/* ========================================
   BIOTRONICS — Dark Mode Sleek Styles
   ======================================== */

/* ===== CSS VARIABLES ===== */
:root {
    --primary: #3B82F6;
    --primary-glow: rgba(59, 130, 246, 0.5);
    --primary-dark: #2563EB;
    --primary-light: rgba(59, 130, 246, 0.12);
    --accent: #06D6A0;
    --accent-glow: rgba(6, 214, 160, 0.4);

    --bg-primary: #05070E;
    --bg-secondary: #0B0F1A;
    --bg-tertiary: #111827;
    --bg-card: #0F1629;
    --bg-card-hover: #141C33;

    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(59, 130, 246, 0.3);

    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;

    --radius: 14px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.08);
    --shadow-card: 0 4px 30px rgba(0,0,0,0.3);
    --shadow-card-hover: 0 8px 50px rgba(59, 130, 246, 0.12);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

body {
    font-family: var(--font);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

ul { list-style: none; }
img { max-width: 100%; display: block; }

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

/* ===== TYPOGRAPHY ===== */
h1 { font-size: clamp(2.5rem, 5.5vw, 4.2rem); font-weight: 800; line-height: 1.08; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 700; line-height: 1.12; letter-spacing: -0.02em; }
h3 { font-size: 1.2rem; font-weight: 600; line-height: 1.3; }
h4 { font-size: 1.05rem; font-weight: 600; line-height: 1.3; }

.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== SELECTION & SCROLLBAR ===== */
::selection { background: var(--primary); color: #fff; }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 50px;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--primary-glow), 0 8px 25px rgba(0,0,0,0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(59,130,246,0.1);
}

.btn-white {
    background: #fff;
    color: var(--bg-primary);
    border-color: #fff;
    font-weight: 700;
}
.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255,255,255,0.2), 0 8px 25px rgba(0,0,0,0.3);
}

.btn-outline-white {
    background: transparent;
    color: rgba(255,255,255,0.8);
    border-color: rgba(255,255,255,0.2);
}
.btn-outline-white:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.5);
    color: #fff;
    transform: translateY(-2px);
}

.btn-lg { padding: 16px 36px; font-size: 0.95rem; }
.btn-full { width: 100%; }

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 18px 0;
    transition: var(--transition);
    background: rgba(5, 7, 14, 0.6);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(5, 7, 14, 0.92);
    border-bottom-color: var(--border);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    letter-spacing: -0.02em;
}

.logo-icon { font-size: 1.3rem; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    padding: 4px 0;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 1px;
    transition: var(--transition);
}

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

.nav-cta { padding: 10px 24px; font-size: 0.82rem; }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 10;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
    transform-origin: center;
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
    background: var(--bg-primary);
}

/* Animated grid */
.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59,130,246,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.04) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 70%);
    animation: grid-drift 20s linear infinite;
}

@keyframes grid-drift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(80px, 80px); }
}

/* Ambient orbs */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, transparent 60%);
    border-radius: 50%;
    animation: orb-float 8s ease-in-out infinite;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6,214,160,0.06) 0%, transparent 60%);
    border-radius: 50%;
    animation: orb-float 10s ease-in-out infinite reverse;
}

@keyframes orb-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -20px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* Particle canvas */
.particles-canvas {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 28px;
    border: 1px solid rgba(6,214,160,0.15);
    animation: badge-glow 3s ease-in-out infinite alternate;
}

@keyframes badge-glow {
    0% { box-shadow: 0 0 10px rgba(6,214,160,0.05); }
    100% { box-shadow: 0 0 25px rgba(6,214,160,0.12); }
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-top: 20px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 36px;
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 4px;
    letter-spacing: 0.02em;
}

.stat-divider {
    width: 1px;
    height: 44px;
    background: linear-gradient(180deg, transparent, var(--border), transparent);
}

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

.hero-glow {
    position: absolute;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, var(--primary-glow) 0%, rgba(6,214,160,0.08) 40%, transparent 70%);
    border-radius: 50%;
    animation: glow-pulse 4s ease-in-out infinite;
    filter: blur(40px);
}

.hero-card {
    width: 260px;
    height: 260px;
    background: linear-gradient(135deg, var(--bg-card), var(--bg-tertiary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border: 1px solid rgba(59,130,246,0.15);
    box-shadow: 0 0 80px var(--primary-glow), inset 0 0 40px rgba(59,130,246,0.05);
}

.power-icon {
    font-size: 4.5rem;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 0 20px var(--primary-glow));
}

.pulse-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: 50%;
    animation: pulse 3s ease-out infinite;
}
.pulse-ring.delay-1 { animation-delay: 1s; }
.pulse-ring.delay-2 { animation-delay: 2s; }

/* Orbiting dots */
.hero-card::before,
.hero-card::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 12px var(--primary-glow);
}
.hero-card::before {
    animation: orbit 6s linear infinite;
    offset-path: circle(170px);
}
.hero-card::after {
    animation: orbit 8s linear infinite reverse;
    offset-path: circle(200px);
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
    width: 6px;
    height: 6px;
}

@keyframes orbit {
    from { offset-distance: 0%; }
    to { offset-distance: 100%; }
}
@keyframes pulse {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(2); opacity: 0; }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}
@keyframes glow-pulse {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.15); opacity: 1; }
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    display: block;
    width: 24px;
    height: 40px;
    border: 1.5px solid rgba(255,255,255,0.12);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scroll-bounce 2s infinite;
    box-shadow: 0 0 8px var(--primary-glow);
}

@keyframes scroll-bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(14px); opacity: 0.2; }
}

/* ===== SECTIONS ===== */
.section {
    padding: 110px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 72px;
}

.section-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: 1px solid rgba(59,130,246,0.15);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.02rem;
    line-height: 1.75;
    margin-top: 16px;
}

/* ===== ABOUT ===== */
.about { background: var(--bg-primary); }

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

.about-card {
    text-align: center;
    padding: 48px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(59,130,246,0.06), transparent);
    opacity: 0;
    transition: var(--transition);
}

.about-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}
.about-card:hover::before { opacity: 1; }

.about-icon { font-size: 2.5rem; margin-bottom: 20px; position: relative; z-index: 1; }
.about-card h3 { margin-bottom: 12px; position: relative; z-index: 1; }
.about-card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.65; position: relative; z-index: 1; }

/* ===== SERVICES ===== */
.services { background: var(--bg-secondary); }

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-card {
    background: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* Bottom gradient line on hover */
.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.service-card:hover::after { transform: scaleX(1); }

.service-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}

.service-card.featured {
    background: linear-gradient(145deg, rgba(59,130,246,0.12), rgba(6,214,160,0.06));
    border-color: rgba(59,130,246,0.25);
}
.service-card.featured::after { transform: scaleX(1); }
.service-card.featured p { color: var(--text-secondary); }
.service-card.featured .service-number { color: rgba(59,130,246,0.12); }

.service-number {
    font-size: 3rem;
    font-weight: 800;
    color: rgba(255,255,255,0.03);
    position: absolute;
    top: 12px;
    right: 20px;
    line-height: 1;
}

.service-icon { font-size: 2rem; margin-bottom: 16px; }
.service-card h3 { margin-bottom: 10px; }
.service-card p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.6; }

.service-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    padding: 5px 16px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
    margin-top: 16px;
}

/* ===== PRODUCTS ===== */
.products { background: var(--bg-primary); }

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.product-card {
    display: flex;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
    background: var(--bg-card);
}

.product-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
    border-color: var(--border-hover);
}

.product-img-placeholder {
    width: 170px;
    min-height: 200px;
    background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(6,214,160,0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    flex-shrink: 0;
}

.product-info {
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-category {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}

.product-info h3 { margin-bottom: 8px; }
.product-info p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.55; }

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
}
.product-link:hover { color: var(--accent); gap: 10px; }

/* ===== WHY US ===== */
.why-us { background: var(--bg-secondary); }

.why-us-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.why-us-content .section-tag { display: inline-block; }
.why-us-content h2 { margin: 16px 0; }
.why-us-content p { color: var(--text-secondary); font-size: 1.02rem; line-height: 1.75; }

.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.why-card {
    background: var(--bg-card);
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* Left accent bar on hover */
.why-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    transition: height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 0 3px 0;
}
.why-card:hover::before { height: 100%; }

.why-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.why-number {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.why-card h4 { margin-bottom: 6px; }
.why-card p { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.55; }

/* ===== CLIENTS ===== */
.clients { background: var(--bg-primary); overflow: hidden; }

.clients-marquee {
    overflow: hidden;
    margin-bottom: 72px;
    mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
    display: flex;
    gap: 14px;
    animation: marquee 35s linear infinite;
    width: max-content;
}

.client-chip {
    flex-shrink: 0;
    padding: 12px 24px;
    background: var(--bg-card);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    white-space: nowrap;
    transition: var(--transition);
}
.client-chip:hover { border-color: var(--border-hover); color: var(--text-primary); }

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

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

.testimonial-card {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 12px;
    right: 24px;
    font-size: 4rem;
    font-weight: 800;
    color: rgba(59,130,246,0.06);
    line-height: 1;
    font-family: Georgia, serif;
}

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

.testimonial-stars {
    color: #FBBF24;
    font-size: 0.9rem;
    margin-bottom: 16px;
    letter-spacing: 3px;
}

.testimonial-card > p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.65;
    font-style: italic;
    margin-bottom: 24px;
}

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

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.testimonial-author strong { display: block; font-size: 0.88rem; }
.testimonial-author span { font-size: 0.78rem; color: var(--text-muted); }

/* ===== CTA SECTION ===== */
.cta-section {
    background: var(--bg-secondary);
    padding: 40px 0 110px;
}

.cta-box {
    background: linear-gradient(145deg, #0B1130, #090D20);
    border-radius: var(--radius-xl);
    padding: 80px 60px;
    text-align: center;
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
}

.cta-glow {
    position: absolute;
    top: -40%;
    right: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary-glow), transparent 60%);
    border-radius: 50%;
    filter: blur(60px);
    animation: cta-glow-move 6s ease-in-out infinite alternate;
}

@keyframes cta-glow-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-40px, 30px); }
}

.cta-box h2 { position: relative; z-index: 1; margin-bottom: 16px; }
.cta-box > p {
    position: relative;
    z-index: 1;
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto;
}

.cta-actions {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 36px;
    flex-wrap: wrap;
}

/* ===== CONTACT ===== */
.contact { background: var(--bg-primary); }

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    align-items: start;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.contact-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.contact-icon { font-size: 1.5rem; margin-bottom: 12px; }
.contact-card h4 { margin-bottom: 8px; font-size: 0.9rem; }
.contact-card p { color: var(--text-muted); font-size: 0.82rem; line-height: 1.6; }

/* Form */
.contact-form {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

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

.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font);
    font-size: 0.88rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: var(--bg-tertiary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394A3B8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    color: var(--text-muted);
    padding: 64px 0 0;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border);
}

.footer-brand .logo { color: var(--text-primary); margin-bottom: 16px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.65; max-width: 300px; }
.footer-links h4 { color: var(--text-primary); margin-bottom: 16px; font-size: 0.9rem; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.82rem; color: var(--text-muted); }
.footer-links a:hover { color: var(--primary); }
.footer-links li:not(:has(a)) { font-size: 0.82rem; }

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

.footer-bottom p { font-size: 0.78rem; color: var(--text-muted); }

/* ===== SCROLL REVEAL ANIMATIONS ===== */
[data-aos] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered delays */
[data-aos][data-delay="1"] { transition-delay: 0.1s; }
[data-aos][data-delay="2"] { transition-delay: 0.2s; }
[data-aos][data-delay="3"] { transition-delay: 0.3s; }
[data-aos][data-delay="4"] { transition-delay: 0.4s; }
[data-aos][data-delay="5"] { transition-delay: 0.5s; }
[data-aos][data-delay="6"] { transition-delay: 0.6s; }

/* Slide from left */
[data-aos="slide-right"] { opacity: 0; transform: translateX(-50px); }
[data-aos="slide-right"].aos-animate { opacity: 1; transform: translateX(0); }

/* Scale up */
[data-aos="zoom-in"] { opacity: 0; transform: scale(0.9); }
[data-aos="zoom-in"].aos-animate { opacity: 1; transform: scale(1); }

/* ===== RESPONSIVE — TABLETS ===== */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; gap: 48px; text-align: center; }
    .hero-subtitle { margin: 20px auto 0; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { order: -1; }
    .hero-card { width: 200px; height: 200px; }
    .hero-card::before { offset-path: circle(130px); }
    .hero-card::after { offset-path: circle(160px); }
    .power-icon { font-size: 3.5rem; }
    .hero-glow { width: 320px; height: 320px; }

    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
    .why-us-wrapper { grid-template-columns: 1fr; gap: 40px; }
    .products-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== RESPONSIVE — MOBILE ===== */
@media (max-width: 768px) {
    .nav-links, .nav-cta { display: none; }
    .hamburger { display: flex; }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
        animation: menu-slide 0.35s ease;
    }

    @keyframes menu-slide {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .nav-links.active a { font-size: 1rem; color: var(--text-secondary); }

    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    .hero { padding: 100px 0 60px; min-height: auto; }
    .hero-scroll { display: none; }

    .section { padding: 72px 0; }
    .section-header { margin-bottom: 48px; }

    .services-grid,
    .about-grid,
    .products-grid,
    .testimonials-grid,
    .why-us-grid,
    .contact-info { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }

    .product-card { flex-direction: column; }
    .product-img-placeholder { width: 100%; min-height: 130px; }

    .cta-box { padding: 48px 24px; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form { padding: 24px; }

    .hero-stats { flex-wrap: wrap; gap: 24px; justify-content: center; }
    .stat-divider { display: none; }

    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* ===== RESPONSIVE — SMALL PHONES ===== */
@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    .container { padding: 0 16px; }

    .hero-badge { font-size: 0.72rem; padding: 6px 14px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .hero-actions .btn { width: 100%; }
    .btn-lg { padding: 14px 28px; font-size: 0.88rem; }

    .hero-card { width: 160px; height: 160px; }
    .hero-card::before { offset-path: circle(100px); }
    .hero-card::after { offset-path: circle(120px); }
    .hero-glow { width: 240px; height: 240px; }
    .power-icon { font-size: 2.8rem; }

    .about-card { padding: 32px 20px; }
    .service-card { padding: 28px 20px; }
    .why-card { padding: 22px; }
    .contact-card { padding: 20px; }
    .testimonial-card { padding: 24px; }

    .stat-number { font-size: 1.8rem; }
    .stat-suffix { font-size: 1.2rem; }
    .stat-label { font-size: 0.72rem; }
}

/* ===== TABLET TWEAKS ===== */
@media (min-width: 769px) and (max-width: 1024px) {
    .services-grid { gap: 16px; }
    .service-card { padding: 30px 22px; }
    .about-card { padding: 36px 22px; }
}