/* ============================================
   Queenadi Medical - Elite Professional Website
   Design system, infrastructure, signature styling
   ============================================ */

@layer base, layout, components, utilities;

:root {
    --color-black: #0a0a0a;
    --color-black-soft: #141414;
    --color-grey: #404040;
    --color-grey-light: #6b6b6b;
    --color-grey-muted: #9ca3af;
    --color-gold: #b8860b;
    --color-gold-light: #d4af37;
    --color-white: #ffffff;
    --color-bg: #f8f8f8;
    --color-cream: #fafafa;
    --color-border: rgba(0, 0, 0, 0.06);
    --color-border-strong: rgba(0, 0, 0, 0.1);
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-soft: 0 2px 12px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-lift: 0 16px 40px -12px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 8px 24px -4px rgba(0, 0, 0, 0.08);
    --perspective: 1200px;
    --shadow-3d: 0 25px 50px -12px rgba(0, 0, 0, 0.18);
    --shadow-3d-gold: 0 20px 40px -10px rgba(184, 134, 11, 0.22);
    --radius: 8px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --section-padding: 7rem;
    /* Typography scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: clamp(2.5rem, 5.5vw, 3.5rem);
    /* Spacing scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-24: 6rem;
    /* Header height for scroll offset */
    --header-h: 72px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.7;
    color: var(--color-black);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

/* Elite: subtle grain overlay for depth (signature texture) */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9998;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.js-ready .hero-content {
    opacity: 1;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 600;
}

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

a:hover {
    color: var(--color-gold-light);
}

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

button:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.container--narrow {
    max-width: 720px;
}

/* Skip link (accessibility) */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 9999;
    padding: 0.75rem 1.25rem;
    background: var(--color-gold);
    color: var(--color-black) !important;
    font-weight: 500;
    border-radius: 0;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 1rem;
    outline: 2px solid var(--color-white);
    outline-offset: 2px;
}

/* ========== Header & Navigation ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: box-shadow var(--transition), background var(--transition);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06), 0 4px 24px rgba(0, 0, 0, 0.12);
    border-bottom-color: rgba(255, 255, 255, 0.04);
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.35rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--color-white) !important;
    letter-spacing: 0.02em;
}

.logo-pic {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(212, 175, 55, 0.18);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}

.logo-mark {
    width: 34px;
    height: 34px;
    object-fit: cover;
    display: block;
}

.logo-text {
    line-height: 1;
}

.logo:hover {
    color: var(--color-gold-light) !important;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 1px;
    background: var(--color-gold);
    transition: width var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
}

/* ========== Hero Section (3D depth & welcoming) ========== */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, var(--color-black) 0%, #0d0d0d 40%, var(--color-black-soft) 70%, var(--color-black) 100%);
    overflow: hidden;
    perspective: var(--perspective);
}

/* Signature: hero corner accents (elite detail) */
.hero-accent {
    position: absolute;
    width: 80px;
    height: 80px;
    border-color: var(--color-gold);
    border-style: solid;
    border-width: 0;
    opacity: 0.4;
    z-index: 2;
}

.hero-accent--tl {
    top: var(--space-8);
    left: var(--space-8);
    border-top-width: 2px;
    border-left-width: 2px;
}

.hero-accent--br {
    bottom: var(--space-8);
    right: var(--space-8);
    border-bottom-width: 2px;
    border-right-width: 2px;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 90% 60% at 50% -10%, rgba(184, 134, 11, 0.12) 0%, transparent 45%),
        radial-gradient(ellipse 70% 50% at 80% 100%, rgba(184, 134, 11, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 50% 40% at 20% 80%, rgba(212, 175, 55, 0.04) 0%, transparent 50%);
    pointer-events: none;
    transform: translateZ(-1px);
}

/* Profile cover illustration behind hero (subtle) */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.12;
    background-position: 70% 35%;
    background-size: cover;
    background-repeat: no-repeat;
    mix-blend-mode: luminosity;
    pointer-events: none;
    background-image: -webkit-image-set(
        url("assets/profile-cover.webp") type("image/webp") 1x,
        url("assets/profile-cover.png") type("image/png") 1x
    );
    background-image: image-set(
        url("assets/profile-cover.webp") type("image/webp") 1x,
        url("assets/profile-cover.png") type("image/png") 1x
    );
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.4;
}

.hero-content {
    position: relative;
    padding: 2rem;
    z-index: 3;
    transition: transform 0.2s ease-out;
    will-change: transform;
    animation: heroFadeIn 1s ease-out;
}

.hero-content--elite {
    width: min(1100px, calc(100% - 2.5rem));
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(1.5rem, 4vw, 3.25rem);
    align-items: center;
    text-align: left;
    padding: 2.25rem;
    border-radius: clamp(14px, 3vw, 20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: linear-gradient(180deg, rgba(10,10,10,0.66) 0%, rgba(10,10,10,0.38) 100%);
    box-shadow: var(--shadow-3d);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.hero-copy {
    max-width: 600px;
}

.hero-media {
    position: relative;
    align-self: stretch;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 360px;
}

.hero-media-pic {
    display: block;
    width: min(420px, 100%);
}

.hero-media-pic img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: clamp(14px, 2.5vw, 18px);
    box-shadow: var(--shadow-3d-gold), var(--shadow-3d);
    border: 1px solid rgba(212, 175, 55, 0.18);
}

.hero-media-glow {
    position: absolute;
    inset: -18px -24px;
    background:
        radial-gradient(closest-side at 65% 45%, rgba(212, 175, 55, 0.20), transparent 70%),
        radial-gradient(closest-side at 30% 75%, rgba(184, 134, 11, 0.12), transparent 65%);
    filter: blur(18px);
    opacity: 0.85;
    pointer-events: none;
    z-index: -1;
}

@keyframes heroFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Welcome: sliding-scale entrance (PC, Android, iOS) */
.hero-welcome {
    font-size: 0.9rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-gold-light);
    margin-bottom: 0.5rem;
    opacity: 0.95;
    overflow: hidden;
    display: inline-block;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.hero-welcome-inner {
    display: inline-block;
    animation: welcomeSlidingScale 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.25s both;
    transform-origin: center bottom;
}

@keyframes welcomeSlidingScale {
    from {
        opacity: 0;
        transform: translateY(-100%) scale(0.85);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@-webkit-keyframes welcomeSlidingScale {
    from {
        opacity: 0;
        -webkit-transform: translateY(-100%) scale(0.85);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0) scale(1);
    }
}

/* Shorter, snappier welcome animation on touch devices (Android/iOS) */
@media (max-width: 768px) {
    .hero-welcome-inner {
        animation-duration: 0.65s;
        animation-delay: 0.15s;
    }
}

@media (hover: none) and (pointer: coarse) {
    .hero-welcome-inner {
        animation-duration: 0.7s;
        animation-delay: 0.2s;
    }
}

.hero-tagline {
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(3.5rem, 10vw, 6.25rem);
    font-weight: 600;
    color: var(--color-white);
    letter-spacing: 0.02em;
    line-height: 1.08;
    margin-bottom: 0.25rem;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: rgba(255, 255, 255, 0.8);
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.hero-motto {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-style: italic;
    color: var(--color-gold-light);
    margin-bottom: 1rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.75);
    max-width: 520px;
    margin: 0 0 2rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.2s ease, border-color 0.2s ease;
    border-radius: var(--radius);
    transform-style: preserve-3d;
}

.btn--compact {
    padding: 0.9rem 1.75rem;
    font-size: 0.9rem;
    letter-spacing: 0.07em;
}

.btn-primary {
    background: var(--color-gold);
    color: var(--color-black) !important;
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.2), 0 6px 20px rgba(184, 134, 11, 0.3);
}

.btn-primary:hover {
    background: var(--color-gold-light);
    transform: translateY(-3px) translateZ(4px);
    box-shadow: 0 8px 0 rgba(0, 0, 0, 0.15), 0 12px 32px rgba(184, 134, 11, 0.35);
}

.btn-primary:active {
    transform: translateY(1px) translateZ(0);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2), 0 4px 16px rgba(184, 134, 11, 0.25);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white) !important;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    border-color: var(--color-gold);
    color: var(--color-gold-light) !important;
    transform: translateY(-2px) translateZ(2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn--light {
    background: var(--color-white);
    color: var(--color-black) !important;
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.08), var(--shadow-soft);
}

.btn--light:hover {
    background: var(--color-cream);
    color: var(--color-black) !important;
    transform: translateY(-2px) translateZ(2px);
    box-shadow: 0 6px 0 rgba(0, 0, 0, 0.06), var(--shadow-lift);
}

.hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.hero-scroll span {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: rgba(255, 255, 255, 0.5);
}

.scroll-indicator {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-gold), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* ========== Stats Bar (3D shelf) ========== */
.stats-bar {
    background: linear-gradient(180deg, var(--color-black) 0%, #0f0f0f 100%);
    color: var(--color-white);
    padding: 4rem 0;
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.3), 0 10px 40px rgba(0, 0, 0, 0.2);
    position: relative;
}

.stats-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
}

.stats-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
}

.stats-list li {
    padding: 1.5rem 2.25rem;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    transform: translateZ(0);
}

.stats-list li:hover {
    transform: translateY(-4px) translateZ(8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(212, 175, 55, 0.15);
}

.stats-value {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 600;
    color: var(--color-gold);
    line-height: 1.2;
}

.stats-label {
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.8);
}

/* ========== Section Styles ========== */
.section {
    padding: var(--section-padding) 0;
    position: relative;
}

/* Signature: section divider (elite separation) */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
    opacity: 0.6;
}

.section.about::before { display: none; }
.footprints::before {
    background: linear-gradient(90deg, transparent, var(--color-gold-light), transparent);
}

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-on-scroll .feature-card {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.reveal-on-scroll.is-visible .feature-card {
    opacity: 1;
    transform: translateY(0);
}

.section-label {
    display: block;
    font-size: 0.8rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.section-title {
    font-size: clamp(2.5rem, 5.5vw, 3.5rem);
    color: var(--color-black);
    margin-bottom: 3rem;
    letter-spacing: 0.01em;
    line-height: 1.15;
    font-weight: 600;
}

.section-title::after {
    content: '';
    display: block;
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-gold), transparent);
    margin-top: 1rem;
    border-radius: 2px;
    transition: width 0.5s ease;
}

.section.is-visible .section-title::after {
    width: 3.5rem;
}

/* About Section */
.about {
    background: var(--color-white);
    position: relative;
    overflow: hidden;
}

.about-actions {
    margin-top: 1.25rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
}

.about-lead {
    font-size: 1.25rem;
    color: var(--color-black);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.about-content p {
    margin-bottom: 1.5rem;
    color: var(--color-grey);
}

.about-content strong {
    color: var(--color-black);
}

.about .container {
    position: relative;
    z-index: 1;
}

.about::after {
    display: none;
}

/* Why Choose Us */
.why-us {
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    perspective: var(--perspective);
}

.why-us .container {
    position: relative;
    z-index: 1;
}

.why-us::after {
    display: none;
}

.feature-card {
    background: var(--color-white);
    padding: 2.25rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease, border-color 0.25s ease;
    transform-style: preserve-3d;
}

.feature-card:hover {
    transform: translateY(-8px) rotateX(2deg) rotateY(2deg);
    box-shadow: var(--shadow-lift), 0 0 0 1px rgba(184, 134, 11, 0.08);
    border-color: rgba(184, 134, 11, 0.15);
}

.feature-card-wide {
    grid-column: 1 / -1;
    max-width: 100%;
}

.feature-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    color: var(--color-black);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 12px rgba(184, 134, 11, 0.3);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-black);
}

.feature-card p {
    color: var(--color-grey);
    font-size: 0.95rem;
}

/* Implants Section */
.implants {
    background: var(--color-white);
    position: relative;
    overflow: hidden;
}

.implants-intro {
    max-width: 640px;
    margin: -1.5rem auto 2.5rem;
    color: var(--color-grey);
    font-size: 1.08rem;
    line-height: 1.65;
}

.implants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    perspective: var(--perspective);
}

.implants .container {
    position: relative;
    z-index: 1;
}

.implants::after {
    display: none;
}

/* Profile Section (visuals) */
.profile {
    background: linear-gradient(180deg, var(--color-black) 0%, #050505 100%);
    color: var(--color-white);
}

.profile::before {
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.85), transparent);
    opacity: 0.22;
}

.profile .section-label {
    color: var(--color-gold-light);
}

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

.profile .section-title::after {
    background: linear-gradient(90deg, var(--color-gold-light), transparent);
}

.profile-intro {
    max-width: 760px;
    margin: -1.5rem auto 2.75rem;
    color: rgba(255, 255, 255, 0.82);
    font-size: 1.05rem;
    text-align: center;
}

.profile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    perspective: var(--perspective);
}

.profile-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 18px 50px -24px rgba(0, 0, 0, 0.65);
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.25s ease, background 0.3s ease;
    transform-style: preserve-3d;
}

.profile-card:hover {
    transform: translateY(-8px) translateZ(8px);
    border-color: rgba(212, 175, 55, 0.22);
    background: rgba(255, 255, 255, 0.075);
    box-shadow: 0 28px 70px -34px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(212, 175, 55, 0.10);
}

.profile-card-media {
    aspect-ratio: 16 / 10;
    position: relative;
    overflow: hidden;
}

.profile-card-media picture {
    display: block;
    width: 100%;
    height: 100%;
}

.profile-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: saturate(1.05) contrast(1.02);
}

.profile-card-media--logistics img {
    object-position: 70% 96%;
}

.profile-card-media--anatomy img {
    object-position: 20% 95%;
}

.profile-card-media--portfolio img {
    object-position: 30% 18%;
}

.profile-card-body {
    padding: 1.4rem 1.4rem 1.55rem;
}

.profile-card-title {
    font-size: 1.35rem;
    margin-bottom: 0.45rem;
    color: var(--color-gold-light);
}

.profile-card-text {
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.98rem;
}

.profile-actions {
    margin-top: 2.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.implant-category {
    background: var(--color-white);
    padding: 2.25rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-gold);
    box-shadow: var(--shadow-card);
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.25s ease;
    transform-style: preserve-3d;
}

.implant-category:hover {
    transform: translateX(6px) translateY(-4px) translateZ(4px);
    box-shadow: var(--shadow-lift), 0 0 0 1px rgba(184, 134, 11, 0.08);
    border-color: rgba(184, 134, 11, 0.12);
}

.implant-category h4 {
    font-size: 1.25rem;
    color: var(--color-black);
    margin-bottom: 1rem;
}

.implant-category .dept-subtitle {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-grey-light);
    margin: 1.25rem 0 0.75rem;
}

.implant-category .dept-subtitle:first-of-type {
    margin-top: 0.25rem;
}

.implant-category ul {
    list-style: none;
}

.dept-list {
    list-style: none;
}

.implant-category li {
    padding: 0.4rem 0;
    color: var(--color-grey);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--color-border);
}

.implant-category li:last-child {
    border-bottom: none;
}

.dept-list--compact li:last-child {
    border-bottom: none;
}

@media (min-width: 1024px) {
    /* Elite readability for longer department lists */
    .dept-list {
        columns: 2;
        column-gap: 2rem;
    }

    .dept-list li {
        break-inside: avoid;
    }

    .dept-list--compact {
        columns: 1;
    }
}

/* Footprints Section */
.footprints {
    background: var(--color-black);
    color: var(--color-white);
}

.footprints .section-label {
    color: var(--color-gold);
}

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

.footprints .section-title::after {
    background: linear-gradient(90deg, var(--color-gold-light), transparent);
}

.footprints-intro {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
}

.footprints-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    perspective: var(--perspective);
}

.footprint-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2.25rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: transform 0.35s ease, box-shadow 0.35s ease, background 0.3s ease, border-color 0.25s ease;
    transform-style: preserve-3d;
}

.footprint-card:hover {
    transform: translateY(-6px) translateZ(6px) scale(1.02);
    box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(212, 175, 55, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.footprint-card h4 {
    color: var(--color-gold);
    font-size: 1.15rem;
    margin-bottom: 0;
}

.footprint-card p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

/* Contact Section */
.contact {
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.contact-intro {
    max-width: 560px;
    margin: -1.5rem auto 2.5rem;
    color: var(--color-grey);
    font-size: 1.05rem;
    text-align: center;
}

.contact .container {
    position: relative;
    z-index: 1;
}

.contact::after {
    display: none;
}

.contact-office-map {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    margin-bottom: 2rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-3d);
    min-height: 340px;
}

.contact-card-office {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 0;
    border-radius: 0;
}

.contact-card-office h4 {
    margin-bottom: 1rem;
}

.contact-card-link {
    margin-top: 1rem;
}

.contact-map-wrap {
    position: relative;
    min-height: 340px;
    background: var(--color-grey-muted);
}

.contact-map {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.contact-card-details {
    margin-top: 0;
    padding: 2.5rem;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.contact-detail-item {
    display: flex;
    align-items: baseline;
    gap: 1.25rem;
    padding: 1.125rem 0;
    border-bottom: 1px solid var(--color-border);
}

.contact-detail-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.contact-detail-item:first-of-type {
    padding-top: 0;
}

.contact-detail-label {
    flex-shrink: 0;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-grey-light);
    min-width: 3.5rem;
}

.contact-detail-value {
    font-size: 1.05rem;
    color: var(--color-black);
    word-break: break-all;
}

.contact-detail-value:hover {
    color: var(--color-gold);
}

.contact-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.25s ease;
    transform-style: preserve-3d;
}

.contact-card:hover {
    transform: translateY(-6px) translateZ(6px);
    box-shadow: var(--shadow-lift), 0 0 0 1px rgba(184, 134, 11, 0.08);
    border-color: rgba(184, 134, 11, 0.1);
}

.contact-card h4 {
    font-size: 1.25rem;
    color: var(--color-black);
    margin-bottom: 1.25rem;
    letter-spacing: 0.02em;
}

.contact-card address,
.contact-card p {
    color: var(--color-grey);
    font-style: normal;
    margin-bottom: 0.5rem;
}

.contact-card a {
    color: var(--color-gold);
}

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

/* Booking form */
.booking-form-card {
    margin-top: 2rem;
}

.booking-form-intro {
    color: var(--color-grey);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.booking-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-row label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-black);
}

.form-row .required {
    color: var(--color-gold);
}

.booking-form input,
.booking-form select,
.booking-form textarea {
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-white);
    color: var(--color-black);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.booking-form input::placeholder,
.booking-form textarea::placeholder {
    color: var(--color-grey-muted);
}

.booking-form input:focus,
.booking-form select:focus,
.booking-form textarea:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(184, 134, 11, 0.15);
}

.booking-form input[aria-invalid="true"],
.booking-form textarea[aria-invalid="true"] {
    border-color: #b91c1c;
}

.booking-form input[aria-invalid="true"]:focus,
.booking-form textarea[aria-invalid="true"]:focus {
    box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.2);
}

.booking-form select {
    cursor: pointer;
    appearance: auto;
}

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

.form-error {
    font-size: 0.85rem;
    color: #b91c1c;
    min-height: 1.25rem;
}

.form-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.form-status {
    font-size: 0.95rem;
    margin: 0;
}

.form-status.success {
    color: #15803d;
}

.form-status.error {
    color: #b91c1c;
}

.booking-form.loading .booking-form input,
.booking-form.loading .booking-form select,
.booking-form.loading .booking-form textarea,
.booking-form.loading .btn-primary {
    pointer-events: none;
    opacity: 0.8;
}

#booking-submit:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

/* Global error toast */
.global-toast {
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    right: 1.5rem;
    max-width: 420px;
    margin: 0 auto;
    padding: 1rem 1.25rem;
    background: var(--color-black);
    color: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-3d);
    z-index: 10000;
    font-size: 0.95rem;
    transform: translateY(120%);
    transition: transform 0.3s ease;
}

.global-toast.visible {
    transform: translateY(0);
}

.global-toast:not([hidden]) {
    display: block;
}

.global-toast[hidden] {
    display: none !important;
}

/* CTA Strip (3D raised, signature gold bar) */
.cta-strip {
    background: linear-gradient(145deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    color: var(--color-black);
    padding: 5rem 0;
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.15), 0 8px 32px rgba(184, 134, 11, 0.2);
    position: relative;
}

.cta-strip::before,
.cta-strip::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.08), transparent);
}

.cta-strip::before { top: 0; }
.cta-strip::after { bottom: 0; }

.cta-strip-inner {
    text-align: center;
}

.cta-strip-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: 0.5rem;
}

.cta-strip-text {
    margin-bottom: 1.5rem;
    opacity: 0.9;
    font-size: 1.05rem;
}

/* Footer */
.footer {
    background: linear-gradient(180deg, var(--color-black) 0%, #050505 100%);
    color: var(--color-white);
    padding: 4.5rem 0 2rem;
    border-top: 2px solid rgba(212, 175, 55, 0.25);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 3.5rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 280px;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.footer-reg {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0.5rem;
}

.footer-motto {
    font-family: var(--font-display);
    font-style: italic;
    color: var(--color-gold-light);
    font-size: 0.95rem;
}

.footer-heading {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.85);
}

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

.footer-address p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.footer-address a {
    color: var(--color-gold-light);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-copy {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .nav {
        padding: 1.05rem 1.5rem;
    }

    .logo {
        gap: 0.55rem;
        font-size: 1.35rem;
    }

    .logo-pic {
        width: 30px;
        height: 30px;
        border-radius: 10px;
    }

    .logo-mark {
        width: 30px;
        height: 30px;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-black);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        transition: right var(--transition);
    }

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

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .nav-toggle span {
        transition: transform var(--transition);
    }

    .section {
        padding: 4rem 0;
    }

    .section-title {
        font-size: clamp(2rem, 8vw, 2.75rem);
    }

    .section-title::after {
        width: 2.5rem;
    }

    .container {
        padding: 0 1.5rem;
    }

    .feature-card-wide {
        grid-column: 1;
    }

    .contact-office-map {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .contact-card-office {
        min-height: 220px;
    }

    .contact-map-wrap {
        min-height: 300px;
    }

    .contact-detail-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.4rem;
    }

    .contact-detail-label {
        min-width: auto;
    }

    .stats-list {
        flex-direction: column;
        gap: 2rem;
    }

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

    .hero-content--elite {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 1.6rem;
        width: min(720px, calc(100% - 2rem));
    }

    .hero-copy {
        max-width: none;
        margin: 0 auto;
    }

    .hero-desc {
        margin: 0 auto 1.75rem;
    }

    .hero-media {
        min-height: auto;
        order: -1;
    }

    .hero-media-pic {
        width: min(360px, 100%);
    }

    .profile-intro {
        margin: -1.25rem auto 2.25rem;
        text-align: left;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-brand {
        max-width: none;
    }

    .hero-accent {
        width: 48px;
        height: 48px;
    }

    .hero-accent--tl {
        top: var(--space-4);
        left: var(--space-4);
    }

    .hero-accent--br {
        bottom: var(--space-4);
        right: var(--space-4);
    }

    /* Avoid background illustration clashes on small screens */
    .about::after,
    .why-us::after,
    .implants::after,
    .contact::after {
        display: none;
    }

    .hero::after {
        opacity: 0.08;
        background-position: 65% 25%;
    }
}

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

    .hero-content {
        animation: none;
    }

    .hero-welcome-inner {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .section-title::after {
        width: 3.5rem;
    }

    .reveal-on-scroll,
    .reveal-on-scroll .feature-card {
        opacity: 1;
        transform: none;
    }

    .feature-card:hover,
    .implant-category:hover,
    .footprint-card:hover,
    .contact-card:hover,
    .stats-list li:hover {
        transform: translateY(-4px);
    }

    .btn-primary:hover,
    .btn-secondary:hover,
    .btn--light:hover {
        transform: translateY(-2px);
    }

    body::after {
        display: none;
    }
}

/* Utility: high-contrast focus for accessibility */
:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
}