/* Modern Glassmorphic Design System - HSL Tailored Palettes */

:root {
    /* Colors - Dark Theme (Default) */
    --bg-app: #09090b;
    --bg-card: rgba(24, 24, 27, 0.65);
    --bg-header: rgba(9, 9, 11, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --primary: #8b5cf6; /* Violet */
    --primary-glow: rgba(139, 92, 246, 0.3);
    --primary-gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    --overlay-bg: rgba(10, 10, 15, 0.75);
    --input-bg: rgba(255, 255, 255, 0.03);
    
    --green: #10b981; /* Emerald */
    --green-bg: rgba(16, 185, 129, 0.15);
    --orange: #f59e0b; /* Amber */
    --orange-bg: rgba(245, 158, 11, 0.15);
    --red: #ef4444; /* Rose */
    --red-bg: rgba(239, 68, 68, 0.15);
    
    --transition-speed: 0.25s;
    --border-radius: 12px;
}

/* Light Theme Variables */
body.light-mode {
    --bg-app: #f4f4f5;
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-header: rgba(244, 244, 245, 0.8);
    --border-color: rgba(9, 9, 11, 0.08);
    --overlay-bg: rgba(255, 255, 255, 0.7);
    --input-bg: rgba(255, 255, 255, 0.9);
    --text-primary: #09090b;
    --text-secondary: #52525b;
    --text-muted: #71717a;
    
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.15);
    
    --green-bg: rgba(16, 185, 129, 0.1);
    --orange-bg: rgba(245, 158, 11, 0.1);
    --red-bg: rgba(239, 68, 68, 0.1);
}

/* General Layout resets */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-app);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

h1, h2, h3, h4, .logo-text {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Glowing Background Accent */
.glow-bg {
    position: fixed;
    top: -10%;
    left: 20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-glow) 0%, rgba(9,9,11,0) 70%);
    z-index: -1;
    pointer-events: none;
    filter: blur(80px);
    transition: background var(--transition-speed);
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* ---------------- HEADER ---------------- */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    height: 70px;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    z-index: 100;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-accent {
    font-size: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    text-transform: uppercase;
}

.logo-subtext {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 2px;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 6px 12px;
    border-radius: 20px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.status-dot.green { background-color: var(--green); box-shadow: 0 0 8px var(--green); }

.app-nav {
    display: flex;
    gap: 0.5rem;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: color var(--transition-speed), background-color var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.nav-btn.active {
    color: var(--text-primary);
    background-color: var(--primary-glow);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.nav-btn .badge {
    background-color: var(--red);
    color: white;
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 700;
}

.compliance-score {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.score-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.score-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--green);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed);
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

/* ---------------- CARD GLASS PANEL ---------------- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    backdrop-filter: blur(16px);
    overflow: hidden;
    transition: box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    color: var(--text-primary);
}

/* ---------------- APP MAIN LAYOUT ---------------- */
.app-main {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    position: relative;
}

.tab-content {
    display: none;
    height: 100%;
}

.tab-content.active {
    display: block;
    animation: fadeIn var(--transition-speed) ease-in-out;
}

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

/* ---------------- 1. DRIVE EXPLORER TAB ---------------- */
.explorer-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 1.5rem;
    height: calc(100vh - 140px);
}

.explorer-sidebar {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tree-container {
    flex: 1;
    padding: 1rem 1.5rem;
    overflow-y: auto;
}

.explorer-details {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.detail-card {
    flex: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
}

.empty-state {
    justify-content: center;
    align-items: center;
    text-align: center;
}

.large-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.empty-message h3 {
    margin-bottom: 0.5rem;
    font-size: 1.4rem;
}

.empty-message p {
    color: var(--text-secondary);
    max-width: 500px;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Directory Tree Elements */
.tree-node {
    margin-left: 1.2rem;
    position: relative;
}

.tree-node-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.15s;
    user-select: none;
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.tree-node-row:hover {
    background-color: rgba(255, 255, 255, 0.04);
}

.tree-node-row.selected {
    background-color: var(--primary-glow);
    border: 1px solid rgba(139, 92, 246, 0.15);
}

.tree-node-icon {
    width: 16px;
    text-align: center;
    color: var(--primary);
}

.tree-node-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.compliance-icon {
    font-size: 0.75rem;
    margin-left: 0.5rem;
}
.compliance-icon.green { color: var(--green); }
.compliance-icon.red { color: var(--red); }

.tree-node-children {
    display: none;
    border-left: 1px dashed var(--border-color);
    margin-left: 8px;
}
.tree-node.expanded > .tree-node-children {
    display: block;
}

.toggle-arrow {
    font-size: 0.7rem;
    color: var(--text-secondary);
    transition: transform 0.2s;
    width: 10px;
}
.tree-node.expanded > .tree-node-row > .toggle-arrow {
    transform: rotate(90deg);
}

.loader {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    padding: 2rem;
}

/* Detail Card Layout */
.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

.detail-title {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-title h2 {
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: monospace;
}

.detail-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: 8px;
}

.meta-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.meta-value {
    font-size: 0.95rem;
    font-weight: 500;
}

.status-callout {
    display: flex;
    gap: 1rem;
    padding: 1.2rem;
    border-radius: 8px;
    align-items: flex-start;
}
.status-callout.compliant {
    background-color: var(--green-bg);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: var(--green);
}
.status-callout.violation {
    background-color: var(--red-bg);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: var(--red);
}

.status-callout-icon {
    font-size: 1.5rem;
}

.status-callout-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.status-callout-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

.status-callout-info p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.violation-list {
    margin-top: 0.5rem;
    padding-left: 1.2rem;
}

.violation-list li {
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

/* ---------------- 2. COMPLIANCE AUDITOR TAB ---------------- */
.auditor-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.summary-widget {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    gap: 1rem;
}

.widget-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}
.widget-icon.red { background-color: var(--red-bg); color: var(--red); }
.widget-icon.orange { background-color: var(--orange-bg); color: var(--orange); }
.widget-icon.yellow { background-color: var(--orange-bg); color: var(--orange); }
.widget-icon.green { background-color: var(--green-bg); color: var(--green); }

.widget-info {
    display: flex;
    flex-direction: column;
}

.widget-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.widget-info h2 {
    font-size: 1.8rem;
    font-weight: 700;
}

.auditor-table-card {
    height: calc(100vh - 280px);
    display: flex;
    flex-direction: column;
}

.table-container {
    flex: 1;
    overflow-y: auto;
}

.audit-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

.audit-table th, .audit-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.audit-table th {
    background-color: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.audit-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.01);
}

.badge-pill {
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-pill.folder { background-color: var(--orange-bg); color: var(--orange); }
.badge-pill.file { background-color: var(--primary-glow); color: var(--primary); }

.table-violations-list {
    padding-left: 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.table-violations-list li {
    margin-bottom: 2px;
}

.suggested-name {
    font-family: monospace;
    font-size: 0.8rem;
    padding: 2px 6px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

/* ---------------- 3. UPLOAD INTAKE TAB ---------------- */
.intake-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 1.5rem;
    height: calc(100vh - 140px);
}

.intake-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.form-grid {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.col-span-2 {
    grid-column: span 2;
}

label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"], input[type="email"], input[type="password"], select {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

input[type="text"]:focus, input[type="email"]:focus, input[type="password"]:focus, select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

/* Drag & Drop */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    background-color: rgba(255, 255, 255, 0.01);
    transition: background-color 0.15s, border-color 0.15s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.drop-zone.dragover {
    border-color: var(--primary);
    background-color: var(--primary-glow);
}

.drop-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.drop-text {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.drop-subtext {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.file-preview {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 8px;
    max-width: 90%;
    z-index: 10;
}

.file-preview i {
    font-size: 1.5rem;
    color: var(--primary);
}

.file-preview span {
    font-size: 0.85rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
}

.clear-file {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
}
.clear-file:hover { color: var(--red); }

/* Intake Preview Card */
.intake-preview {
    height: 100%;
}

.preview-card {
    height: 100%;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.preview-details {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.preview-item {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.preview-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.preview-path, .preview-folder, .preview-file {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.85rem;
    word-break: break-all;
}

.preview-path { color: var(--text-secondary); }
.preview-folder { color: var(--primary); font-weight: 600; }
.preview-file { color: var(--green); font-weight: 600; }

.sop-validation-notes {
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.sop-validation-notes h4 {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.rule-checklist {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.rule-checklist li {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
}
.rule-checklist li i { width: 14px; }
.rule-checklist li.pass { color: var(--green); }
.rule-checklist li.pass i { color: var(--green); }
.rule-checklist li.fail { color: var(--red); }
.rule-checklist li.fail i { color: var(--red); }

/* ---------------- 4. MY UPLOADS TAB ---------------- */
.my-uploads-layout {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 140px);
    gap: 1.5rem;
}

.my-uploads-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.my-uploads-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
    gap: 0.5rem;
}

/* ---------------- 5. DIAGNOSTICS & TESTS TAB ---------------- */
.diagnostics-layout {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 1.5rem;
    height: calc(100vh - 140px);
}

.diagnostics-control-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
}

.diagnostics-summary {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin: 2rem 0;
    flex: 1;
}

.diagnostics-gauge {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--bg-card) 55%, var(--primary-glow) 56%, var(--primary) 100%);
    border: 3px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px var(--primary-glow);
}

.gauge-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.gauge-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.diagnostics-metrics {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.metric-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: 6px;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
}
.metric-row.green { color: var(--green); border-color: rgba(16, 185, 129, 0.1); }
.metric-row.red { color: var(--red); border-color: rgba(239, 68, 68, 0.1); }

.diagnostics-results-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.test-console {
    flex: 1;
    background-color: #050508;
    margin: 1.5rem;
    border-radius: 8px;
    padding: 1.5rem;
    font-family: 'Courier New', Courier, monospace;
    overflow-y: auto;
    font-size: 0.85rem;
    line-height: 1.5;
    border: 1px solid var(--border-color);
}

.console-placeholder {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.console-line {
    margin-bottom: 0.25rem;
}
.console-line.pass { color: var(--green); }
.console-line.fail { color: var(--red); font-weight: bold; }
.console-line.header { color: var(--primary); font-weight: bold; border-bottom: 1px solid var(--border-color); padding-bottom: 4px; margin-bottom: 8px; }

/* Buttons & Controls */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 10px 16px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.1s;
    border: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
}
.btn-primary:hover {
    opacity: 0.9;
}
.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}
.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-success {
    background-color: var(--green-bg);
    color: var(--green);
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.btn-success:hover {
    background-color: rgba(16, 185, 129, 0.25);
}

.btn-danger {
    background-color: var(--red-bg);
    color: var(--red);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
    background-color: rgba(239, 68, 68, 0.25);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    font-size: 1rem;
    transition: color 0.15s;
}
.icon-btn:hover { color: var(--text-primary); }

.text-right { text-align: right; }
.text-center { text-align: center; }

/* ---------------- TOAST NOTIFICATIONS ---------------- */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1000;
}

.toast {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 300px;
    backdrop-filter: blur(12px);
    animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.toast.success { border-left: 4px solid var(--green); }
.toast.error { border-left: 4px solid var(--red); }
.toast i { font-size: 1.2rem; }
.toast.success i { color: var(--green); }
.toast.error i { color: var(--red); }

/* Custom scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* ---------------- 5. SESSION & AUTHENTICATION ---------------- */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--overlay-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    border-radius: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(16px);
    animation: scaleUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes scaleUp {
    from { transform: scale(0.9) translateY(20px); opacity: 0; }
    to { transform: scale(1) translateY(0); opacity: 1; }
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header .logo-accent {
    font-size: 2.5rem;
    color: var(--primary);
    display: inline-block;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 15px var(--primary-glow);
}

.login-header h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.input-icon-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon-wrapper i {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    font-size: 1rem;
}

.input-icon-wrapper input {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    padding: 12px 14px 12px 42px;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.input-icon-wrapper input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.login-error {
    background-color: var(--red-bg);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--red);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

/* Header Session Widgets */
.user-profile {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 6px 14px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-right: 0.5rem;
}

#user-display-name {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-profile .badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 10px;
    background-color: var(--primary);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
}

.logout-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    font-size: 0.9rem;
    transition: background-color 0.15s, color 0.15s, border-color 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-left: 0.5rem;
}

.logout-btn:hover {
    background-color: var(--red-bg);
    color: var(--red);
    border-color: rgba(239, 68, 68, 0.2);
}

/* ---------------- 6. RESPONSIVE DESIGN (MEDIA QUERIES) ---------------- */

/* Tablets and medium screens */
@media (max-width: 1024px) {
    .explorer-layout {
        grid-template-columns: 300px 1fr;
    }
    
    .diagnostics-layout {
        grid-template-columns: 320px 1fr;
    }
}

/* Tablets portrait and Mobile Phones */
@media (max-width: 900px) {
    .app-container {
        height: auto;
        min-height: 100vh;
    }
    
    .app-header {
        flex-direction: column;
        height: auto;
        padding: 1.5rem 1rem;
        gap: 1rem;
        align-items: center;
        text-align: center;
    }

    .header-left {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .status-badge {
        font-size: 0.8rem;
    }
    
    .app-nav {
        width: 100%;
        justify-content: center;
        gap: 0.5rem;
    }
    
    .nav-btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
    
    .header-right {
        gap: 0.75rem;
        margin-top: 0.5rem;
    }

    .app-main {
        padding: 1rem;
        height: auto;
        overflow-y: visible;
    }
    
    /* Drive Explorer Stack */
    .explorer-layout {
        grid-template-columns: 1fr;
        height: auto;
        gap: 1rem;
    }
    
    .explorer-sidebar {
        height: 380px;
    }
    
    .explorer-details {
        height: auto;
    }
    
    .detail-card {
        height: auto;
        min-height: 350px;
    }
    
    /* Intake Upload Stack */
    .intake-layout {
        grid-template-columns: 1fr;
        height: auto;
        gap: 1.5rem;
    }
    
    .intake-card {
        height: auto;
    }
    
    .preview-card {
        height: auto;
        padding: 1.5rem;
    }
    
    /* Diagnostics Stack */
    .diagnostics-layout {
        grid-template-columns: 1fr;
        height: auto;
        gap: 1.5rem;
    }
    
    .diagnostics-control-card {
        height: auto;
    }
    
    .diagnostics-results-card {
        height: auto;
        min-height: 400px;
    }
    
    .test-console {
        margin: 1rem 0;
        height: 350px;
    }
}

/* Small mobile devices */
@media (max-width: 580px) {
    .app-nav {
        flex-wrap: wrap;
    }
    
    .nav-btn {
        flex: 1 1 45%;
        text-align: center;
        justify-content: center;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
        gap: 1rem;
    }
    
    .col-span-2 {
        grid-column: span 1;
    }
    
    .login-card {
        padding: 1.75rem;
        max-width: 90%;
    }
    
    .metadata-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
}

/* ---------------- USER PROFILE KEY BUTTON ---------------- */
.profile-key-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
    font-size: 0.8rem;
    transition: color 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.25rem;
}

.profile-key-btn:hover {
    color: var(--primary);
}

/* ---------------- USER MANAGEMENT TAB ---------------- */
.users-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 1.5rem;
    height: calc(100vh - 140px);
}

.users-list-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.create-user-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.form-grid-vertical {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    padding: 1.5rem;
}

/* Media query adaptations for user management layout */
@media (max-width: 900px) {
    .users-layout {
        grid-template-columns: 1fr;
        height: auto;
        gap: 1.5rem;
    }
    
    .users-list-card {
        height: auto;
        min-height: 300px;
    }
    
    .create-user-card {
        height: auto;
    }
}