:root {
    --bg-primary: #090a0f;
    --bg-sidebar: #0f111a;
    --bg-surface: rgba(20, 24, 39, 0.6);
    --bg-surface-hover: rgba(30, 37, 58, 0.75);
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-purple: #c084fc;
    --color-purple-rgb: 192, 132, 252;
    --color-rose: #f43f5e;
    --color-rose-rgb: 244, 63, 94;
    --color-blue: #38bdf8;
    --color-blue-rgb: 56, 189, 248;
    --color-emerald: #34d399;
    --color-emerald-rgb: 52, 211, 153;
    
    --shadow-sm: 0 2px 8px -1px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 30px -4px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px -10px rgba(0, 0, 0, 0.6);
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-quick: all 0.15s ease-out;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', 'Outfit', sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

/* App Layout Grid */
.app-container {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    height: 100vh;
    position: sticky;
    top: 0;
    z-index: 10;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px 24px 12px;
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-rose), var(--color-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px rgba(244, 63, 94, 0.3);
}

.logo-icon i {
    color: white;
    width: 20px;
    height: 20px;
}

.logo-area h2 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 0.5px;
    background: linear-gradient(to right, #ffffff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 24px;
    flex-grow: 1;
}

.nav-item {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    width: 100%;
    color: var(--text-secondary);
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.95rem;
    text-align: left;
    transition: var(--transition-quick);
}

.nav-item i {
    width: 20px;
    height: 20px;
    transition: var(--transition-quick);
}

.nav-item:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.03);
}

.nav-item.active {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.nav-item.active i {
    color: var(--color-purple);
    filter: drop-shadow(0 0 5px rgba(192, 132, 252, 0.4));
}

.sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sync-status-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0 8px;
}

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

.status-dot.connected {
    background-color: var(--color-emerald);
    box-shadow: 0 0 8px var(--color-emerald);
}

.status-dot.disconnected {
    background-color: var(--color-rose);
    box-shadow: 0 0 8px var(--color-rose);
}

.sync-btn-small {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition-quick);
}

.sync-btn-small:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-hover);
}

.sync-btn-small i {
    width: 14px;
    height: 14px;
}

/* Spin animation for sync button icon */
.spin {
    animation: rotate 1s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Main Content Area */
.main-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    overflow-y: auto;
    height: 100vh;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title .date-today {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.header-title h1 {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 2.2rem;
    letter-spacing: -0.5px;
    margin-top: 4px;
    background: linear-gradient(to right, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 6px 14px 6px 6px;
    border-radius: 30px;
    backdrop-filter: blur(12px);
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-purple), var(--color-blue));
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.user-badge span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Glassmorphism Panel base */
.glass-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.glass-panel:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}

/* Tab Switching Control */
.tab-pane {
    display: none;
    flex-direction: column;
    gap: 32px;
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.tab-pane.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stat Cards Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.stat-card {
    padding: 24px;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.card-purple::before { background-color: var(--color-purple); }
.card-rose::before { background-color: var(--color-rose); }
.card-blue::before { background-color: var(--color-blue); }
.card-emerald::before { background-color: var(--color-emerald); }

.stat-card:hover {
    transform: translateY(-4px);
}

/* Light inner glow on hover */
.card-purple:hover { box-shadow: 0 10px 30px -10px rgba(192, 132, 252, 0.15), var(--shadow-lg); }
.card-rose:hover { box-shadow: 0 10px 30px -10px rgba(244, 63, 94, 0.15), var(--shadow-lg); }
.card-blue:hover { box-shadow: 0 10px 30px -10px rgba(56, 189, 248, 0.15), var(--shadow-lg); }
.card-emerald:hover { box-shadow: 0 10px 30px -10px rgba(52, 211, 153, 0.15), var(--shadow-lg); }

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

.card-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-header i {
    width: 20px;
    height: 20px;
}

.icon-purple { color: var(--color-purple); }
.icon-rose { color: var(--color-rose); }
.icon-blue { color: var(--color-blue); }
.icon-emerald { color: var(--color-emerald); }

.card-value {
    font-size: 2.1rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: 8px;
}

.card-value .unit {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-left: 2px;
}

.card-footer {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Dashboard Charts Grid Layouts */
.dashboard-charts-grid {
    display: grid;
    grid-template-columns: 2fr 1.1fr;
    gap: 24px;
}

.charts-grid-two {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.charts-grid-one {
    display: grid;
    grid-template-columns: 1fr;
}

.chart-panel {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.panel-header {
    display: flex;
    flex-direction: column;
}

.panel-header h3 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1.25rem;
    color: #ffffff;
}

.panel-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.chart-container {
    position: relative;
    height: 320px;
    width: 100%;
}

.chart-container-large {
    position: relative;
    height: 400px;
    width: 100%;
}

.chart-container-donut {
    position: relative;
    height: 320px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Tables and logs styling */
.table-panel {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.table-container {
    overflow-x: auto;
    max-height: 400px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th, .data-table td {
    padding: 14px 16px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    color: var(--text-secondary);
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.01);
}

.data-table td {
    color: var(--text-primary);
    font-weight: 500;
}

.data-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.tables-split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

/* Settings Views */
.settings-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 28px;
}

.settings-panel {
    padding: 32px;
}

.border-bottom {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 24px;
}

.border-top {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.flex-column {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 16px;
    color: #ffffff;
    font-size: 0.95rem;
    transition: var(--transition-quick);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-purple);
    box-shadow: 0 0 0 3px rgba(192, 132, 252, 0.15);
    background: rgba(255, 255, 255, 0.04);
}

.help-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.copy-input-group {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
}

.copy-input-group input {
    background: rgba(255, 255, 255, 0.01);
    color: var(--text-secondary);
    cursor: default;
}

.btn-copy {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0 16px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-quick);
}

.btn-copy:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn-copy i {
    width: 16px;
    height: 16px;
}

/* Button variants */
.btn {
    padding: 12px 24px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid transparent;
    transition: var(--transition-quick);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-purple), var(--color-blue));
    color: #ffffff;
    box-shadow: 0 4px 15px -3px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 8px 25px -3px rgba(56, 189, 248, 0.4);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-hover);
}

.btn-danger {
    background: rgba(244, 63, 94, 0.1);
    border-color: rgba(244, 63, 94, 0.2);
    color: #fda4af;
}

.btn-danger:hover {
    background: rgba(244, 63, 94, 0.16);
    border-color: rgba(244, 63, 94, 0.4);
}

.btn-google {
    background: #ffffff;
    color: #1f2937;
    width: 100%;
}

.btn-google:hover:not(:disabled) {
    background: #f3f4f6;
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

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

/* Connection status box on settings */
.connection-status-box {
    background: rgba(255, 255, 255, 0.015);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.status-indicator-large {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-indicator-large i {
    width: 42px;
    height: 42px;
    color: var(--text-muted);
}

.status-indicator-large i.success-icon {
    color: var(--color-emerald);
    filter: drop-shadow(0 0 10px rgba(52, 211, 153, 0.3));
}

.status-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

.status-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* Danger Zone */
.danger-zone-box {
    background: rgba(244, 63, 94, 0.02);
    border: 1px solid rgba(244, 63, 94, 0.1);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.danger-zone-box h4 {
    color: #fda4af;
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
}

.control-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.control-desc {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.control-desc strong {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.control-desc span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Stateless SaaS Welcome Hero Banner */
.welcome-hero {
    margin-bottom: 24px;
    padding: 36px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(192, 132, 252, 0.1) 0%, rgba(56, 189, 248, 0.05) 100%);
    border: 1px solid rgba(192, 132, 252, 0.2);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px -10px rgba(192, 132, 252, 0.15);
}

.hero-content {
    max-width: 640px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 6px 14px;
    border-radius: 20px;
    background: rgba(192, 132, 252, 0.15);
    color: var(--color-purple);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border: 1px solid rgba(192, 132, 252, 0.3);
}

.welcome-hero h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.3;
}

.welcome-hero p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.hero-actions {
    margin-top: 8px;
}

.btn-google-hero {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    border-radius: 12px;
    background: #ffffff;
    color: #1f2937;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2);
    transition: var(--transition-smooth);
}

.btn-google-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
    background: #f8fafc;
}

/* Time Horizon Selector Buttons */
.btn-horizon {
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-quick);
}

.btn-horizon:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.btn-horizon.active {
    background: rgba(192, 132, 252, 0.15);
    border-color: var(--color-purple);
    color: var(--color-purple);
    font-weight: 600;
}

/* Responsiveness overrides */
@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 1fr;
    }
    .sidebar {
        display: none; /* simple hidden for mobile details for self host focus */
    }
    .settings-grid {
        grid-template-columns: 1fr;
    }
    .dashboard-charts-grid {
        grid-template-columns: 1fr;
    }
    .tables-split-grid {
        grid-template-columns: 1fr;
    }
}