:root { 
    --bg: #ffffff; --text: #333; --border: #eee; --primary: #d12030; 
    --input-bg: #f8f9fa; --overlay-color: rgba(0,0,0,0.6); 
    --card-bg: #ffffff; --dark-panel: #1a1a1a; --panel-text: #ffffff;
}
.dark-mode { 
    --bg: #121212; --text: #eee; --border: #2a2a2a; 
    --input-bg: #1e1e1e; --card-bg: #1e1e1e; 
}
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Hind Siliguri', sans-serif; }
body { background: var(--bg); color: var(--text); transition: 0.3s; display: flex; flex-direction: column; min-height: 100vh; }

/* --- Header & Layout --- */
header { background: var(--dark-panel); color: var(--panel-text); padding: 10px 3%; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,0.3); }
.h-wrap { max-width: 1400px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.logo { font-size: 24px; font-weight: 700; color: var(--primary); text-decoration: none; }
.desktop-nav { display: flex; gap: 20px; }
.desktop-nav a { text-decoration: none; color: var(--panel-text); font-weight: 600; opacity: 0.9; }
.search-area { flex-grow: 1; max-width: 300px; position: relative; display: flex; }
.search-area input { width: 100%; padding: 8px 15px; border-radius: 20px; border: none; background: #333; color: #fff; outline: none; }
.search-area button { position: absolute; right: 10px; top: 8px; background: none; border: none; color: #bbb; cursor: pointer; }
.header-icons { display: flex; gap: 15px; align-items: center; }
.header-icons i { cursor: pointer; font-size: 20px; color: var(--panel-text); }
.header-user-pic { width: 30px; height: 30px; border-radius: 50%; border: 1px solid #444; }

/* --- Sidebar & Drawer --- */
.side-drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: var(--dark-panel); transition: 0.3s; z-index: 2000; padding: 20px; box-shadow: 2px 0 10px rgba(0,0,0,0.5); color: var(--panel-text); }
.side-drawer.active { left: 0; }
.side-drawer ul { list-style: none; margin-top: 20px; }
.side-drawer ul li { padding: 12px 0; border-bottom: 1px solid #2a2a2a; }
.side-drawer ul li a { text-decoration: none; color: var(--panel-text); display: block; }
#overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: var(--overlay-color); display: none; z-index: 1500; }
#overlay.active { display: block; }

/* --- Post Cards --- */
.main-container { max-width: 1400px; margin: 15px auto; padding: 0 3%; display: flex; gap: 25px; flex: 1; }
.content-area { flex: 1; min-width: 0; }
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 15px; }
.post-img { width: 100%; height: 160px; object-fit: cover; }
.post-info { padding: 12px; }
.post-title { font-size: 16px; margin-bottom: 8px; height: 45px; overflow: hidden; font-weight: 600; }
.post-title a { text-decoration: none; color: var(--text); }
.post-meta-info { display: flex; justify-content: space-between; font-size: 11px; color: #777; border-top: 1px solid var(--border); padding-top: 5px; }

/* --- Sidebar --- */
.sidebar { width: 340px; flex-shrink: 0; }
.sidebar-title { border-left: 4px solid var(--primary); padding-left: 10px; margin-bottom: 15px; }
.sidebar-item { margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); display: flex; gap: 10px; }
.sidebar-thumb { width: 70px; height: 50px; object-fit: cover; border-radius: 4px; }
.sidebar-text { font-size: 14px; line-height: 1.2; }
.sidebar-text a { text-decoration: none; color: var(--text); }

/* --- Modal & Inputs --- */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: var(--overlay-color); display: none; z-index: 5000; align-items: center; justify-content: center; backdrop-filter: blur(4px); }
.modal-overlay.active { display: flex; }
.modal-content { background: var(--card-bg); width: 90%; max-width: 380px; padding: 30px; border-radius: 15px; position: relative; color: var(--text); }
.modal-input { width: 100%; padding: 12px; margin-bottom: 15px; border: 1px solid var(--border); border-radius: 8px; background: var(--input-bg); color: var(--text); }
.login-submit-btn { width: 100%; padding: 12px; background: var(--primary); color: #fff; border: none; border-radius: 8px; cursor: pointer; font-weight: 700; font-size: 16px; }

/* --- Footer --- */
.site-footer { background: var(--dark-panel); color: #bbb; padding: 40px 3% 20px; margin-top: 30px; border-top: 4px solid var(--primary); }
.footer-wrap { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-bottom { text-align: center; margin-top: 40px; padding-top: 20px; border-top: 1px solid #333; font-size: 13px; }

/* --- Mobile Responsive --- */
@media (max-width: 900px) {
    .desktop-nav { display: none; }
    .main-container { display: block; padding: 0 10px; }
    .sidebar { width: 100%; margin-top: 20px; }
    .post-grid { grid-template-columns: repeat(2, 1fr); }
    .mobile { display: block; }
}
.mobile { display: none; }
@media screen and (max-width: 768px) { .mobile { display: block; } }