:root {
    --bg-color: #0f172a;
    --text-color: #e2e8f0;
    --accent-color: #f43f5e;
    --accent-hover: #e11d48;
    --card-bg: #1e293b;
    --border-color: #334155;
    --header-bg: rgba(15, 23, 42, 0.95);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a:hover {
    color: var(--accent-hover);
}

/* Header Base */
header {
    background-color: var(--header-bg);
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

/* Header Sticky */
header.header-sticky, header.header-fade {
    position: fixed;
    top: 0;
    backdrop-filter: blur(15px);
}

/* Header Normal */
header:not(.header-sticky):not(.header-fade) {
    position: relative;
}

/* Header Fade on Scroll */
header.header-fade.scrolled {
    opacity: 0.8;
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

body:has(header:not(.header-sticky):not(.header-fade)) .main-wrapper {
    margin-top: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 55px;
    transition: var(--transition);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}
.logo img:hover {
    transform: scale(1.05) rotate(-2deg);
}

.nav-top ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-top ul li a {
    color: #f1f5f9;
    font-family: 'Roboto', sans-serif;
    font-weight: 500;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 5px;
    position: relative;
    transition: var(--transition);
}

.nav-top ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-color);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

.nav-top ul li a:hover {
    color: var(--accent-color);
    text-shadow: 0 0 10px rgba(244, 63, 94, 0.3);
}

.nav-top ul li a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
}
.mobile-menu-btn:hover {
    color: var(--accent-color);
}

/* Main Layout */
.main-wrapper {
    display: block;
    margin-top: 100px;
    margin-bottom: 40px;
    min-height: calc(100vh - 200px);
}

/* Right Menu (Sidebar) */
.sidebar {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
    height: max-content;
}

.sidebar h3 {
    font-size: 18px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent-color);
    text-transform: uppercase;
}

.nav-right ul {
    list-style: none;
}

.nav-right ul li {
    margin-bottom: 10px;
}

.nav-right ul li a {
    display: block;
    padding: 10px 15px;
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
    color: #cbd5e1;
    transition: var(--transition);
}

.nav-right ul li a:hover {
    background: var(--accent-color);
    color: #fff;
    transform: translateX(5px);
}

/* Content Area */
.content-area {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    border: 1px solid var(--border-color);
}
.content-area img, .article-content img {
    max-width: 100%;
    height: auto !important;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(15,23,42,0.8), rgba(15,23,42,0.9)), url('../images/banner.jpg') center/cover;
    border-radius: 12px;
    padding: 60px 30px;
    text-align: center;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

.hero h1 {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.1rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto 20px auto;
}

.btn {
    display: inline-block;
    background: var(--accent-color);
    color: #fff;
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(244, 63, 94, 0.4);
}
.btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(244, 63, 94, 0.6);
    color: #fff;
}

/* Footer */
footer {
    background-color: var(--card-bg);
    padding: 40px 0;
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

/* Responsive */
@media (max-width: 992px) {
    .main-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-top {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--card-bg);
        border-bottom: 1px solid var(--border-color);
    }
    .nav-top.active {
        display: block;
    }
    .nav-top ul {
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }
    .mobile-menu-btn {
        display: block;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
}