:root {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --bg-hover: #1e2d4a;
    --accent: #e94560;
    --accent-hover: #ff6b81;
    --accent-green: #00d2d3;
    --accent-yellow: #feca57;
    --accent-blue: #54a0ff;
    --text-primary: #eee;
    --text-secondary: #a0a0b8;
    --border: #2a2a4a;
    --shadow: rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 24px 0;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-logo {
    padding: 0 24px 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
}

.sidebar-logo h1 {
    font-size: 20px;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-logo span { font-size: 12px; color: var(--text-secondary); display: block; margin-top: 4px; }

.nav-section { padding: 8px 16px; }
.nav-section-title { font-size: 11px; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 8px; letter-spacing: 1px; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
    font-size: 14px;
    text-decoration: none;
}

.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active { background: var(--accent); color: white; }
.nav-item .icon { font-size: 18px; width: 24px; text-align: center; }

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 24px 32px;
    min-height: 100vh;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}

.page-header h2 {
    font-size: 24px;
    font-weight: 600;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.stat-icon.red { background: rgba(233, 69, 96, 0.15); color: var(--accent); }
.stat-icon.green { background: rgba(0, 210, 211, 0.15); color: var(--accent-green); }
.stat-icon.yellow { background: rgba(254, 202, 87, 0.15); color: var(--accent-yellow); }
.stat-icon.blue { background: rgba(84, 160, 255, 0.15); color: var(--accent-blue); }

.stat-info h3 { font-size: 28px; font-weight: 700; }
.stat-info p { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

/* Cards & Panels */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-header h3 { font-size: 16px; font-weight: 600; }

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-hover); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); }
.btn-success { background: var(--accent-green); color: #111; }
.btn-success:hover { opacity: 0.9; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-danger { background: #c0392b; color: white; }
.btn-danger:hover { background: #e74c3c; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }

.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font);
    transition: border-color 0.2s;
}

.form-control:focus { outline: none; border-color: var(--accent); }
textarea.form-control { min-height: 100px; resize: vertical; }
select.form-control { cursor: pointer; }

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* Tables */
.table-container { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

th { color: var(--text-secondary); font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: 0.5px; }
tr:hover td { background: var(--bg-hover); }

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-draft { background: rgba(160, 160, 184, 0.15); color: var(--text-secondary); }
.badge-scheduled { background: rgba(254, 202, 87, 0.15); color: var(--accent-yellow); }
.badge-published { background: rgba(0, 210, 211, 0.15); color: var(--accent-green); }
.badge-failed { background: rgba(233, 69, 96, 0.15); color: var(--accent); }
.badge-pending { background: rgba(84, 160, 255, 0.15); color: var(--accent-blue); }

/* Platform badges */
.platform-badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
}

.platform-youtube { background: rgba(255, 0, 0, 0.15); color: #ff4444; }
.platform-instagram { background: rgba(225, 48, 108, 0.15); color: #e1306c; }
.platform-facebook { background: rgba(24, 119, 242, 0.15); color: #1877f2; }
.platform-all { background: rgba(255, 255, 255, 0.1); color: var(--text-secondary); }

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active { display: flex; }

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    padding: 28px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 { font-size: 18px; }
.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 24px; cursor: pointer; }
.modal-close:hover { color: var(--accent); }

/* Content grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.content-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    transition: border-color 0.2s;
}

.content-card:hover { border-color: var(--accent); }

.content-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.content-card-title {
    font-size: 15px;
    font-weight: 600;
    flex: 1;
    margin-right: 12px;
    line-height: 1.4;
}

.content-card-body { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 12px; }
.content-card-footer { display: flex; gap: 8px; flex-wrap: wrap; }

/* Platform connect cards */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.platform-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
}

.platform-card .icon { font-size: 48px; margin-bottom: 12px; }
.platform-card h4 { font-size: 18px; margin-bottom: 8px; }
.platform-card p { font-size: 13px; color: var(--text-secondary); margin-bottom: 16px; }
.platform-card .status { font-size: 13px; margin-top: 12px; }
.platform-card .connected { color: var(--accent-green); }
.platform-card .disconnected { color: var(--accent); }

/* Results area */
.results-area {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    min-height: 200px;
    max-height: 500px;
    overflow-y: auto;
}

.result-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
}

.result-item h4 { font-size: 15px; margin-bottom: 8px; color: var(--accent); }
.result-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }
.result-item .meta { font-size: 12px; color: var(--text-secondary); margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--border); }

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 300;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    color: white;
}

.loading-overlay.active { display: flex; }
.loading-overlay .spinner { width: 40px; height: 40px; border-width: 3px; }

/* Toast notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 400;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 20px;
    min-width: 280px;
    box-shadow: 0 8px 24px var(--shadow);
    animation: slideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.success { border-left: 3px solid var(--accent-green); }
.toast.error { border-left: 3px solid var(--accent); }
.toast.info { border-left: 3px solid var(--accent-blue); }

@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Section pages hidden by default */
.page-section { display: none; }
.page-section.active { display: block; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; padding: 16px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .content-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}

/* Tab system */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.tab {
    padding: 10px 20px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 14px;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state .icon { font-size: 48px; margin-bottom: 16px; }
.empty-state h3 { font-size: 18px; margin-bottom: 8px; color: var(--text-primary); }
.empty-state p { font-size: 14px; margin-bottom: 20px; }

/* Hamburger for mobile */
.hamburger {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 150;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .hamburger { display: block; }
}

/* Action buttons */
.action-btns {
    display: flex;
    gap: 6px;
}

.action-btn {
    padding: 4px 8px;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    font-size: 16px;
    transition: all 0.2s;
}

.action-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.action-btn.delete:hover { color: var(--accent); }