8px);
}

.header__flag {
    width: 16px;
    height: 12px;
    object-fit: cover;
    border-radius: 1px;
}

.header__cart {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    color: #ffffff;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
}

.header__cart:hover {
    background: rgba(21, 213, 255, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.header__cart-count {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--accent-primary);
    color: var(--bg-deep);
    font-size: 0.625rem;
    font-weight: 800;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header__ssi-badge {
    display: none;
    align-items: center;
    transition: opacity var(--transition-base);
    padding-left: var(--space-md);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.header__ssi-badge:hover {
    opacity: 1;
}

.header__ssi-logo {
    height: 24px;
    width: auto;
    transition: all var(--transition-base);
}

.header__ssi-badge:hover .header__ssi-logo {
    filter: none;
}

@media (min-width: 1200px) {
    .header__ssi-badge {
        display: flex;
    }
}

.header__mobile-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
}

@media (min-width: 1024px) {
    .header__mobile-toggle {
        display: none;
    }
}

.header__mobile-toggle span {
    width: 24px;
    height: 2px;
    background: #ffffff;
    transition: all 0.3s ease;
}

.header__mobile-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.header__mobile-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 1023px) {
    .header {
        padding: var(--space-sm) 0;
    }

    .header__logo-img {
        height: 36px;
    }

    .header__nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--bg-deep);
        flex-direction: column;
        justify-content: center;
        padding: var(--space-2xl);
        gap: var(--space-xl);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
        z-index: 1001;
        display: flex;
    }

    .header__nav.mobile-open {
        right: 0;
    }

    .header__nav-link {
        font-size: 1.25rem;
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    .header__nav-icon {
        display: none;
    }

    .header__nav-item {
        flex-direction: column;
        width: 100%;
        gap: var(--space-xs);
    }

    .header__submenu {
        position: static;
        opacity: 0;
        visibility: hidden;
        transform: none;
        background: transparent;
        box-shadow: none;
        border: none;
        padding: 0;
        min-width: unset;
        display: none;
        flex-direction: column;
        gap: 0.5rem;
        transition: all var(--transition-base);
    }

    .header__nav-item.submenu-open .header__submenu {
        display: flex;
        opacity: 1;
        visibility: visible;
        padding: 0.5rem 0;
    }

    .header__submenu-link {
        font-size: 1rem;
        padding: 0.5rem 0;
        text-align: center;
        opacity: 0.7;
        white-space: normal;
    }

    .header__submenu-link:hover {
        padding-left: 0;
        opacity: 1;
        background: transparent;
    }

    .header__actions {
        display: none;
    }
}

body.menu-open {
    overflow: hidden;
}

/* Header Overlay */
.header__overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 7, 13, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.header__overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(6, 24, 38, 0.4) 0%, rgba(6, 24, 38, 0.8) 100%);
    z-index: 2;
}

.hero__content {
    position: relative;
    z-index: 3;
    max-width: 1000px;
}

.hero__title {
    font-size: clamp(2.2rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    line-height: 1.2;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.hero__subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    margin-bottom: var(--space-xl);
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    border-radius: 100px;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn--primary {
    background: var(--accent-primary);
    color: var(--bg-deep);
}

.btn--primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(21, 213, 255, 0.3);
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.btn--white {
    background: var(--white);
    color: var(--bg-deep);
}

.btn--white:hover {
    background: var(--accent-primary);
    transform: translateY(-3px);
}

.btn--outline-white {
    background: transparent;
    color: var(--white);
    border: 1px solid var(--white);
}

.btn--outline-white:hover {
    background: var(--white);
    color: var(--bg-deep);
    transform: translateY(-3px);
}

/* ============================================
   Introduction
   ============================================ */
.intro__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: center;
}

@media (min-width: 992px) {
    .intro__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }
}

.intro__video {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(21, 213, 255, 0.1);
}

.video-wrapper {
    padding-bottom: 150%;
    /* Slightly adjusted for a more balanced "reasonable" height */
    position: relative;
    height: 0;
    max-height: 600px;
    /* Limit height to keep it reasonable */
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.intro__content {
    text-align: left;
}

.intro__subtitle {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--accent-primary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
}

.intro__subtitle .line {
    width: 40px;
    height: 1px;
    background: var(--accent-primary);
    opacity: 0.5;
}

.intro__heading {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: var(--space-lg);
    line-height: 1.1;
    color: var(--text-heading);
    font-weight: 800;
}

.intro__text {
    font-size: 1.05rem;
    margin-bottom: var(--space-md);
    line-height: 1.7;
    color: var(--text-body);
    opacity: 0.8;
}

.intro__divider {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--space-xl) 0 var(--space-lg);
}

.intro__features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
}

.intro__feature {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.feature-icon {
    font-size: 1.25rem;
    color: var(--accent-primary);
    margin-top: 3px;
}

.feature-info {
    display: flex;
    flex-direction: column;
}

.feature-label {
    font-weight: 700;
    color: var(--text-heading);
    font-size: 1rem;
    margin-bottom: 4px;
}

.feature-val {
    font-size: 0.85rem;
    color: var(--text-muted);
}


@media (max-width: 991px) {
    .intro__content {
        text-align: center;
    }
}

/* ============================================
   Seasons
   ============================================ */
.seasons__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.season-card {
    position: relative;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid #084c5a;
    transition: var(--transition-base);
    overflow: hidden;
    min-height: 350px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.season-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(6, 24, 38, 0.2) 0%, #0618263d 100%);
    z-index: -1;
    transition: var(--transition-base);
}

.season-card:hover::before {
    background: linear-gradient(to bottom, rgba(6, 24, 38, 0.4) 0%, rgba(6, 24, 38, 0.9) 100%);
}

.season-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.season-card--dry {
    background-image: url('assets/phu-quoc-02.jpg');
}

.season-card--rainy {
    background-image: url('assets/phu-quoc-03.jpg');
}

.season-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

.season-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* ============================================
   SSI Features - Premium Redesign
   ============================================ */
.ssi-training {
    background: radial-gradient(circle at 10% 20%, rgba(21, 213, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(21, 213, 255, 0.05) 0%, transparent 40%);
}

.ssi-features__flex {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2em;
}

.ssi-features__flex .feature-item {
    flex: 0 1 calc(25% - var(--space-xl));
    min-width: 260px;
}

@media (max-width: 991px) {
    .ssi-features__flex .feature-item {
        flex: 0 1 calc(50% - var(--space-xl));
    }
}

@media (max-width: 767px) {
    .ssi-features__flex .feature-item {
        flex: 1 1 100%;
    }
}

.feature-item {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    border: 1px solid rgba(21, 213, 255, 0.2);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    /* Removed height: 100% to work better with flex */
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(21, 213, 255, 0.1) 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition-base);
}

.feature-item:hover {
    transform: translateY(-10px);
    border-color: var(--accent-primary);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), var(--shadow-glow);
}

.feature-item:hover::before {
    opacity: 1;
}

.feature-item__icon {
    width: 60px;
    height: 60px;
    background: rgba(21, 213, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: 1.5rem;
    color: var(--accent-primary);
    transition: all var(--transition-base);
    border: 1px solid rgba(21, 213, 255, 0.2);
}

.feature-item:hover .feature-item__icon {
    background: var(--accent-primary);
    color: var(--bg-deep);
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 20px rgba(21, 213, 255, 0.4);
}

.feature-item__title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--text-heading);
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    display: -webkit-box;
    height: 50px;
}

.feature-item__text {
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.6;
    opacity: 0.8;
}

.ssi-closing {
    background: rgba(21, 213, 255, 0.05);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-primary);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.ssi-closing p {
    font-size: 1.1rem;
    color: var(--text-heading);
}

.ssi-closing strong {
    color: var(--accent-primary);
}

/* ============================================
   Dive Sites - Area Headers
   ============================================ */
.dive-sites__area {
    margin-bottom: var(--space-xl);
    border-left: 4px solid var(--accent-primary);
    padding-left: var(--space-lg);
    text-align: left;
}

.area-title {
    font-size: 1.75rem;
    color: var(--text-heading);
    font-family: var(--font-heading);
    font-weight: 700;
    margin-bottom: 4px;
}

.area-subtitle {
    font-size: 1rem;
    color: var(--text-body);
    opacity: 0.7;
}

/* ============================================
   Dive Sites - Bento Grid Redesign
   ============================================ */
.dive-bento {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 20px;
}

@media (min-width: 992px) {
    .dive-bento {
        grid-template-columns: repeat(3, 1fr);
        grid-auto-rows: minmax(280px, auto);
    }

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

    .dive-bento--2-cols .dive-card .dive-card__title {
        font-size: clamp(1.5rem, 2.5vw, 2rem);
    }
}

.dive-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 250px;
    background: var(--bg-card);
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

@media (min-width: 992px) {
    .dive-card--featured {
        grid-column: span 2;
        grid-row: span 2;
        min-height: auto;
    }

    .dive-card--wide {
        grid-column: span 3;
        min-height: 350px;
    }
}

.dive-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(6, 24, 38, 0);
    backdrop-filter: blur(0px);
    z-index: 2;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.dive-card:hover::after {
    background: rgba(6, 24, 38, 0.45);
    backdrop-filter: blur(6px);
}

.dive-card__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.dive-card__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.2, 0, 0.2, 1);
}

.dive-card:hover .dive-card__bg img {
    transform: scale(1.08);
}

.dive-card__overlay {
    position: relative;
    z-index: 3;
    padding: var(--space-xl);
    background: linear-gradient(to top, rgba(6, 24, 38, 0.9) 0%, rgba(6, 24, 38, 0.3) 50%, transparent 100%);
    width: 100%;
    transition: all var(--transition-base);
}

.dive-card__tags {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.tag {
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    padding: 4px 12px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    backdrop-filter: blur(5px);
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.tag--accent {
    background: var(--accent-primary);
    color: var(--bg-deep);
}

.dive-card__title {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 0;
    transition: margin 0.4s ease;
}

.dive-card:hover .dive-card__title {
    margin-bottom: 12px;
}

.dive-card__info {
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.2, 0, 0.2, 1);
}

.dive-card:hover .dive-card__info {
    opacity: 1;
    visibility: visible;
    max-height: 500px;
}

.dive-card__tagline {
    font-style: italic;
    font-size: 0.95rem;
    color: var(--accent-primary);
    margin-bottom: 5px;
}

.dive-card__details {
    font-size: 0.85rem;
    color: var(--text-body);
    opacity: 0.9;
    line-height: 1.4;
}

.dive-card__desc {
    font-size: 0.95rem;
    color: var(--text-body);
    opacity: 0.8;
    max-width: 600px;
    line-height: 1.5;
    margin-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 10px;
}

.dive-card:not(.dive-card--featured):not(.dive-card--wide) .dive-card__title {
    font-size: 1.2rem;
}

.dive-card:not(.dive-card--featured):not(.dive-card--wide) .dive-card__info {
    gap: 4px;
}

.dive-card:not(.dive-card--featured):not(.dive-card--wide) .dive-card__details,
.dive-card:not(.dive-card--featured):not(.dive-card--wide) .dive-card__desc {
    font-size: 0.8rem;
}


/* ============================================
   Final CTA
   ============================================ */
.final-cta {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--bg-deep) 100%);
    position: relative;
    overflow: hidden;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 4rem);
    margin-bottom: var(--space-sm);
}

.cta-subtitle {
    font-size: 1.5rem;
}

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

/* ============================================
   Footer - Premium Design
   ============================================ */
.footer {
    padding: 0;
    background: linear-gradient(180deg, #061826 0%, #040a12 100%);
    border-top: 1px solid rgba(21, 213, 255, 0.15);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(21, 213, 255, 0.4), transparent);
}

/* Zone A: CTA Strip */
.footer__cta {
    padding: var(--space-3xl) var(--space-lg);
    border-bottom: 1px solid rgba(21, 213, 255, 0.15);
}

.footer__cta-content {
    max-width: 900px;
    margin: 0 auto;
    background: rgba(15, 45, 70, 0.6);
    border: 1px solid rgba(21, 213, 255, 0.2);
    border-radius: 16px;
    padding: var(--space-2xl);
    text-align: center;
    backdrop-filter: blur(10px);
}

.footer__cta-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: var(--space-sm);
    line-height: 1.2;
}

.footer__cta-subtitle {
    font-size: 1rem;
    color: var(--text-body);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

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

.footer__cta-btn-primary,
.footer__cta-btn-secondary {
    min-width: 160px;
    padding: var(--space-sm) var(--space-xl);
    font-weight: 600;
    border-radius: 12px;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.footer__cta-btn-primary {
    background: var(--accent-primary);
    color: var(--bg-deep);
    border: 1px solid var(--accent-primary);
    font-weight: 600;
}

.footer__cta-btn-primary:hover {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(21, 213, 255, 0.4);
}

.footer__cta-btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.footer__cta-btn-secondary:hover {
    background: rgba(21, 213, 255, 0.1);
    border-color: var(--accent-secondary);
    color: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(21, 213, 255, 0.2);
}

.footer__cta-trust {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-lg);
}

.footer__cta-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(21, 213, 255, 0.1);
    border: 1px solid rgba(21, 213, 255, 0.2);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-body);
    transition: all var(--transition-fast);
}

.footer__cta-chip svg {
    flex-shrink: 0;
    color: var(--accent-primary);
}

.footer__cta-chip:hover {
    background: rgba(21, 213, 255, 0.15);
    border-color: var(--accent-primary);
    color: var(--text-heading);
}

/* Zone B: Main Footer Grid */
.footer__main {
    padding: var(--space-3xl) var(--space-lg);
    border-bottom: 1px solid rgba(21, 213, 255, 0.15);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    max-width: 1280px;
    margin: 0 auto;
}

.footer__column {
    display: flex;
    flex-direction: column;
}

.footer__column-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--space-md);
    line-height: 1.2;
}

.footer__column-heading {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.875rem;
}

.footer__column-description {
    font-size: 0.9375rem;
    color: var(--text-body);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.footer__social {
    display: flex;
    gap: var(--space-sm);
    margin-top: auto;
}

.footer__social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(21, 213, 255, 0.1);
    border: 1px solid rgba(21, 213, 255, 0.2);
    color: var(--text-body);
    transition: all var(--transition-base);
    text-decoration: none;
}

.footer__social-link:hover {
    background: rgba(21, 213, 255, 0.2);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(21, 213, 255, 0.3);
}

.footer__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__nav-link {
    color: var(--text-body);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    position: relative;
    display: inline-block;
    width: fit-content;
    padding-bottom: 2px;
}

.footer__nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-primary);
    transition: width var(--transition-base);
}

.footer__nav-link:hover {
    color: var(--accent-primary);
}

.footer__nav-link:hover::after {
    width: 100%;
}

/* Location Cards */
.footer__column--location {
    display: flex;
    min-width: 260px;
    width: 100%;
    flex: 1 1 0;
}

.footer__location-card {
    width: 100%;
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    font-style: normal;
    transition: all var(--transition-base);
}

.footer__location-card:hover {
    background: rgba(21, 213, 255, 0.05);
    border-color: rgba(21, 213, 255, 0.2);
}

.footer__location-title {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 0.5rem;
}

.footer__location-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    color: var(--text-body);
    font-size: 0.8125rem;
    line-height: 1.5;
    margin-bottom: 0.375rem;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__location-item:last-child {
    margin-bottom: 0;
}

.footer__location-item svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--accent-primary);
    width: 14px;
    height: 14px;
}

.footer__location-item:hover {
    color: var(--accent-primary);
}

/* Zone C: Certificates */
.footer__certificates {
    padding: var(--space-2xl) var(--space-lg);
    border-bottom: 1px solid rgba(21, 213, 255, 0.15);
    text-align: center;
}

.footer__certificates-label {
    font-size: 0.875rem;
    color: var(--text-body);
    margin-bottom: var(--space-lg);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.footer__certificates-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-2xl);
    flex-wrap: wrap;
}

.footer__cert-logo {
    height: 50px;
    width: auto;
    filter: grayscale(30%);
    transition: all var(--transition-base);
}

.footer__cert-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
    transform: translateY(-2px);
}

/* Zone D: Bottom Bar */
.footer__bottom {
    padding: var(--space-lg) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1280px;
    margin: 0 auto;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer__copyright {
    color: var(--text-body);
    font-size: 0.875rem;
    margin: 0;
}

.footer__bottom-nav {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.footer__bottom-link {
    color: var(--text-body);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
    position: relative;
}

.footer__bottom-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-primary);
    transition: width var(--transition-base);
}

.footer__bottom-link:hover {
    color: var(--accent-primary);
}

.footer__bottom-link:hover::after {
    width: 100%;
}

.footer__bottom-separator {
    color: var(--text-muted);
    opacity: 0.5;
    font-size: 0.875rem;
}

/* ============================================
   Responsive Footer Adjustments
   ============================================ */
@media (min-width: 768px) and (max-width: 1023px) {
    :root {
        --space-3xl: 4rem;
        --space-2xl: 3rem;
    }

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

    .footer__column--location {
        grid-column: span 1;
    }

    .footer__cta-content {
        padding: var(--space-xl);
    }
}

@media (max-width: 767px) {
    .footer__cta {
        padding: var(--space-2xl) var(--space-md);
    }

    .footer__cta-content {
        padding: var(--space-lg);
    }

    .footer__cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .footer__cta-btn-primary,
    .footer__cta-btn-secondary {
        width: 100%;
    }

    .footer__cta-trust {
        flex-direction: column;
        align-items: center;
    }

    .footer__main {
        padding: var(--space-2xl) var(--space-md);
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .footer__certificates {
        padding: var(--space-xl) var(--space-md);
    }

    .footer__certificates-logos {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .footer__cert-logo {
        height: 40px;
    }

    .footer__bottom {
        flex-direction: column;
        text-align: center;
        padding: var(--space-lg) var(--space-md);
    }

    .footer__bottom-nav {
        justify-content: center;
    }

    .intro__features {
        display: none !important;
    }

    span.line {
        display: none;
    }

    .intro__subtitle {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --space-3xl: 3rem;
        --space-2xl: 2.5rem;
        --space-xl: 2rem;
        --space-lg: 1.5rem;
    }

    .footer__cta-title {
        font-size: 1.5rem;
    }

    .footer__column-title {
        font-size: 1.25rem;
    }
}