/* ============================================
   CTV Security — Tactical Command Center Theme
   Mobile-first PWA for security alerts
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Base palette — deep navy command center */
    --bg-primary: #060a12;
    --bg-secondary: #0c1220;
    --bg-tertiary: #131b2e;
    --bg-surface: #1a2340;
    --bg-surface-hover: #1f2b4a;
    --bg-elevated: #1e2844;

    /* Borders — cold steel */
    --border-primary: rgba(255, 255, 255, 0.06);
    --border-secondary: rgba(255, 255, 255, 0.1);
    --border-focus: #FF7F00;

    /* Text */
    --text-primary: #eef0f4;
    --text-secondary: #8892a6;
    --text-tertiary: #556075;
    --text-inverse: #060a12;

    /* Accent / Brand — CTV Orange */
    --accent: #FF7F00;
    --accent-hover: #e87200;
    --accent-muted: rgba(255, 127, 0, 0.1);
    --accent-glow: rgba(255, 127, 0, 0.25);
    --accent-soft: #ffaa44;

    /* Severity */
    --severity-critical: #ff3b3b;
    --severity-critical-bg: rgba(255, 59, 59, 0.1);
    --severity-high: #ff8c00;
    --severity-high-bg: rgba(255, 140, 0, 0.1);
    --severity-medium: #ffc107;
    --severity-medium-bg: rgba(255, 193, 7, 0.1);
    --severity-low: #2dd36f;
    --severity-low-bg: rgba(45, 211, 111, 0.1);
    --severity-info: #4d8dff;
    --severity-info-bg: rgba(77, 141, 255, 0.1);

    /* Status */
    --status-success: #2dd36f;
    --status-success-bg: rgba(45, 211, 111, 0.1);
    --status-warning: #ffc107;
    --status-error: #ff3b3b;

    /* Spacing — slightly larger for touch */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Typography */
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --text-xs: 0.75rem;
    --text-sm: 0.8125rem;
    --text-base: 0.9375rem;
    --text-lg: 1.0625rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(255, 127, 0, 0.15);
    --shadow-glow-strong: 0 0 30px rgba(255, 127, 0, 0.25);

    /* Transitions */
    --transition-fast: 120ms ease;
    --transition-base: 200ms ease;
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Mobile nav height */
    --nav-height: 56px;
    --bottom-nav-height: 64px;

    /* Safe area */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: transparent;
}

/* Subtle background texture */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(255, 127, 0, 0.04), transparent),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(255, 127, 0, 0.02), transparent);
    pointer-events: none;
    z-index: 0;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover { color: var(--accent-hover); }

button {
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    -webkit-tap-highlight-color: transparent;
}

ul, ol { list-style: none; }
img { max-width: 100%; }

/* ---- App Container ---- */
#app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
    position: relative;
    z-index: 1;
}

/* ============================================
   Navigation — Bottom on mobile, top on desktop
   ============================================ */
#main-nav {
    background: rgba(12, 18, 32, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-primary);
    padding: var(--space-xs) var(--space-sm);
    padding-bottom: calc(var(--space-xs) + var(--safe-bottom));
    display: flex;
    align-items: center;
    justify-content: space-around;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    min-height: var(--bottom-nav-height);
}

.nav-brand {
    display: none;
}

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

.nav-title {
    font-weight: 700;
    font-size: var(--text-lg);
    letter-spacing: -0.03em;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    align-items: center;
    justify-content: space-around;
    flex: 1;
    gap: 0;
}

.nav-links::-webkit-scrollbar { display: none; }

.nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-tertiary);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    min-width: 56px;
    min-height: 48px;
    justify-content: center;
    position: relative;
}

.nav-link svg {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--text-secondary);
}

.nav-link.active {
    color: var(--accent);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

.nav-user {
    display: none;
}

#user-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.user-name {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ---- Main Content ---- */
#app {
    flex: 1;
    padding: var(--space-md);
    padding-bottom: calc(var(--bottom-nav-height) + var(--space-md) + var(--safe-bottom));
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    animation: fadeUp 0.3s ease;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Buttons — Generous touch targets
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.625rem 1.125rem;
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: all var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
    line-height: 1.4;
    min-height: 44px;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

.btn:active:not(:disabled) {
    transform: scale(0.97);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn--primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(255, 127, 0, 0.3);
}

.btn--primary:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    box-shadow: var(--shadow-glow);
}

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

.btn--secondary:hover:not(:disabled) {
    background: var(--bg-surface-hover);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn--danger {
    background: rgba(255, 59, 59, 0.15);
    color: var(--severity-critical);
    border-color: rgba(255, 59, 59, 0.25);
}

.btn--danger:hover:not(:disabled) {
    background: rgba(255, 59, 59, 0.25);
}

.btn--ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
    min-height: auto;
}

.btn--ghost:hover:not(:disabled) {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.btn--sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--text-xs);
    min-height: 36px;
    border-radius: var(--radius-sm);
}

.btn--lg {
    padding: 0.875rem 1.75rem;
    font-size: var(--text-base);
    min-height: 52px;
    border-radius: var(--radius-lg);
    font-weight: 700;
}

.btn--success {
    background: var(--status-success);
    color: #fff;
    border-color: var(--status-success);
}

.btn--success:hover:not(:disabled) {
    background: #26b860;
}

/* ============================================
   Cards — Glass-panel feel
   ============================================ */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.card-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.card-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}

/* ---- Page Header ---- */
.page-header {
    margin-bottom: var(--space-lg);
}

.page-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
    letter-spacing: -0.03em;
}

.page-description {
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

/* ---- Grid ---- */
.grid {
    display: grid;
    gap: var(--space-sm);
}

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

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(2, 1fr);
}

/* ============================================
   Stat Cards — Dashboard metrics
   ============================================ */
.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: 2px;
    position: relative;
    overflow: hidden;
}

.stat-card__label {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-tertiary);
}

.stat-card__value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.stat-card__detail {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* ============================================
   Severity Badges — Pill-shaped status
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.1875rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.badge--critical {
    background: var(--severity-critical-bg);
    color: var(--severity-critical);
    border: 1px solid rgba(255, 59, 59, 0.2);
}

.badge--high {
    background: var(--severity-high-bg);
    color: var(--severity-high);
    border: 1px solid rgba(255, 140, 0, 0.2);
}

.badge--medium {
    background: var(--severity-medium-bg);
    color: var(--severity-medium);
    border: 1px solid rgba(255, 193, 7, 0.2);
}

.badge--low {
    background: var(--severity-low-bg);
    color: var(--severity-low);
    border: 1px solid rgba(45, 211, 111, 0.2);
}

.badge--info {
    background: var(--severity-info-bg);
    color: var(--severity-info);
    border: 1px solid rgba(77, 141, 255, 0.2);
}

/* ============================================
   Notification List
   ============================================ */
.notification-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.notification-item {
    display: flex;
    align-items: stretch;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    min-height: 72px;
}

.notification-item:hover {
    border-color: var(--border-secondary);
    background: var(--bg-tertiary);
}

.notification-item:active {
    transform: scale(0.99);
}

.notification-item__severity {
    flex-shrink: 0;
    width: 3px;
    border-radius: 2px;
    align-self: stretch;
}

.notification-item__severity--critical { background: var(--severity-critical); box-shadow: 0 0 8px rgba(255, 59, 59, 0.4); }
.notification-item__severity--high { background: var(--severity-high); box-shadow: 0 0 8px rgba(255, 140, 0, 0.3); }
.notification-item__severity--medium { background: var(--severity-medium); }
.notification-item__severity--low { background: var(--severity-low); }
.notification-item__severity--info { background: var(--severity-info); }

.notification-item__content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.notification-item__title {
    font-weight: 600;
    font-size: var(--text-sm);
    margin-bottom: 2px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.notification-item__body {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.5;
}

.notification-item__meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-xs);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* ---- Notification Acknowledgment ---- */
.notification-item--acknowledged {
    opacity: 0.7;
}

.notification-item__ack-icon {
    flex-shrink: 0;
    color: var(--status-success);
    display: flex;
    align-items: center;
}

.acknowledge-section {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-primary);
}

.btn--acknowledged {
    background: var(--status-success-bg);
    color: var(--status-success);
    border-color: rgba(45, 211, 111, 0.2);
    cursor: default;
}

/* ============================================
   Channel List
   ============================================ */
.channel-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    gap: var(--space-md);
}

.channel-item:hover {
    border-color: var(--border-secondary);
}

.channel-item__info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.channel-item__name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-base);
}

.channel-item__description {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.4;
}

.channel-item__subscribers {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: 2px;
}

/* ============================================
   Toggle Switch — Larger for mobile
   ============================================ */
.toggle {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 30px;
    flex-shrink: 0;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle__slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-secondary);
    border-radius: 15px;
    transition: all var(--transition-smooth);
}

.toggle__slider::before {
    content: '';
    position: absolute;
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background: var(--text-tertiary);
    border-radius: 50%;
    transition: all var(--transition-smooth);
}

.toggle input:checked + .toggle__slider {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(255, 127, 0, 0.3);
}

.toggle input:checked + .toggle__slider::before {
    transform: translateX(22px);
    background: #fff;
}

/* ============================================
   Form Elements
   ============================================ */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.form-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.form-input,
.form-select,
.form-textarea {
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-base);
    font-family: inherit;
    transition: all var(--transition-base);
    width: 100%;
    min-height: 48px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-help {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* ============================================
   Tables — Responsive card-style on mobile
   ============================================ */
.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.table th,
.table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-primary);
    white-space: nowrap;
}

.table th {
    font-weight: 600;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: sticky;
    top: 0;
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* ---- Pagination ---- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding: var(--space-sm) 0;
}

.pagination__info {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0 var(--space-sm);
    font-variant-numeric: tabular-nums;
}

/* ============================================
   Toast — Mobile-friendly bottom center
   ============================================ */
#toast-container {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--space-md) + var(--safe-bottom));
    left: var(--space-md);
    right: var(--space-md);
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: var(--space-sm);
    z-index: 1000;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-size: var(--text-sm);
    color: var(--text-primary);
    pointer-events: auto;
    animation: toast-in 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 420px;
    width: 100%;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.toast svg {
    flex-shrink: 0;
}

.toast--success { border-left: 3px solid var(--status-success); }
.toast--error { border-left: 3px solid var(--status-error); }
.toast--warning { border-left: 3px solid var(--status-warning); }
.toast--info { border-left: 3px solid var(--accent); }

.toast.removing {
    animation: toast-out 0.25s ease forwards;
}

@keyframes toast-in {
    from { transform: translateY(16px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes toast-out {
    from { transform: translateY(0); opacity: 1; }
    to { transform: translateY(16px); opacity: 0; }
}

/* ============================================
   Modal — Full-screen drawer on mobile
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 500;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
    animation: overlay-in 0.2s ease;
}

@keyframes overlay-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    max-height: 90dvh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modal-slide-up 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modal-slide-up {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 1;
}

/* Drag indicator */
.modal-header::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 4px;
    background: var(--border-secondary);
    border-radius: 2px;
}

.modal-title {
    font-size: var(--text-lg);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 1.5rem;
    line-height: 1;
    padding: var(--space-sm);
    transition: color var(--transition-fast);
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.modal-close:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    padding-bottom: calc(var(--space-lg) + var(--safe-bottom));
    border-top: 1px solid var(--border-primary);
}

/* ---- Loading ---- */
.loading-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 240px;
    gap: var(--space-md);
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 2.5px solid var(--border-primary);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(6, 10, 18, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 600;
    backdrop-filter: blur(4px);
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    color: var(--text-secondary);
}

.empty-state__icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.3;
}

.empty-state__title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.empty-state__text {
    font-size: var(--text-sm);
    max-width: 320px;
    margin: 0 auto;
    line-height: 1.6;
    color: var(--text-tertiary);
}

/* ---- Detail View ---- */
.detail-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.detail-header__back {
    margin-top: 0.15rem;
}

.detail-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.detail-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-primary);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.detail-meta__item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.detail-meta__label {
    color: var(--text-tertiary);
    min-width: 80px;
}

/* ============================================
   Settings
   ============================================ */
.settings-section {
    margin-bottom: var(--space-xl);
}

.settings-section__title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-primary);
    letter-spacing: -0.02em;
}

.settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-primary);
    gap: var(--space-md);
}

.settings-row:last-child {
    border-bottom: none;
}

.settings-row__info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.settings-row__label {
    font-weight: 600;
    font-size: var(--text-sm);
}

.settings-row__description {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    line-height: 1.5;
}

/* ---- API Key Display ---- */
.api-key-display {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    word-break: break-all;
}

.api-key-display__value {
    flex: 1;
    color: var(--accent-soft);
}

/* ---- Status Indicators ---- */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: var(--space-xs);
}

.status-dot--active {
    background: var(--status-success);
    box-shadow: 0 0 6px rgba(45, 211, 111, 0.4);
}

.status-dot--inactive { background: var(--text-tertiary); }

/* ---- Admin Tabs ---- */
.admin-tabs {
    display: flex;
    gap: 0;
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-primary);
}

.admin-tab {
    padding: var(--space-md);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-tertiary);
    border: none;
    background: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition-base);
    min-height: 48px;
    display: flex;
    align-items: center;
}

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

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

/* ============================================
   Login Screen — Secure entry portal
   ============================================ */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: var(--space-xl);
    position: relative;
    overflow: hidden;
}

/* Atmospheric background glow */
.login-screen::before {
    content: '';
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 127, 0, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.login-screen::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 127, 0, 0.04) 0%, transparent 60%);
    pointer-events: none;
}

.login-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 360px;
    width: 100%;
    position: relative;
    z-index: 1;
    animation: loginFade 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes loginFade {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-logo {
    color: var(--accent);
    margin-bottom: var(--space-xl);
    filter: drop-shadow(0 0 20px rgba(255, 127, 0, 0.3));
    animation: loginPulse 3s ease-in-out infinite;
}

@keyframes loginPulse {
    0%, 100% { filter: drop-shadow(0 0 20px rgba(255, 127, 0, 0.3)); }
    50% { filter: drop-shadow(0 0 30px rgba(255, 127, 0, 0.5)); }
}

.login-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--space-xs);
    letter-spacing: -0.04em;
}

.login-subtitle {
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    margin: 0 0 var(--space-2xl);
    line-height: 1.5;
}

.login-btn {
    width: 100%;
    font-size: var(--text-base) !important;
    padding: 1rem 2rem !important;
    min-height: 56px !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: 0 4px 20px rgba(255, 127, 0, 0.35);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.login-btn:hover {
    box-shadow: var(--shadow-glow-strong);
    transform: translateY(-1px);
}

.login-btn:active {
    transform: translateY(0) scale(0.98);
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-mono { font-family: var(--font-mono); }
.text-muted { color: var(--text-secondary); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ============================================
   Desktop (768px+) — Top navigation layout
   ============================================ */
@media (min-width: 769px) {
    #main-nav {
        position: sticky;
        top: 0;
        bottom: auto;
        border-top: none;
        border-bottom: 1px solid var(--border-primary);
        padding: var(--space-sm) var(--space-lg);
        padding-bottom: var(--space-sm);
        justify-content: flex-start;
        gap: var(--space-lg);
        min-height: var(--nav-height);
    }

    .nav-brand {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
        color: var(--text-primary);
        flex-shrink: 0;
    }

    .nav-links {
        flex: 1;
        justify-content: flex-start;
        gap: var(--space-xs);
    }

    .nav-link {
        flex-direction: row;
        gap: var(--space-xs);
        padding: var(--space-sm) var(--space-md);
        font-size: var(--text-sm);
        min-width: auto;
        min-height: 40px;
    }

    .nav-link svg {
        width: 18px;
        height: 18px;
    }

    .nav-link.active::before {
        display: none;
    }

    .nav-link.active {
        background: var(--accent-muted);
    }

    .nav-user {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
        flex-shrink: 0;
    }

    #app {
        padding: var(--space-xl);
        padding-bottom: var(--space-xl);
    }

    .grid--4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .grid--3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .modal-overlay {
        align-items: center;
        padding: var(--space-lg);
    }

    .modal {
        border-radius: var(--radius-xl);
        animation: modal-scale-in 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    @keyframes modal-scale-in {
        from { transform: scale(0.95); opacity: 0; }
        to { transform: scale(1); opacity: 1; }
    }

    .modal-header::before {
        display: none;
    }

    .modal-footer {
        padding-bottom: var(--space-lg);
    }

    #toast-container {
        bottom: var(--space-lg);
        left: auto;
        right: var(--space-lg);
        align-items: flex-end;
        max-width: 400px;
    }

    .detail-meta {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

/* ============================================
   Small phone tweaks (< 380px)
   ============================================ */
@media (max-width: 380px) {
    :root {
        --space-md: 0.875rem;
        --space-lg: 1.25rem;
    }

    .nav-link {
        padding: var(--space-sm) var(--space-xs);
        min-width: 48px;
    }

    .login-title {
        font-size: 1.75rem;
    }
}

/* ============================================
   CSP-compatible font-face fallback
   ============================================ */
@supports not (font-family: 'DM Sans') {
    :root {
        --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        --font-mono: 'SF Mono', 'Fira Code', monospace;
    }
}