/* ============================================================
   Open Lightning — Shared Theme
   Light, corporate/professional (Stripe/Linear/Notion style)
   ============================================================ */

/* ----------------------------------------------------------
   CSS Custom Properties
   ---------------------------------------------------------- */
:root {
    --color-primary:       #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-bg:            #f8fafc;
    --color-surface:       #ffffff;
    --color-text:          #1e293b;
    --color-muted:         #64748b;
    --color-border:        #e2e8f0;
    --color-success:       #16a34a;
    --color-warning:       #d97706;
    --color-danger:        #dc2626;
    --shadow-sm:           0 1px 2px rgba(0,0,0,0.05);
    --shadow-md:           0 4px 6px -1px rgba(0,0,0,0.1);
    --radius:              8px;
    --font:                -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

/* ----------------------------------------------------------
   Reset & Base
   ---------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    background: var(--color-bg);
    font-family: var(--font);
    color: var(--color-text);
    margin: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 8px;
    font-weight: 600;
    line-height: 1.3;
}

/* ----------------------------------------------------------
   Layout
   ---------------------------------------------------------- */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.page-header {
    padding: 32px 0;
    border-bottom: 1px solid var(--color-border);
}

/* ----------------------------------------------------------
   Navigation
   ---------------------------------------------------------- */
.main-nav {
    position: sticky;
    top: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 60px;
}

.nav-logo {
    font-weight: 700;
    font-size: 18px;
    color: var(--color-text);
    text-decoration: none;
}

.nav-logo:hover {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: 4px;
}

.nav-links a {
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    color: var(--color-muted);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.15s, background 0.15s;
}

.nav-links a:hover {
    color: var(--color-text);
    background: #f1f5f9;
}

.nav-links a.active {
    color: var(--color-primary);
    background: #eff6ff;
}

.nav-toggle {
    display: none;
}

/* ----------------------------------------------------------
   Hero Section
   ---------------------------------------------------------- */
.hero {
    padding: 48px 0;
    text-align: center;
}

.hero h1 {
    font-size: 36px;
    font-weight: 700;
    margin: 0 0 12px;
}

.hero .subtitle {
    font-size: 18px;
    color: var(--color-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ----------------------------------------------------------
   KPI Cards
   ---------------------------------------------------------- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.kpi-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.kpi-card .kpi-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
}

.kpi-card .kpi-label {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ----------------------------------------------------------
   Cards
   ---------------------------------------------------------- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.card-header {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

/* ----------------------------------------------------------
   Badges
   ---------------------------------------------------------- */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: capitalize;
}

.badge-commercial  { background: #dbeafe; color: #1e40af; }
.badge-community   { background: #dcfce7; color: #166534; }
.badge-government  { background: #f3e8ff; color: #6b21a8; }
.badge-academic    { background: #fef3c7; color: #92400e; }
.badge-hybrid      { background: #ccfbf1; color: #115e59; }
.badge-active      { background: #dcfce7; color: #166534; }
.badge-inactive    { background: #f1f5f9; color: #64748b; }
.badge-limited     { background: #fef3c7; color: #92400e; }
.badge-merged      { background: #f1f5f9; color: #64748b; }

/* ----------------------------------------------------------
   Sidebar + Main Layout
   ---------------------------------------------------------- */
.layout-sidebar {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    margin-top: 24px;
}

.sidebar {
    position: sticky;
    top: 80px;
    align-self: start;
}

.sidebar .meta-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
}

.sidebar .meta-item {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
}

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

.sidebar .meta-label {
    color: var(--color-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ----------------------------------------------------------
   Scroll-spy Sidebar Nav
   ---------------------------------------------------------- */
.scroll-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.scroll-nav li a {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    color: var(--color-muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color 0.15s, border-left-color 0.15s;
}

.scroll-nav li a:hover {
    color: var(--color-text);
}

.scroll-nav li a.active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    font-weight: 500;
}

/* ----------------------------------------------------------
   Tables (DataTables integration)
   ---------------------------------------------------------- */
table.dataTable {
    width: 100% !important;
    border-collapse: collapse;
}

table.dataTable thead th,
table.dataTable thead td {
    text-align: left;
    padding: 12px 16px;
    background: #f8fafc;
    font-size: 12px;
    text-transform: uppercase;
    color: var(--color-muted);
    border-bottom: 2px solid var(--color-border);
    font-weight: 600;
    letter-spacing: 0.05em;
}

table.dataTable tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
}

table.dataTable tbody tr:hover td {
    background: #f8fafc;
}

/* DataTables wrapper overrides */
.dataTables_wrapper {
    font-family: var(--font);
    font-size: 14px;
    color: var(--color-text);
}

.dataTables_wrapper .dataTables_filter input {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 14px;
    font-family: var(--font);
    outline: none;
    transition: border-color 0.15s;
}

.dataTables_wrapper .dataTables_filter input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.dataTables_wrapper .dataTables_length select {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 14px;
    font-family: var(--font);
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    border: 1px solid transparent !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current,
.dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
    background: var(--color-primary) !important;
    color: white !important;
    border-color: var(--color-primary) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: #f1f5f9 !important;
    color: var(--color-text) !important;
}

.dataTables_wrapper .dataTables_info {
    font-size: 13px;
    color: var(--color-muted);
    padding-top: 8px;
}

/* ----------------------------------------------------------
   Tabs
   ---------------------------------------------------------- */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: 24px;
}

.tab {
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    cursor: pointer;
    border: none;
    background: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.15s, border-bottom-color 0.15s;
    font-family: var(--font);
}

.tab:hover {
    color: var(--color-text);
}

.tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ----------------------------------------------------------
   Empty State
   ---------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--color-muted);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 16px;
    max-width: 400px;
    margin: 0 auto;
}

/* ----------------------------------------------------------
   Confirmation Overlay
   ---------------------------------------------------------- */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.overlay-dialog {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 32px;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.overlay-dialog h3 {
    margin: 0 0 12px;
    font-size: 18px;
}

.overlay-dialog p {
    color: var(--color-muted);
    margin: 0 0 24px;
    font-size: 14px;
    line-height: 1.5;
}

.overlay-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* ----------------------------------------------------------
   Buttons
   ---------------------------------------------------------- */
.btn {
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--color-border);
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    font-family: var(--font);
    line-height: 1.5;
}

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

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

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: #f1f5f9;
}

/* ----------------------------------------------------------
   Map Container
   ---------------------------------------------------------- */
.map-container {
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    overflow: hidden;
    min-height: 400px;
}

/* ----------------------------------------------------------
   Recently Updated Section
   ---------------------------------------------------------- */
.recent-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.recent-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--color-text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.recent-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.recent-item small {
    color: var(--color-muted);
    margin-left: auto;
}

/* ----------------------------------------------------------
   Strengths / Weaknesses Cards
   ---------------------------------------------------------- */
.strengths-weaknesses {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.strength-item {
    padding: 12px 16px;
    background: #f0fdf4;
    border-left: 3px solid var(--color-success);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 14px;
}

.weakness-item {
    padding: 12px 16px;
    background: #fef2f2;
    border-left: 3px solid var(--color-danger);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 14px;
}

/* ----------------------------------------------------------
   Responsive — 768px
   ---------------------------------------------------------- */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
        background: none;
        border: none;
        font-size: 24px;
        cursor: pointer;
        padding: 4px 8px;
        color: var(--color-text);
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 8px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
    }

    .nav-links.open {
        display: flex;
    }

    .layout-sidebar {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

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

    .hero h1 {
        font-size: 28px;
    }

    .strengths-weaknesses {
        grid-template-columns: 1fr;
    }

    .tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
}

/* ----------------------------------------------------------
   Responsive — 480px
   ---------------------------------------------------------- */
@media (max-width: 480px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 16px;
    }

    .overlay-dialog {
        padding: 24px;
    }
}