/**
 * Phototherapy Clinic Finder - Stylesheet
 * Mobile-first responsive design
 * Version: 1.0.0
 */

/* ========== CSS Variables ========== */
:root {
    /* Colors - matching drmuni.com sage green palette */
    --primary-color: #7a9a8a;
    --primary-hover: #5f7f6f;
    --primary-light: #e8f0ec;
    --secondary-color: #8b7355;
    --secondary-hover: #6d5a42;
    --success-color: #7a9a8a;
    --warning-color: #c9a96e;
    --danger-color: #c17c74;
    
    /* Neutral Colors */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Semantic Colors - warm paper-like background */
    --bg-color: #f0ece4;
    --card-bg: #faf8f5;
    --text-primary: #3d3d3d;
    --text-secondary: #6b6b6b;
    --border-color: #ddd8cf;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Typography */
    --font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

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

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

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========== Header ========== */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 28px;
    height: 28px;
    stroke: currentColor;
}

.logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.back-to-main {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.back-to-main:hover {
    color: white;
}

.logo-divider {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-sm);
}

.data-version {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* ========== Main Container ========== */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    width: 100%;
    min-width: 0;
    overflow-x: hidden;
}

@media (min-width: 1024px) {
    .main-container {
        display: grid;
        grid-template-columns: 400px 1fr;
        align-items: start;
    }
}

/* ========== Search Section ========== */
.search-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
    min-width: 0;
}

.results-section {
    width: 100%;
    min-width: 0;
}

.search-container {
    background: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.search-input-group {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--gray-400);
    pointer-events: none;
}

#address-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) 2.75rem;
    font-size: var(--font-size-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#address-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

#address-input::placeholder {
    color: var(--gray-400);
}

.clear-btn {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    opacity: 0;
    visibility: hidden;
}

.clear-btn.visible {
    opacity: 1;
    visibility: visible;
}

.clear-btn:hover {
    background: var(--gray-100);
    color: var(--gray-600);
}

.clear-btn svg {
    width: 16px;
    height: 16px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-md);
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

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

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--border-color);
    width: 100%;
}

.btn-secondary:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

.btn-full {
    width: 100%;
}

/* Location Status */
.location-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    animation: fadeIn var(--transition-normal);
}

.status-icon {
    font-size: var(--font-size-lg);
}

/* Privacy Notice */
.privacy-notice {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: #ecfdf5;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--success-color);
}

.privacy-notice svg {
    width: 20px;
    height: 20px;
    color: var(--success-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.privacy-notice p {
    font-size: var(--font-size-sm);
    color: var(--gray-700);
    line-height: 1.5;
}

/* HTTPS Warning */
.https-warning {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: #fef3c7;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--warning-color);
}

.https-warning svg {
    width: 20px;
    height: 20px;
    color: var(--warning-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.https-warning p {
    font-size: var(--font-size-sm);
    color: var(--gray-800);
    line-height: 1.5;
}

/* ========== Results Section ========== */
.results-section {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--gray-50);
}

.results-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.results-count {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background: var(--gray-200);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
}

/* Clinic List */
.clinic-list {
    max-height: 600px;
    overflow-y: auto;
}

.clinic-list::-webkit-scrollbar {
    width: 8px;
}

.clinic-list::-webkit-scrollbar-track {
    background: var(--gray-100);
}

.clinic-list::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--radius-full);
}

.clinic-list::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Clinic Card */
.clinic-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.clinic-card:hover {
    background: var(--gray-50);
}

.clinic-card.active {
    background: var(--primary-light);
    border-left: 4px solid var(--primary-color);
}

.clinic-marker {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.clinic-card.active .clinic-marker {
    background: var(--primary-hover);
    transform: scale(1.1);
}

.clinic-info {
    flex: 1;
    min-width: 0;
}

.clinic-name {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.clinic-address {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.clinic-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.clinic-distance {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--success-color);
}

.clinic-distance svg {
    width: 14px;
    height: 14px;
}

.clinic-machines {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.machine-tag {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gray-100);
    color: var(--gray-600);
    border-radius: var(--radius-sm);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--gray-500);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    color: var(--gray-300);
}

.empty-state p {
    font-size: var(--font-size-md);
}

/* ========== Map Section ========== */
.map-section {
    grid-column: 1 / -1;
    order: 3;
    width: 100%;
    min-width: 0;
}

.map-container {
    width: 100%;
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--gray-100);
}

@media (min-width: 1024px) {
    .map-section {
        grid-column: 2;
        grid-row: 1 / span 2;
    }
    
    .map-container {
        height: 100%;
        min-height: 600px;
    }
}

.map-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--gray-500);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

/* Custom Map Markers */
.custom-marker {
    width: 32px;
    height: 32px;
    background: var(--primary-color);
    border: 3px solid white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.custom-marker:hover {
    transform: scale(1.1);
}

.custom-marker.active {
    background: var(--danger-color);
    transform: scale(1.2);
    z-index: 1000 !important;
}

.user-marker {
    width: 20px;
    height: 20px;
    background: var(--success-color);
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    position: relative;
}

.user-marker::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: rgba(16, 185, 129, 0.3);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

/* Map Info Window */
.gm-style .gm-style-iw-c {
    padding: 0 !important;
    border-radius: var(--radius-lg) !important;
}

.gm-style .gm-style-iw-d {
    overflow: hidden !important;
}

.info-window {
    padding: var(--spacing-md);
    min-width: 200px;
}

.info-window h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.info-window p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.info-window .distance {
    font-weight: 600;
    color: var(--success-color);
}

/* ========== Modal ========== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal.hidden {
    display: none;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn var(--transition-fast);
}

.modal-content {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    z-index: 1;
}

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

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-marker {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.info-row {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.info-row:last-of-type {
    margin-bottom: 0;
}

.info-row svg {
    width: 20px;
    height: 20px;
    color: var(--gray-400);
    flex-shrink: 0;
    margin-top: 2px;
}

.info-row label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.info-row p {
    font-size: var(--font-size-md);
    color: var(--text-primary);
    line-height: 1.5;
}

.distance-row svg {
    color: var(--success-color);
}

.distance-row p {
    color: var(--success-color);
    font-weight: 600;
}

.modal-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--gray-50);
}

/* ========== Footer ========== */
.footer {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
}

.footer a {
    color: var(--primary-color);
    font-weight: 500;
}

.footer a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.footer p + p {
    margin-top: var(--spacing-xs);
    color: var(--gray-400);
}

/* ========== Responsive Adjustments ========== */
@media (max-width: 768px) {
    .header-content {
        padding: 0 var(--spacing-md);
    }
    
    .logo h1 {
        font-size: var(--font-size-lg);
    }
    
    .main-container {
        padding: var(--spacing-md);
        gap: var(--spacing-lg);
    }
    
    .search-container {
        padding: var(--spacing-md);
    }
    
    .clinic-card {
        padding: var(--spacing-md);
    }
    
    .map-container {
        height: 300px;
    }
    
    .modal-content {
        max-height: 95vh;
    }
    
    .modal-actions {
        position: sticky;
        bottom: 0;
    }
}

@media (max-width: 480px) {
    .clinic-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ========== Print Styles ========== */
@media print {
    .header,
    .search-section,
    .modal,
    .footer {
        display: none !important;
    }
    
    .main-container {
        display: block;
    }
    
    .clinic-list {
        max-height: none;
        overflow: visible;
    }
    
    .clinic-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* ========== Accessibility ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible styles */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --border-color: #000000;
    }
}
/* ========== Equipment Filters (Inline) ========== */
.filter-inline {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(122, 154, 138, 0.2);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    width: 100%;
}

.filter-inline-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.filter-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    cursor: pointer;
    transition: all 0.2s;
    border-radius: 4px;
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(122, 154, 138, 0.3);
}

.checkbox-label:hover {
    background-color: rgba(255, 255, 255, 0.9);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-label span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    user-select: none;
    white-space: nowrap;
}

.checkbox-label input[type="checkbox"]:checked + span {
    color: var(--text-primary);
    font-weight: 500;
}

.checkbox-label:has(input[type="checkbox"]:checked) {
    background-color: rgba(122, 154, 138, 0.15);
    border-color: var(--primary-color);
}

@media (max-width: 640px) {
    .filter-inline {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .filter-checkboxes {
        width: 100%;
        gap: var(--spacing-xs);
    }
    
    .checkbox-label {
        font-size: 0.75rem;
        padding: 2px 6px;
    }
    
    .checkbox-label span {
        font-size: 0.75rem;
    }
    
    .checkbox-label input[type="checkbox"] {
        width: 12px;
        height: 12px;
    }
    
    .filter-inline-label {
        font-size: 0.8rem;
    }
}