/* ===== CSS Variables - Carnegie Library Theme ===== */
:root {
    --cl-black: #000000;
    --cl-dark: #1A1A1A;
    --cl-gray-dark: #333333;
    --cl-gray: #5A5A5A;
    --cl-gray-medium: #707070;
    --cl-gray-light: #E0E0E0;
    --cl-gray-soft: #F8F8F8;
    --cl-white: #FFFFFF;
    --cl-red: #C41230;
    --cl-red-dark: #A50E26;
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
}

/* ===== Global Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--cl-dark);
    background-color: var(--cl-white);
    font-size: 16px;
}

body.menu-open {
    overflow: hidden;
}

/* ===== HEADER ===== */
header {
    background-color: var(--cl-white);
    border-bottom: 1px solid var(--cl-gray-light);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

/* Logo Container */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.logo img {
    height: 45px;
    width: auto;
    display: block;
}

.logo h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--cl-dark);
    margin: 0;
    white-space: nowrap;
}

/* Login Box */
.login-box {
    background-color: var(--cl-black);
    padding: 10px 24px;
    transition: background-color 0.3s ease;
    border: none;
    flex-shrink: 0;
}

.login-box h3 {
    color: var(--cl-white);
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

.login-box:hover {
    background-color: var(--cl-red);
}

/* ===== NAVIGATION - DESKTOP ===== */
nav {
    background-color: var(--cl-white);
    border-bottom: 1px solid var(--cl-gray-light);
    position: sticky;
    top: 81px;
    z-index: 999;
    width: 100%;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-menu {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
    gap: 30px;
}

.nav-menu li {
    margin: 0;
}

.nav-menu li a {
    display: block;
    padding: 16px 0;
    color: var(--cl-dark);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 3px solid transparent;
    transition: border-color 0.3s ease;
    white-space: nowrap;
    text-decoration: none;
}

.nav-menu li a:hover {
    border-bottom-color: var(--cl-red);
    color: var(--cl-dark);
}

/* ===== HAMBURGER MENU - HANYA DI MOBILE ===== */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    margin: 15px 0;
}

.hamburger span {
    width: 100%;
    height: 3px;
    background-color: var(--cl-dark);
    transition: all 0.3s ease;
    border-radius: 3px;
}

/* Hamburger Animation */
.hamburger.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* ===== MOBILE MENU OVERLAY ===== */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.menu-overlay.active {
    display: block;
    opacity: 1;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../assets/img/foto.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--cl-white);
    margin-bottom: 60px;
}

.hero-content {
    max-width: 900px;
    padding: 40px 20px;
    width: 100%;
}

.hero h2 {
    color: var(--cl-white);
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero p {
    color: var(--cl-white);
    font-size: clamp(1rem, 3vw, 1.3rem);
    margin-bottom: 30px;
    text-shadow: 0 1px 5px rgba(0,0,0,0.3);
}

.hero-btn {
    display: inline-block;
    background-color: var(--cl-red);
    color: var(--cl-white);
    padding: 15px 40px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    border: none;
    transition: background-color 0.3s ease;
    text-decoration: none;
}

.hero-btn:hover {
    background-color: var(--cl-red-dark);
}

/* ===== MAIN CONTENT ===== */
main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.content-section {
    margin-bottom: 80px;
}

.content-section h2 {
    font-size: clamp(1.8rem, 4vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 1.8rem;
    position: relative;
    padding-bottom: 15px;
}

.content-section h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background-color: var(--cl-red);
}

/* ===== QUICK LINKS ===== */
.social-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.link-card {
    background-color: var(--cl-gray-soft);
    padding: 40px;
    transition: all 0.3s ease;
    border: 1px solid var(--cl-gray-light);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-decoration: none;
}

.link-card i {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--cl-red);
}

.link-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--cl-dark);
}

.link-card p {
    color: var(--cl-gray-dark);
    font-size: 1rem;
    margin-bottom: 0;
}

.link-card:hover {
    background-color: var(--cl-red);
    transform: translateY(-5px);
}

.link-card:hover i,
.link-card:hover h3,
.link-card:hover p {
    color: var(--cl-white);
}

/* ===== SERVICES & COLLECTIONS ===== */
.services-grid,
.collections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.service-item,
.collection-item {
    padding: 18px 0;
    border-bottom: 1px solid var(--cl-gray-light);
    display: flex;
    align-items: center;
    font-size: 1.05rem;
}

.service-item span,
.collection-item span {
    display: inline-block;
    margin-right: 15px;
    color: var(--cl-red);
    font-weight: 600;
    font-size: 1.2rem;
}

/* ===== NEWS SECTION ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 40px;
}

.news-item {
    border-top: 4px solid var(--cl-red);
    padding-top: 25px;
}

.news-item h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--cl-dark);
}

.news-date {
    font-size: 0.85rem;
    color: var(--cl-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    font-weight: 500;
}

/* ===== FOOTER ===== */
footer {
    background-color: var(--cl-black);
    color: var(--cl-white);
    padding: 60px 20px;
    margin-top: 80px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
}

.footer-section h4 {
    color: var(--cl-white);
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-section p {
    color: var(--cl-gray-light);
    margin-bottom: 10px;
}

.social-icons {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.social-icons a {
    color: var(--cl-white);
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-icons a:hover {
    color: var(--cl-red);
}

.footer-bottom {
    max-width: 1400px;
    margin: 40px auto 0;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    color: var(--cl-gray-light);
    margin-bottom: 5px;
}

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Tablet Landscape */
@media (max-width: 992px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

/* Tablet Portrait & Mobile - HAMBURGER MENU AKTIF */
@media (max-width: 850px) {
    /* Header */
    .header-content {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .logo {
        justify-content: center;
    }
    
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .login-box {
        width: 100%;
        text-align: center;
        padding: 12px;
    }
    
    .login-box h3 {
        white-space: normal;
    }
    
    /* Navigation with Hamburger */
    nav {
        top: 117px;
    }
    
    .nav-container {
        padding: 0 20px;
    }
    
    /* Show hamburger, hide menu */
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--cl-white);
        flex-direction: column;
        padding: 80px 30px 30px;
        gap: 0;
        transition: left 0.3s ease;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
        z-index: 999;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
        margin: 0;
        border-bottom: 1px solid var(--cl-gray-light);
    }
    
    .nav-menu li:last-child {
        border-bottom: none;
    }
    
    .nav-menu li a {
        padding: 18px 0;
        font-size: 1.1rem;
        white-space: normal;
        border-bottom: none;
    }
    
    .nav-menu li a:hover {
        border-bottom: none;
        color: var(--cl-red);
        background-color: transparent;
    }
    
    /* Menu Overlay */
    .menu-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 998;
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    .menu-overlay.active {
        display: block;
        opacity: 1;
    }
    
    /* Hero */
    .hero {
        min-height: 350px;
        margin-bottom: 40px;
    }
}

/* Mobile Landscape */
@media (max-width: 768px) {
    header {
        padding: 12px 0;
    }
    
    .logo img {
        height: 40px;
    }
    
    .logo h1 {
        font-size: 1.2rem;
    }
    
    nav {
        top: 113px;
    }
    
    .nav-menu {
        width: 85%;
        padding: 70px 25px 30px;
    }
    
    .hero {
        min-height: 300px;
    }
    
    .social-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .link-card {
        padding: 30px;
    }
    
    .link-card h3 {
        font-size: 1.5rem;
    }
    
    .services-grid,
    .collections-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* Mobile Portrait */
@media (max-width: 600px) {
    .logo {
        flex-wrap: wrap;
        text-align: center;
    }
    
    .logo h1 {
        font-size: 1.1rem;
        white-space: normal;
    }
    
    nav {
        top: 128px;
    }
    
    .nav-menu {
        width: 90%;
        padding: 60px 20px 25px;
    }
    
    .nav-menu li a {
        padding: 16px 0;
        font-size: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* Layar sangat kecil */
@media (max-width: 380px) {
    .logo h1 {
        font-size: 1rem;
    }
    
    .login-box {
        padding: 10px;
    }
    
    .login-box h3 {
        font-size: 0.85rem;
    }
    
    nav {
        top: 124px;
    }
    
    .nav-menu {
        width: 100%;
        padding: 60px 15px 25px;
    }
}