/* ============================================
   4D VIEWR SaaS — Dashboard
   Palette: blue-grey-black + green accents
   ============================================ */

:root {
    --accent: #4a90b8;
    --accent-hover: #5ba3cc;
    --bg-dark: #0a0e14;
    --bg-card: #111820;
    --bg-card-hover: #161e28;
    --bg-input: #0d1219;
    --border: #1e2a36;
    --border-light: #2a3a4a;
    --text: #e0e6ed;
    --text-muted: #7a8a9a;
    --text-dim: #4a5a6a;
    --success: #2ecc71;
    --success-dim: rgba(46, 204, 113, 0.15);
    --danger: #e74c3c;
    --danger-dim: rgba(231, 76, 60, 0.12);
    --warning: #f39c12;
    --logo-gradient: linear-gradient(135deg, #4a90b8, #6ab8d0, #2ecc71);
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    --transition: 0.2s ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

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

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

/* ---------- Top Bar ---------- */

.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    padding: 0 24px;
    background: rgba(10, 14, 20, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.topbar-logo {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-weight: 700;
    text-decoration: none;
}

.logo-text {
    font-size: 20px;
    background: var(--logo-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 14px;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-name {
    font-size: 14px;
    color: var(--text);
    font-weight: 500;
}

.tier-badge {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--success-dim);
    color: var(--success);
    border: 1px solid rgba(46, 204, 113, 0.25);
}

.tier-badge.tier-pro {
    background: rgba(74, 144, 184, 0.15);
    color: var(--accent);
    border-color: rgba(74, 144, 184, 0.3);
}

.tier-badge.tier-creator {
    background: rgba(46, 204, 113, 0.12);
    color: #2ecc71;
    border-color: rgba(46, 204, 113, 0.25);
}

.tier-badge.tier-agency {
    background: rgba(243, 156, 18, 0.12);
    color: var(--warning);
    border-color: rgba(243, 156, 18, 0.25);
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    font-family: inherit;
    line-height: 1.4;
}

.btn-accent {
    background: var(--accent);
    color: #fff;
}

.btn-accent:hover {
    background: var(--accent-hover);
    color: #fff;
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--border-light);
    background: rgba(255, 255, 255, 0.04);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    padding: 6px 10px;
    font-size: 13px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.btn-icon:hover {
    color: var(--text);
    border-color: var(--border-light);
}

/* ---------- Dashboard Layout ---------- */

.dashboard {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

.section {
    margin-bottom: 40px;
}

.section h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 0;
}

/* ---------- Stats Row ---------- */

.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: border-color var(--transition);
}

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

.stat-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

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

.stat-limit {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-dim);
}

.stat-tier {
    font-size: 22px;
    background: var(--logo-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-date {
    font-size: 16px;
    color: var(--text-muted);
}

/* ---------- Scenes Grid ---------- */

.scenes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.scene-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition), transform var(--transition);
}

.scene-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.scene-thumb {
    width: 100%;
    height: 160px;
    background: linear-gradient(135deg, #0d1219 0%, #1a2530 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.scene-thumb-icon {
    font-size: 36px;
    color: var(--text-dim);
}

.scene-status {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: 6px;
}

.scene-status.published {
    background: var(--success-dim);
    color: var(--success);
}

.scene-status.draft {
    background: rgba(122, 138, 154, 0.15);
    color: var(--text-muted);
}

.scene-body {
    padding: 16px;
}

.scene-name {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.scene-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.scene-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.scene-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.scene-actions .btn {
    flex: 1;
    min-width: 0;
}

/* Publish Toggle */

.toggle-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
}

.toggle-label {
    font-size: 12px;
    color: var(--text-muted);
}

.toggle {
    position: relative;
    width: 36px;
    height: 20px;
    cursor: pointer;
}

.toggle input {
    display: none;
}

.toggle-track {
    position: absolute;
    inset: 0;
    background: var(--border);
    border-radius: 10px;
    transition: background var(--transition);
}

.toggle input:checked + .toggle-track {
    background: var(--success);
}

.toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    transition: transform var(--transition);
    pointer-events: none;
}

.toggle input:checked ~ .toggle-thumb {
    transform: translateX(16px);
}

/* ---------- Empty State ---------- */

.empty-state {
    text-align: center;
    padding: 60px 24px;
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
}

.empty-icon {
    font-size: 40px;
    color: var(--text-dim);
    margin-bottom: 12px;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 6px;
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 14px;
}

/* ---------- Billing ---------- */

.billing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.plan-card,
.usage-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.plan-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
    background: var(--logo-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.plan-price {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.plan-price span {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-muted);
}

.plan-features {
    list-style: none;
    margin-bottom: 20px;
}

.plan-features li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.plan-features li::before {
    content: "\2713 ";
    color: var(--success);
    margin-right: 8px;
}

.usage-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
}

.usage-item {
    margin-bottom: 20px;
}

.usage-label {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.usage-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.usage-fill {
    height: 100%;
    background: var(--success);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.usage-fill.warning {
    background: var(--warning);
}

.usage-fill.danger {
    background: var(--danger);
}

/* ---------- Account ---------- */

.account-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.account-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.account-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 12px;
}

.account-email {
    font-size: 15px;
    color: var(--text-muted);
}

.account-danger {
    grid-column: 1 / -1;
    border-color: rgba(231, 76, 60, 0.2);
}

.account-danger h3 {
    color: var(--danger);
}

.account-danger p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 16px;
}

/* ---------- Inputs ---------- */

.input {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
    transition: border-color var(--transition);
}

.input:focus {
    border-color: var(--accent);
}

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

.textarea {
    resize: vertical;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 12px;
    line-height: 1.5;
}

.input-label {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-muted);
    margin-bottom: 6px;
    margin-top: 16px;
}

.input-label:first-child {
    margin-top: 0;
}

.password-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.copy-row {
    display: flex;
    gap: 8px;
}

.copy-row .input {
    flex: 1;
}

/* ---------- Modals ---------- */

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 500;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 480px;
    max-width: 92vw;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
}

.modal-sm {
    width: 380px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 22px;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

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

.modal-body {
    padding: 20px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

.qr-container {
    display: flex;
    justify-content: center;
    padding: 16px;
    background: #fff;
    border-radius: var(--radius);
    margin-top: 4px;
}

/* ---------- Toast ---------- */

.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 600;
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    background: var(--success);
    box-shadow: var(--shadow);
    transform: translateY(80px);
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.error {
    background: var(--danger);
}

/* ---------- Loading Skeleton ---------- */

.skeleton {
    background: linear-gradient(90deg, var(--border) 25%, var(--border-light) 50%, var(--border) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .billing-grid {
        grid-template-columns: 1fr;
    }

    .account-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .topbar {
        padding: 0 16px;
        gap: 8px;
    }

    .topbar-right {
        gap: 10px;
    }

    .btn-new-scene span.full {
        display: none;
    }

    .user-name {
        display: none;
    }

    .dashboard {
        padding: 20px 16px 48px;
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .stat-value {
        font-size: 22px;
    }

    .scenes-grid {
        grid-template-columns: 1fr;
    }

    .scene-actions {
        flex-wrap: nowrap;
    }

    .scene-actions .btn {
        padding: 6px 8px;
        font-size: 12px;
    }

    .plan-price {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .stats-row {
        grid-template-columns: 1fr 1fr;
    }

    .stat-card {
        padding: 14px;
    }

    .stat-value {
        font-size: 20px;
    }

    .topbar-right .btn-new-scene {
        padding: 6px 10px;
        font-size: 13px;
    }
}