/* ================================================================
   MEDENTICA QUATTROCONE — SMART CLINIC
   Landing Page CSS — Phase 2: Premium UI Design
   ================================================================ */


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 1 · DESIGN TOKENS
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
:root {
    /* Palette */
    --c-bg:          #0B0F19;
    --c-bg-alt:      #0D1120;
    --c-bg-surface:  #111827;
    --c-bg-glass:    rgba(255, 255, 255, 0.045);
    --c-bg-glass-hover: rgba(255, 255, 255, 0.08);

    --c-red:         #E10600;
    --c-red-dark:    #C00500;
    --c-red-dim:     rgba(225, 6, 0, 0.14);
    --c-red-glow:    rgba(225, 6, 0, 0.28);

    --c-cyan:        #5DE1FF;
    --c-cyan-dim:    rgba(93, 225, 255, 0.10);
    --c-cyan-glow:   rgba(93, 225, 255, 0.20);

    --c-white:       #FFFFFF;
    --c-muted:       #9AA4B2;
    --c-faint:       #3D4A5C;
    --c-border:      rgba(255, 255, 255, 0.09);
    --c-border-hi:   rgba(255, 255, 255, 0.18);

    /* Typography */
    --f-sans:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --f-fa:          'Vazirmatn', 'Tahoma', sans-serif;

    /* Type scale — fluid via clamp() */
    --t-hero:    clamp(2.75rem, 6vw, 4.25rem);
    --t-h2:      clamp(2rem,    4vw, 2.75rem);
    --t-h3:      clamp(1.25rem, 2vw, 1.5rem);
    --t-lead:    clamp(1.05rem, 1.5vw, 1.2rem);
    --t-base:    1rem;
    --t-sm:      0.875rem;
    --t-xs:      0.75rem;

    /* Spacing */
    --sp-section: 8rem;
    --sp-section-sm: 5rem;
    --sp-card:    2rem;
    --sp-gap:     1.5rem;

    /* Border radius */
    --r-sm:   8px;
    --r-md:   14px;
    --r-lg:   20px;
    --r-xl:   28px;
    --r-full: 9999px;

    /* Shadows */
    --sh-card:     0 4px 16px rgba(0,0,0,0.4), 0 1px 0 rgba(255,255,255,0.04) inset;
    --sh-card-hover: 0 16px 48px rgba(0,0,0,0.5), 0 1px 0 rgba(255,255,255,0.07) inset;
    --sh-red:      0 8px 32px rgba(225,6,0,0.35);
    --sh-cyan:     0 8px 32px rgba(93,225,255,0.2);
    --sh-glow-red: 0 0 80px rgba(225,6,0,0.14);
    --sh-glow-cyan:0 0 80px rgba(93,225,255,0.10);

    /* Motion */
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
    --ease-base:   cubic-bezier(0.4, 0, 0.2, 1);
    --dur-fast:    200ms;
    --dur-base:    350ms;
    --dur-slow:    600ms;
    --dur-reveal:  700ms;

    /* Layout */
    --header-h: 72px;
    --max-w:    1200px;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 2 · RESET & BASE
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--c-bg);
    color: var(--c-white);
    font-family: var(--f-sans);
    font-size: var(--t-base);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, svg  { display: block; max-width: 100%; }
ul        { list-style: none; }
a         { color: inherit; text-decoration: none; }
h1,h2,h3  { line-height: 1.15; }

.skip-link {
    position: absolute; top: -100%; left: 1rem;
    background: var(--c-red); color: #fff;
    padding: 0.5rem 1rem; border-radius: var(--r-sm);
    z-index: 9999; transition: top var(--dur-fast);
}
.skip-link:focus { top: 1rem; }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 3 · ENTRANCE ANIMATIONS (data-animate)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
[data-animate] {
    opacity: 0;
    transform: translateY(28px);
    transition:
        opacity   var(--dur-reveal) var(--ease-out),
        transform var(--dur-reveal) var(--ease-out);
    transition-delay: var(--anim-delay, 0ms);
}
[data-animate="fade-in"]  { transform: none; }
[data-animate="scale-in"] { transform: scale(0.95); }
[data-animate="slide-right"] { transform: translateX(-28px); }

[data-animate].is-visible {
    opacity: 1;
    transform: none;
}

@keyframes pulse-ring {
    0%   { box-shadow: 0 0 0 0   rgba(225,6,0,0.5); }
    100% { box-shadow: 0 0 0 20px rgba(225,6,0,0); }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-10px); }
}
@keyframes scroll-line {
    0%   { transform: scaleY(0); transform-origin: top; }
    40%  { transform: scaleY(1); transform-origin: top; }
    60%  { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}
@keyframes orbit {
    0%   { transform: rotate(0deg)   translateX(60px) rotate(0deg); }
    100% { transform: rotate(360deg) translateX(60px) rotate(-360deg); }
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 4 · LAYOUT UTILITIES
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.container {
    width: 100%;
    max-width: var(--max-w);
    margin-inline: auto;
    padding-inline: 2rem;
}

.section-header  { margin-bottom: 4rem; }
.section-header--center { text-align: center; }
.section-header--center .section-subtitle { margin-inline: auto; }

.fa-text {
    font-family: var(--f-fa);
    direction: rtl;
    unicode-bidi: embed;
}

/* Eyebrow label */
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-size: var(--t-xs);
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--c-red);
    margin-bottom: 1.25rem;
}
.section-eyebrow::before {
    content: '';
    display: block;
    width: 20px;
    height: 1px;
    background: var(--c-red);
    opacity: 0.7;
}

/* Section headings */
.section-title {
    font-size: var(--t-h2);
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 1.25rem;
    color: var(--c-white);
}

.section-subtitle {
    font-size: var(--t-lead);
    color: var(--c-muted);
    max-width: 54ch;
    line-height: 1.7;
}

/* Card grids */
.cards-grid { display: grid; gap: var(--sp-gap); }
.cards-grid--3 { grid-template-columns: repeat(3, 1fr); }
.cards-grid--4 { grid-template-columns: repeat(4, 1fr); }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 5 · GLASS CARD COMPONENT
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.glass-card {
    position: relative;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    background: linear-gradient(
        140deg,
        rgba(255,255,255,0.07) 0%,
        rgba(255,255,255,0.03) 100%
    );
    border-radius: var(--r-lg);
    border: 1px solid var(--c-border);
    box-shadow: var(--sh-card);
    overflow: hidden;
    transition:
        transform   var(--dur-base) var(--ease-spring),
        border-color var(--dur-base) var(--ease-base),
        box-shadow  var(--dur-base) var(--ease-base);
}

/* Top-edge highlight */
.glass-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255,255,255,0.15) 40%,
        rgba(255,255,255,0.15) 60%,
        transparent 100%
    );
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: var(--c-border-hi);
    box-shadow: var(--sh-card-hover);
}

/* Accent glow variant */
.glass-card--accent { border-color: rgba(225,6,0,0.25); }
.glass-card--accent:hover { box-shadow: var(--sh-card-hover), 0 0 40px var(--c-red-glow); }

.glass-card--cyan { border-color: rgba(93,225,255,0.18); }
.glass-card--cyan:hover { box-shadow: var(--sh-card-hover), var(--sh-glow-cyan); }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 6 · BUTTONS
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 0.875rem 2rem;
    border-radius: var(--r-full);
    font-family: var(--f-fa);
    font-size: var(--t-sm);
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    border: none;
    white-space: nowrap;
    transition:
        background var(--dur-fast) var(--ease-base),
        transform   var(--dur-base) var(--ease-spring),
        box-shadow  var(--dur-base) var(--ease-base);
}

.btn-primary {
    background: var(--c-red);
    color: #fff;
}
.btn-primary:hover {
    background: var(--c-red-dark);
    transform: translateY(-2px);
    box-shadow: var(--sh-red);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
    background: transparent;
    color: var(--c-white);
    border: 1px solid var(--c-border-hi);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.07);
    border-color: var(--c-border-hi);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--c-muted);
    padding-inline: 0;
}
.btn-ghost:hover { color: var(--c-white); }

.btn-sm  { padding: 0.5rem 1.375rem; font-size: var(--t-xs); }
.btn-lg  { padding: 1.125rem 2.75rem; font-size: 1rem; }

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px; height: 18px;
    font-size: 0.625em;
    border-radius: 50%;
    background: rgba(255,255,255,0.18);
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 7 · HEADER
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    height: var(--header-h);
    z-index: 200;
    transition:
        background     var(--dur-base) var(--ease-base),
        border-color   var(--dur-base) var(--ease-base),
        backdrop-filter var(--dur-base) var(--ease-base);
    border-bottom: 1px solid transparent;
}

.site-header.scrolled {
    background: rgba(11, 15, 25, 0.88);
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    border-color: var(--c-border);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

/* Logo */
.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.logo-mark {
    display: grid;
    place-items: center;
    width: 34px; height: 34px;
    background: var(--c-red);
    border-radius: var(--r-sm);
    font-size: 11px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.08em;
    box-shadow: 0 2px 8px var(--c-red-glow);
}

.logo-text {
    font-size: var(--t-sm);
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--c-white);
}

/* Nav */
.header-nav { flex: 1; display: flex; justify-content: center; }

.nav-list {
    display: flex;
    align-items: center;
    gap: 2.75rem;
}

.nav-link {
    font-size: var(--t-sm);
    font-weight: 500;
    color: var(--c-muted);
    transition: color var(--dur-fast);
    position: relative;
    padding-bottom: 2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0; right: 0;
    height: 1.5px;
    background: linear-gradient(90deg, var(--c-red), var(--c-cyan));
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform var(--dur-base) var(--ease-spring);
}

.nav-link:hover      { color: var(--c-white); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link.active     { color: var(--c-white); }

.header-cta { margin-left: auto; flex-shrink: 0; }

/* Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    margin-left: auto;
}
.nav-toggle span {
    display: block;
    width: 22px; height: 1.5px;
    background: var(--c-white);
    border-radius: 2px;
    transition: all var(--dur-base) var(--ease-base);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg) translate(4px, 5px); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg) translate(4px, -5px); }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 8 · HERO
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: var(--header-h);
    padding-bottom: 6rem;
    overflow: hidden;
    isolation: isolate;
}

/* Atmospheric background layers */
.section-hero::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 90% 70% at 65% 40%, rgba(225,6,0,0.07) 0%, transparent 65%),
        radial-gradient(ellipse 60% 50% at 10% 80%, rgba(93,225,255,0.05) 0%, transparent 60%);
    pointer-events: none; z-index: -1;
}

/* Subtle grid texture */
.section-hero::after {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 80%);
    pointer-events: none; z-index: -1;
}

/* Two-column layout */
.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    min-height: calc(100svh - var(--header-h) - 6rem);
}

/* Left: content */
.hero-content { display: flex; flex-direction: column; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    width: fit-content;
    font-size: var(--t-xs);
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--c-red);
    background: var(--c-red-dim);
    border: 1px solid rgba(225,6,0,0.3);
    border-radius: var(--r-full);
    padding: 0.375rem 1.125rem;
    margin-bottom: 2rem;
}
.hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--c-red);
    box-shadow: 0 0 8px var(--c-red);
    animation: pulse-ring 2s ease-out infinite;
}

.hero-title {
    font-size: var(--t-hero);
    font-weight: 800;
    letter-spacing: -0.035em;
    line-height: 1.06;
    margin-bottom: 1.75rem;
}

/* Gradient brand name */
.hero-brand {
    display: block;
    background: linear-gradient(
        120deg,
        var(--c-white)   0%,
        var(--c-white)  30%,
        #FF4040          60%,
        var(--c-cyan)   100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-fa {
    display: block;
    font-family: var(--f-fa);
    font-size: 0.48em;
    font-weight: 400;
    -webkit-text-fill-color: var(--c-muted);
    background: none;
    letter-spacing: 0.01em;
    margin-top: 0.75rem;
}

.hero-subtitle {
    font-size: var(--t-lead);
    color: var(--c-muted);
    line-height: 1.8;
    margin-bottom: 2.75rem;
    max-width: 42ch;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3.5rem;
    flex-wrap: wrap;
}

/* Stat chips */
.hero-meta {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.stat-value {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--c-white);
    letter-spacing: -0.02em;
    line-height: 1;
}

.stat-label {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--c-faint);
}

.stat-divider {
    width: 1px;
    height: 32px;
    background: var(--c-border);
}

/* Right: visual */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3.2;
    border-radius: var(--r-xl);
    overflow: hidden;
    z-index: 1;
    background: linear-gradient(
        140deg,
        rgba(255,255,255,0.055) 0%,
        rgba(255,255,255,0.02)  100%
    );
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow:
        var(--sh-card),
        0 0 0 1px rgba(255,255,255,0.04) inset;
}

/* Animated gradient border on the frame */
.visual-frame::before {
    content: '';
    position: absolute; inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: conic-gradient(
        from 0deg,
        transparent 0%,
        var(--c-red) 20%,
        var(--c-cyan) 50%,
        transparent 70%
    );
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.3;
}

.visual-inner {
    position: absolute; inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.visual-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    border-radius: inherit;
}

.visual-orb {
    width: 100px; height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(225,6,0,0.4) 0%, transparent 70%);
    filter: blur(24px);
    animation: float 4s ease-in-out infinite;
}

.visual-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.375rem;
    text-align: center;
}

.visual-label-main {
    font-size: var(--t-xs);
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.45);
}

.visual-label-sub {
    font-size: 10px;
    color: var(--c-faint);
    letter-spacing: 0.08em;
}

/* Decorative satellite elements */
.visual-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid;
    pointer-events: none;
}

.visual-ring-1 {
    width: 60%; height: 60%;
    border-color: rgba(225,6,0,0.12);
    animation: float 6s ease-in-out infinite;
}

.visual-ring-2 {
    width: 85%; height: 85%;
    border-color: rgba(93,225,255,0.07);
    animation: float 8s ease-in-out infinite reverse;
}

/* Ambient glow behind */
.visual-glow {
    position: absolute;
    width: 80%; height: 80%;
    border-radius: 50%;
    background: radial-gradient(circle, var(--c-red-glow) 0%, transparent 70%);
    filter: blur(60px);
    z-index: 0;
    animation: float 5s ease-in-out infinite;
}

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

.scroll-line {
    display: block;
    width: 1px; height: 48px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
    animation: scroll-line 2s ease-in-out infinite;
}

.scroll-text {
    font-size: 9px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--c-faint);
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 9 · CONCEPT SECTION
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-concept {
    padding-block: var(--sp-section);
    background: var(--c-bg-alt);
    position: relative;
    overflow: hidden;
    text-align: center;
}

/* Decorative large text behind */
.section-concept::before {
    content: '01';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(8rem, 22vw, 18rem);
    font-weight: 900;
    letter-spacing: -0.05em;
    color: rgba(255,255,255,0.022);
    pointer-events: none;
    user-select: none;
    line-height: 1;
}

.concept-title-wrap {
    max-width: 18ch;
    margin-inline: auto;
    margin-bottom: 2rem;
}

.concept-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-block: 2.5rem;
    opacity: 0.3;
}

.concept-divider::before,
.concept-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-muted));
}

.concept-divider::after {
    background: linear-gradient(90deg, var(--c-muted), transparent);
}

.concept-divider-dot {
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--c-red);
}

.concept-body {
    max-width: 60ch;
    margin-inline: auto;
    margin-bottom: 4.5rem;
}

.concept-lead {
    font-size: var(--t-lead);
    color: var(--c-white);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.concept-text {
    font-size: var(--t-base);
    color: var(--c-muted);
    line-height: 1.85;
}

/* Three-pillar strip */
.concept-pillars {
    display: inline-flex;
    align-items: stretch;
    border: 1px solid var(--c-border);
    border-radius: var(--r-lg);
    overflow: hidden;
    background: var(--c-bg-glass);
    backdrop-filter: blur(20px);
}

.pillar-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.75rem 3rem;
    text-align: center;
}

.pillar-number {
    font-size: var(--t-xs);
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--c-red);
}

.pillar-label {
    font-size: var(--t-base);
    font-weight: 600;
    color: var(--c-white);
    letter-spacing: 0.01em;
}

.pillar-divider {
    width: 1px;
    background: var(--c-border);
    flex-shrink: 0;
    align-self: stretch;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 10 · SYSTEM CARDS
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-system-cards {
    padding-block: var(--sp-section);
    background: var(--c-bg);
}

.cards-grid--3 { gap: 1.75rem; }

.system-card {
    padding: 2.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Featured card accent variant */
.system-card.featured {
    background: linear-gradient(
        140deg,
        rgba(225,6,0,0.08)   0%,
        rgba(255,255,255,0.04) 100%
    );
    border-color: rgba(225,6,0,0.28);
}

.system-card.featured::after {
    content: 'Core System';
    position: absolute;
    top: 1.25rem; right: 1.25rem;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--c-red);
    background: var(--c-red-dim);
    border: 1px solid rgba(225,6,0,0.25);
    border-radius: var(--r-full);
    padding: 0.25rem 0.625rem;
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px; height: 52px;
    background: linear-gradient(140deg, var(--c-red-dim), rgba(225,6,0,0.05));
    border: 1px solid rgba(225,6,0,0.2);
    border-radius: var(--r-md);
}

.card-title {
    font-size: var(--t-h3);
    font-weight: 700;
    color: var(--c-white);
    letter-spacing: -0.01em;
}

.card-text {
    font-size: var(--t-sm);
    color: var(--c-muted);
    line-height: 1.75;
    flex: 1;
}

/* Hover: accent line top */
.system-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--c-red), var(--c-cyan));
    border-radius: var(--r-lg) var(--r-lg) 0 0;
    opacity: 0;
    transition: opacity var(--dur-base) var(--ease-base);
}
.system-card:not(.featured)::after { background: linear-gradient(90deg, var(--c-red), var(--c-cyan)); }
.system-card:hover::after { opacity: 1; }


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 11 · TREATMENT TRACK
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-treatment-track {
    padding-block: var(--sp-section);
    background: var(--c-bg-alt);
}

/* Horizontal timeline container */
.track-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0;
    margin-top: 4.5rem;
}

/* The connecting rail — gradient line */
.track-rail {
    position: absolute;
    top: 20px;
    left: calc(100% / 12);
    right: calc(100% / 12);
    height: 1px;
    background: linear-gradient(
        90deg,
        var(--c-red)  0%,
        var(--c-cyan) 100%
    );
    opacity: 0.4;
    z-index: 0;
}

.track-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 0 0.75rem;
    position: relative;
    z-index: 1;
}

/* Node circle */
.step-node {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--c-bg-alt);
    border: 1.5px solid var(--c-red);
    display: grid;
    place-items: center;
    position: relative;
    flex-shrink: 0;
    transition: border-color var(--dur-base), box-shadow var(--dur-base);
}

.step-node::before {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    border: 1px solid rgba(225,6,0,0.2);
    transition: opacity var(--dur-base);
}

.track-step:hover .step-node {
    border-color: var(--c-cyan);
    box-shadow: 0 0 16px var(--c-red-glow);
}

.step-number {
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: var(--c-red);
    line-height: 1;
}

/* Step card */
.step-content {
    padding: 1.25rem;
    text-align: center;
    width: 100%;
    transition: transform var(--dur-base) var(--ease-spring),
                box-shadow  var(--dur-base) var(--ease-base);
}

.track-step:hover .step-content {
    transform: translateY(-3px);
    box-shadow: var(--sh-card-hover);
}

.step-title {
    font-size: var(--t-sm);
    font-weight: 700;
    color: var(--c-white);
    margin-bottom: 0.5rem;
}

.step-desc {
    font-size: var(--t-xs);
    color: var(--c-muted);
    line-height: 1.65;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 12 · WHY MEDENTICA
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-why {
    padding-block: var(--sp-section);
    background: var(--c-bg);
}

.cards-grid--4 { gap: 1.5rem; }

.why-card {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    /* Left accent border — appears on hover */
}

.why-card::after {
    content: '';
    position: absolute;
    top: 20%; bottom: 20%;
    left: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--c-red), var(--c-cyan));
    border-radius: 0 2px 2px 0;
    opacity: 0;
    transition: opacity var(--dur-base) var(--ease-base),
                top      var(--dur-base) var(--ease-base),
                bottom   var(--dur-base) var(--ease-base);
}

.why-card:hover::after {
    opacity: 1;
    top: 12%; bottom: 12%;
}

.why-icon {
    display: grid;
    place-items: center;
    width: 52px; height: 52px;
    background: var(--c-bg-glass);
    border: 1px solid var(--c-border);
    border-radius: var(--r-md);
    font-size: 1.375rem;
    flex-shrink: 0;
    transition: background var(--dur-base), border-color var(--dur-base);
}

.why-card:hover .why-icon {
    background: var(--c-red-dim);
    border-color: rgba(225,6,0,0.25);
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 13 · EDUCATIONAL SECTION
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-educational {
    padding-block: var(--sp-section);
    background: var(--c-bg-alt);
    position: relative;
    overflow: hidden;
}

.section-educational::before {
    content: '';
    position: absolute;
    right: -10%;
    top: -20%;
    width: 50%;
    aspect-ratio: 1;
    border-radius: 50%;
    background: radial-gradient(circle, var(--c-cyan-dim) 0%, transparent 70%);
    pointer-events: none;
}

.section-educational .section-title {
    max-width: 24ch;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.edu-body {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 6rem;
    margin-top: 3rem;
    align-items: start;
}

.edu-lead {
    font-size: var(--t-lead);
    color: var(--c-muted);
    line-height: 1.8;
    position: sticky;
    top: calc(var(--header-h) + 2rem);
}

.edu-factors { display: flex; flex-direction: column; }

.edu-factor {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding-block: 2rem;
    border-bottom: 1px solid var(--c-border);
    transition: background var(--dur-fast);
}
.edu-factor:first-child { border-top: 1px solid var(--c-border); }

.edu-factor:hover .factor-indicator { background: var(--c-cyan); box-shadow: 0 0 12px var(--c-cyan-glow); }

.factor-indicator {
    flex-shrink: 0;
    margin-top: 0.5rem;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--c-red);
    box-shadow: 0 0 8px var(--c-red-glow);
    transition: background var(--dur-base), box-shadow var(--dur-base);
}

.factor-title {
    font-size: var(--t-base);
    font-weight: 700;
    color: var(--c-white);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.factor-text {
    font-size: var(--t-sm);
    color: var(--c-muted);
    line-height: 1.75;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 14 · TEAM SECTION
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-team {
    padding-block: var(--sp-section);
    background: var(--c-bg);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.team-block {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Top accent bar per column */
.team-block::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--c-red), var(--c-cyan));
    border-radius: var(--r-lg) var(--r-lg) 0 0;
    opacity: 0;
    transition: opacity var(--dur-base);
}
.team-block:hover::before { opacity: 1; }

.team-visual {
    aspect-ratio: 16 / 10;
    background: var(--c-bg-surface);
    overflow: hidden;
    border-radius: var(--r-md) var(--r-md) 0 0;
}

.team-placeholder {
    width: 100%; height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed rgba(255,255,255,0.1);
    border-radius: var(--r-md) var(--r-md) 0 0;
    font-size: var(--t-xs);
    color: var(--c-faint);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    background: radial-gradient(ellipse at center, rgba(255,255,255,0.025) 0%, transparent 70%);
    transition: border-color var(--dur-base);
}

.team-block:hover .team-placeholder {
    border-color: rgba(255,255,255,0.18);
}

.team-content {
    padding: 1.75rem;
    flex: 1;
}

.team-role {
    font-size: var(--t-h3);
    font-weight: 700;
    color: var(--c-white);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.team-desc {
    font-size: var(--t-sm);
    color: var(--c-muted);
    line-height: 1.7;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 15 · VIDEO SECTION
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-video {
    padding-block: var(--sp-section);
    background: var(--c-bg-alt);
}

.video-section-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4rem;
    align-items: center;
}

.video-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.video-wrapper {
    position: relative;
    border-radius: var(--r-xl);
    overflow: hidden;
    border: 1px solid var(--c-border);
    box-shadow: var(--sh-card), 0 0 80px rgba(0,0,0,0.3);
    transition: box-shadow var(--dur-base);
    flex-shrink: 0;
}

.video-player {
    display: block;
    height: 62vh;
    max-height: 640px;
    min-height: 320px;
    width: auto;
    aspect-ratio: 9 / 16;
    object-fit: cover;
    background: #0d1120;
}

.video-wrapper:hover {
    box-shadow: var(--sh-card-hover), var(--sh-glow-red);
    border-color: rgba(225,6,0,0.2);
}

.video-placeholder {
    aspect-ratio: 16 / 7;
    background: linear-gradient(
        140deg,
        #111827 0%,
        #0d1120 50%,
        #0f1520 100%
    );
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* Subtle gradient vignette */
.video-placeholder::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 60% 80% at 50% 50%, rgba(225,6,0,0.06) 0%, transparent 70%);
    pointer-events: none;
}

/* Scan-line texture */
.video-placeholder::after {
    content: '';
    position: absolute; inset: 0;
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(255,255,255,0.012) 2px,
        rgba(255,255,255,0.012) 4px
    );
    pointer-events: none;
}

.video-play-wrap {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.75rem;
}

.video-play-btn {
    width: 84px; height: 84px;
    border-radius: 50%;
    background: var(--c-red);
    display: grid;
    place-items: center;
    box-shadow: 0 0 0 0 var(--c-red-glow);
    transition:
        transform var(--dur-base) var(--ease-spring),
        box-shadow var(--dur-base) var(--ease-base);
}

.video-wrapper:hover .video-play-btn {
    transform: scale(1.1);
    box-shadow: 0 0 40px var(--c-red-glow), var(--sh-red);
}

.play-icon {
    font-size: 1.75rem;
    color: #fff;
    padding-left: 5px;
    line-height: 1;
}

.video-label {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.video-label p {
    font-size: var(--t-base);
    font-weight: 600;
    color: var(--c-muted);
}

.video-label span {
    font-size: var(--t-xs);
    color: var(--c-faint);
    letter-spacing: 0.06em;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 16 · FINAL CTA
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-final-cta {
    padding-block: var(--sp-section);
    background: var(--c-bg);
    position: relative;
    isolation: isolate;
}

.section-final-cta::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 80% 100% at 50% 60%, rgba(225,6,0,0.09) 0%, transparent 60%),
        radial-gradient(ellipse 40% 40% at 80% 20%, rgba(93,225,255,0.04) 0%, transparent 60%);
    z-index: -1;
}

.cta-inner {
    max-width: 720px;
    margin-inline: auto;
    padding: 4.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.75rem;
    /* Use gradient border trick */
    position: relative;
}

.cta-inner::before {
    content: '';
    position: absolute; inset: 0;
    border-radius: var(--r-xl);
    padding: 1px;
    background: linear-gradient(140deg, rgba(225,6,0,0.4), rgba(93,225,255,0.2), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.cta-badge {
    font-size: var(--t-xs);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--c-red);
    opacity: 0.85;
}

.cta-title {
    font-size: clamp(1.625rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.2;
    color: var(--c-white);
}

.cta-subtitle {
    font-family: var(--f-fa);
    font-size: var(--t-lead);
    color: var(--c-muted);
    direction: rtl;
}

.cta-note {
    font-size: var(--t-xs);
    color: var(--c-faint);
    letter-spacing: 0.04em;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 17 · FOOTER
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.site-footer {
    background: var(--c-bg-surface);
    border-top: 1px solid var(--c-border);
}

.footer-inner {
    padding-block: 5rem;
    display: grid;
    grid-template-columns: 1.1fr 2fr;
    gap: 5rem;
    align-items: start;
}

.footer-brand { display: flex; flex-direction: column; gap: 1.25rem; }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-tagline {
    font-size: var(--t-sm);
    color: var(--c-muted);
    line-height: 1.7;
    max-width: 28ch;
}

.footer-divider {
    width: 32px;
    height: 1.5px;
    background: linear-gradient(90deg, var(--c-red), var(--c-cyan));
    border-radius: 2px;
}

.footer-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.footer-heading {
    font-size: var(--t-xs);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--c-faint);
    margin-bottom: 1.5rem;
}

.footer-address {
    font-style: normal;
    font-size: var(--t-sm);
    color: var(--c-muted);
    line-height: 1.75;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.footer-phone {
    color: var(--c-white);
    font-weight: 500;
    transition: color var(--dur-fast);
}
.footer-phone:hover { color: var(--c-red); }

.footer-nav { display: flex; flex-direction: column; gap: 1rem; }
.footer-nav a {
    font-size: var(--t-sm);
    color: var(--c-muted);
    transition: color var(--dur-fast), transform var(--dur-fast);
    display: inline-block;
}
.footer-nav a:hover { color: var(--c-white); transform: translateX(4px); }

.footer-social { display: flex; flex-direction: column; gap: 1rem; }
.social-link {
    font-size: var(--t-sm);
    color: var(--c-muted);
    transition: color var(--dur-fast);
}
.social-link:hover { color: var(--c-white); }

.footer-bottom {
    border-top: 1px solid var(--c-border);
    padding-block: 1.75rem;
}
.footer-bottom .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer-copy, .footer-system-note {
    font-size: var(--t-xs);
    color: var(--c-faint);
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   SMART LAB SECTION
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.section-smart-lab {
    padding-block: var(--sp-section);
    background: var(--c-bg-alt);
    overflow: hidden;
}

/* ── Hero row ── */
.lab-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4.5rem;
    align-items: center;
    margin-bottom: 4rem;
}

.lab-hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.lab-title {
    font-family: var(--f-fa);
    font-size: clamp(2.75rem, 5.5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    color: var(--c-white);
    margin: 0;
    letter-spacing: -0.02em;
}

.lab-title-mark {
    color: var(--c-red);
}

.lab-question {
    font-family: var(--f-fa);
    font-size: var(--t-lead);
    color: var(--c-white);
    line-height: 1.85;
    font-weight: 600;
    border-right: 3px solid var(--c-red);
    padding-right: 1.125rem;
    margin: 0;
}

.lab-body {
    font-family: var(--f-fa);
    font-size: var(--t-base);
    color: var(--c-muted);
    line-height: 2.1;
    margin: 0;
    max-width: 58ch;
}

.lab-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
}

.lab-tag {
    font-family: var(--f-fa);
    font-size: var(--t-xs);
    color: var(--c-cyan);
    background: var(--c-cyan-dim);
    border: 1px solid rgba(93,225,255,0.2);
    border-radius: 100px;
    padding: 0.35rem 0.875rem;
    letter-spacing: 0.01em;
}

/* ── Hero image ── */
.lab-hero-img {
    position: relative;
    border-radius: var(--r-xl);
    overflow: hidden;
    border: 1px solid var(--c-border);
    box-shadow: var(--sh-card), 0 0 80px rgba(0,0,0,0.45);
}

.lab-hero-img::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        145deg,
        rgba(225,6,0,0.07) 0%,
        transparent 55%
    );
    z-index: 1;
    pointer-events: none;
}

.lab-hero-img img {
    display: block;
    width: 100%;
    height: 520px;
    object-fit: cover;
    transition: transform 0.65s ease;
}

.lab-hero-img:hover img {
    transform: scale(1.03);
}

.lab-hero-badge {
    position: absolute;
    bottom: 1.25rem;
    left: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(11,15,25,0.82);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--c-border-hi);
    border-radius: 100px;
    padding: 0.45rem 1rem;
    font-size: var(--t-xs);
    font-weight: 700;
    color: var(--c-white);
    letter-spacing: 0.08em;
    z-index: 2;
}

.lab-hero-badge-icon {
    color: var(--c-cyan);
    font-size: 0.9rem;
}

/* ── Gallery grid (lab1–lab8) ── */
/* In RTL, grid line 1 is on the physical right, so col 1/3 = rightmost 2 cols */
.lab-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: 210px 210px 210px;
    gap: 0.75rem;
}

.lab-gallery-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: var(--c-bg-surface);
}

.lab-gallery-item img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.55s ease;
}

.lab-gallery-item:hover img {
    transform: scale(1.07);
}

.lab-gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.35) 100%);
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
}

.lab-gallery-item:hover .lab-gallery-overlay {
    opacity: 1;
}

/* Grid positions — in RTL, line 1 is the right edge */
.lab-gi-1 { grid-column: 1 / 3; grid-row: 1 / 3; } /* big 2×2, visual right in RTL  */
.lab-gi-2 { grid-column: 3;     grid-row: 1;     }
.lab-gi-3 { grid-column: 4;     grid-row: 1;     }
.lab-gi-4 { grid-column: 3;     grid-row: 2;     }
.lab-gi-5 { grid-column: 4;     grid-row: 2;     }
.lab-gi-6 { grid-column: 1;     grid-row: 3;     }
.lab-gi-7 { grid-column: 2;     grid-row: 3;     }
.lab-gi-8 { grid-column: 3 / 5; grid-row: 3;     } /* wide 2×1, visual left in RTL  */


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 18 · RESPONSIVE — TABLET (≤ 1024px)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 1024px) {
    :root { --sp-section: 6rem; }

    .hero-inner    { gap: 3.5rem; }

    .cards-grid--4 { grid-template-columns: repeat(2, 1fr); }

    .track-timeline {
        grid-template-columns: repeat(3, 1fr);
        row-gap: 2.5rem;
    }
    .track-rail { display: none; }

    .edu-body { grid-template-columns: 1fr; gap: 3rem; }
    .edu-lead  { position: static; }

    .footer-inner { grid-template-columns: 1fr; gap: 3rem; }
    .footer-info  { grid-template-columns: repeat(3, 1fr); }

    .concept-pillars { flex-wrap: wrap; justify-content: center; }

    .video-section-inner { grid-template-columns: 1fr; gap: 2.5rem; }
    .video-player { height: auto; width: 100%; max-height: none; aspect-ratio: 9 / 16; }

    .lab-hero { grid-template-columns: 1fr; gap: 2.5rem; }
    .lab-hero-img img { height: 380px; }
    .lab-gallery { grid-template-rows: 160px 160px 160px; }
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 19 · RESPONSIVE — MOBILE (≤ 768px)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 768px) {
    :root { --sp-section: 4.5rem; }

    /* Header */
    .nav-toggle { display: flex; }
    .header-cta { display: none; }

    .header-nav {
        position: fixed;
        top: var(--header-h); left: 0; right: 0;
        background: rgba(11, 15, 25, 0.97);
        backdrop-filter: blur(28px);
        -webkit-backdrop-filter: blur(28px);
        padding: 2rem;
        border-bottom: 1px solid var(--c-border);
        transform: translateY(-110%);
        opacity: 0;
        pointer-events: none;
        transition:
            transform var(--dur-base) var(--ease-out),
            opacity   var(--dur-base) var(--ease-out);
    }

    .header-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .nav-link { font-size: var(--t-base); }

    /* Hero */
    .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
    .hero-visual { order: -1; }
    .visual-frame { aspect-ratio: 3 / 2; }

    .hero-meta { flex-wrap: wrap; gap: 1.25rem; }

    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { justify-content: center; }

    /* Cards */
    .cards-grid--3 { grid-template-columns: 1fr; }
    .cards-grid--4 { grid-template-columns: 1fr; }

    /* Track */
    .track-timeline { grid-template-columns: 1fr; gap: 1.5rem; }
    .track-step { flex-direction: row; align-items: flex-start; gap: 1rem; }
    .step-node  { flex-shrink: 0; }
    .step-content { text-align: left; }

    /* Concept */
    .concept-pillars { flex-direction: column; align-items: stretch; width: 100%; border-radius: var(--r-md); }
    .pillar-item     { padding: 1.5rem; }
    .pillar-divider  { width: auto; height: 1px; }

    /* Team */
    .team-grid { grid-template-columns: 1fr; }

    /* Footer */
    .footer-info { grid-template-columns: 1fr; gap: 2.5rem; }
    .footer-bottom .container { flex-direction: column; gap: 0.5rem; text-align: center; }

    /* CTA */
    .cta-inner { padding: 2.5rem 1.75rem; }

    /* Section */
    .section-header { margin-bottom: 2.5rem; }

    /* Smart Lab */
    .lab-gallery {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(5, 180px);
    }
    .lab-gi-1 { grid-column: 1 / 3; grid-row: 1 / 3; }
    .lab-gi-2 { grid-column: 1; grid-row: 3; }
    .lab-gi-3 { grid-column: 2; grid-row: 3; }
    .lab-gi-4 { grid-column: 1; grid-row: 4; }
    .lab-gi-5 { grid-column: 2; grid-row: 4; }
    .lab-gi-6 { grid-column: 1; grid-row: 5; }
    .lab-gi-7 { grid-column: 2; grid-row: 5; }
    .lab-gi-8 { display: none; }
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 20 · RESPONSIVE — SMALL MOBILE (≤ 480px)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 480px) {
    :root { --sp-section: 3.5rem; }

    .container { padding-inline: 1.25rem; }

    .hero-badge { font-size: 9px; }

    .video-placeholder { aspect-ratio: 4 / 3; }

    .edu-body { gap: 2rem; }
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 22 · HERO BANNER
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.hero-banner {
    width: 100%;
    height: 540px;
    padding-top: 100px;
    overflow: hidden;
    background: #0a0a12;
}

.hero-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

@media (max-width: 600px) {
    .hero-banner { height: 280px; padding-top: 70px; }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   § 21 · BLAZOR SHELL OVERRIDE
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.landing-root { display: block; }

/* Suppress Blazor default body/content classes that may bleed in */
.landing-root .page,
.landing-root .main,
.landing-root .sidebar,
.landing-root .top-row,
.landing-root .content { all: unset; display: block; }