/* CSS Variables */
:root {
    --primary: #1e5f8a;
    --primary-dark: #164a6d;
    --primary-light: #e8f4fa;
    --secondary: #2d8a6e;
    --accent: #d4a853;
    --text: #2c3e50;
    --text-light: #6b7c8a;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.1);
    --radius: 8px;
    --radius-lg: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', Georgia, serif;
    line-height: 1.2;
    font-weight: 700;
}

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

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

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

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

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

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

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

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    border-color: var(--white);
    color: var(--white);
}

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

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
}

.logo-text {
    font-family: 'Playfair Display', serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
}

.logo-text small {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    transition: color 0.3s;
}

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

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

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s;
}

/* Hero */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 100%);
}

.hero-content {
    max-width: 700px;
}

.hero h1 {
    font-size: 52px;
    color: var(--primary-dark);
    margin-bottom: 20px;
}

.hero p {
    font-size: 19px;
    color: var(--text-light);
    margin-bottom: 35px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 15px;
    margin-bottom: 50px;
}

.hero-stats {
    display: flex;
    gap: 50px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    font-family: 'Playfair Display', serif;
}

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

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 38px;
    color: var(--primary-dark);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 17px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Services Overview */
.services-overview {
    padding: 100px 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 35px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

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

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.service-card h3 {
    font-size: 20px;
    color: var(--text);
    margin-bottom: 12px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

.service-card p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.service-link:hover {
    gap: 10px;
}

/* Why Us */
.why-us {
    padding: 100px 0;
    background: var(--gray-50);
}

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

.why-us-content h2 {
    font-size: 38px;
    color: var(--primary-dark);
    margin-bottom: 20px;
}

.why-us-content > p {
    font-size: 17px;
    color: var(--text-light);
    margin-bottom: 35px;
    line-height: 1.7;
}

.why-us-list {
    list-style: none;
    margin-bottom: 35px;
}

.why-us-list li {
    padding: 15px 0;
    border-bottom: 1px solid var(--gray-200);
}

.why-us-list li:last-child {
    border-bottom: none;
}

.why-us-list strong {
    display: block;
    font-size: 16px;
    color: var(--text);
    margin-bottom: 5px;
}

.why-us-list span {
    font-size: 14px;
    color: var(--text-light);
}

.why-us-image {
    position: relative;
}

.image-placeholder {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    font-weight: 600;
    text-align: center;
    padding: 40px;
}

/* Cancer Types */
.cancer-types {
    padding: 100px 0;
    background: var(--white);
}

.cancer-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
}

.cancer-item {
    background: var(--gray-50);
    padding: 20px 15px;
    border-radius: var(--radius);
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

.cancer-item:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    transform: translateY(-3px);
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    text-align: center;
}

.cta-content h2 {
    font-size: 42px;
    color: var(--white);
    margin-bottom: 20px;
}

.cta-content > p {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    max-width: 600px;
    margin: 0 auto 35px;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 25px;
}

.cta-email {
    font-size: 15px;
    color: rgba(255,255,255,0.8);
}

.cta-email a {
    color: var(--white);
    font-weight: 600;
}

.cta-email a:hover {
    text-decoration: underline;
}

/* Testimonials */
.testimonials {
    padding: 100px 0;
    background: var(--gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--white);
    padding: 35px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.testimonial-content p {
    font-size: 16px;
    color: var(--text);
    line-height: 1.7;
    font-style: italic;
    margin-bottom: 25px;
}

.testimonial-author strong {
    display: block;
    font-size: 16px;
    color: var(--text);
}

.testimonial-author span {
    font-size: 14px;
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--text);
    color: var(--white);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-about .logo {
    margin-bottom: 20px;
}

.footer-about .logo-icon {
    background: var(--white);
    color: var(--primary);
}

.footer-about .logo-text {
    color: var(--white);
}

.footer-about .logo-text small {
    color: var(--gray-300);
}

.footer-about p {
    font-size: 14px;
    color: var(--gray-300);
    line-height: 1.7;
}

.footer h4 {
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    margin-bottom: 25px;
}

.footer ul {
    list-style: none;
}

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

.footer ul a {
    font-size: 14px;
    color: var(--gray-300);
    transition: color 0.3s;
}

.footer ul a:hover {
    color: var(--white);
}

.footer-contact p {
    font-size: 14px;
    color: var(--gray-300);
    margin-bottom: 15px;
    line-height: 1.6;
}

.footer-contact a {
    color: var(--white);
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--gray-300);
}

/* Responsive */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cancer-grid {
        grid-template-columns: repeat(4, 1fr);
    }

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

@media (max-width: 768px) {
    .nav-links,
    .nav .btn {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero h1 {
        font-size: 36px;
    }

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

    .hero-stats {
        flex-wrap: wrap;
        gap: 30px;
    }

    .section-header h2,
    .why-us-content h2,
    .cta-content h2 {
        font-size: 30px;
    }

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

    .why-us-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* Page Specific Styles */
.page-hero {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 100%);
    text-align: center;
}

.page-hero h1 {
    font-size: 42px;
    color: var(--primary-dark);
    margin-bottom: 15px;
}

.page-hero p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 80px 0;
}

.page-content h2 {
    font-size: 30px;
    color: var(--primary-dark);
    margin: 50px 0 20px;
}

.page-content h2:first-child {
    margin-top: 0;
}

.page-content p {
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 20px;
}

.page-content ul {
    margin: 20px 0;
    padding-left: 25px;
}

.page-content li {
    margin-bottom: 10px;
    line-height: 1.7;
}

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

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

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    font-size: 15px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.contact-info-box {
    background: var(--gray-50);
    padding: 35px;
    border-radius: var(--radius-lg);
    margin-bottom: 30px;
}

.contact-info-box h3 {
    font-size: 20px;
    color: var(--text);
    margin-bottom: 20px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

.contact-info-item {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

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

.contact-info-item .icon {
    width: 45px;
    height: 45px;
    background: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-item .icon svg {
    width: 20px;
    height: 20px;
    color: var(--white);
}

.contact-info-item .details strong {
    display: block;
    font-size: 15px;
    color: var(--text);
    margin-bottom: 3px;
}

.contact-info-item .details span,
.contact-info-item .details a {
    font-size: 14px;
    color: var(--text-light);
}

.contact-info-item .details a:hover {
    color: var(--primary);
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 30px 20px;
    }
}