@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Color Palette */
    --bg-app: #f8fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a;
    --border-color: #e2e8f0;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-on-dark: #f8fafc;
    --text-on-dark-secondary: #94a3b8;
    
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-light: #e0e7ff;
    
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

/* Sidebar Styling */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--text-on-dark);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    flex-shrink: 0;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--text-on-dark);
}

.sidebar-logo svg {
    color: var(--accent);
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex-grow: 1;
}

.sidebar-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--text-on-dark-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.sidebar-item a:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-on-dark);
}

.sidebar-item.active a {
    background-color: var(--accent);
    color: white;
}

.sidebar-user {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 16px;
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 13px;
    font-weight: 600;
}

.user-role {
    font-size: 11px;
    color: var(--text-on-dark-secondary);
}

.btn-logout {
    background: transparent;
    border: none;
    color: var(--text-on-dark-secondary);
    font-family: var(--font-sans);
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    width: 100%;
    transition: background 0.2s;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-on-dark);
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    padding: 40px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

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

.header-title h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.header-title p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: white;
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background-color: #f1f5f9;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

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

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.stat-change {
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-change.up {
    color: var(--success);
}

.stat-change.down {
    color: var(--danger);
}

/* Tables */
.table-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

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

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

.crm-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.crm-table th {
    background-color: #f8fafc;
    padding: 12px 24px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.crm-table td {
    padding: 16px 24px;
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.crm-table tbody tr {
    cursor: pointer;
    transition: background-color 0.15s;
}

.crm-table tbody tr:hover {
    background-color: #f8fafc;
}

.crm-table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 50px;
}

.badge-success {
    background-color: var(--success-light);
    color: #065f46;
}

.badge-warning {
    background-color: var(--warning-light);
    color: #92400e;
}

.badge-info {
    background-color: var(--accent-light);
    color: #3730a3;
}

/* Stepper Component */
.stepper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    position: relative;
    padding: 0 40px;
}

.stepper::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 40px;
    right: 40px;
    height: 3px;
    background-color: var(--border-color);
    z-index: 1;
}

.stepper-progress {
    position: absolute;
    top: 20px;
    left: 40px;
    height: 3px;
    background-color: var(--accent);
    z-index: 1;
    transition: width 0.3s ease;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
    background-color: var(--bg-app);
    padding: 0 8px;
    text-decoration: none;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: white;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.step-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.step.active .step-number {
    border-color: var(--accent);
    background-color: var(--accent);
    color: white;
}

.step.active .step-label {
    color: var(--accent);
    font-weight: 600;
}

.step.completed .step-number {
    border-color: var(--success);
    background-color: var(--success);
    color: white;
}

.step.completed .step-label {
    color: var(--success);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-family: var(--font-sans);
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 4px;
    cursor: pointer;
}

.checkbox-label {
    font-size: 13px;
    color: var(--text-secondary);
    user-select: none;
    cursor: pointer;
}

/* Login Page Layout */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top right, var(--accent-light) 0%, var(--bg-app) 70%);
    padding: 20px;
}

.login-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.login-logo svg {
    color: var(--accent);
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.login-actions .btn {
    flex: 1;
}

/* Vehicle Lookup Component */
.plate-lookup-container {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    max-width: 500px;
}

.plate-input {
    font-size: 20px;
    font-weight: 700;
    text-transform: uppercase;
    text-align: center;
    letter-spacing: 0.1em;
    background-color: #fef08a; /* UK Yellow plate background */
    border: 2px solid #eab308;
    color: #1e293b;
    border-radius: var(--radius-md);
}

.plate-input:focus {
    box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.3);
    border-color: #eab308;
}

.dvla-card {
    background-color: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-top: 24px;
    animation: fadeIn 0.3s ease-out;
}

.dvla-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.dvla-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.dvla-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.dvla-item {
    display: flex;
    flex-direction: column;
}

.dvla-label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
}

.dvla-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Document cards & E-signature */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.doc-card {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

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

.doc-info h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 2px;
}

.doc-info p {
    font-size: 12px;
    color: var(--text-secondary);
}

.signature-container {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    background-color: #fafafa;
    padding: 40px 20px;
    text-align: center;
    position: relative;
    cursor: crosshair;
    user-select: none;
    margin-bottom: 24px;
    height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.signature-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.signature-placeholder {
    color: var(--text-muted);
    font-size: 14px;
    z-index: 1;
    pointer-events: none;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: var(--bg-sidebar);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

/* Switch styling for Admin Staff Permissions */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cbd5e1;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--success);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

/* Customer Detail notes section */
.notes-container {
    margin-top: 32px;
}

.notes-area {
    min-height: 120px;
    resize: vertical;
}

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

/* Responsive Rules */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        padding: 16px;
    }
    
    .sidebar-logo {
        margin-bottom: 16px;
    }
    
    .sidebar-menu {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 8px;
    }
    
    .sidebar-user {
        display: none;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .stepper {
        padding: 0 10px;
    }
    
    .stepper::before, .stepper-progress {
        left: 10px;
        right: 10px;
    }
    
    .dvla-grid {
        grid-template-columns: 1fr;
    }
}

/* Calendar Styles */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    border: 1px solid var(--border-color);
    background-color: var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.calendar-header-day {
    background-color: #f8fafc;
    padding: 12px 8px;
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

.calendar-day-cell {
    background-color: white;
    min-height: 110px;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: background-color 0.15s;
}

.calendar-day-cell:hover {
    background-color: #f8fafc;
}

.calendar-day-cell.other-month {
    background-color: #f1f5f9;
    color: var(--text-muted);
}

.calendar-day-number {
    font-size: 13px;
    font-weight: 600;
    align-self: flex-start;
}

.calendar-event {
    font-size: 11px;
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: white;
    cursor: pointer;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.event-indigo {
    background-color: var(--accent);
}

.event-emerald {
    background-color: var(--success);
}

.event-amber {
    background-color: var(--warning);
    color: #92400e;
    background-color: var(--warning-light);
    border: 1px solid #f59e0b;
}

/* Modal styles (General purpose) */
.custom-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.custom-modal-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.custom-modal {
    background-color: white;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    padding: 30px;
    animation: modalSlide 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Document grouped design */
.doc-group-header {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 16px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.doc-group-header::after {
    content: '';
    flex-grow: 1;
    height: 1px;
    background-color: var(--border-color);
}

/* Notification Bell */
.top-bar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 8px;
    gap: 8px;
}

.notification-bell {
    position: relative;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.notification-bell:hover {
    background-color: #f1f5f9;
    border-color: var(--accent);
}

.notification-bell svg {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.notification-bell:hover svg {
    color: var(--accent);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-app);
    animation: badgePulse 2s infinite;
}

@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Notification Dropdown */
.notification-dropdown {
    position: absolute;
    top: 48px;
    right: 0;
    width: 360px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 999;
    opacity: 0;
    transform: translateY(-8px) scale(0.97);
    pointer-events: none;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.notification-dropdown.show {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.notification-dropdown-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.notification-dropdown-header h4 {
    font-size: 14px;
    font-weight: 600;
}

.notification-dropdown-header span {
    font-size: 11px;
    color: var(--text-muted);
}

.notification-list {
    max-height: 320px;
    overflow-y: auto;
}

.notification-item {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.15s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

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

.notification-item:hover {
    background-color: #f8fafc;
}

.notification-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notification-icon.urgent {
    background-color: var(--danger-light);
    color: var(--danger);
}

.notification-icon.due-today {
    background-color: var(--warning-light);
    color: #92400e;
}

.notification-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.notification-body p {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.notification-body small {
    font-size: 11px;
    color: var(--text-muted);
}

.notification-dropdown-footer {
    padding: 10px 16px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.notification-dropdown-footer a {
    font-size: 12px;
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.notification-dropdown-footer a:hover {
    text-decoration: underline;
}

/* Follow-Up Card on Customer Detail */
.followup-card {
    background-color: var(--accent-light);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    margin-top: 16px;
    animation: fadeIn 0.3s ease-out;
}

.followup-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.followup-card-header svg {
    color: var(--accent);
}

.followup-card-header span {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--accent);
    letter-spacing: 0.05em;
}

.followup-card-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.followup-card-body .followup-date {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.followup-card-body .followup-note {
    font-size: 13px;
    color: var(--text-secondary);
}

.followup-card-body .followup-reminder {
    font-size: 11px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 4px;
}

/* Modal slide animation */
@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}