/* ===================================
   Renalus - Dialysis Center Website
   Confident Corporate Design
   =================================== */

:root {
    --charcoal: #1a1d23;
    --charcoal-light: #2d3239;
    --charcoal-dark: #121418;
    --coral: #FF6B6B;
    --coral-light: #FF8787;
    --coral-dark: #E85555;
    --neutral-50: #f8f9fa;
    --neutral-100: #f1f3f5;
    --neutral-200: #e9ecef;
    --neutral-300: #dee2e6;
    --neutral-400: #ced4da;
    --neutral-500: #adb5bd;
    --neutral-600: #868e96;
    --neutral-700: #495057;
    --neutral-800: #343a40;
    --neutral-900: #212529;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --shadow-sm: 0 1px 2px 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);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--neutral-800);
    background-color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--charcoal);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--coral);
    color: #ffffff;
    border-color: var(--coral);
}

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

.btn-secondary {
    background: transparent;
    color: var(--charcoal);
    border-color: var(--neutral-300);
}

.btn-secondary:hover {
    border-color: var(--coral);
    color: var(--coral);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* 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(--neutral-200);
    transition: var(--transition);
}

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

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--coral);
    border-radius: var(--radius-sm);
    position: relative;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: #ffffff;
    border-radius: 50%;
    opacity: 0.9;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--charcoal);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--neutral-700);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--coral);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--charcoal);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--neutral-50) 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 107, 107, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.2);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: var(--coral);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--coral);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: clamp(36px, 5vw, 56px);
    margin-bottom: 24px;
    color: var(--charcoal);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--neutral-600);
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    color: var(--coral);
}

.stat-label {
    font-size: 14px;
    color: var(--neutral-600);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--neutral-300);
}

.hero-image {
    position: relative;
}

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

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

.image-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: var(--coral);
    border-radius: var(--radius-lg);
    opacity: 0.1;
    z-index: -1;
}

.hero-card {
    position: absolute;
    bottom: -30px;
    left: -30px;
    background: #ffffff;
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    max-width: 320px;
}

.card-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--coral);
    flex-shrink: 0;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.card-text {
    font-size: 14px;
    color: var(--neutral-600);
    line-height: 1.5;
}

/* Section Styles */
.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 107, 107, 0.1);
    color: var(--coral);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: clamp(28px, 4vw, 44px);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--neutral-600);
    max-width: 600px;
    margin: 0 auto;
}

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

/* Services Section */
.services {
    padding: 100px 0;
    background: #ffffff;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 60px;
}

.service-card {
    background: var(--neutral-50);
    padding: 36px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    background: #ffffff;
    border-color: var(--neutral-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--coral);
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--neutral-600);
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--charcoal);
    color: #ffffff;
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    display: block;
}

.about-experience {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--coral);
    padding: 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    color: #ffffff;
}

.about-experience .exp-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
}

.about-experience .exp-text {
    font-size: 14px;
    opacity: 0.9;
}

.about-content .section-tag {
    background: rgba(255, 107, 107, 0.2);
}

.about-content .section-title {
    color: #ffffff;
}

.about-text {
    color: var(--neutral-400);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 32px 0;
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-icon {
    width: 24px;
    height: 24px;
    background: var(--coral);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #ffffff;
    flex-shrink: 0;
}

.feature span {
    font-size: 14px;
    color: var(--neutral-300);
}

.about-content .btn-primary {
    margin-top: 16px;
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background: var(--neutral-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-text {
    color: var(--neutral-600);
    font-size: 16px;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 52px;
    height: 52px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--coral);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--neutral-600);
    font-size: 15px;
    line-height: 1.5;
}

.contact-item a {
    color: var(--coral);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form-wrapper {
    background: #ffffff;
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 28px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-700);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--neutral-800);
    transition: var(--transition);
    background: var(--neutral-50);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--coral);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--neutral-400);
}

.form-success {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.form-success.show {
    display: block;
}

.success-icon {
    width: 64px;
    height: 64px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: var(--coral);
}

.form-success h4 {
    font-size: 20px;
    margin-bottom: 8px;
}

.form-success p {
    color: var(--neutral-600);
}

/* Footer */
.footer {
    background: var(--charcoal-dark);
    color: var(--neutral-400);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-text {
    color: #ffffff;
}

.footer-brand p {
    font-size: 15px;
    line-height: 1.6;
    max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
    color: #ffffff;
    font-size: 16px;
    margin-bottom: 16px;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--neutral-500);
    text-decoration: none;
    font-size: 15px;
    transition: var(--transition);
}

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

.footer-contact p {
    font-size: 15px;
    margin-bottom: 8px;
}

.footer-contact a {
    color: var(--coral);
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid var(--charcoal-light);
    padding-top: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 14px;
}

.footer-bottom .disclaimer {
    font-size: 13px;
    color: var(--neutral-600);
}

/* Responsive */
@media (max-width: 968px) {
    .hero-container,
    .about-container,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-card {
        position: relative;
        bottom: auto;
        left: auto;
        margin-top: 24px;
    }
    
    .about-experience {
        right: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 32px 24px;
        gap: 24px;
        border-bottom: 1px solid var(--neutral-200);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 28px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

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