/* ============================================
   KOSMOS RESTAURANT — Design System
   Palette: Midnight Blue (#0A192F) + Mint (#2DD4BF)
   Fonts: Libre Baskerville (serif) + Manrope (sans)
============================================ */

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

:root {
    --midnight: #0A192F;
    --midnight-light: #112240;
    --midnight-mid: #1A2F4B;
    --mint: #2DD4BF;
    --mint-dark: #14B8A6;
    --mint-light: #5EEAD4;
    --cream: #F8FAFC;
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --font-serif: 'Libre Baskerville', Georgia, serif;
    --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
    --shadow-sm: 0 1px 2px rgba(10, 25, 47, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(10, 25, 47, 0.08), 0 2px 4px -2px rgba(10, 25, 47, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(10, 25, 47, 0.08), 0 4px 6px -4px rgba(10, 25, 47, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(10, 25, 47, 0.1), 0 8px 10px -6px rgba(10, 25, 47, 0.05);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   NAVIGATION
============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(45, 212, 191, 0.1);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 25, 47, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.15em;
    color: var(--white);
}

.logo svg {
    color: var(--mint);
}

.logo-light {
    color: var(--white);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-300);
    letter-spacing: 0.04em;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--mint);
    transition: var(--transition);
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--mint);
    color: var(--midnight);
}

.btn-primary:hover {
    background: var(--mint-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(45, 212, 191, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    border-color: var(--mint);
    color: var(--mint);
}

.btn-outline {
    background: transparent;
    color: var(--midnight);
    border: 2px solid var(--midnight);
}

.btn-outline:hover {
    background: var(--midnight);
    color: var(--white);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-nav {
    padding: 10px 20px;
    background: var(--mint);
    color: var(--midnight);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.btn-nav:hover {
    background: var(--mint-dark);
}

.btn-mobile-cta {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    background: var(--mint);
    color: var(--midnight);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    margin-top: 16px;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
    transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--midnight);
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--white);
    padding: 8px;
}

.mobile-menu ul {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.mobile-link {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--gray-300);
    padding: 12px 24px;
    transition: var(--transition);
}

.mobile-link:hover {
    color: var(--mint);
}

/* ============================================
   HERO SECTION
============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--midnight);
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 70% 50%, rgba(45, 212, 191, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 80%, rgba(45, 212, 191, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 540px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 24px;
}

.tag-line {
    display: block;
    width: 40px;
    height: 2px;
    background: var(--mint);
}

.hero-headline {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3.25rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--white);
    margin-bottom: 20px;
}

.hero-headline em {
    color: var(--mint);
    font-style: italic;
}

.hero-sub {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--gray-400);
    margin-bottom: 36px;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

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

.stat-number {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--midnight-mid);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
}

.hero-image-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero-image-main img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.hero-image-accent {
    position: absolute;
    bottom: -40px;
    left: -60px;
    width: 260px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 4px solid var(--midnight);
}

.hero-image-accent img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.accent-badge {
    position: absolute;
    bottom: 12px;
    left: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--mint);
    color: var(--midnight);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.04em;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gray-500);
    z-index: 1;
}

.hero-scroll svg {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(4px); }
    60% { transform: translateY(2px); }
}

/* ============================================
   SECTION COMMONS
============================================ */
.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--mint-dark);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--midnight);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--gray-500);
    line-height: 1.7;
    max-width: 560px;
}

/* ============================================
   MENU SECTION
============================================ */
.menu-section {
    padding: 100px 0;
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header .section-subtitle {
    margin: 0 auto;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 56px;
}

.menu-category {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.menu-category:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--mint);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-100);
}

.category-header h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--midnight);
}

.category-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(to right, var(--mint), transparent);
}

.menu-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.menu-list li {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.menu-item-name {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--gray-800);
    white-space: nowrap;
}

.menu-item-dots {
    flex: 1;
    border-bottom: 1px dotted var(--gray-300);
    min-width: 16px;
    margin-bottom: 4px;
}

.menu-item-desc {
    font-size: 0.8125rem;
    color: var(--gray-500);
    line-height: 1.4;
}

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

/* ============================================
   ABOUT SECTION
============================================ */
.about-section {
    padding: 100px 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-visual {
    position: relative;
}

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

.about-img-main {
    position: absolute;
    top: 0;
    left: 0;
    width: 75%;
    height: 75%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-img-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-img-secondary {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 55%;
    height: 50%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 4px solid var(--white);
}

.about-img-secondary img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-content {
    max-width: 480px;
}

.about-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 20px;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 40px;
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.value-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--midnight);
    border-radius: var(--radius-md);
    color: var(--mint);
}

.value-item h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--midnight);
    margin-bottom: 4px;
}

.value-item p {
    font-size: 0.875rem;
    color: var(--gray-500);
    line-height: 1.5;
}

/* ============================================
   EXPERIENCE SECTION
============================================ */
.experience-section {
    padding: 100px 0;
    background: var(--midnight);
}

.experience-header {
    text-align: center;
    margin-bottom: 64px;
}

.experience-header .section-tag {
    color: var(--mint);
}

.experience-header .section-title {
    color: var(--white);
    max-width: 640px;
    margin: 0 auto 16px;
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.exp-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--midnight-light);
    border: 1px solid rgba(45, 212, 191, 0.1);
    transition: var(--transition);
}

.exp-card:hover {
    border-color: rgba(45, 212, 191, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.exp-card-image {
    height: 220px;
    overflow: hidden;
}

.exp-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.exp-card:hover .exp-card-image img {
    transform: scale(1.05);
}

.exp-card-content {
    padding: 28px 24px;
}

.exp-card-content h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
}

.exp-card-content p {
    font-size: 0.9375rem;
    color: var(--gray-400);
    line-height: 1.7;
}

/* ============================================
   TESTIMONIAL SECTION
============================================ */
.testimonial-section {
    padding: 100px 0;
    background: var(--cream);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.testimonial-quote {
    position: relative;
    padding-left: 32px;
}

.quote-mark {
    color: var(--mint);
    opacity: 0.4;
    margin-bottom: 16px;
}

.testimonial-quote blockquote {
    font-family: var(--font-serif);
    font-size: 1.375rem;
    font-style: italic;
    line-height: 1.6;
    color: var(--midnight);
}

.testimonial-quote blockquote p {
    margin-bottom: 20px;
}

.testimonial-source {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-600);
    letter-spacing: 0.04em;
}

.testimonial-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    height: 500px;
}

.testimonial-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================
   VISIT SECTION
============================================ */
.visit-section {
    padding: 100px 0;
    background: var(--white);
}

.visit-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.visit-subtitle {
    font-size: 1.0625rem;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 36px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    color: var(--midnight);
}

.contact-item span:first-child {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 4px;
}

.contact-item span:last-child,
.contact-item a {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.6;
}

.contact-item a:hover {
    color: var(--mint-dark);
}

.visit-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    height: 480px;
    border: 1px solid var(--gray-200);
}

/* ============================================
   FOOTER
============================================ */
.footer {
    background: var(--midnight);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
    font-size: 0.9375rem;
    color: var(--gray-400);
    line-height: 1.7;
    margin-top: 16px;
    max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mint);
    margin-bottom: 20px;
}

.footer-links ul,
.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a,
.footer-contact a {
    font-size: 0.9375rem;
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--white);
}

.footer-links li,
.footer-contact li {
    font-size: 0.9375rem;
    color: var(--gray-400);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    font-size: 0.8125rem;
    color: var(--gray-500);
}

/* ============================================
   SCROLL REVEAL (Progressive Enhancement)
============================================ */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-visual {
        max-width: 480px;
        margin: 0 auto;
    }
    
    .hero-image-accent {
        left: -20px;
        bottom: -20px;
        width: 200px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-image-stack {
        height: 450px;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .experience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .testimonial-image {
        height: 350px;
        order: -1;
    }
    
    .visit-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .visit-map {
        height: 360px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: 80px;
    }
    
    .hero-container {
        gap: 40px;
    }
    
    .hero-headline {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        justify-content: center;
    }
    
    .hero-stats {
        gap: 16px;
    }
    
    .stat-number {
        font-size: 1rem;
    }
    
    .menu-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .menu-category {
        padding: 24px 20px;
    }
    
    .experience-grid {
        grid-template-columns: 1fr;
    }
    
    .about-image-stack {
        height: 380px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .hero-scroll {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding-top: 80px;
    }
    
    .hero-image-accent {
        width: 160px;
        left: -10px;
        bottom: -10px;
    }
    
    .hero-image-accent img {
        height: 130px;
    }
    
    .section-title {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }
    
    .menu-section,
    .about-section,
    .experience-section,
    .testimonial-section,
    .visit-section {
        padding: 64px 0;
    }
}