/* ========================================
   CSS RESET & BASE STYLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ========================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ======================================== */

:root {
    /* Colors - Medical Professional Palette */
    --color-primary: #0066cc;
    --color-primary-dark: #004d99;
    --color-primary-light: #3385d6;
    --color-secondary: #00a8a8;
    --color-secondary-dark: #008080;
    --color-accent: #e8f4f8;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 18px;
    --font-size-sm: 16px;
    --font-size-xs: 14px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 40px;
    --font-size-4xl: 48px;

    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.6;
    --line-height-loose: 1.8;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Layout */
    --container-max-width: 1280px;
    --container-padding: 1.5rem;
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Header Height */
    --header-height: 80px;
}

/* ========================================
   BASE TYPOGRAPHY & ELEMENTS
   ======================================== */

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

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-800);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2rem, 5vw, var(--font-size-4xl));
}

h2 {
    font-size: clamp(1.75rem, 4vw, var(--font-size-3xl));
}

h3 {
    font-size: clamp(1.25rem, 3vw, var(--font-size-xl));
}

p {
    margin-bottom: var(--spacing-md);
}

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

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

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

ul,
ol {
    list-style-position: inside;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100;
    border-radius: var(--border-radius-md);
}

.skip-link:focus {
    top: var(--spacing-sm);
    left: var(--spacing-sm);
}

/* ========================================
   LAYOUT UTILITIES
   ======================================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

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

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
    position: sticky;
    top: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 50;
    height: var(--header-height);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

.logo-text {
    font-size: var(--font-size-xl);
    margin-bottom: 0;
    color: var(--color-primary);
}

.logo-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
}

/* Navigation */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-800);
    position: relative;
    transition: var(--transition-base);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-gray-800);
    transition: var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
}

.nav-link {
    color: var(--color-gray-700);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

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

.btn-nav {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-align: center;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

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

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

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-white) 100%);
    padding: calc(var(--spacing-4xl) + var(--header-height)) 0 var(--spacing-4xl);
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

/* Badges */
.badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

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

.badge-secondary {
    background: var(--color-secondary);
    color: var(--color-white);
}

.badge-icon {
    width: 20px;
    height: 20px;
}

/* Hero Text */
.hero-title {
    margin-bottom: var(--spacing-sm);
}

.hero-credentials {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xl);
}

.hero-tagline {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

/* Languages */
.languages {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-600);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-2xl);
}

.language-icon {
    width: 20px;
    height: 20px;
}

.separator {
    color: var(--color-gray-400);
}

/* Hero CTA */
.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* ========================================
   ABOUT SECTION
   ======================================== */

.section-about {
    background: var(--color-white);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-loose);
    color: var(--color-gray-700);
}

/* ========================================
   YOUR HEART HEALTH PARTNER SECTION
   ======================================== */

.section-partner {
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.partner-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
}

.partner-text {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.partner-text .section-title {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.partner-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-loose);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-lg);
}

.partner-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1100px;
    margin: 0 auto;
}

.stat-card {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.stat-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.stat-icon-large {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    margin: 0 auto var(--spacing-md);
}

.stat-label {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.stat-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

/* ========================================
   EDUCATION TIMELINE
   ======================================== */

.section-education {
    background: var(--color-gray-50);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: var(--spacing-2xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary-light);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-2xl);
}

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

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--spacing-2xl) - 6px);
    top: 0;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-white);
    box-shadow: var(--shadow-md);
}

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

.timeline-title {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.timeline-institution {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.timeline-description {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* Certificate Showcase */
.certificate-showcase {
    margin-top: var(--spacing-4xl);
    padding-top: var(--spacing-3xl);
    border-top: 1px solid var(--color-gray-200);
    text-align: center;
}

.certificate-title {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xl);
}

.certificate-container {
    position: relative;
    display: inline-block;
    max-width: 600px;
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 8px solid var(--color-white);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.certificate-container:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.certificate-image {
    display: block;
    width: 100%;
    height: auto;
}

.certificate-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 77, 153, 0.85);
    /* var(--color-primary-dark) with opacity */
    color: var(--color-white);
    padding: var(--spacing-md);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.certificate-container:hover .certificate-overlay {
    transform: translateY(0);
}

.certificate-overlay-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.certificate-caption {
    max-width: 800px;
    margin: 0 auto;
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-700);
}

.certificate-caption strong {
    color: var(--color-primary-dark);
}

/* ========================================
   SERVICES SECTION
   ======================================== */

.section-services {
    background: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.service-title {
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

.service-description {
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: 0;
}

/* Preventive Services List */
.preventive-services {
    max-width: 800px;
    margin: 0 auto;
}

.preventive-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.preventive-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    color: var(--color-gray-700);
    font-size: var(--font-size-base);
}

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

/* ========================================
   HEART FAILURE CLINIC SECTION
   ======================================== */

.section-hf-clinic {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.hf-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.endorsement-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-sm) var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.endorsement-icon {
    width: 24px;
    height: 24px;
}

.section-hf-clinic .section-title {
    color: var(--color-white);
}

/* HF Process Steps */
.hf-process {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.hf-step {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hf-step-number {
    width: 48px;
    height: 48px;
    background: var(--color-white);
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.hf-step-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.hf-step-description {
    color: rgba(255, 255, 255, 0.9);
    line-height: var(--line-height-relaxed);
    margin-bottom: 0;
}

/* HF Location */
.hf-location {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
}

.hf-location p {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.hf-location p:last-child {
    margin-bottom: 0;
}

/* ========================================
   RESEARCH SECTION
   ======================================== */

.section-research {
    background: var(--color-gray-50);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.research-card {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-base);
}

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

.research-year {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.research-title {
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.research-journal {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
}

.research-description {
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: 0;
}

/* ========================================
   FAQ SECTION
   ======================================== */

.section-faq {
    background: var(--color-white);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--color-white);
    border: none;
    text-align: left;
    font-family: var(--font-family-base);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--color-gray-50);
}

.faq-question:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

.faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    transition: transform var(--transition-base);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

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

.faq-answer p {
    padding: 0 var(--spacing-xl) var(--spacing-lg);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

/* ========================================
   CONTACT & APPOINTMENT SECTION
   ======================================== */

.section-contact {
    background: var(--color-gray-50);
}

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

/* Contact Info */
.contact-info .section-title {
    text-align: left;
}

.contact-intro {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2xl);
}

.contact-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.contact-details {
    margin-bottom: var(--spacing-2xl);
}

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

.contact-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    margin-top: 2px;
}

.contact-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    text-decoration: underline;
}

.emergency-note {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-warning);
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--color-warning);
    border-radius: var(--border-radius-md);
}

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

.emergency-note p {
    color: var(--color-gray-700);
    font-size: var(--font-size-base);
    margin: 0;
}

/* Contact Actions */
.contact-actions {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.contact-actions-title {
    font-size: var(--font-size-2xl);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.contact-actions-subtitle {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: var(--line-height-relaxed);
}

.contact-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.contact-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.contact-btn-call:hover {
    background: var(--color-primary-dark);
}

.contact-btn-whatsapp {
    background: #25D366;
    color: var(--color-white);
}

.contact-btn-whatsapp:hover {
    background: #128C7E;
}

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

.contact-btn-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.contact-btn-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    opacity: 0.9;
}

.contact-btn-number {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
}

.contact-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-lg);
}

.info-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

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

.footer-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-text {
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-400);
}

.footer-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-sm);
}

.stat-icon {
    margin: 0 auto var(--spacing-sm);
}

.stat-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary-light);
}

.stat-label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.stat-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding-top: var(--spacing-xl);
    text-align: center;
}

.footer-copyright {
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-sm);
}

.footer-disclaimer {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    max-width: 800px;
    margin: 0 auto;
}

/* ========================================
   RESPONSIVE DESIGN - TABLET
   ======================================== */

@media (max-width: 1023px) {
    :root {
        --header-height: 70px;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hf-process {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   RESPONSIVE DESIGN - MOBILE
   ======================================== */

@media (max-width: 767px) {
    :root {
        --font-size-base: 16px;
        --container-padding: 1rem;
        --spacing-4xl: 3rem;
        --header-height: 64px;
    }

    /* Header & Navigation */
    .nav-toggle {
        display: block;
    }

    .nav-list {
        position: fixed;
        top: var(--header-height);
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - var(--header-height));
        background: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-slow);
        overflow-y: auto;
    }

    .nav-list.active {
        right: 0;
    }

    .nav-link {
        width: 100%;
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--color-gray-200);
    }

    .btn-nav {
        width: 100%;
        margin-top: var(--spacing-md);
    }

    /* Hero */
    .hero {
        padding: calc(var(--spacing-3xl) + var(--header-height)) 0 var(--spacing-3xl);
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

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

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

    /* Timeline */
    .timeline {
        padding-left: var(--spacing-xl);
    }

    .timeline-marker {
        left: calc(-1 * var(--spacing-xl) - 6px);
    }

    /* Partner Stats */
    .partner-stats {
        grid-template-columns: 1fr;
    }

    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
    }

    .preventive-list {
        grid-template-columns: 1fr;
    }

    /* Research */
    .research-grid {
        grid-template-columns: 1fr;
    }

    /* Form */
    .form-row {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-stats {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {

    /* Hide non-essential elements */
    .header,
    .nav,
    .hero-cta,
    .btn,
    .appointment-form-wrapper,
    .footer-stats {
        display: none !important;
    }

    /* Optimize for printing */
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

    .section {
        page-break-inside: avoid;
        padding: 1rem 0;
    }

    h1,
    h2,
    h3 {
        page-break-after: avoid;
    }

    /* Show contact info prominently */
    .contact-details {
        border: 2px solid #000;
        padding: 1rem;
        margin: 1rem 0;
    }

    /* Ensure links are visible */
    a[href^="tel:"]::after {
        content: " (" attr(href) ")";
    }
}