:root {
    --primary-dark: #1a1f2e;
    --secondary-dark: #252b3d;
    --accent-blue: #4a6fa5;
    --accent-teal: #2ab7a9;
    --accent-red: #c44536;
    --text-light: #e0e6f0;
    --text-muted: #94a3b8;
    --border-color: #374151;
    --gradient-main: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-teal) 100%);
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    --radius: 12px;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
html {
    scroll-behavior: smooth;
}
body {
    background-color: var(--primary-dark);
    color: var(--text-light);
    line-height: 1.7;
    overflow-x: hidden;
}
a {
    color: var(--accent-teal);
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #6ee7d6;
}
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}
.site-header {
    background-color: var(--secondary-dark);
    border-bottom: 2px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.my-logo {
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.my-logo a { background: unset; -webkit-background-clip: unset; -webkit-text-fill-color: unset; }
.breadcrumb {
    margin: 1rem 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.breadcrumb a { margin: 0 5px; }
.breadcrumb a:first-child { margin-left: 0; }
.main-nav {
    display: flex;
    gap: 2rem;
}
.nav-link {
    font-weight: 600;
    padding: 0.5rem 0;
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-teal);
    transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }
.hamburger {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--accent-teal);
}
@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--secondary-dark);
        width: 100%;
        padding: 2rem;
        transition: left 0.4s ease;
        box-shadow: var(--shadow);
        z-index: 999;
    }
    .main-nav.active { left: 0; }
    .hamburger { display: block; }
    .nav-link { padding: 0.8rem 0; border-bottom: 1px solid var(--border-color); }
}
.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2.5rem;
    margin: 2rem 0;
}
.main-content { grid-column: 1; }
.sidebar {
    grid-column: 2;
    background: var(--secondary-dark);
    padding: 1.5rem;
    border-radius: var(--radius);
    align-self: start;
    position: sticky;
    top: 100px;
    box-shadow: var(--shadow);
}
@media (max-width: 1024px) {
    .content-wrapper { grid-template-columns: 1fr; }
    .sidebar { grid-column: 1; position: static; }
}
article {
    background: var(--secondary-dark);
    padding: 2.5rem;
    border-radius: var(--radius);
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}
h1 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #4a6fa5, #2ab7a9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}
h2 {
    font-size: 2rem;
    color: var(--accent-teal);
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}
h3 {
    font-size: 1.5rem;
    color: var(--accent-blue);
    margin: 1.8rem 0 0.8rem;
}
h4 {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin: 1.5rem 0 0.5rem;
}
p {
    margin-bottom: 1.2rem;
    text-align: justify;
}
strong {
    color: #f8fafc;
    font-weight: 700;
}
.emoji { margin-right: 5px; }
.highlight-box {
    background: linear-gradient(90deg, rgba(42, 183, 169, 0.1) 0%, rgba(74, 111, 165, 0.1) 100%);
    border-left: 4px solid var(--accent-teal);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 var(--radius) var(--radius) 0;
}
.featured-img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: var(--radius);
    margin: 2rem 0;
    border: 3px solid var(--accent-blue);
    box-shadow: var(--shadow);
}
.link-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius);
}
.link-list a {
    background: var(--primary-dark);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.link-list a:hover {
    background: var(--accent-blue);
    border-color: var(--accent-teal);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(42, 183, 169, 0.3);
}
.search-form, .comment-form, .rating-form {
    background: var(--primary-dark);
    padding: 2rem;
    border-radius: var(--radius);
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}
.form-control {
    width: 100%;
    padding: 0.9rem 1.2rem;
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-light);
    font-size: 1rem;
    transition: border 0.3s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--accent-teal);
    box-shadow: 0 0 0 3px rgba(42, 183, 169, 0.2);
}
textarea.form-control { min-height: 150px; resize: vertical; }
.btn {
    display: inline-block;
    background: var(--gradient-main);
    color: white;
    padding: 0.9rem 2rem;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}
.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(42, 183, 169, 0.4);
}
.star-rating {
    display: flex;
    gap: 10px;
    font-size: 2rem;
    color: #555;
    direction: rtl;
}
.star-rating input { display: none; }
.star-rating label {
    cursor: pointer;
    color: #555;
    transition: color 0.2s;
}
.star-rating input:checked ~ label,
.star-rating label:hover,
.star-rating label:hover ~ label {
    color: #ffc107;
}
.site-footer {
    background-color: var(--secondary-dark);
    border-top: 2px solid var(--border-color);
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}
.friend-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius);
}
.friend-link a {
    font-weight: 600;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--primary-dark);
}
.friend-link a:hover {
    background: var(--accent-blue);
    border-color: var(--accent-teal);
}
.copyright {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}
.update-time {
    color: var(--accent-teal);
    font-weight: 600;
    margin: 1rem 0;
    font-size: 0.95rem;
}