/* ============================================
   GAMCA Medical Centers - CSS Stylesheet
   Author: Custom Design
   Version: 1.0
   ============================================ */

/* ============================================
   CSS VARIABLES & THEME
   ============================================ */
:root {
    /* Primary Colors - Medical Green Theme */
    --primary-color: #0A5C36;
    --primary-dark: #074228;
    --primary-light: #0D7A4A;
    --primary-lighter: #E8F5F0;
    
    /* Secondary Colors */
    --secondary-color: #C4A962;
    --accent-color: #D4AF37;
    --danger-color: #DC3545;
    --success-color: #28A745;
    --warning-color: #FFC107;
    --info-color: #17A2B8;
    
    /* Neutral Colors */
    --text-primary: #1A1A1A;
    --text-secondary: #4A4A4A;
    --text-muted: #6C757D;
    --background-light: #FFFFFF;
    --background-gray: #F8F9FA;
    --background-dark: #2C3E50;
    --border-color: #DEE2E6;
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Work Sans', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: var(--background-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

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

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

ul, ol {
    list-style: none;
}

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

/* ============================================
   PRELOADER
   ============================================ */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
}

.medical-cross {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    animation: pulse 1.5s ease-in-out infinite;
}

.cross-vertical,
.cross-horizontal {
    position: absolute;
    background: white;
    border-radius: 4px;
}

.cross-vertical {
    width: 20px;
    height: 80px;
    left: 30px;
    top: 0;
}

.cross-horizontal {
    width: 80px;
    height: 20px;
    left: 0;
    top: 30px;
}

.loading-text {
    color: white;
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 2px;
    animation: fadeInOut 1.5s ease-in-out infinite;
}

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

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

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.centered {
    text-align: center;
}

.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

/* ============================================
   NAVIGATION
   ============================================ */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
    transition: var(--transition-base);
}

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

.navbar {
    padding: var(--spacing-sm) 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.logo-icon svg {
    display: block;
}

.logo-text h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 0;
    font-weight: 700;
}

.logo-text p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-base);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.btn-appointment {
    background: var(--primary-color);
    color: white !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
}

.btn-appointment::after {
    display: none;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-md);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0A5C36 0%, #074228 100%);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="60" height="60" xmlns="http://www.w3.org/2000/svg"><rect width="1" height="1" x="29.5" y="29.5" fill="white" opacity="0.1"/></svg>');
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 92, 54, 0.9) 0%, rgba(7, 66, 40, 0.85) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
    color: white;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: fadeInUp 1s ease 0.2s backwards;
}

.badge-icon {
    width: 20px;
    height: 20px;
    background: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    animation: fadeInUp 1s ease 0.3s backwards;
}

.highlight-text {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease 0.5s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-base);
    cursor: pointer;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid white;
    backdrop-filter: blur(10px);
}

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

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.6s backwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    font-family: var(--font-display);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: fadeInUp 1s ease 0.8s backwards;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 25px;
    position: relative;
    margin: 0 auto var(--spacing-xs);
}

.wheel {
    width: 4px;
    height: 10px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s ease infinite;
}

.scroll-indicator p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 2px;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(15px); }
}

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

/* ============================================
   ALERT BANNER
   ============================================ */
.alert-banner {
    background: linear-gradient(135deg, #FFF3CD 0%, #FFE69C 100%);
    border-bottom: 2px solid var(--warning-color);
    padding: var(--spacing-md) 0;
    animation: slideDown 0.5s ease;
}

.alert-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
}

.alert-icon {
    color: var(--warning-color);
    flex-shrink: 0;
}

.alert-content span {
    color: #856404;
    font-size: 0.95rem;
}

.alert-link {
    color: var(--primary-color);
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: var(--transition-fast);
}

.alert-link:hover {
    border-bottom-color: var(--primary-color);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    margin-bottom: var(--spacing-2xl);
}

.section-label {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
}

.section-header.centered .section-description {
    margin: 0 auto;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section {
    background: var(--background-gray);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-content {
    display: grid;
    gap: var(--spacing-lg);
}

.about-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.about-icon {
    margin-bottom: var(--spacing-md);
}

.about-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.about-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.image-placeholder {
    background: var(--primary-lighter);
    aspect-ratio: 4/3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.image-placeholder p {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.1rem;
}

.about-stats-overlay {
    position: absolute;
    bottom: 30px;
    left: 30px;
    right: 30px;
    display: flex;
    gap: var(--spacing-md);
}

.stat-box {
    flex: 1;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.stat-box h4 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-box p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.service-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    position: relative;
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.service-card.featured {
    background: linear-gradient(135deg, var(--primary-lighter) 0%, white 100%);
    border-color: var(--primary-color);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.service-icon {
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.4rem;
}

.service-list {
    margin-bottom: var(--spacing-md);
}

.service-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.service-duration {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.9rem;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.service-note {
    background: var(--primary-lighter);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    border-left: 4px solid var(--primary-color);
}

.service-note svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.service-note p {
    margin: 0;
    color: var(--text-secondary);
}

/* ============================================
   CENTERS SECTION
   ============================================ */
.centers-section {
    background: var(--background-gray);
}

.centers-search {
    margin-bottom: var(--spacing-xl);
}

.search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: var(--transition-base);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(10, 92, 54, 0.1);
}

.country-filters {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    background: white;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-base);
    cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.centers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.center-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.center-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.center-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-sm);
}

.center-header h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin: 0;
}

.center-status {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

.center-status.active {
    background: #D4EDDA;
    color: #155724;
}

.center-info {
    display: grid;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.info-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.info-item svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.center-btn {
    display: block;
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    text-align: center;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition-base);
}

.center-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ============================================
   PROCESS SECTION
   ============================================ */
.process-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--primary-light));
}

.timeline-item {
    position: relative;
    padding-left: 120px;
    margin-bottom: var(--spacing-2xl);
    animation: fadeInLeft 0.6s ease;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-display);
    box-shadow: var(--shadow-lg);
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.timeline-item:hover .timeline-content {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.timeline-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.timeline-details {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.detail-tag {
    background: var(--primary-lighter);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
}

.timeline-icon {
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.1;
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-section {
    background: var(--background-gray);
}

.faq-grid {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

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

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-icon {
    flex-shrink: 0;
    transition: var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================
   FOOTER
   ============================================ */
.main-footer {
    background: var(--background-dark);
    color: white;
}

.footer-top {
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
}

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

.footer-logo h3 {
    color: white;
    margin: 0;
    font-size: 1.5rem;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition-base);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-column h4 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

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

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg) 0;
}

.footer-bottom-content {
    text-align: center;
}

.footer-bottom-content p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.footer-certification {
    font-size: 0.85rem;
    font-style: italic;
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: var(--z-sticky);
    cursor: pointer;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        padding-left: 100px;
    }
    
    .timeline-number {
        width: 60px;
        height: 60px;
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-lg);
        transition: var(--transition-base);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-stats {
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .centers-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats-overlay {
        position: static;
        margin-top: var(--spacing-md);
    }
    
    .timeline-icon {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .country-filters {
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        font-size: 0.85rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}