:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
    --shadow: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px 0 rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --radius: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.hidden {
    display: none !important;
}

/* Navigation */
.nav {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.logo.large {
    width: 64px;
    height: 64px;
    font-size: 24px;
    border-radius: var(--radius-lg);
}

.brand-name {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--gray-900);
}

.nav-links {
    display: flex;
    gap: 0.25rem;
}

.nav-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--gray-500);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.15s;
}

.nav-btn:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.nav-btn.active {
    background: var(--primary-light);
    color: var(--primary);
}

/* Onboarding */
.onboarding-container {
    max-width: 480px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.onboarding-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.onboarding-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 1rem 0 0.5rem;
}

.subtitle {
    color: var(--gray-500);
    font-size: 1rem;
}

.onboarding-form {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.onboarding-form h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: border-color 0.15s;
    background: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.option-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.option-group.vertical {
    flex-direction: column;
}

.option-btn {
    flex: 1;
    min-width: 120px;
    padding: 0.625rem 1rem;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.15s;
}

.option-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.option-btn.selected {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.btn-primary {
    width: 100%;
    padding: 0.875rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.15s;
}

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

.arrow {
    font-size: 1.25rem;
}

/* Dashboard */
.dashboard {
    max-width: 1200px;
    margin: 0 auto;
    padding: 84px 1.5rem 1.5rem;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.dashboard-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.badge {
    display: inline-flex;
    padding: 0.25rem 0.75rem;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: 0.5rem;
}

.badge.secondary {
    background: var(--gray-100);
    color: var(--gray-600);
}

.btn-icon {
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.875rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-icon:hover {
    background: var(--gray-50);
}

/* Countdown Grid */
.countdown-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.countdown-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--gray-300);
}

.countdown-card.urgent {
    border-left-color: var(--danger);
}

.countdown-card.warning {
    border-left-color: var(--warning);
}

.countdown-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.countdown-icon {
    font-size: 1.25rem;
}

.countdown-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-600);
}

.countdown-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.countdown-unit {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.countdown-date {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-bottom: 1rem;
}

.progress-bar {
    height: 6px;
    background: var(--gray-100);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 9999px;
    transition: width 0.3s;
}

.countdown-card.urgent .progress-fill {
    background: var(--danger);
}

.countdown-card.warning .progress-fill {
    background: var(--warning);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.panel {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

.panel.full-width {
    grid-column: 1 / -1;
}

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

.panel-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
}

.completion-badge {
    padding: 0.25rem 0.75rem;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    background: var(--warning);
    color: white;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.active {
    background: var(--success);
}

/* Checklist */
.checklist {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.15s;
}

.checklist-item:hover {
    background: var(--gray-100);
}

.checklist-item.completed {
    opacity: 0.7;
}

.checklist-item.completed .checklist-text {
    text-decoration: line-through;
    color: var(--gray-400);
}

.checklist-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    cursor: pointer;
}

.checklist-item.completed .checklist-checkbox {
    background: var(--success);
    border-color: var(--success);
}

.checklist-checkbox::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: 700;
    display: none;
}

.checklist-item.completed .checklist-checkbox::after {
    display: block;
}

.checklist-text {
    flex: 1;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.checklist-meta {
    font-size: 0.75rem;
    color: var(--gray-400);
}

/* VAT Timeline */
.vat-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.timeline-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    position: relative;
}

.timeline-item:not(:last-child)::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 28px;
    bottom: -4px;
    width: 2px;
    background: var(--gray-200);
}

.timeline-item.completed .timeline-dot {
    background: var(--success);
    border-color: var(--success);
}

.timeline-item.active .timeline-dot {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.timeline-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--gray-300);
    background: white;
    flex-shrink: 0;
    margin-top: 2px;
}

.timeline-content {
    flex: 1;
}

.timeline-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-800);
}

.timeline-date {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
}

/* Compliance Grid */
.compliance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.compliance-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.25rem;
    background: var(--gray-50);
    border-radius: var(--radius);
}

.compliance-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.compliance-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.compliance-status {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
}

.compliance-status.done {
    background: #d1fae5;
    color: #065f46;
}

.compliance-status.warning {
    background: #fef3c7;
    color: #92400e;
}

.compliance-status.pending {
    background: #fee2e2;
    color: #991b1b;
}

/* Alerts */
.alerts-container,
.accountant-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 84px 1.5rem 1.5rem;
}

.screen-header {
    margin-bottom: 1.5rem;
}

.screen-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.15s;
}

.filter-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.alerts-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.alert-item {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--gray-300);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
}

.alert-item:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.alert-item.urgent {
    border-left-color: var(--danger);
}

.alert-item.warning {
    border-left-color: var(--warning);
}

.alert-item.info {
    border-left-color: var(--primary);
}

.alert-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.alert-channel {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
}

.alert-time {
    font-size: 0.75rem;
    color: var(--gray-400);
}

.alert-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.alert-body {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.alert-actions {
    display: flex;
    gap: 0.5rem;
}

.alert-action-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.15s;
}

.alert-action-btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.alert-action-btn.primary {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.alert-action-btn.primary:hover {
    background: var(--primary-dark);
}

/* Accountant */
.accountant-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.btn-secondary {
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    cursor: pointer;
    transition: all 0.15s;
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.shared-checklist {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.shared-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem;
    background: var(--gray-50);
    border-radius: var(--radius);
}

.shared-icon {
    font-size: 1.25rem;
}

.shared-info {
    flex: 1;
}

.shared-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-800);
}

.shared-meta {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
}

.shared-status {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.shared-status.pending {
    background: #fef3c7;
    color: #92400e;
}

.shared-status.review {
    background: #dbeafe;
    color: #1e40af;
}

.shared-status.done {
    background: #d1fae5;
    color: #065f46;
}

/* Document Exchange */
.document-exchange {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.doc-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem;
    background: var(--gray-50);
    border-radius: var(--radius);
}

.doc-icon {
    font-size: 1.5rem;
}

.doc-info {
    flex: 1;
}

.doc-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-800);
}

.doc-meta {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
}

.doc-status {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.doc-status.review {
    background: #fef3c7;
    color: #92400e;
}

.doc-status.received {
    background: #dbeafe;
    color: #1e40af;
}

.doc-status.approved {
    background: #d1fae5;
    color: #065f46;
}

/* Activity Log */
.activity-log {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.activity-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-100);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-text {
    font-size: 0.875rem;
    color: var(--gray-700);
}

.activity-text strong {
    color: var(--gray-900);
}

.activity-time {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem;
    border-bottom: 1px solid var(--gray-100);
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-400);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    transition: all 0.15s;
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-600);
}

.modal-body {
    padding: 1.25rem;
    overflow-y: auto;
}

/* Scenarios */
.scenarios-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.scenario-item {
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.15s;
}

.scenario-item:hover {
    background: var(--gray-100);
}

.scenario-item.active {
    background: var(--primary-light);
    border: 1px solid var(--primary);
}

.scenario-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.scenario-desc {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.scenario-meta {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav {
        padding: 0 1rem;
    }
    
    .nav-links {
        gap: 0;
    }
    
    .nav-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
    }
    
    .dashboard,
    .alerts-container,
    .accountant-container {
        padding: 84px 1rem 1rem;
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .countdown-value {
        font-size: 2.5rem;
    }
    
    .compliance-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
}

@media (max-width: 480px) {
    .onboarding-container {
        padding: 1.5rem 1rem;
    }
    
    .onboarding-form {
        padding: 1.5rem;
    }
    
    .countdown-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid,
    .accountant-grid {
        grid-template-columns: 1fr;
    }
    
    .compliance-grid {
        grid-template-columns: 1fr;
    }
    
    .alert-actions {
        flex-wrap: wrap;
    }
    
    /* Ensure select text is readable on small screens */
    .form-group select {
        font-size: 0.875rem;
        padding: 0.75rem 2rem 0.75rem 0.75rem;
        width: 100%;
        min-width: 0;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
        appearance: none;
        -webkit-appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 0.75rem center;
    }
}