:root {
    --color-bg: #f7f7f9;
    --color-surface: #ffffff;
    --color-lavender: #E6E6FA;
    --color-lavender-dark: #d0d0f0;
    --color-mint: #F5FFFA;
    --color-mint-dark: #e0f5ea;
    --color-gold: #FFF8E7;
    --color-text: #333333;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    --color-border: #e8e8ec;
    --color-primary: #7c7fd4;
    --color-primary-hover: #6a6dc4;
    --color-danger: #e57373;
    --color-danger-hover: #d16060;
    --color-success: #81c784;
    --shadow-soft: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.08);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.25s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    overflow-x: hidden;
}

#app {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-brand {
    padding: 28px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--color-border);
}

.brand-icon {
    color: var(--color-primary);
    width: 28px;
    height: 28px;
}

.sidebar-brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.5px;
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    width: 100%;
    text-align: left;
    position: relative;
}

.nav-item:hover {
    background: rgba(124, 127, 212, 0.1);
    color: var(--color-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(124, 127, 212, 0.3);
}

.nav-item.active i {
    color: white;
}

.nav-item i {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--color-border);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-bar {
    background: var(--color-surface);
    padding: 16px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    padding: 4px;
}

.top-bar h2 {
    font-size: 1.35rem;
    font-weight: 600;
}

.top-bar-actions {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.views-container {
    flex: 1;
    padding: 24px 28px;
    overflow-y: auto;
}

/* Views */
.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

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

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 18px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon i {
    width: 24px;
    height: 24px;
}

.bg-lavender { background: var(--color-lavender); color: var(--color-primary); }
.bg-mint { background: var(--color-mint); color: #5a9e7c; }
.bg-gold { background: var(--color-gold); color: #c49b3c; }

.stat-info h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text);
}

.stat-info p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

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

/* Panels */
.panel {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.panel-header {
    padding: 18px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
}

.panel-header h3 {
    font-size: 1.05rem;
    font-weight: 600;
}

.client-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

@media (max-width: 1024px) {
    .client-detail-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .client-detail-grid {
        grid-template-columns: 1fr;
    }
}

/* Lists */
.list-container {
    padding: 8px;
}

.list-item {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: default;
}

.list-item:hover {
    background: var(--color-bg);
}

.list-item-main {
    display: flex;
    align-items: center;
    gap: 14px;
}

.list-item-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-lavender);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.list-item-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
}

.list-item-info p {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.list-item-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.list-item-actions {
    display: flex;
    gap: 6px;
    margin-left: 40px;
    opacity: 0;
    transition: var(--transition);
}

.list-item:hover .list-item-actions {
    opacity: 1;
}

.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-pending { background: var(--color-gold); color: #9a7d3c; }
.badge-completed { background: var(--color-mint); color: #4a8a6a; }
.badge-cancelled { background: #ffebee; color: #c62828; }

/* Toolbar */
.view-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.view-toolbar .form-input {
    max-width: 240px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

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

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

.btn-secondary {
    background: var(--color-lavender);
    color: var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-lavender-dark);
}

.btn-danger {
    background: transparent;
    color: var(--color-danger);
    padding: 6px;
}

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

.btn-small {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-icon {
    padding: 6px;
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-icon:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

/* Forms */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-surface);
    transition: var(--transition);
}

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

.form-textarea {
    min-height: 80px;
    resize: vertical;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 20px;
    backdrop-filter: blur(4px);
}

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

.modal {
    background: var(--color-surface);
    border-radius: var(--radius);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-medium);
    animation: modalSlide 0.25s ease;
}

@keyframes modalSlide {
    from { opacity: 0; transform: scale(0.96) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

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

.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

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

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    border-top: 1px solid var(--color-border);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Ticket preview */
.ticket-preview {
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    padding: 20px;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    line-height: 1.7;
    border: 1px dashed var(--color-border);
}

/* Responsive */
@media (max-width: 900px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .menu-toggle {
        display: flex;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .views-container {
        padding: 16px;
    }
    .top-bar {
        padding: 12px 16px;
    }
    .list-item-actions {
        opacity: 1;
    }
}

@media (max-width: 480px) {
    .view-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .view-toolbar .form-input {
        max-width: 100%;
    }
    .modal {
        max-width: 100%;
        max-height: 95vh;
    }
}

/* Week Calendar Styles */
.week-calendar-grid {
    display: flex;
    flex-direction: column;
    overflow-x: auto;
}

.week-calendar-header {
    display: grid;
    grid-template-columns: 80px repeat(7, minmax(150px, 1fr));
    gap: 1px;
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.week-calendar-row {
    display: grid;
    grid-template-columns: 80px repeat(7, minmax(150px, 1fr));
    gap: 1px;
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
}

/* Day Calendar Styles */
.day-calendar-grid {
    display: flex;
    flex-direction: column;
    max-width: 600px;
}

.day-calendar-header {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 1px;
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
}

.day-calendar-row {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 1px;
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
}

.day-column-full {
    padding: 10px;
    text-align: left;
}

.time-column {
    padding: 10px;
    background: #f9f9f9;
    border-right: 1px solid #e0e0e0;
    font-size: 0.85rem;
    text-align: center;
    font-weight: 500;
}

.day-column {
    padding: 10px;
    text-align: center;
    border-right: 1px solid #e0e0e0;
}

.day-column.today {
    background: #e3f2fd;
}

.day-cell {
    min-height: 60px;
    position: relative;
}

.appointment-slot {
    background: #4CAF50;
    color: white;
    padding: 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    margin-bottom: 4px;
    text-align: left;
}

.appointment-slot:hover {
    background: #45a049;
}

.appointment-slot strong {
    display: block;
    margin-bottom: 2px;
}

.empty-state-mini {
    color: #999;
    font-size: 0.85rem;
    text-align: center;
    margin: 20px 0;
}