:root {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --bg-input: #1a1a2e;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --text-muted: #6c6c80;
    --accent: #0ea5e9;
    --accent-hover: #38bdf8;
    --accent-dim: rgba(14, 165, 233, 0.15);
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --border: #2a2a40;
    --sidebar-width: 260px;
    --radius: 10px;
    --radius-sm: 6px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Layout */
.layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
}

.sidebar__logo {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
}

.logo-icon { font-size: 28px; }
.logo-text {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar__nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.nav-link:hover {
    background: var(--accent-dim);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--accent-dim);
    color: var(--accent);
    font-weight: 600;
}

.nav-icon { font-size: 18px; }

.sidebar__footer {
    padding: 16px;
    border-top: 1px solid var(--border);
}

.user-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 13px;
}

.user-name { color: var(--text-primary); font-weight: 600; }
.user-balance { color: var(--success); }

.logout-link {
    font-size: 13px;
    color: var(--text-muted) !important;
}

.content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 32px;
    min-height: 100vh;
}

/* Auth Layout */
.auth-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    flex-direction: column;
    padding: 20px;
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    width: 100%;
    max-width: 420px;
}

.auth-card h1 {
    text-align: center;
    margin-bottom: 8px;
    font-size: 24px;
}

.auth-card p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 14px;
}

/* Messages */
.messages { margin-bottom: 20px; }
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: 14px;
}
.alert--success { background: rgba(34,197,94,0.15); color: var(--success); border: 1px solid rgba(34,197,94,0.3); }
.alert--error { background: rgba(239,68,68,0.15); color: var(--danger); border: 1px solid rgba(239,68,68,0.3); }
.alert--warning { background: rgba(245,158,11,0.15); color: var(--warning); border: 1px solid rgba(245,158,11,0.3); }
.alert--info { background: var(--accent-dim); color: var(--accent); border: 1px solid rgba(14,165,233,0.3); }

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

.page-header h1 {
    font-size: 24px;
    font-weight: 700;
}

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

.card__title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.stat-card__label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stat-card__value {
    font-size: 28px;
    font-weight: 700;
}

.stat-card__value--accent { color: var(--accent); }
.stat-card__value--success { color: var(--success); }
.stat-card__value--warning { color: var(--warning); }

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

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

.form-input:focus {
    outline: none;
    border-color: var(--accent);
}

textarea.form-input {
    resize: vertical;
    min-height: 80px;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.form-errors {
    color: var(--danger);
    font-size: 13px;
    margin-top: 4px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.2s;
}

.btn--primary {
    background: var(--accent);
    color: #fff;
}
.btn--primary:hover { background: var(--accent-hover); }

.btn--success {
    background: var(--success);
    color: #fff;
}
.btn--success:hover { opacity: 0.9; }

.btn--danger {
    background: var(--danger);
    color: #fff;
}
.btn--danger:hover { opacity: 0.9; }

.btn--outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.btn--outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn--sm {
    padding: 6px 12px;
    font-size: 13px;
}

/* Tables */
.table-wrap {
    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: 14px;
}

th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td { color: var(--text-secondary); }

tr:hover td { color: var(--text-primary); }

/* Status badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge--running { background: rgba(34,197,94,0.15); color: var(--success); }
.badge--stopped { background: rgba(107,114,128,0.15); color: var(--text-muted); }
.badge--error { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge--draft { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge--sending { background: var(--accent-dim); color: var(--accent); }
.badge--done { background: rgba(34,197,94,0.15); color: var(--success); }

/* Bot detail tabs */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
}

.tab-link {
    padding: 10px 18px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
}

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

/* Empty state */
.empty {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty__icon { font-size: 48px; margin-bottom: 16px; }
.empty__text { font-size: 16px; margin-bottom: 16px; }

/* Actions row */
.actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    .content {
        margin-left: 0;
        padding: 16px;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}