/* Phase 1 Styles: Operational UI */

:root {
    --bg-color: #F8FAFC;
    --card-bg: #ffffff;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --border-color: #E2E8F0;
    --nav-bg: #ffffff;
    --nav-text: #64748B;
    --primary-color: #0077b6;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
}

/* Global Nav */
.global-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0 24px;
    height: 64px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}
.nav-logo {
    height: 32px;
    margin-right: 12px;
}
.nav-links {
    display: flex;
    gap: 8px;
}
.nav-link {
    color: var(--nav-text);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
    transition: background-color 0.2s, color 0.2s;
}
.nav-link:hover {
    background-color: #f1f5f9;
    color: var(--text-primary);
}
.nav-link.active {
    background-color: rgba(0, 119, 182, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}
.nav-icon {
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
    max-width: 20px;
    max-height: 20px;
    flex: 0 0 20px;
    fill: currentColor;
    display: block;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}
.section-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* KPI Cards & Funnels */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    padding: 0 24px 24px 24px;
}
.kpi-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
    text-align: left;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s, transform 0.2s;
    position: relative;
    overflow: hidden;
}
.kpi-card:hover {
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    transform: translateY(-2px);
}
/* Subtle top border accent for semantics */
.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background-color: var(--primary-color);
}
.kpi-card.warning::before { background-color: #f59f00; }
.kpi-card.danger::before { background-color: #e03131; }
.kpi-card.success::before { background-color: #2b8a3e; }

.kpi-header {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}
.kpi-icon {
    width: 22px;
    height: 22px;
    min-width: 22px;
    min-height: 22px;
    max-width: 22px;
    max-height: 22px;
    flex: 0 0 22px;
    fill: currentColor;
    display: block;
}
.kpi-card.warning .kpi-icon { color: #f59f00; }
.kpi-card.danger .kpi-icon { color: #e03131; }
.kpi-card.success .kpi-icon { color: #2b8a3e; }

.kpi-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.kpi-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    margin-bottom: 4px;
}
.kpi-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Funnel Container */
.funnel-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding: 0 24px 24px 24px;
    width: 100%;
}
.funnel-stage {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.funnel-stage .kpi-card {
    width: 100%;
    margin-bottom: 0;
}
.funnel-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #cbd5e1;
    min-width: 32px;
}
.funnel-connector svg {
    width: 24px;
    height: 24px;
    min-width: 24px;
    min-height: 24px;
    max-width: 24px;
    max-height: 24px;
    flex: 0 0 24px;
    fill: currentColor;
    display: block;
}
.funnel-rate {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Conversion Insights */
.conversion-insights-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    margin: 0 24px 24px 24px;
}
.conversion-insights-card h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    font-weight: 600;
    margin-top: 0;
}
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}
.insight-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
    background: #f8fafc;
    border-radius: 8px;
    border: 1px solid #f1f5f9;
}
.insight-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.insight-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Visibility Utilities */
.desktop-only { display: block; }
.mobile-only { display: none; }

/* Data Tables */
.table-section {
    padding: 0 24px;
}
.table-responsive {
    overflow-x: auto;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin: 0 24px 24px 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}
.data-table th, .data-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}
.data-table th {
    background-color: #f8fafc;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}
.data-table tbody tr:hover {
    background-color: #f8fafc;
}

/* Forms */
.form-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin: 0 24px 24px 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group.full-width {
    grid-column: 1 / -1;
}
.form-group label {
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.85rem;
}
input[type="text"], input[type="number"], input[type="date"], input[type="tel"], select, textarea, .filter-input, .filter-select {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: #fff;
    transition: all 0.2s;
}
input[type="text"]:focus, input[type="number"]:focus, input[type="date"]:focus, input[type="tel"]:focus, select:focus, textarea:focus, .filter-input:focus, .filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
input[readonly].readonly {
    background: #e9ecef;
    color: #495057;
    cursor: not-allowed;
}
fieldset {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 24px;
}
legend {
    font-weight: bold;
    color: var(--primary-color);
    padding: 0 8px;
}
.va-column {
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 4px;
}
.va-column h4 {
    margin: 0 0 10px 0;
    color: var(--text-secondary);
    text-align: center;
}
.radio-group, .checkbox-grid {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.radio-group label, .checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.95rem;
}
.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}
.form-error {
    background: #ffe3e3;
    color: #e03131;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-weight: 500;
}

/* Event Detail */
.detail-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin: 0 20px 20px 20px;
}
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 12px;
    font-size: 0.95rem;
}
.detail-grid .full-width {
    grid-column: 1 / -1;
}

/* Filters */
.filters-bar {
    display: flex;
    gap: 12px;
    margin: 0 20px 16px 20px;
    flex-wrap: wrap;
}
.filter-input {
    flex-grow: 1;
    min-width: 200px;
}

/* Utility */
.text-center { text-align: center; }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }

/* Dashboard Separators */
.dashboard-section-divider {
    margin-top: 32px;
    margin-bottom: 24px;
}
.dashboard-section-divider h3 {
    font-size: 14px;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    font-weight: 600;
}
.dashboard-section-divider hr {
    border: none;
    border-top: 1px solid #e9ecef;
    margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    /* Mobile Tab Bar */
    .global-nav { padding: 0 16px; justify-content: center; }
    .nav-brand { width: 100%; justify-content: center; }
    .nav-links {
        position: fixed;
        bottom: 0; left: 0; right: 0;
        background: var(--nav-bg);
        border-top: 1px solid var(--border-color);
        box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
        padding: 8px 8px calc(8px + env(safe-area-inset-bottom, 0px));
        display: flex;
        justify-content: space-around;
        gap: 0;
        z-index: 1000;
    }
    .nav-link {
        flex-direction: column;
        padding: 4px;
        font-size: 0.7rem;
        border-radius: 8px;
        gap: 4px;
        flex: 1;
        text-align: center;
    }
    .nav-link:hover { background: transparent; color: var(--text-primary); }
    .nav-link.active { background: transparent; color: var(--primary-color); }
    
    .screen { padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px)) !important; }

    /* Funnel Stacking */
    .funnel-container {
        flex-direction: column;
        align-items: stretch;
    }
    .funnel-connector {
        padding: 8px 0;
    }
    .funnel-connector svg {
        transform: rotate(90deg);
    }

    .form-grid { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: 1fr; }
    .section-header { flex-direction: column; align-items: flex-start; gap: 10px; }

    /* Visibility Utilities */
    .desktop-only { display: none !important; }
    .mobile-only { display: flex !important; flex-direction: column; gap: 16px; padding: 0 24px 24px 24px; }

    /* True Mobile Event Cards */
    .mobile-event-card {
        background: var(--surface-color);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 16px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        display: flex;
        flex-direction: column;
    }
    .mobile-event-card .card-title {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 4px;
    }
    .mobile-event-card .card-meta {
        font-size: 0.85rem;
        color: var(--text-secondary);
        margin-bottom: 16px;
    }
    .mobile-event-card .card-stats {
        display: flex;
        justify-content: space-between;
        margin-bottom: 16px;
    }
    .mobile-event-card .stat-item {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .mobile-event-card .stat-label {
        font-size: 0.7rem;
        text-transform: uppercase;
        font-weight: 600;
        color: var(--text-secondary);
        margin-bottom: 4px;
        letter-spacing: 0.5px;
    }
    .mobile-event-card .stat-value {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-primary);
    }
    .mobile-event-card .card-action {
        border-top: 1px solid #f1f5f9;
        padding-top: 16px;
        display: flex;
        justify-content: center;
    }
    .mobile-event-card .card-action button {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
    }
    
    .mobile-data-card {
        background: var(--surface-color);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 16px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        display: flex;
        flex-direction: column;
        margin-bottom: 12px;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    .mobile-data-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        border-bottom: 1px solid #f1f5f9;
        padding-bottom: 12px;
        margin-bottom: 12px;
        font-size: 1.1rem;
    }
    .mobile-data-body div {
        margin-bottom: 6px;
        font-size: 0.95rem;
        color: var(--text-secondary);
    }
    .mobile-data-body strong {
        color: var(--text-primary);
        font-weight: 600;
        margin-right: 4px;
    }
    .mobile-data-actions button {
        width: 100%;
        margin-top: 8px;
    }
}