/* =========================================
   1. VARIABLES & RESET (DIPLOMATIC LUXURY)
   ========================================= */
:root {
    /* Colors - Deep Navy & Diplomatic Gold */
    --color-primary: #d4af37;
    /* Metallic Gold */
    --color-primary-light: #f3d46a;
    --color-primary-dark: #a68424;

    --color-accent: #ffffff;
    /* White accents */

    --color-bg: #0a192f;
    /* Deep Navy Blue */
    --color-bg-alt: #112240;
    /* Slightly lighter navy for cards */
    --color-bg-glass: rgba(17, 34, 64, 0.7);

    --color-text: #e6f1ff;
    /* Silver-White text */
    --color-text-muted: #8892b0;
    /* Muted Slate */
    --color-heading: #ccd6f6;
    /* Bright Silver */

    --color-border: rgba(212, 175, 55, 0.3);
    /* Transparent Gold Border */

    /* Fonts */
    --font-heading: 'Montserrat', sans-serif;
    /* Geometric, Official */
    --font-body: 'Outfit', sans-serif;
    /* Clean, Modern */

    /* Spacing & Layout */
    --header-height: 6rem;
    --container-width: 1200px;

    /* Effects */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
    --shadow-gold: 0 0 20px rgba(212, 175, 55, 0.2);
    --transition: 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    --radius: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    background-image:
        linear-gradient(rgba(10, 25, 47, 0.95), rgba(10, 25, 47, 0.95)),
        url('../assets/images/logo.png');
    /* Subtle texture hint if transparent logo */
    background-attachment: fixed;
    background-size: cover;
}

ul {
    list-style: none;
}

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

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

/* =========================================
   2. REUSABLE CLASSES
   ========================================= */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 7rem 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--color-heading);
    margin-bottom: 3rem;
    font-weight: 700;
    line-height: 1.1;
    text-align: center;
    position: relative;
    padding-bottom: 1.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-primary);
    border-radius: 2px;
}

.subtitle {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.2rem;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: rgba(212, 175, 55, 0.1);
    box-shadow: var(--shadow-gold);
    transform: translateY(-3px);
}

.btn-outline {
    border-color: var(--color-text-muted);
    color: var(--color-text-muted);
    background: transparent;
}

.btn-outline:hover {
    border-color: var(--color-text);
    color: var(--color-text);
}

.btn-full {
    width: 100%;
    background-color: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-primary);
}

.btn-full:hover {
    background-color: var(--color-primary-light);
    color: var(--color-bg);
}

/* =========================================
   3. HEADER
   ========================================= */
.header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    background-color: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    height: var(--header-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-img {
    height: 90px;
    width: auto;
    transition: var(--transition);
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.2));
}

.header.scroll-header .logo-img {
    height: 70px;
}

/* LANGUAGE SWITCHER */
.lang-switch {
    display: flex;
    gap: 0.5rem;
    margin-right: 1.5rem;
}

.lang-btn {
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-family: var(--font-heading);
    font-weight: 500;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* NAV */
.nav-list {
    display: flex;
    column-gap: 2rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--color-heading);
    font-size: 0.9rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-btns {
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: none;
    font-size: 1.8rem;
    color: var(--color-primary);
    cursor: pointer;
    margin-left: 1rem;
}

/* =========================================
   4. HERO SECTION
   ========================================= */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.5) contrast(1.1);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom,
            rgba(10, 25, 47, 0.7),
            rgba(10, 25, 47, 0.9));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding-top: 5rem;
}

.badge-year {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: 2rem;
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: rgba(10, 25, 47, 0.8);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--color-heading);
    letter-spacing: -1px;
}

.highlight {
    color: var(--color-primary);
    text-shadow: var(--shadow-gold);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

/* =========================================
   5. SECTIONS
   ========================================= */
/* ABOUT WITH GRID */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-subtitle {
    font-family: var(--font-heading);
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
}

.about-subtitle::before {
    content: '';
    display: inline-block;
    width: 40px;
    height: 1px;
    background-color: var(--color-primary);
    margin-right: 1rem;
}

.about-text {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    line-height: 1.8;
}

.stats-grid {
    display: flex;
    gap: 4rem;
    margin-top: 3rem;
    border-top: 1px solid rgba(212, 175, 55, 0.1);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
    padding: 2rem 0;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-heading);
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

.about-visuals {
    position: relative;
    height: 600px;
}

.visual-card {
    position: absolute;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.visual-card:hover {
    z-index: 10;
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--color-primary);
}

.visual-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%);
    transition: 0.5s;
}

.visual-card:hover img {
    filter: grayscale(0%);
}

.main-visual {
    top: 0;
    left: 0;
    width: 85%;
    height: 70%;
    z-index: 1;
    border-bottom: 2px solid var(--color-primary);
}

.sub-visual {
    bottom: 0;
    right: 0;
    width: 60%;
    height: 45%;
    z-index: 2;
    border-top: 2px solid var(--color-primary);
    background: var(--color-bg);
    /* frame effect */
    padding: 0.5rem 0 0 0.5rem;
}

/* GALLERY */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.gallery-item {
    position: relative;
    height: 300px;
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--color-bg-alt);
    transition: var(--transition);
    cursor: pointer;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    filter: brightness(0.8);
}

.gallery-item:hover img {
    transform: scale(1.1);
    filter: brightness(1);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 25, 47, 0.9), transparent);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: 0.3s;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-text {
    font-family: var(--font-heading);
    color: var(--color-heading);
    font-weight: 600;
    font-size: 1.2rem;
    transform: translateY(20px);
    transition: 0.4s;
}

.gallery-item:hover .gallery-text {
    transform: translateY(0);
}

/* ADVANTAGES */
.advantages {
    background-color: var(--color-bg-alt);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--color-bg);
    padding: 2.5rem 2rem;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-7px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-gold);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--color-heading);
}

.card-text {
    color: var(--color-text-muted);
    font-size: 1rem;
}

/* =========================================
   6. CONTACT
   ========================================= */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    border: 1px solid transparent;
    transition: var(--transition);
}

.info-item:hover {
    border-color: var(--color-primary);
    background: rgba(17, 34, 64, 0.5);
}

.icon-box {
    width: 45px;
    height: 45px;
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-right: 1.5rem;
    flex-shrink: 0;
}

.info-item h4 {
    font-family: var(--font-heading);
    color: var(--color-heading);
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

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

/* Form */
.contact-form-wrapper {
    background: var(--color-bg-alt);
    padding: 3rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    text-align: center;
    color: var(--color-heading);
    margin-bottom: 2.5rem;
}

.input-group {
    position: relative;
    margin-bottom: 2.5rem;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 10px 0;
    font-size: 1.1rem;
    color: var(--color-heading);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-text-muted);
    outline: none;
    transition: 0.3s;
    font-family: var(--font-body);
}

.input-group label {
    position: absolute;
    top: 10px;
    left: 0;
    color: var(--color-text-muted);
    pointer-events: none;
    transition: 0.3s;
}

.input-group input:focus,
.input-group input:valid,
.input-group select:focus,
.input-group select:valid {
    border-bottom-color: var(--color-primary);
}

.input-group input:focus~label,
.input-group input:valid~label,
.input-group select:focus~label,
.input-group select:valid~label {
    top: -20px;
    font-size: 0.85rem;
    color: var(--color-primary);
}

option {
    background-color: var(--color-bg);
}

/* =========================================
   7. FOOTER
   ========================================= */
.footer {
    background: var(--color-bg-alt);
    padding: 4rem 0 2rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--color-heading);
    font-weight: 700;
}

.footer-logo p {
    color: var(--color-primary);
    margin-top: 0.5rem;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.footer-copyright {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* =========================================
   8. RESPONSIVE
   ========================================= */
@media screen and (max-width: 968px) {
    .container {
        padding: 0 1.5rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .about-grid,
    .contact-container {
        grid-template-columns: 1fr;
    }

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

    .about-visuals {
        height: 400px;
        margin-top: 3rem;
    }
}

@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        bottom: -100%;
        left: 0;
        width: 100%;
        background-color: var(--color-bg);
        padding: 4rem 1.5rem;
        transition: 0.4s;
        z-index: 100;
        border-top: 1px solid var(--color-primary);
    }

    .nav-menu.show-menu {
        bottom: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .nav-toggle,
    .nav-close {
        display: block;
    }

    .sm-hidden {
        display: none;
    }

    .lang-switch {
        margin-right: 0.5rem;
    }
}