/* ============================================
   APPLE SCANS & DIAGNOSTICS CENTER
   Premium Hospital-Grade Design System
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Primary Colors */
    --primary: #0066CC;
    --primary-light: #E8F4FD;
    --primary-dark: #004C99;
    
    /* Semantic Colors */
    --success: #34C759;
    --success-light: #E8F9ED;
    --warning: #FF9500;
    --warning-light: #FFF4E5;
    --error: #FF3B30;
    --error-light: #FFEBEA;
    --info: #5856D6;
    --info-light: #EEEEFF;
    
    /* Neutral Colors */
    --bg-primary: #F5F7FA;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #EEF2F6;
    
    /* Text Colors */
    --text-primary: #1D2939;
    --text-secondary: #475467;
    --text-tertiary: #98A2B3;
    --text-inverse: #FFFFFF;
    
    /* Borders */
    --border-light: #E4E7EC;
    --border-medium: #D0D5DD;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.05);
    --shadow-md: 0 4px 12px rgba(16, 24, 40, 0.08);
    --shadow-lg: 0 8px 24px rgba(16, 24, 40, 0.12);
    --shadow-xl: 0 16px 48px rgba(16, 24, 40, 0.16);
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    --font-size-5xl: 48px;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-md { font-size: var(--font-size-md); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }

.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-primary-color { color: var(--primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

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

.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-light);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.main-content {
    flex: 1;
    margin-left: 280px;
    padding: var(--space-xl);
    min-height: 100vh;
}

.page-header {
    margin-bottom: var(--space-xl);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.page-subtitle {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
}

/* ============================================
   SIDEBAR
   ============================================ */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-light);
    margin-bottom: var(--space-lg);
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    line-height: 1.2;
}

.logo-tagline {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-item a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.nav-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-light);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.user-avatar {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--success) 0%, #2DA44E 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: var(--font-size-md);
}

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

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

.user-role {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

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

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}

/* Metric Cards */
.metric-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.metric-card.primary::before { background: linear-gradient(90deg, var(--primary), #3399FF); }
.metric-card.success::before { background: linear-gradient(90deg, var(--success), #5DD879); }
.metric-card.warning::before { background: linear-gradient(90deg, var(--warning), #FFB340); }
.metric-card.info::before { background: linear-gradient(90deg, var(--info), #7C7AE8); }

.metric-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.metric-card.primary .metric-icon { background: var(--primary-light); color: var(--primary); }
.metric-card.success .metric-icon { background: var(--success-light); color: var(--success); }
.metric-card.warning .metric-icon { background: var(--warning-light); color: var(--warning); }
.metric-card.info .metric-icon { background: var(--info-light); color: var(--info); }

.metric-value {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-change {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    margin-top: var(--space-md);
}

.metric-change.positive {
    background: var(--success-light);
    color: var(--success);
}

.metric-change.negative {
    background: var(--error-light);
    color: var(--error);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--text-inverse);
    box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-light);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-medium);
    color: var(--text-primary);
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #2DA44E 100%);
    color: var(--text-inverse);
    box-shadow: 0 2px 8px rgba(52, 199, 89, 0.3);
}

.btn-success:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(52, 199, 89, 0.4);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #E68600 100%);
    color: var(--text-inverse);
}

.btn-error {
    background: linear-gradient(135deg, var(--error) 0%, #E62E24 100%);
    color: var(--text-inverse);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--space-lg) var(--space-xl);
    font-size: var(--font-size-md);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.form-label.required::after {
    content: '*';
    color: var(--error);
    margin-left: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    font-size: var(--font-size-md);
    font-family: inherit;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-input.error {
    border-color: var(--error);
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-xs);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--error);
    margin-top: var(--space-xs);
}

.form-row {
    display: grid;
    gap: var(--space-lg);
}

.form-row.cols-2 { grid-template-columns: repeat(2, 1fr); }
.form-row.cols-3 { grid-template-columns: repeat(3, 1fr); }
.form-row.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================
   TABLES
   ============================================ */
.table-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
}

.table th {
    background: var(--bg-tertiary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-light);
}

.table td {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
}

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

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--bg-primary);
}

/* ============================================
   STATUS BADGES
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

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

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

.badge-error {
    background: var(--error-light);
    color: var(--error);
}

.badge-info {
    background: var(--info-light);
    color: var(--info);
}

.badge-neutral {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background: currentColor;
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
.grid-cols-6 { grid-template-columns: repeat(6, 1fr); }

/* ============================================
   UTILITIES
   ============================================ */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.mt-auto { margin-top: auto; }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

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

.hidden { display: none; }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideInLeft {
    from { 
        opacity: 0;
        transform: translateX(-20px);
    }
    to { 
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

.animate-fadeIn { animation: fadeIn 0.4s ease; }
.animate-slideUp { animation: slideUp 0.5s ease; }
.animate-slideInLeft { animation: slideInLeft 0.4s ease; }
.animate-pulse { animation: pulse 2s infinite; }

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

/* ============================================
   SCAN/TEST CARDS
   ============================================ */
.scan-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.scan-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.scan-card.selected {
    border-color: var(--primary);
    background: var(--primary-light);
}

.scan-card.selected::after {
    content: '✓';
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.scan-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--primary);
}

.scan-card-name {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.scan-card-desc {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.4;
}

.scan-card-price {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary);
}

.scan-card-price::before {
    content: '₹';
    font-size: var(--font-size-sm);
    font-weight: 400;
    margin-right: 2px;
}

/* ============================================
   BILLING PANEL
   ============================================ */
.billing-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    position: sticky;
    top: var(--space-xl);
}

.billing-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-light);
}

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

.billing-item-name {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 500;
}

.billing-item-price {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.billing-summary {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 2px dashed var(--border-light);
}

.billing-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.billing-total {
    display: flex;
    justify-content: space-between;
    padding-top: var(--space-md);
    margin-top: var(--space-md);
    border-top: 2px solid var(--text-primary);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

/* ============================================
   INVOICE
   ============================================ */
.invoice {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    max-width: 800px;
    margin: 0 auto;
}

.invoice-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: var(--space-xl);
    border-bottom: 2px solid var(--border-light);
    margin-bottom: var(--space-xl);
}

.invoice-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.invoice-title {
    text-align: right;
}

.invoice-title h2 {
    font-size: var(--font-size-2xl);
    color: var(--primary);
    margin-bottom: var(--space-xs);
}

.invoice-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.invoice-section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-sm);
}

.invoice-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-xl) 0;
}

.invoice-table th,
.invoice-table td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.invoice-table th {
    background: var(--bg-tertiary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.invoice-totals {
    display: flex;
    justify-content: flex-end;
}

.invoice-totals-table {
    width: 300px;
}

.invoice-totals-table tr td {
    padding: var(--space-sm) var(--space-md);
}

.invoice-totals-table tr td:last-child {
    text-align: right;
    font-weight: 600;
}

.invoice-totals-table tr.total td {
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-top: 2px solid var(--text-primary);
    padding-top: var(--space-md);
}

/* ============================================
   WHATSAPP PREVIEW
   ============================================ */
.whatsapp-preview {
    background: #E5DDD5;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    max-width: 360px;
}

.whatsapp-message {
    background: white;
    border-radius: var(--radius-md);
    border-top-left-radius: 0;
    padding: var(--space-md);
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    position: relative;
}

.whatsapp-message::before {
    content: '';
    position: absolute;
    top: 0;
    left: -8px;
    border-width: 0 8px 8px 0;
    border-style: solid;
    border-color: transparent white transparent transparent;
}

.whatsapp-message-text {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: 1.5;
}

.whatsapp-message-time {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    text-align: right;
    margin-top: var(--space-sm);
}

/* ============================================
   FILE UPLOAD
   ============================================ */
.upload-zone {
    border: 2px dashed var(--border-medium);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: var(--bg-primary);
}

.upload-zone:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.upload-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: scale(1.02);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    color: var(--primary);
}

.upload-text {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.upload-hint {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ============================================
   CHARTS CONTAINER
   ============================================ */
.chart-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid var(--border-light);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

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

.chart-legend {
    display: flex;
    gap: var(--space-lg);
    font-size: var(--font-size-xs);
}

.chart-legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.chart-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
}

/* ============================================
   QR CODE
   ============================================ */
.qr-container {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    border: 1px solid var(--border-light);
}

.qr-code {
    width: 180px;
    height: 180px;
    margin: 0 auto var(--space-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-patient-id {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary);
    font-family: 'Courier New', monospace;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1200px) {
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-5, .grid-cols-6 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-cols-2, .grid-cols-3 { grid-template-columns: 1fr; }
    .form-row.cols-2, .form-row.cols-3 { grid-template-columns: 1fr; }
    
    .invoice-details {
        grid-template-columns: 1fr;
    }
    
    .metric-card {
        padding: var(--space-lg);
    }
    
    .metric-value {
        font-size: var(--font-size-3xl);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .sidebar,
    .btn,
    .no-print {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
        padding: 0;
    }
    
    .invoice {
        box-shadow: none;
        border: none;
        padding: 0;
    }
}