/* ============================================
   INVICTUS LONGEVITY — Stylesheet
   Color Palette: Midnight Blue + Mint
   ============================================ */

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

:root {
    --midnight-950: #050d1a;
    --midnight-900: #0a1628;
    --midnight-800: #0f1f36;
    --midnight-700: #1a2d4a;
    --midnight-600: #1e3a5f;
    --midnight-500: #2a4a6b;
    --midnight-400: #3d6080;
    --midnight-100: #d0dce8;
    --midnight-50: #eaf2f8;
    
    --mint-500: #1fb58a;
    --mint-400: #34d4a8;
    --mint-300: #6ee7c4;
    --mint-200: #a8f0d8;
    --mint-100: #e0f8f0;
    
    --neutral-900: #0f172a;
    --neutral-800: #1e293b;
    --neutral-700: #334155;
    --neutral-600: #475569;
    --neutral-500: #64748b;
    --neutral-400: #94a3b8;
    --neutral-300: #cbd5e1;
    --neutral-200: #e2e8f0;
    --neutral-100: #f1f5f9;
    --neutral-50: #f8fafc;
    --white: #ffffff;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    
    --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.06);
    --shadow-md: 0 4px 16px rgba(10, 22, 40, 0.08);
    --shadow-lg: 0 8px 32px rgba(10, 22, 40, 0.12);
    --shadow-xl: 0 16px 48px rgba(10, 22, 40, 0.16);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--neutral-800);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   HEADER / NAV
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(52, 212, 168, 0.1);
    transition: background var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}

.logo-text {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--white);
    text-transform: uppercase;
}

.logo-dot {
    color: var(--mint-400);
}

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

.nav-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--neutral-300);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.06);
}

.nav-cta {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--midnight-900);
    background: var(--mint-400);
    padding: 9px 20px;
    border-radius: var(--radius-sm);
    margin-left: 8px;
    transition: background var(--transition), transform var(--transition);
}

.nav-cta:hover {
    background: var(--mint-300);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    position: relative;
    z-index: 1001;
}

.hamburger {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: block;
    width: 22px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 22px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.mobile-menu-btn[aria-expanded="true"] .hamburger {
    background: transparent;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn[aria-expanded="true"] .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--midnight-900);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
}

.hero-scrim {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(5, 13, 26, 0.95) 0%,
        rgba(10, 22, 40, 0.88) 40%,
        rgba(30, 58, 95, 0.70) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 120px 0 80px;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mint-400);
    background: rgba(52, 212, 168, 0.1);
    border: 1px solid rgba(52, 212, 168, 0.25);
    padding: 8px 16px;
    border-radius: 50px;
    margin-bottom: 32px;
}

.hero-headline {
    font-family: var(--font-serif);
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.12;
    color: var(--white);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.text-mint {
    color: var(--mint-400);
}

.hero-sub {
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    line-height: 1.7;
    color: var(--neutral-300);
    max-width: 580px;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 56px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--neutral-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--neutral-400);
    animation: scrollBounce 2s ease-in-out infinite;
    z-index: 1;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--mint-400);
    color: var(--midnight-900);
}

.btn-primary:hover {
    background: var(--mint-300);
    box-shadow: 0 8px 24px rgba(52, 212, 168, 0.3);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.06);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.12);
    box-shadow: none;
}

.btn-mint {
    background: var(--mint-400);
    color: var(--midnight-900);
}

.btn-mint:hover {
    background: var(--mint-300);
    box-shadow: 0 8px 24px rgba(52, 212, 168, 0.3);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-light:hover {
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

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

/* ============================================
   SECTION COMMON
   ============================================ */
.section-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--mint-500);
    margin-bottom: 16px;
}

.section-label-light {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--mint-300);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.18;
    color: var(--neutral-900);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-title-light {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.18;
    color: var(--white);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--neutral-600);
    max-width: 560px;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
    padding: 100px 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 56px;
}

.service-card {
    background: var(--neutral-50);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
    border-color: var(--mint-400);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(52, 212, 168, 0.08);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.service-card p {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--neutral-600);
    margin-bottom: 20px;
}

.service-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--mint-500);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--transition), color var(--transition);
}

.service-link:hover {
    gap: 10px;
    color: var(--mint-400);
}

/* ============================================
   ABOUT
   ============================================ */
.about {
    padding: 100px 0;
    background: var(--neutral-50);
}

.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-image-wrap {
    position: relative;
}

.about-img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.about-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 160px;
    height: 160px;
    background: var(--mint-400);
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0.15;
}

.about-body {
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--neutral-600);
    margin-bottom: 20px;
}

.about-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 36px;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--neutral-800);
}

/* ============================================
   APPROACH
   ============================================ */
.approach {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.approach-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.approach-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.approach-scrim {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(5, 13, 26, 0.93) 0%, rgba(15, 31, 54, 0.88) 100%);
}

.approach-content {
    position: relative;
    z-index: 1;
}

.approach-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 56px;
}

.step {
    padding: 36px 32px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
    transition: background var(--transition), border-color var(--transition);
}

.step:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(52, 212, 168, 0.3);
}

.step-number {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--mint-400);
    text-transform: uppercase;
    margin-bottom: 16px;
}

.step h3 {
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.step p {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--neutral-400);
}

/* ============================================
   CTA
   ============================================ */
.cta {
    padding: 88px 0;
    background: var(--midnight-900);
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
}

.cta-content h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 2.5vw, 2.125rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.cta-content p {
    font-size: 1.0625rem;
    color: var(--neutral-400);
    line-height: 1.7;
    max-width: 480px;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
    padding: 100px 0;
    background: var(--white);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-desc {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--neutral-600);
    margin-bottom: 40px;
}

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

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

.contact-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(52, 212, 168, 0.08);
    border-radius: var(--radius-sm);
}

.contact-item strong {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--neutral-900);
    margin-bottom: 4px;
}

.contact-item span,
.contact-item a {
    font-size: 0.9375rem;
    color: var(--neutral-600);
    line-height: 1.6;
}

.contact-item a:hover {
    color: var(--mint-500);
}

.contact-form-wrap {
    background: var(--neutral-50);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--neutral-700);
    letter-spacing: 0.04em;
}

.form-group input,
.form-group select,
.form-group textarea {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--neutral-900);
    background: var(--white);
    border: 1.5px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--mint-400);
    box-shadow: 0 0 0 3px rgba(52, 212, 168, 0.12);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-success {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--mint-500);
    padding: 16px;
    background: rgba(52, 212, 168, 0.06);
    border: 1px solid rgba(52, 212, 168, 0.2);
    border-radius: var(--radius-sm);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--midnight-950);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-tagline {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--neutral-400);
    margin-top: 16px;
    max-width: 280px;
}

.footer-links strong,
.footer-contact strong {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--neutral-400);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--mint-400);
}

.footer-contact address {
    font-style: normal;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--neutral-400);
}

.footer-contact a {
    color: var(--neutral-400);
    transition: color var(--transition);
}

.footer-contact a:hover {
    color: var(--mint-400);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 24px 0;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--neutral-600);
}

.footer-disclaimer {
    font-size: 0.75rem !important;
    color: var(--neutral-700) !important;
    max-width: 480px;
    text-align: right;
}

/* ============================================
   MOBILE NAV OVERLAY
   ============================================ */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(5, 13, 26, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.mobile-nav-overlay.active {
    display: flex;
}

.mobile-nav-overlay .nav-list {
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-overlay .nav-link {
    font-size: 1.25rem;
    padding: 14px 24px;
    color: var(--neutral-200);
}

.mobile-nav-overlay .nav-cta {
    margin-left: 0;
    margin-top: 16px;
    font-size: 1rem;
    padding: 14px 32px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-content {
        padding: 100px 0 80px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-img {
        height: 360px;
    }
    
    .about-values {
        grid-template-columns: 1fr;
    }
    
    .approach-steps {
        grid-template-columns: 1fr;
    }
    
    .cta-inner {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-content p {
        max-width: 100%;
    }
    
    .cta-actions {
        flex-direction: row;
        width: 100%;
    }
    
    .cta-actions .btn {
        flex: 1;
        justify-content: center;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form-wrap {
        padding: 28px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-disclaimer {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .service-card {
        padding: 28px 24px;
    }
}

/* ============================================
   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;
    }
}