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

:root {
    --bg-primary: #111b21;
    --bg-secondary: #1f2c34;
    --bg-card: #2a3942;
    --accent: #00a884;
    --accent-hover: #00c49a;
    --danger: #ea4335;
    --danger-hover: #ff5544;
    --text-primary: #e9edef;
    --text-secondary: #8696a0;
    --border: #3b4a54;
}

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

.hidden { display: none !important; }

/* ── Login ─────────────────────────────────────────── */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 380px;
    border: 1px solid var(--border);
    text-align: center;
}

.login-card h1 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--accent);
}

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

.login-card .form-group {
    text-align: left;
    margin-bottom: 16px;
}

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

.login-card input {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

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

.login-error {
    color: var(--danger);
    font-size: 13px;
    margin-bottom: 12px;
}

.btn-block {
    width: 100%;
    padding: 12px;
    font-size: 15px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 20px;
    font-weight: 600;
}

.badge {
    background: var(--accent);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    border: 1px solid var(--border);
}

.stat-card h3 {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card p {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.bots-section, .logs-section {
    margin-bottom: 24px;
}

.bots-list {
    display: grid;
    gap: 12px;
}

.bot-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.2s;
}

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

.bot-info {
    flex: 1;
}

.bot-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.bot-detail {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 2px;
}

.bot-status {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}

.bot-status.online { background: #25d366; }
.bot-status.offline { background: var(--danger); }

.bot-actions {
    display: flex;
    gap: 8px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

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

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: var(--danger-hover);
}

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

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.logs-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
    line-height: 1.6;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--text-secondary);
}

.log-controls {
    display: flex;
    gap: 8px;
}

.btn.active {
    background: var(--accent);
    color: white;
}

.loading {
    color: var(--text-secondary);
    text-align: center;
    padding: 40px;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 200;
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background: var(--bg-card);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    border: 1px solid var(--border);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 16px;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

.modal-body {
    padding: 20px;
}

.modal-body .form-group {
    margin-bottom: 16px;
}

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

.modal-body input, .modal-body textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

.modal-body textarea {
    min-height: 80px;
    resize: vertical;
    font-family: inherit;
}

.modal-body input:focus, .modal-body textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: 16px;
}

.modal-qr {
    max-width: 400px;
}

.qr-body {
    text-align: center;
}

.qr-container {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    display: inline-block;
}

.qr-container img {
    display: block;
    max-width: 280px;
    margin: 0 auto;
}

.qr-loading {
    width: 280px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
    font-size: 14px;
}

.qr-instructions {
    color: var(--text-secondary);
    font-size: 12px;
    margin-bottom: 12px;
    line-height: 1.5;
}

.qr-status {
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    display: inline-block;
}

.qr-status.esperando {
    background: rgba(0, 168, 132, 0.15);
    color: var(--accent);
}

.qr-status.conectado {
    background: rgba(37, 211, 102, 0.15);
    color: #25d366;
}

.qr-status.expirado {
    background: rgba(234, 67, 53, 0.15);
    color: var(--danger);
}

.btn-qr {
    background: #25d366;
    color: white;
}

.btn-qr:hover {
    background: #22c55e;
}

.btn-qr-pendiente {
    background: #f59e0b;
    color: white;
}

.btn-qr-pendiente:hover {
    background: #d97706;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 8px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .bot-card {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .bot-actions {
        width: 100%;
    }

    .bot-actions .btn {
        flex: 1;
    }

    .section-header {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
}