/* ============================================
   Serenity Spa - Landing Page Styles
   Design System: Soft UI Evolution
   ============================================ */

:root {
    /* Colors from Design System */
    --color-primary: #2563EB;
    --color-secondary: #3B82F6;
    --color-cta: #F97316;
    --color-bg: #F8FAFC;
    --color-bg-alt: #F1F5F9;
    --color-text: #1E293B;
    --color-text-secondary: #64748B;
    --color-text-muted: #94A3B8;
    --color-white: #FFFFFF;
    --color-accent-soft: #E0E7FF;
    --color-accent-warm: #FED7AA;
    
    /* Shadows - Soft UI Evolution */
    --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);
    --shadow-soft: 0 2px 8px rgba(30, 41, 59, 0.08);
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --section-padding: 100px;
    --container-max: 1200px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(30, 41, 59, 0.05);
    transition: var(--transition-base);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-text);
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: 8px;
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-text);
    background: rgba(37, 99, 235, 0.05);
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
}

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

.btn-primary:hover {
    background: #EA580C;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-text-secondary);
}

.btn-outline:hover {
    background: rgba(37, 99, 235, 0.05);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-icon {
    width: 18px;
    height: 18px;
}

/* Hero Section */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-accent-soft) 100%);
}

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

.hero-tag {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 600;
    line-height: 1.15;
    color: var(--color-text);
    margin-bottom: 20px;
}

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

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-features {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.hero-feature svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 480px;
}

.hero-image-placeholder {
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-accent-soft) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.hero-image-placeholder svg {
    width: 80px;
    height: 80px;
    color: var(--color-text-muted);
    opacity: 0.4;
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

/* Services Section */
.services {
    padding: var(--section-padding) 0;
    background: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    position: relative;
    padding: 40px 32px;
    background: var(--color-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-base);
}

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

.service-card.featured {
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-accent-soft) 100%);
    border: 2px solid var(--color-primary);
}

.service-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 12px;
    margin-bottom: 20px;
}

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

.service-title {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.service-desc {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.service-price {
    font-weight: 600;
    color: var(--color-primary);
}

/* Experience Section */
.experience {
    padding: var(--section-padding) 0;
    background: var(--color-bg-alt);
}

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

.experience-content .section-tag {
    margin-bottom: 16px;
}

.experience-content .section-title {
    margin-bottom: 20px;
}

.experience-text {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.experience-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.experience-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    color: var(--color-text);
}

.experience-list svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.experience-visual {
    display: flex;
    justify-content: center;
}

.experience-image-wrapper {
    width: 100%;
    max-width: 440px;
}

.experience-image-placeholder {
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-accent-warm) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.experience-image-placeholder svg {
    width: 80px;
    height: 80px;
    color: var(--color-text-muted);
    opacity: 0.4;
}

/* Testimonials Section */
.testimonials {
    padding: var(--section-padding) 0;
    background: var(--color-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    padding: 32px;
    background: var(--color-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-base);
}

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

.testimonial-card.featured {
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-accent-soft) 100%);
    border: 2px solid var(--color-primary);
}

.testimonial-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
}

.testimonial-stars svg {
    width: 18px;
    height: 18px;
    color: #F59E0B;
}

.testimonial-quote {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    font-style: italic;
}

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

.author-avatar {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 50%;
}

.author-name {
    display: block;
    font-weight: 600;
    color: var(--color-text);
}

.author-title {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

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

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
}

.cta-feature svg {
    width: 20px;
    height: 20px;
    color: var(--color-white);
}

.btn-cta {
    background: var(--color-white);
    color: var(--color-primary);
    margin-bottom: 20px;
}

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

.cta-note {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
}

.cta-note a {
    color: var(--color-white);
    font-weight: 600;
    text-decoration: underline;
}

/* Footer */
.footer {
    padding: 80px 0 32px;
    background: var(--color-text);
    color: var(--color-white);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.footer-logo svg {
    width: 28px;
    height: 28px;
}

.footer-tagline {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--color-secondary);
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    max-width: 280px;
}

.footer-heading {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--color-white);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    transition: var(--transition-fast);
}

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

.footer-address {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.footer-hours p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    transition: var(--transition-fast);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .hero-container,
    .experience-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-visual,
    .experience-visual {
        order: -1;
    }
    
    .services-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 12px;
    }
    
    .services-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-features {
        flex-direction: column;
        gap: 16px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 375px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .service-card,
    .testimonial-card {
        padding: 28px 24px;
    }
}

/* Focus States for Accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* 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;
    }
}