/* --- Variables --- */
:root {
    --color-bg: #0D0F1A;
    --color-surface: #1A1D2E;
    --color-surface-hover: #242840;
    --color-border: #2A2E45;
    --color-primary: #5B21FA;
    --color-primary-hover: #7C4DFF;
    --color-accent: #0ECFB8;
    --color-danger: #EF4444;
    --color-text: #F0F2FF;
    --color-text-muted: #8B8FA8;
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --radius: 8px;
    --radius-sm: 4px;
    --sidebar-width: 220px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- Sidebar --- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-brand {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    padding: 0 0.5rem;
}

.nav-link {
    display: block;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: background 0.15s, color 0.15s;
}
.nav-link:hover { background: var(--color-surface-hover); color: var(--color-text); text-decoration: none; }
.nav-link.active { background: var(--color-primary); color: #fff; }
.nav-sep { border: none; border-top: 1px solid var(--color-border); margin: 0.5rem 1rem; }
.nav-section-label { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); padding: 0.25rem 0.75rem; opacity: 0.7; }

.sidebar-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

/* --- Content --- */
.content {
    margin-left: var(--sidebar-width);
    padding: 2rem;
}

.content-full {
    margin-left: 0;
    display: flex;
    justify-content: center;
    padding-top: 10vh;
}

/* --- Page Header --- */
.page-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.page-header h1 { font-size: 1.5rem; font-weight: 600; }

/* --- Flash Messages --- */
.flash-messages { margin-bottom: 1rem; }
.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}
.flash-error { background: rgba(239, 68, 68, 0.15); border: 1px solid var(--color-danger); }
.flash-success { background: rgba(34, 197, 94, 0.15); border: 1px solid var(--color-success); }

/* --- Tables --- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.data-table th, .data-table td {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--color-border);
}
.data-table th {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.data-table tbody tr:hover { background: var(--color-surface-hover); }

.empty { color: var(--color-text-muted); font-style: italic; padding: 1rem 0; }

/* --- Badges --- */
.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}
.badge-inventory { background: rgba(139, 143, 168, 0.2); color: var(--color-text-muted); }
.badge-sold { background: rgba(34, 197, 94, 0.2); color: var(--color-success); }
.badge-disabled { background: rgba(239, 68, 68, 0.2); color: var(--color-danger); }
.badge-registered { background: rgba(139, 143, 168, 0.2); color: var(--color-text-muted); }
.badge-active { background: rgba(34, 197, 94, 0.2); color: var(--color-success); }
.badge-inactive { background: rgba(239, 68, 68, 0.15); color: var(--color-text-muted); }
.badge-cancelled { background: rgba(239, 168, 68, 0.2); color: #f0a030; }
.badge-suspended { background: rgba(239, 68, 68, 0.2); color: var(--color-danger); }
.badge-unassigned { background: rgba(139, 143, 168, 0.2); color: var(--color-text-muted); }
.badge-pending { background: rgba(239, 168, 68, 0.2); color: #f0a030; }
.badge-approved { background: rgba(34, 197, 94, 0.2); color: var(--color-success); }
.badge-rejected { background: rgba(239, 68, 68, 0.2); color: var(--color-danger); }
.license-pill { display: inline-block; padding: 0.15rem 0.5rem; margin: 0.1rem 0.2rem; border-radius: 4px; font-size: 0.85rem; background: rgba(14, 207, 184, 0.15); color: var(--color-accent); }
.license-pill small { opacity: 0.7; }

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.15s;
}
.btn:hover { background: var(--color-surface-hover); text-decoration: none; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); color: #fff; }
.btn-sm { padding: 0.25rem 0.6rem; font-size: 0.8rem; }

/* --- Per-column Filters --- */
.filter-row th {
    padding: 0.3rem 0.75rem 0.6rem;
    border-bottom: 1px solid var(--color-border);
}
.column-filter {
    width: 100%;
    padding: 0.3rem 0.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.8rem;
    font-family: var(--font);
}
.column-filter:focus { outline: none; border-color: var(--color-primary); }

/* --- Sortable Headers --- */
.data-table th.sortable {
    cursor: pointer;
    user-select: none;
    position: relative;
    padding-right: 1.5rem;
}
.data-table th.sortable:hover { color: var(--color-text); }
.data-table th.sortable::after {
    content: '⇅';
    position: absolute;
    right: 0.4rem;
    opacity: 0.3;
    font-size: 0.7rem;
}
.data-table th.sort-asc::after { content: '↑'; opacity: 0.8; }
.data-table th.sort-desc::after { content: '↓'; opacity: 0.8; }

/* --- Forms --- */
.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 0.3rem;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.9rem;
    font-family: var(--font);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* --- Autocomplete --- */
.form-group { position: relative; }
.autocomplete-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    max-height: 200px;
    overflow-y: auto;
}
.autocomplete-item {
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
}
.autocomplete-item:hover { background: var(--color-surface-hover); }
.autocomplete-item.empty { color: var(--color-text-muted); cursor: default; }

.form-row { display: flex; gap: 1rem; }
.form-row .form-group { flex: 1; }

.form-inline { display: flex; gap: 1rem; align-items: flex-end; }
.form-inline .form-group { margin-bottom: 0; }

/* --- Auth --- */
.auth-container {
    text-align: center;
    width: 400px;
}
.auth-container h1 { margin-bottom: 0.5rem; }
.auth-container form { text-align: left; }

/* --- Detail Grid --- */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}
@media (max-width: 900px) { .detail-grid { grid-template-columns: 1fr; } }

.detail-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
}
.detail-card h2 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.8rem;
}

dl { display: grid; grid-template-columns: auto 1fr; gap: 0.4rem 1rem; font-size: 0.9rem; }
dt { color: var(--color-text-muted); }

/* --- Device Grid (Portal Dashboard) --- */
.device-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.device-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    transition: border-color 0.15s;
}
.device-card:hover { border-color: var(--color-primary); }

.device-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.device-type { font-size: 0.85rem; color: var(--color-text-muted); display: block; margin-bottom: 0.5rem; }

.license-list { display: flex; flex-direction: column; gap: 0.3rem; }
.license-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 0.3rem 0;
    border-top: 1px solid var(--color-border);
}
.app-name { font-weight: 500; }
.exp-date { color: var(--color-text-muted); }

/* --- Billing --- */
.billing-notice {
    background: var(--color-surface);
    border: 1px solid var(--color-warning);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--color-warning);
}

/* --- Confirm Modal --- */
.confirm-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}
.confirm-overlay.active { display: flex; }
.confirm-dialog {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.confirm-dialog p {
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
    line-height: 1.5;
}
.confirm-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.subtitle { color: var(--color-text-muted); margin-bottom: 1.5rem; }