:root {
    --zm-bg: #08111f;
    --zm-panel: rgba(8, 17, 31, 0.82);
    --zm-panel-strong: #101b2d;
    --zm-border: rgba(166, 191, 223, 0.12);
    --zm-accent: #53d1b6;
    --zm-accent-strong: #0ea5e9;
    --zm-text: #eef5ff;
    --zm-muted: #9db0ca;
}

html, body {
    min-height: 100%;
    background:
        radial-gradient(circle at top, rgba(83, 209, 182, 0.12), transparent 30%),
        linear-gradient(180deg, #07111d 0%, #040914 100%);
    color: var(--zm-text);
}

body {
    font-family: "Segoe UI", "Helvetica Neue", sans-serif;
}

.dashboard-shell .card,
.guest-shell .card {
    background: var(--zm-panel);
    border: 1px solid var(--zm-border);
    backdrop-filter: blur(14px);
}

.app-frame {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.5rem;
    background: rgba(2, 6, 14, 0.84);
    border-right: 1px solid var(--zm-border);
    position: sticky;
    top: 0;
    min-height: 100vh;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.sidebar-dot {
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--zm-accent), var(--zm-accent-strong));
    box-shadow: 0 0 24px rgba(83, 209, 182, 0.55);
}

.sidebar .nav-link {
    color: var(--zm-text);
    padding: 0.8rem 1rem;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.02);
}

.sidebar .nav-link:hover,
.sidebar .nav-link:focus {
    background: rgba(83, 209, 182, 0.12);
}

.content-area {
    padding: 1.5rem;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.camera-grid,
.event-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
}

.camera-card,
.camera-empty-state,
.snapshot-shell,
.camera-player,
.event-image {
    overflow: hidden;
    border-radius: 1.25rem;
}

.snapshot-shell {
    aspect-ratio: 16 / 9;
    background: #020617;
}

.snapshot-image,
.camera-player,
.event-image {
    width: 100%;
    object-fit: cover;
    background: #000;
}

.camera-player {
    min-height: 240px;
}

.event-card-clickable {
    cursor: pointer;
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.event-card-clickable:hover,
.event-card-clickable:focus-visible {
    transform: translateY(-2px);
    border-color: rgba(83, 209, 182, 0.35);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.2);
    outline: none;
}

.stats-row,
.info-stack {
    display: grid;
    gap: 0.75rem;
}

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

.stats-row div,
.info-stack div {
    padding: 0.9rem 1rem;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.04);
}

.stats-row strong,
.info-stack strong {
    display: block;
    font-size: 1.1rem;
}

.stats-row span,
.info-stack span {
    color: var(--zm-muted);
    font-size: 0.85rem;
}

.mode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

.login-card {
    width: min(100%, 440px);
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.75rem;
    color: var(--zm-accent);
}

.webrtc-panel video {
    aspect-ratio: 16 / 9;
}

form.is-submitting {
    position: relative;
}

.btn-loading {
    opacity: 1;
    pointer-events: none;
}

.form-submit-feedback {
    margin-top: 0.75rem;
    color: var(--zm-muted);
    font-size: 0.9rem;
}

form.is-submitting button:not(.btn-loading),
form.is-submitting input,
form.is-submitting select,
form.is-submitting textarea {
    cursor: wait;
}

@media (max-width: 991.98px) {
    .app-frame {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: relative;
        min-height: auto;
        gap: 1.5rem;
        border-right: 0;
        border-bottom: 1px solid var(--zm-border);
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 575.98px) {
    .content-area {
        padding: 1rem;
    }

    .stats-row {
        grid-template-columns: 1fr;
    }
}