/* ============================================
   MediCare Clinic - Main Stylesheet
   A modern, elegant medical website design
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors - Warm, trustworthy medical palette */
    --color-primary: #1a5f7a;
    --color-primary-dark: #134b61;
    --color-primary-light: #2980b9;
    --color-accent: #e8505b;
    --color-accent-light: #ff6b6b;
    
    --color-bg: #faf9f7;
    --color-bg-alt: #f0eeeb;
    --color-bg-card: #ffffff;
    
    --color-text: #2d3436;
    --color-text-light: #636e72;
    --color-text-muted: #b2bec3;
    
    --color-border: #dfe6e9;
    --color-success: #00b894;
    --color-warning: #fdcb6e;
    
    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

button, input, select, textarea {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

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

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

.btn-full {
    width: 100%;
}

.btn-arrow {
    transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    font-weight: 500;
    color: var(--color-text-light);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.btn-book {
    background: var(--color-accent);
    color: white;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
}

.nav-link.btn-book::after {
    display: none;
}

.nav-link.btn-book:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(80px + var(--space-3xl)) var(--space-lg) var(--space-3xl);
    overflow: hidden;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(rgba(26, 95, 122, 0.4), rgba(26, 95, 122, 0.5)),
        url('../img/poliklinika_tachov.png') center/cover no-repeat;
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: url("data:image/svg+xml,%3Csvg width='600' height='600' viewBox='0 0 600 600' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M300 50 L350 250 L550 300 L350 350 L300 550 L250 350 L50 300 L250 250 Z' fill='none' stroke='%231a5f7a' stroke-width='1' opacity='0.1'/%3E%3C/svg%3E") no-repeat center;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

.hero-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-xl);
    max-width: 900px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease-out;
}

.hero-content {
    max-width: 100%;
    margin-bottom: var(--space-2xl);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--color-primary);
}

.hero-title {
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--space-xl);
    max-width: 100%;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--space-3xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    animation: fadeInUp 0.8s ease-out 0.3s both;
    flex-wrap: wrap;
    justify-content: center;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-3xl);
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-desc {
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    background: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.service-card {
    background: var(--color-bg-card);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.service-card h3 {
    margin-bottom: var(--space-sm);
}

.service-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ============================================
   Doctors Section
   ============================================ */
.doctors {
    background: var(--color-bg);
}

.doctors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--space-xl);
}

.doctor-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.doctor-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.doctor-image {
    position: relative;
    padding: var(--space-xl);
    display: flex;
    justify-content: center;
    background: var(--color-bg-alt);
}

.doctor-avatar {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 600;
    color: white;
    box-shadow: var(--shadow-lg);
}

.doctor-specialty-badge {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    background: var(--color-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
}

.doctor-info {
    padding: var(--space-xl);
}

.doctor-name {
    font-size: 1.35rem;
    margin-bottom: var(--space-xs);
}

.doctor-specialty {
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.doctor-bio {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
}

.doctor-meta {
    display: flex;
    justify-content: space-between;
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-lg);
}

.rating {
    color: #f1c40f;
    font-weight: 600;
}

.rating small {
    color: var(--color-text-light);
    margin-left: var(--space-xs);
}

.experience {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.doctor-actions {
    display: flex;
    gap: var(--space-md);
}

.doctor-actions .btn {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
}

/* ============================================
   Quick Booking Section
   ============================================ */
.quick-booking {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
}

.booking-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.booking-info .section-tag {
    color: rgba(255, 255, 255, 0.7);
}

.booking-info h2 {
    color: white;
    margin-bottom: var(--space-md);
}

.booking-info p {
    opacity: 0.9;
    margin-bottom: var(--space-xl);
}

.booking-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.booking-features li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

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

.booking-form-container {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-xl);
}

.booking-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    padding: var(--space-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.1);
}

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

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: var(--color-bg-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-info h2 {
    margin-bottom: var(--space-md);
}

.contact-info > p {
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    display: flex;
    gap: var(--space-md);
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    margin-bottom: var(--space-xs);
}

.contact-item p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.contact-map {
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.map-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e0e5ec 0%, #d1d9e6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-overlay {
    text-align: center;
    color: var(--color-text-light);
}

.map-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-text);
    color: white;
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-brand .logo-icon {
    background: var(--color-accent);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-links h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: var(--space-lg);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-newsletter h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: var(--space-md);
}

.footer-newsletter p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.newsletter-form {
    display: flex;
    gap: var(--space-sm);
}

.newsletter-form input {
    flex: 1;
    padding: var(--space-md);
    border: none;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.newsletter-form button {
    padding: var(--space-md) var(--space-lg);
    background: var(--color-accent);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.newsletter-form button:hover {
    background: var(--color-accent-light);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* ============================================
   Doctor Profile Page Styles
   ============================================ */
.doctor-profile {
    padding-top: 100px;
}

.profile-header {
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    padding: var(--space-3xl) 0;
}

.profile-header-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.profile-avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 600;
    color: white;
    box-shadow: var(--shadow-xl);
}

.profile-title h1 {
    margin-bottom: var(--space-sm);
}

.profile-specialty {
    color: var(--color-primary);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.profile-meta {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-light);
}

.profile-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-3xl);
    padding: var(--space-3xl) 0;
}

.profile-main h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-border);
}

.profile-main h2:not(:first-child) {
    margin-top: var(--space-2xl);
}

.profile-main p {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.profile-main ul {
    color: var(--color-text-light);
    padding-left: var(--space-lg);
}

.profile-main li {
    margin-bottom: var(--space-sm);
    position: relative;
    padding-left: var(--space-md);
}

.profile-main li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: bold;
}

/* ============================================
   Booking Calendar Styles
   ============================================ */
.booking-sidebar {
    position: sticky;
    top: 100px;
}

.booking-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
}

.booking-card h3 {
    margin-bottom: var(--space-lg);
    text-align: center;
}

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

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

.calendar-nav {
    background: var(--color-bg-alt);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.calendar-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.weekday {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    padding: var(--space-sm);
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-xs);
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.calendar-day:hover:not(.disabled):not(.empty) {
    background: var(--color-bg-alt);
}

.calendar-day.today {
    border-color: var(--color-primary);
}

.calendar-day.selected {
    background: var(--color-primary);
    color: white;
}

.calendar-day.disabled {
    color: var(--color-text-muted);
    cursor: not-allowed;
}

.calendar-day.empty {
    cursor: default;
}

.calendar-day.has-slots::after {
    content: '';
    position: absolute;
    bottom: 4px;
    width: 4px;
    height: 4px;
    background: var(--color-success);
    border-radius: 50%;
}

.time-slots {
    margin-bottom: var(--space-xl);
}

.time-slots-header {
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.time-slots-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.time-slot {
    padding: var(--space-sm) var(--space-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.time-slot:hover:not(.disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.time-slot.selected {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.time-slot.disabled {
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    cursor: not-allowed;
    text-decoration: line-through;
}

.no-slots {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--space-xl);
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
}

.booking-summary {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.booking-summary p {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
}

.booking-summary p:last-child {
    margin-bottom: 0;
}

.booking-summary strong {
    color: var(--color-text);
}

/* Booking Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

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

.modal-header h3 {
    font-size: 1.5rem;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-accent);
    color: white;
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.success-message {
    text-align: center;
    padding: var(--space-xl);
}

.success-icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
}

.success-message h3 {
    color: var(--color-success);
    margin-bottom: var(--space-md);
}

.success-message p {
    color: var(--color-text-light);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .booking-wrapper,
    .contact-grid,
    .profile-content {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }
    
    .profile-content {
        gap: var(--space-xl);
    }
    
    .booking-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--space-xl);
        gap: var(--space-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .doctors-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .profile-header-content {
        grid-template-columns: 1fr;
        text-align: center;
        justify-items: center;
    }
    
    .profile-meta {
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .time-slots-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .doctor-actions {
        flex-direction: column;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.btn-book {
    animation: pulse 2s infinite;
}

.btn-book:hover {
    animation: none;
}

/* Loading state */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Scroll animations */
[data-aos] {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}