/* ============================================
   VC Platform - Mission Control Dark Theme
   ============================================ */

/* CSS Variables */
:root {
    /* Monochrome palette */
    --bg-primary: #09090B;
    --bg-secondary: #0A0A0C;
    --surface-1: #111113;
    --surface-2: #18181B;
    --surface-3: #1F1F23;
    --surface-4: #27272A;
    
    /* Borders */
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --border-active: rgba(255, 255, 255, 0.18);
    
    /* Text - Monochrome */
    --text-primary: #FAFAFA;
    --text-secondary: rgba(255, 255, 255, 0.75);
    --text-muted: rgba(255, 255, 255, 0.45);
    --text-icon: rgba(255, 255, 255, 0.85);
    
    /* Accent - Monochrome subtle highlight */
    --accent: rgba(255, 255, 255, 0.95);
    --accent-hover: rgba(255, 255, 255, 0.8);
    --accent-light: rgba(255, 255, 255, 0.06);
    --accent-medium: rgba(255, 255, 255, 0.1);
    
    /* Semantic (muted, not vibrant) */
    --success: rgba(163, 185, 163, 0.8);
    --warning: rgba(200, 175, 140, 0.8);
    --error: rgba(180, 140, 140, 0.8);
    --info: rgba(140, 160, 180, 0.8);
    
    /* Icon colors - Monochrome */
    --icon-primary: rgba(255, 255, 255, 0.9);
    --icon-secondary: rgba(255, 255, 255, 0.7);
    --icon-muted: rgba(255, 255, 255, 0.45);
    --icon-bg: rgba(255, 255, 255, 0.06);
    --icon-bg-hover: rgba(255, 255, 255, 0.1);
    
    /* Spacing */
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    
    /* Shadows - Subtle */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5), 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.6), 0 4px 8px rgba(0, 0, 0, 0.4);
    
    /* Transitions */
    --transition-fast: 120ms cubic-bezier(0, 0, 0.2, 1);
    --transition-normal: 200ms cubic-bezier(0, 0, 0.2, 1);
    --transition-smooth: 280ms cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --tracking-tight: -0.025em;
    --tracking-tighter: -0.04em;
}

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

/* Global SVG icon monochrome reset */
svg {
    color: inherit;
}

.sidebar svg,
.stat-card svg,
.action-card svg,
.activity-item svg,
.nav-item svg,
.btn svg {
    stroke: currentColor;
    fill: none;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    letter-spacing: -0.01em;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface-1);
}

::-webkit-scrollbar-thumb {
    background: var(--surface-3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* ============================================
   Sidebar Navigation
   ============================================ */
.sidebar {
    width: 260px;
    background-color: var(--surface-1);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-item:hover {
    background-color: var(--surface-2);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--accent-medium);
    color: var(--text-primary);
}

.nav-item svg {
    flex-shrink: 0;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.nav-item:hover svg {
    opacity: 1;
}

.nav-item.active svg {
    opacity: 1;
    color: var(--accent);
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
    transition: background-color var(--transition-fast);
}

.status-dot.connected {
    background-color: var(--text-secondary);
}

.status-dot.error {
    background-color: var(--text-muted);
}

.status-text {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

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

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 32px 40px;
    max-width: calc(100% - 260px);
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* ============================================
   Sections
   ============================================ */
.section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Stats Grid
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background-color: var(--surface-1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: border-color var(--transition-fast);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon.issued,
.stat-icon.verified,
.stat-icon.wallet,
.stat-icon.pending {
    background-color: var(--icon-bg);
    color: var(--icon-secondary);
}

.stat-icon.issued:hover,
.stat-icon.verified:hover,
.stat-icon.wallet:hover,
.stat-icon.pending:hover {
    background-color: var(--icon-bg-hover);
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ============================================
   Dashboard Grid
   ============================================ */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

/* ============================================
   Panels
   ============================================ */
.panel {
    background-color: var(--surface-1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.panel-body {
    padding: 24px;
}

/* ============================================
   Quick Actions
   ============================================ */
.quick-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.action-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background-color: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
    width: 100%;
    color: inherit;
}

.action-card:hover {
    background-color: var(--surface-3);
    border-color: var(--border-hover);
}

.action-icon {
    width: 40px;
    height: 40px;
    background-color: var(--icon-bg);
    color: var(--icon-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-normal);
}

.action-card:hover .action-icon {
    background-color: var(--icon-bg-hover);
    color: var(--icon-primary);
}

.action-title {
    font-weight: 600;
    color: var(--text-primary);
}

.action-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ============================================
   Activity List
   ============================================ */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background-color: var(--surface-2);
    border-radius: var(--radius-md);
}

.activity-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background-color: var(--icon-bg);
    color: var(--icon-secondary);
}

.activity-content {
    flex: 1;
    min-width: 0;
}

.activity-title {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.activity-time {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--text-muted);
    text-align: center;
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 0.9375rem;
}

/* ============================================
   Forms
   ============================================ */
.form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    background-color: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--border-active);
    box-shadow: 0 0 0 3px var(--accent-medium);
}

.form-control::placeholder {
    color: var(--text-muted);
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.form-section {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.form-section h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

/* Claim Rows */
.claim-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.claim-row .claim-key {
    flex: 1;
}

.claim-row .claim-value {
    flex: 2;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-primary);
}

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

.btn-secondary {
    background-color: var(--surface-2);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--surface-3);
    border-color: var(--border-hover);
}

.btn-danger {
    background-color: var(--accent-light);
    color: var(--icon-secondary);
}

.btn-danger:hover {
    background-color: var(--accent-medium);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

.btn-icon {
    padding: 8px;
    width: 36px;
    height: 36px;
}

/* ============================================
   Result Container
   ============================================ */
.result-container {
    margin-top: 24px;
    background-color: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.result-container.hidden {
    display: none;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    background-color: var(--accent-light);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--text-primary);
}

.result-header.error {
    background-color: var(--accent-light);
    color: var(--text-muted);
}

.result-body {
    padding: 20px;
}

.result-field {
    margin-bottom: 16px;
}

.result-field label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.result-field code {
    display: block;
    background-color: var(--surface-3);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8125rem;
    word-break: break-all;
}

.result-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.qr-placeholder {
    width: 160px;
    height: 160px;
    background-color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-placeholder.large {
    width: 240px;
    height: 240px;
    margin: 0 auto;
}

/* ============================================
   Tabs
   ============================================ */
.verify-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.tab-btn {
    padding: 8px 16px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-primary);
    background-color: var(--surface-2);
}

.tab-btn.active {
    color: var(--accent);
    background-color: var(--accent-medium);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================
   Upload Area
   ============================================ */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-muted);
}

.upload-area:hover {
    border-color: var(--border-active);
    background-color: var(--accent-medium);
}

.upload-area svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

.qr-scan-area {
    padding: 48px 24px;
    text-align: center;
}

/* ============================================
   Wallet Section
   ============================================ */
.wallet-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.wallet-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background-color: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.wallet-card:hover {
    border-color: var(--border-active);
    background-color: var(--surface-3);
}

.wallet-logo {
    flex-shrink: 0;
}

.wallet-info {
    flex: 1;
}

.wallet-name {
    font-weight: 600;
    color: var(--text-primary);
}

.wallet-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.wallet-status {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 4px 12px;
    background-color: var(--surface-3);
    border-radius: 20px;
}

.wallet-status.connected {
    color: var(--text-secondary);
    background-color: var(--icon-bg);
}

.wallet-details {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.wallet-details.hidden {
    display: none;
}

.wallet-details h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.detail-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    align-items: center;
}

.detail-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    min-width: 100px;
}

.detail-value {
    color: var(--text-primary);
    font-size: 0.875rem;
}

.detail-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

/* ============================================
   Credentials List
   ============================================ */
.credentials-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.credential-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background-color: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.credential-icon {
    width: 44px;
    height: 44px;
    background-color: var(--icon-bg);
    color: var(--icon-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.credential-info {
    flex: 1;
}

.credential-type {
    font-weight: 600;
    color: var(--text-primary);
}

.credential-issuer {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.credential-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ============================================
   Data Table
   ============================================ */
.history-table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.data-table th {
    text-align: left;
    padding: 12px 16px;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.data-table tbody tr:hover {
    background-color: var(--surface-2);
}

.data-table .empty-row td {
    padding: 0;
    border: none;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 500;
}

.status-badge.success {
    background-color: var(--icon-bg);
    color: var(--text-secondary);
}

.status-badge.error {
    background-color: var(--icon-bg);
    color: var(--text-muted);
}

.status-badge.pending {
    background-color: var(--icon-bg);
    color: var(--text-muted);
}

.status-badge.info {
    background-color: var(--icon-bg);
    color: var(--text-muted);
}

/* ============================================
   Toast Notifications
   ============================================ */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background-color: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    max-width: 400px;
}

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

.toast.error {
    border-left: 3px solid var(--text-muted);
}

.toast.warning {
    border-left: 3px solid var(--text-muted);
}

.toast.info {
    border-left: 3px solid var(--text-muted);
}

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

.toast-message {
    flex: 1;
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* ============================================
   Links
   ============================================ */
.link {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
}

.link:hover {
    text-decoration: underline;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        max-width: 100%;
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .claim-row {
        flex-direction: column;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.hidden {
    display: none !important;
}

.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--text-muted); }

/* Loading Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Code blocks */
code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.875rem;
}