/* ==========================================================================
   DESIGN SYSTEM - LIGHT PREMIUM MEDICAL THEME
   ========================================================================== */

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

:root {
    /* Color Palette */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent-color: hsl(220, 100%, 50%); /* Premium Medical Blue */
    --accent-hover: hsl(220, 100%, 40%);
    --accent-light: hsl(220, 100%, 96%);
    
    --success-color: #10b981;
    --success-light: #ecfdf5;
    --error-color: #ef4444;
    --error-light: #fef2f2;
    --warning-color: #f59e0b;
    --warning-light: #fefbeb;
    
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.04), 0 4px 6px -4px rgb(0 0 0 / 0.04);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.03), 0 8px 10px -6px rgb(0 0 0 / 0.03);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Rubik', sans-serif;
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.25;
}

h1 { font-size: 2.75rem; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

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

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

/* Base Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 80px 0;
}

.section-heading {
    text-align: center;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-heading h2 {
    margin-bottom: 16px;
}

.section-heading p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-weight: 500;
    font-size: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 14px 0 rgb(0 102 255 / 0.2);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgb(0 102 255 / 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
}

/* Header & Navigation */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgb(255 255 255 / 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.city-select {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.city-select:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    gap: 20px;
}

.logo {
    font-family: 'Rubik', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    flex-shrink: 0;
}

.logo span {
    color: var(--text-primary);
}

.nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 1.25rem;
}

.nav-link {
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    padding: 6px 0;
    position: relative;
    white-space: nowrap;
}

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

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

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

.header-contacts {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.phone-link {
    font-weight: 600;
    font-size: 1rem;
    color: var(--accent-color);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.phone-link:hover {
    color: var(--accent-hover);
}

/* Accordions (Services & FAQ) */
.accordion {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-primary);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition-normal);
}

.accordion:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.accordion.active {
    border-color: var(--accent-color);
    box-shadow: 0 4px 14px rgb(0 102 255 / 0.08);
}

.accordion-header {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.125rem;
    user-select: none;
    transition: color var(--transition-fast);
}

.accordion-header:hover {
    color: var(--accent-color);
}

.accordion-icon {
    width: 24px;
    height: 24px;
    position: relative;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    flex-shrink: 0;
}

.accordion-icon::before, .accordion-icon::after {
    content: '';
    position: absolute;
    background-color: var(--text-secondary);
    transition: var(--transition-normal);
}

.accordion.active .accordion-icon::before,
.accordion.active .accordion-icon::after {
    background-color: var(--accent-color);
}

/* Horizontal line */
.accordion-icon::before {
    top: 11px;
    left: 4px;
    width: 16px;
    height: 2px;
}

/* Vertical line */
.accordion-icon::after {
    top: 4px;
    left: 11px;
    width: 2px;
    height: 16px;
}

.accordion.active .accordion-icon {
    transform: rotate(45deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.accordion-content {
    padding: 0 24px 24px 24px;
    border-top: 1px solid transparent;
    color: var(--text-secondary);
}

.accordion.active .accordion-content {
    border-top-color: var(--border-color);
}

/* Specialist Cards */
.specialists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.doctor-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
}

.doctor-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-hover);
}

.doctor-img-wrp {
    position: relative;
    aspect-ratio: 4/5;
    background-color: var(--bg-secondary);
    overflow: hidden;
}

.doctor-img-wrp img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.doctor-card:hover .doctor-img-wrp img {
    transform: scale(1.05);
}

.doctor-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background-color: rgb(255 255 255 / 0.9);
    backdrop-filter: blur(4px);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-color);
    box-shadow: var(--shadow-sm);
}

.doctor-info {
    padding: 24px;
}

.doctor-name {
    font-size: 1.25rem;
    margin-bottom: 6px;
}

.doctor-pos {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.doctor-exp {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--success-color);
    background-color: var(--success-light);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

/* Reviews slider & cards */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.review-card {
    background-color: var(--bg-secondary);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.review-card:hover {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.review-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.review-author {
    font-weight: 600;
    font-size: 1.125rem;
}

.review-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.review-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    color: var(--warning-color);
}

.review-text {
    color: var(--text-secondary);
    font-size: 0.975rem;
}

/* Call to Action Banner */
.cta-banner {
    background: linear-gradient(135deg, hsl(220, 100%, 50%) 0%, hsl(220, 100%, 35%) 100%);
    color: #ffffff;
    border-radius: var(--radius-xl);
    padding: 60px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgb(255 255 255 / 0.1) 0%, transparent 60%);
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.cta-banner h2 {
    color: #ffffff;
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cta-banner p {
    font-size: 1.125rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    align-items: center;
    gap: 24px;
}

.cta-phone {
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff;
}

/* Map & Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h5 {
    margin-bottom: 20px;
    font-size: 1.125rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.937rem;
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
    max-width: 650px;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-shrink: 0;
}

.footer-bottom-links a {
    color: var(--text-muted);
    font-size: 0.875rem;
    white-space: nowrap;
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--accent-color);
}

.map-container {
    width: 100%;
    max-width: 100%;
    height: 450px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    margin-bottom: 60px;
    position: relative;
}

.map-container iframe,
.map-container ymaps,
.map-container object,
.map-container embed {
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    border: 0 !important;
    display: block;
    overflow: hidden !important;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgb(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: var(--transition-normal);
}

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

.modal-container {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    padding: 40px;
    box-shadow: var(--shadow-xl);
    transform: scale(0.95);
    transition: var(--transition-normal);
    position: relative;
}

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

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

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

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

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 0.875rem;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: var(--transition-fast);
}

.form-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgb(0 102 255 / 0.15);
}

/* Mobile Burger Button */
.header__c-top-modal {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    width: 44px;
    height: 44px;
    position: relative;
    z-index: 110;
}

.header__c-top-modal span {
    display: block;
    width: 26px;
    height: 2px;
    background-color: var(--text-primary);
    margin: 5px auto;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-radius: 2px;
}

.header__c-top-modal.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.header__c-top-modal.active span:nth-child(2) {
    opacity: 0;
}

.header__c-top-modal.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer Container */
.header__modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #ffffff;
    z-index: 105;
    display: flex;
    flex-direction: column;
    padding: 90px 20px 40px 20px;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
}

.header__modal.active {
    transform: translateX(0);
}

.mobile-menu-inner {
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

.mobile-city-select {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-size: 0.9375rem;
    cursor: pointer;
    min-height: 2.75rem;
}

.mobile-nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    min-height: 2.75rem;
    padding: 10px 14px;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.mobile-nav-link:hover, .mobile-nav-link:active {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
}

.mobile-menu-contacts {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.mobile-phone-link {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 2.75rem;
}

/* Responsive adjustments */
@media (max-width: 1200px) {
    .nav-list { gap: 0.875rem; }
    .nav-link { font-size: 0.875rem; }
    .header-contacts { gap: 12px; }
    .phone-link { font-size: 0.9375rem; }
    .header-contacts .btn { padding: 8px 16px; font-size: 0.875rem; }
}

@media (max-width: 992px) {
    .header-main nav { display: none; }
    .header-contacts { display: none; }
    .header__c-top-modal { display: block !important; }
}

/* Mobile Breakpoint (< 768px) */
@media (max-width: 768px) {
    /* Layout Margins & Paddings */
    .container {
        padding: 0 1rem; /* 16px inline padding - 92% screen width usage */
    }

    section {
        padding: 2.5rem 0; /* 40px vertical spacing */
    }

    /* Fluid Typography Scale */
    h1 { font-size: 1.75rem; line-height: 1.2; }
    h2 { font-size: 1.5rem; line-height: 1.25; }
    h3 { font-size: 1.25rem; line-height: 1.3; }
    h4 { font-size: 1.125rem; }

    /* Interactive Click Targets */
    .btn {
        min-height: 2.75rem; /* 44px minimum tap height */
        padding: 12px 20px;
        width: 100%;
        justify-content: center;
    }

    /* Top Bar & Header */
    .header-top { display: none; }
    .header-main { padding: 12px 0; }

    /* Single-Column Grids */
    div[style*="grid-template-columns"],
    .specialists-grid,
    .footer-grid {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }

    /* Clinic branch cards */
    .clinic-branch-card {
        grid-template-columns: 1fr !important;
        padding: 24px !important;
    }

    .clinic-branch-card > div:first-child {
        border-right: none !important;
        padding-right: 0 !important;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 24px;
        margin-bottom: 24px;
    }

    /* CTA Banner */
    .cta-banner { padding: 28px 20px; }
    .cta-banner h2 { font-size: 1.5rem; }
    .cta-actions { flex-direction: column; align-items: stretch; gap: 12px; }

    /* Tables in pricing and clinic details */
    .service-list-card {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
        padding: 20px !important;
    }

    .service-list-card > div:last-child {
        border-left: none !important;
        padding-left: 0 !important;
        border-top: 1px solid var(--border-color);
        padding-top: 20px;
        text-align: left !important;
    }

    /* Maps responsive constraints */
    .map-container {
        height: 280px !important;
        margin-bottom: 30px !important;
        border-radius: var(--radius-lg) !important;
    }

    /* Footer bottom mobile adjustment */
    .footer-bottom {
        flex-direction: column-reverse !important;
        align-items: flex-start !important;
        gap: 16px !important;
        padding-top: 24px !important;
    }

    .footer-copyright {
        max-width: 100% !important;
        font-size: 0.8125rem !important;
        line-height: 1.5 !important;
    }

    .footer-bottom-links {
        flex-direction: row !important;
        flex-wrap: wrap !important;
        gap: 16px !important;
        width: 100% !important;
    }

    .footer-bottom-links a {
        font-size: 0.875rem !important;
        white-space: normal !important;
    }

    /* Modal adjustments */
    .modal-container {
        padding: 24px 20px;
        margin: 0 1rem;
        max-width: 100%;
    }
}