/* ========== DESIGN TOKENS ========== */
:root {
    --ink: #0a0f1a;
    --slate: #3d4663;
    --mist: #8892ab;
    --cloud: #e8ecf4;
    --cloud-light: #f3f5fa;
    --white: #ffffff;
    --aqua: #00d4aa;
    --aqua-dim: #00b894;
    --aqua-glow: rgba(0, 212, 170, 0.12);
    --aqua-glow-strong: rgba(0, 212, 170, 0.2);
    --deep: #0d1420;
    --red: #ef4444;
    --red-bg: #fef2f2;
    --yellow: #f59e0b;
    --yellow-bg: #fffbeb;
    --blue: #3b82f6;
    --blue-bg: #eff6ff;
    --green: #10b981;
    --green-bg: #ecfdf5;

    --sidebar-width: 260px;
    --radius: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --transition: 0.15s ease;
}

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

body {
    font-family: 'DM Sans', sans-serif;
    color: var(--ink);
    background: var(--cloud-light);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Space Grotesk', sans-serif;
}

/* ========== AUTH SCREEN ========== */
.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--deep) 0%, #1a2332 50%, var(--deep) 100%);
    position: relative;
    overflow: hidden;
}

.auth-screen::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--aqua-glow-strong) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    pointer-events: none;
}

.auth-screen::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    pointer-events: none;
}

.auth-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    width: 420px;
    max-width: 90vw;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

.auth-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 2rem;
    color: var(--ink);
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: 4px;
}

.auth-logo span { color: var(--aqua); }

.auth-tagline {
    text-align: center;
    color: var(--mist);
    font-size: 0.9rem;
    margin-bottom: 36px;
}

.auth-tabs {
    display: flex;
    gap: 4px;
    background: var(--cloud-light);
    border-radius: 8px;
    padding: 4px;
    margin-bottom: 24px;
}

.auth-tab {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    border-radius: 6px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--mist);
    cursor: pointer;
    transition: var(--transition);
}

.auth-tab.active {
    background: var(--white);
    color: var(--ink);
    box-shadow: var(--shadow-sm);
}

.auth-fields {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.auth-error {
    color: var(--red);
    font-size: 0.85rem;
    text-align: center;
    margin-top: 12px;
    min-height: 20px;
}

/* ========== INPUTS ========== */
.input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--cloud);
    border-radius: 8px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.92rem;
    color: var(--ink);
    background: var(--white);
    transition: var(--transition);
    outline: none;
}

.input:focus {
    border-color: var(--aqua);
    box-shadow: 0 0 0 3px var(--aqua-glow);
}

.input::placeholder { color: var(--mist); }

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--slate);
}

select.input {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238892ab' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
}

/* ========== BUTTONS ========== */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.btn-primary {
    background: var(--aqua);
    color: var(--deep);
}

.btn-primary:hover { background: var(--aqua-dim); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
    background: var(--white);
    color: var(--slate);
    border: 1.5px solid var(--cloud);
}

.btn-secondary:hover { border-color: var(--mist); color: var(--ink); }

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

.btn-danger:hover { background: #fee2e2; }

.btn-ghost {
    background: transparent;
    color: var(--mist);
    padding: 8px 12px;
}

.btn-ghost:hover { color: var(--ink); background: var(--cloud-light); }

.btn-sm { padding: 6px 14px; font-size: 0.82rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-icon {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--mist);
    border-radius: 6px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.btn-icon:hover { color: var(--ink); background: var(--cloud-light); }

/* ========== SIDEBAR ========== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--white);
    border-right: 1px solid var(--cloud);
    display: flex;
    flex-direction: column;
    z-index: 50;
}

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

.sidebar-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--ink);
    letter-spacing: -0.02em;
}

.sidebar-logo span { color: var(--aqua); }

.ai-badge {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--aqua-dim);
    background: var(--aqua-glow);
    border: 1px solid rgba(0, 212, 170, 0.2);
    padding: 3px 8px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--slate);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-item:hover { background: var(--cloud-light); color: var(--ink); }

.nav-item.active {
    background: var(--aqua-glow);
    color: var(--aqua-dim);
    font-weight: 600;
}

.nav-item svg { flex-shrink: 0; }

.alert-badge {
    background: var(--red);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 100px;
    margin-left: auto;
}

.sidebar-footer {
    padding: 16px 16px;
    border-top: 1px solid var(--cloud);
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--aqua-glow);
    color: var(--aqua-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.user-details { min-width: 0; }

.user-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: 0.75rem;
    color: var(--mist);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========== MAIN CONTENT ========== */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    padding: 32px;
}

/* ========== PAGE HEADER ========== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    gap: 16px;
}

.page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.page-header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* ========== CARDS ========== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--cloud);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--cloud);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.card-body { padding: 24px; }
.card-body.no-pad { padding: 0; }

/* ========== STAT CARDS ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

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

.stat-label {
    font-size: 0.82rem;
    color: var(--mist);
    font-weight: 500;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.stat-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.stat-sub {
    font-size: 0.78rem;
    color: var(--mist);
    margin-top: 4px;
}

/* ========== AI HEALTH PANEL ========== */
.ai-health {
    background: linear-gradient(135deg, var(--deep) 0%, #1a2838 100%);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
}

.ai-health::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--aqua-glow-strong) 0%, transparent 70%);
    top: -150px;
    right: -100px;
    pointer-events: none;
}

.ai-health-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    position: relative;
}

.ai-health-header .ai-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--aqua-glow);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-health-header h3 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
}

.ai-health-header .ai-live {
    font-size: 0.72rem;
    color: var(--aqua);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
}

.ai-live-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--aqua);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.ai-health-body {
    color: var(--cloud);
    font-size: 0.92rem;
    line-height: 1.7;
    position: relative;
}

.ai-health-body.loading {
    color: var(--mist);
    display: flex;
    align-items: center;
    gap: 10px;
}

.ai-health-status {
    display: flex;
    gap: 20px;
    margin-top: 16px;
    position: relative;
}

.ai-status-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--mist);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.green { background: var(--green); }
.status-dot.yellow { background: var(--yellow); }
.status-dot.red { background: var(--red); }

/* ========== TABLES ========== */
.table-wrap { overflow-x: auto; }

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

th {
    text-align: left;
    padding: 12px 20px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--mist);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--cloud);
    background: var(--cloud-light);
}

td {
    padding: 14px 20px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--cloud);
    color: var(--slate);
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(0,0,0,0.01); }

/* ========== BADGES ========== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 600;
}

.badge-green { background: var(--green-bg); color: var(--green); }
.badge-yellow { background: var(--yellow-bg); color: var(--yellow); }
.badge-red { background: var(--red-bg); color: var(--red); }
.badge-blue { background: var(--blue-bg); color: var(--blue); }
.badge-gray { background: var(--cloud-light); color: var(--mist); }

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* ========== PIPELINE CARD ========== */
.pipeline-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pipeline-card {
    background: var(--white);
    border: 1px solid var(--cloud);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 20px;
}

.pipeline-card:hover {
    border-color: var(--aqua);
    box-shadow: 0 0 0 3px var(--aqua-glow);
}

.pipeline-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.pipeline-icon.google { background: #fff3e0; color: #f57c00; }
.pipeline-icon.meta { background: #e3f2fd; color: #1565c0; }

.pipeline-info { flex: 1; min-width: 0; }

.pipeline-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--ink);
    margin-bottom: 4px;
}

.pipeline-meta {
    font-size: 0.82rem;
    color: var(--mist);
    display: flex;
    align-items: center;
    gap: 12px;
}

.pipeline-stats {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
}

.pipeline-stat {
    text-align: right;
}

.pipeline-stat-value {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--ink);
}

.pipeline-stat-label {
    font-size: 0.72rem;
    color: var(--mist);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ========== CONNECTOR CARD ========== */
.connector-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.connector-card {
    background: var(--white);
    border: 1px solid var(--cloud);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.connector-card:hover { border-color: var(--aqua); }

.connector-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}

.connector-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.connector-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--ink);
}

.connector-platform {
    font-size: 0.8rem;
    color: var(--mist);
}

.connector-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.connector-detail {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}

.connector-detail-label { color: var(--mist); }
.connector-detail-value { color: var(--ink); font-weight: 500; }

.connector-actions {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--cloud);
    display: flex;
    gap: 8px;
}

/* ========== ALERT CARDS ========== */
.alert-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.alert-card {
    background: var(--white);
    border: 1px solid var(--cloud);
    border-radius: var(--radius);
    padding: 18px 20px;
    display: flex;
    gap: 14px;
    transition: var(--transition);
}

.alert-card:hover { border-color: var(--mist); }

.alert-severity {
    width: 4px;
    border-radius: 2px;
    flex-shrink: 0;
}

.alert-severity.critical { background: var(--red); }
.alert-severity.warning { background: var(--yellow); }
.alert-severity.info { background: var(--blue); }

.alert-content { flex: 1; min-width: 0; }

.alert-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--ink);
    margin-bottom: 4px;
}

.alert-desc {
    font-size: 0.85rem;
    color: var(--slate);
    line-height: 1.5;
    margin-bottom: 8px;
}

.alert-footer {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.78rem;
    color: var(--mist);
}

.alert-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-shrink: 0;
    align-items: flex-end;
}

.ai-explain-text {
    background: var(--aqua-glow);
    border: 1px solid rgba(0, 212, 170, 0.15);
    border-radius: 8px;
    padding: 12px 16px;
    margin-top: 10px;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--ink);
}

.ai-explain-text .ai-tag {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--aqua-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

/* ========== DETAIL PAGE ========== */
.detail-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.back-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--mist);
    padding: 8px;
    border-radius: 8px;
    display: flex;
    transition: var(--transition);
}

.back-btn:hover { color: var(--ink); background: var(--cloud-light); }

.detail-title h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.detail-subtitle {
    font-size: 0.85rem;
    color: var(--mist);
    margin-top: 2px;
}

.detail-actions {
    margin-left: auto;
    display: flex;
    gap: 8px;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

/* ========== EMPTY STATES ========== */
.empty-state {
    padding: 60px 40px;
    text-align: center;
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--ink);
}

.empty-state p {
    color: var(--mist);
    font-size: 0.9rem;
    margin-bottom: 24px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* ========== MODAL ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 15, 26, 0.5);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal {
    background: var(--white);
    border-radius: var(--radius-lg);
    width: 520px;
    max-width: 90vw;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--cloud);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

#modal-body { padding: 24px; }

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--slate);
    margin-bottom: 6px;
}

.form-hint {
    font-size: 0.78rem;
    color: var(--mist);
    margin-top: 4px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 24px;
}

/* ========== LOADING ========== */
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--cloud);
    border-top-color: var(--aqua);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}

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

.loading-text {
    color: var(--mist);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ========== TIMELINE ========== */
.timeline {
    padding: 0 24px 24px;
}

.timeline-item {
    display: flex;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid var(--cloud);
}

.timeline-item:last-child { border-bottom: none; }

.timeline-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cloud);
    margin-top: 6px;
    flex-shrink: 0;
}

.timeline-dot.sync_completed { background: var(--green); }
.timeline-dot.sync_failed { background: var(--red); }
.timeline-dot.sync_started { background: var(--blue); }
.timeline-dot.pipeline_created { background: var(--aqua); }
.timeline-dot.pipeline_paused { background: var(--yellow); }
.timeline-dot.pipeline_resumed { background: var(--green); }

.timeline-content { flex: 1; }

.timeline-event {
    font-size: 0.85rem;
    color: var(--ink);
    font-weight: 500;
}

.timeline-time {
    font-size: 0.78rem;
    color: var(--mist);
    margin-top: 2px;
}

/* ========== PLATFORM ICONS ========== */
.platform-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
}

.platform-icon.google_ads { background: #fff3e0; color: #f57c00; }
.platform-icon.meta_ads { background: #e3f2fd; color: #1565c0; }
.platform-icon.bigquery { background: #e8f5e9; color: #2e7d32; }

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-grid { grid-template-columns: 1fr; }
    .connector-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .pipeline-card { flex-direction: column; align-items: flex-start; }
    .pipeline-stats { flex-direction: row; width: 100%; }
}