@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --bg-app: #0F172A;
    --bg-card: #111827;
    --bg-card-hover: #1E293B;
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --accent: #3B82F6;
    --border: #1E293B;
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius-md: 16px;
    --radius-pill: 9999px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, sans-serif;
}

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 15px;
}

.container {
    max-width: 1500px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 260px 1fr 350px;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    padding: 20px;
    border-right: 1px solid var(--border);
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.logo {
    font-size: 24px;
    font-weight: 900;
    color: var(--accent);
    padding: 10px 20px;
}

.nav-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sidebar .nav-links a {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 20px;
    color: #FFFFFF !important;
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    border-radius: var(--radius-pill);
    transition: background-color 0.2s ease;
}

.sidebar .nav-links a:hover {
    background-color: var(--bg-card-hover);
}

.sidebar .nav-links a.active {
    color: var(--accent) !important;
    background-color: rgba(59, 130, 246, 0.1);
}

/* Composer */
.composer {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 15px;
    border-bottom: 1px solid var(--border);
}

.composer-top {
    display: flex;
    gap: 15px;
}

.avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}

.composer textarea {
    flex-grow: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 18px;
    font-family: inherit;
    resize: none;
    outline: none;
    padding-top: 10px;
    min-height: 44px;
}

.composer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 10px;
}

/* Posts */
.post {
    display: flex;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.post-right {
    flex-grow: 1;
}

.post-header {
    display: flex;
    gap: 5px;
    align-items: center;
    font-size: 14px;
    color: var(--text-secondary);
}

.post-header strong {
    color: var(--text-primary);
}

/* Right Sidebar */
.discovery {
    padding: 20px;
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.widget {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
}

.widget h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

/* Responsive */
@media (max-width: 1200px) {
    .container { grid-template-columns: 80px 1fr; }
    .discovery { display: none; }
    .sidebar .nav-links a span { display: none; }
}

@media (max-width: 600px) {
    .container { grid-template-columns: 1fr; }
    .sidebar { display: none; }
}