/* ============================================
   PLAINROW — App Studio Theme
   Clean White & Green · Mobile-First
   ============================================ */

/* ── CSS Variables — Light (default) ── */
:root {
    --color-bg: #ffffff;
    --color-bg-elevated: #f8fafb;
    --color-bg-card: #ffffff;
    --color-bg-card-hover: #f0fdf8;

    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;

    --color-accent: #10b981;
    --color-accent-dark: #059669;
    --color-accent-light: #34d399;
    --color-accent-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);

    --color-border: #e2e8f0;
    --color-border-hover: #a7f3d0;

    --navbar-bg: rgba(255, 255, 255, 0.92);
    --navbar-bg-scrolled: rgba(255, 255, 255, 0.98);

    --shadow-sm:   0 1px 3px rgba(0,0,0,0.06);
    --shadow-md:   0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg:   0 12px 40px rgba(0,0,0,0.12);
    --shadow-card: 0 2px 12px rgba(0,0,0,0.06);
    --shadow-card-hover: 0 8px 30px rgba(16,185,129,0.15);

    --gradient-bg-1: rgba(16, 185, 129, 0.06);
    --gradient-bg-2: rgba(5, 150, 105, 0.03);

    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --transition-fast:   0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow:   0.4s ease;
}

/* ── Dark Theme ── */
[data-theme="dark"] {
    --color-bg: #090e0b;
    --color-bg-elevated: #0f1712;
    --color-bg-card: rgba(16, 185, 129, 0.04);
    --color-bg-card-hover: rgba(16, 185, 129, 0.09);

    --color-text: #f8fafc;
    --color-text-secondary: rgba(248,250,252,0.65);
    --color-text-muted: rgba(248,250,252,0.38);

    --color-border: rgba(16, 185, 129, 0.14);
    --color-border-hover: rgba(16, 185, 129, 0.28);

    --gradient-bg-1: rgba(16, 185, 129, 0.09);
    --gradient-bg-2: rgba(5, 150, 105, 0.06);

    --navbar-bg: rgba(9, 14, 11, 0.88);
    --navbar-bg-scrolled: rgba(9, 14, 11, 0.97);

    --shadow-sm:   0 2px 8px rgba(0,0,0,0.4);
    --shadow-md:   0 8px 30px rgba(0,0,0,0.5);
    --shadow-lg:   0 20px 60px rgba(0,0,0,0.6);
    --shadow-card: 0 2px 12px rgba(0,0,0,0.4);
    --shadow-card-hover: 0 8px 30px rgba(16,185,129,0.2);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    scrollbar-gutter: stable;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

::selection { background: var(--color-accent); color: white; }

/* ── Scroll Progress Bar ── */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: var(--color-accent-gradient);
    z-index: 9999;
    transition: width 0.1s linear;
    border-radius: 0 2px 2px 0;
}

/* ── Background ── */
.bg-gradient {
    position: fixed;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background:
        radial-gradient(circle at 25% 15%, var(--gradient-bg-1) 0%, transparent 45%),
        radial-gradient(circle at 75% 85%, var(--gradient-bg-2) 0%, transparent 45%);
    z-index: -2;
    pointer-events: none;
    animation: gradientFloat 22s ease-in-out infinite;
}

@keyframes gradientFloat {
    0%,100% { transform: translate(0,0); }
    40% { transform: translate(20px,-20px); }
    70% { transform: translate(-15px,15px); }
}

.bg-grid {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.25;
    z-index: -1;
    pointer-events: none;
}

/* ── Navbar ── */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: 0.75rem 2rem;
    background: var(--navbar-bg-scrolled);
    box-shadow: var(--shadow-sm);
}

.navbar__logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.2rem;
    transition: opacity var(--transition-fast);
    flex-shrink: 0;
}

.navbar__logo:hover { opacity: 0.8; }

.logo-icon {
    width: 30px; height: 30px;
    color: var(--color-accent);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.logo-icon svg { width: 100%; height: 100%; }

.navbar__links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.navbar__links > a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.navbar__links > a::after {
    content: '';
    position: absolute;
    bottom: -3px; left: 0;
    width: 0; height: 2px;
    background: var(--color-accent-gradient);
    transition: width var(--transition-normal);
    border-radius: 2px;
}

.navbar__links > a:hover { color: var(--color-text); }
.navbar__links > a:hover::after { width: 100%; }

/* ── Burger ── */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    flex-shrink: 0;
}

.burger span {
    width: 22px; height: 2px;
    background: var(--color-text);
    transition: all var(--transition-normal);
    border-radius: 2px;
    display: block;
}

.burger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.burger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.burger.active span:nth-child(3) { transform: rotate(-45deg) translate(7px,-7px); }

/* ── Language Switcher ── */
.lang-switcher { position: relative; }

.lang-switcher button {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.75rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.lang-switcher button:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.lang-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    list-style: none;
    min-width: 130px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-normal);
    z-index: 100;
    overflow: hidden;
}

.lang-menu.active { opacity: 1; visibility: visible; transform: translateY(0); }

.lang-menu li {
    padding: 0.7rem 1rem;
    cursor: pointer;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.lang-menu li:hover { background: var(--color-bg-card-hover); color: var(--color-accent); }

/* ── Theme Switcher ── */
.theme-switcher { display: flex; }

.theme-switcher button {
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-switcher button:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.theme-switcher svg { width: 18px; height: 18px; }

/* ── Success Popup ── */
.success-popup {
    position: fixed;
    top: 5rem; right: 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-lg);
    transform: translateX(calc(100% + 2rem));
    transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
    z-index: 10000;
    max-width: calc(100vw - 3rem);
}

.success-popup.show { transform: translateX(0); }
.success-popup svg { color: var(--color-accent); flex-shrink: 0; }
.success-popup span { color: var(--color-text); font-weight: 500; font-size: 0.9rem; }

/* ═══════════════════════════════
   HERO
═══════════════════════════════ */
.hero {
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 1.5rem 5rem;
    position: relative;
    overflow: hidden;
}

.hero__content { max-width: 860px; margin: 0 auto; position: relative; z-index: 1; }

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease;
    letter-spacing: 0.01em;
}

.badge-dot {
    width: 7px; height: 7px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%,100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

.hero__title {
    font-size: clamp(2.4rem, 7vw, 4.8rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.gradient-text {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: clamp(1rem, 2.2vw, 1.2rem);
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.85;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero__cta-group {
    display: flex;
    gap: 0.875rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    min-height: 48px;
}

.hero__cta--primary {
    background: var(--color-accent-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(16,185,129,0.28);
}

.hero__cta--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(16,185,129,0.4);
}

.hero__cta--secondary {
    background: var(--color-bg-card);
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}

.hero__cta--secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

/* ── Hero Deco Cards ── */
.hero__deco {
    position: absolute;
    width: 100%; height: 100%;
    top: 0; left: 0;
    pointer-events: none;
    z-index: 0;
}

.deco-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    box-shadow: var(--shadow-md);
    animation: float 6s ease-in-out infinite;
}

.deco-card .deco-icon {
    width: 24px; height: 24px;
    color: var(--color-accent);
    display: flex; align-items: center; justify-content: center;
}
.deco-card .deco-icon svg { width: 100%; height: 100%; }

.deco-card--1 { top: 20%; right: 6%; animation-delay: 0s; }
.deco-card--2 { top: 55%; right: 3%; animation-delay: -2s; }
.deco-card--3 { top: 35%; left: 4%; animation-delay: -4s; }

@keyframes float {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ── Hero Stats ── */
.hero__stats {
    display: flex;
    align-items: center;
    gap: 3rem;
    margin-top: 4rem;
    animation: fadeInUp 0.6s ease 0.4s backwards;
    position: relative;
    z-index: 1;
}

.stat-item { text-align: center; }

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.4rem;
}

.stat-label { font-size: 0.82rem; color: var(--color-text-muted); font-weight: 500; }

.stat-divider {
    width: 1px; height: 36px;
    background: var(--color-border);
    flex-shrink: 0;
}

/* ── Scroll Hint ── */
.scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-text-muted);
    animation: scrollBounce 2s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes scrollBounce {
    0%,100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(6px); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════
   SECTION BASE
═══════════════════════════════ */
.section {
    padding: 6rem 2rem;
    position: relative;
}

.section__header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 4rem;
}

.section__label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    margin-bottom: 0.875rem;
}

.section__title {
    font-size: clamp(1.8rem, 4.5vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section__desc {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ═══════════════════════════════
   SERVICES — Product Grid
═══════════════════════════════ */
.section--services { background: var(--color-bg); }

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.25rem;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background: var(--color-bg-card);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    cursor: default;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    outline: none;
}

.product-card:focus-visible {
    box-shadow: 0 0 0 3px rgba(16,185,129,0.3);
}

.product-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 0;
}

.product-card:hover { border-color: var(--color-accent); transform: translateY(-5px); box-shadow: var(--shadow-card-hover); }
.product-card:hover::after { opacity: 0.02; }

.product-card--featured {
    border-color: var(--color-accent);
    background: linear-gradient(145deg, var(--color-bg-card) 0%, rgba(16,185,129,0.03) 100%);
}

.product-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.product-card__icon { width: 60px; height: 60px; }
.product-card__icon svg { width: 100%; height: 100%; filter: drop-shadow(0 4px 10px rgba(16,185,129,0.18)); }

.product-card__badge {
    padding: 0.3rem 0.7rem;
    background: rgba(16,185,129,0.1);
    color: var(--color-accent-dark);
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    border: 1px solid rgba(16,185,129,0.2);
}

.product-card__content { position: relative; z-index: 1; }

.featured-badge {
    display: inline-block;
    padding: 0.3rem 0.7rem;
    background: var(--color-accent-gradient);
    color: white;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: 0.04em;
}

.product-card__title { font-size: 1.35rem; font-weight: 700; margin-bottom: 0.2rem; }
.product-card__subtitle { font-size: 0.85rem; color: var(--color-accent); font-weight: 600; margin-bottom: 0.875rem; }
.product-card__desc { color: var(--color-text-secondary); line-height: 1.7; margin-bottom: 1.25rem; font-size: 0.95rem; }

.product-card__tags { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.tag {
    padding: 0.3rem 0.65rem;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.78rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.product-card:hover .tag {
    border-color: rgba(16,185,129,0.25);
    color: var(--color-accent-dark);
}

/* ═══════════════════════════════
   PROCESS SECTION
═══════════════════════════════ */
.section--process { background: var(--color-bg-elevated); }

.process-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    max-width: 1100px;
    margin: 0 auto 4rem;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 200px;
    max-width: 240px;
    text-align: center;
    position: relative;
}

.process-step__num {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 1rem;
    opacity: 0.8;
}

.process-step__icon {
    width: 60px; height: 60px;
    margin: 0 auto 1.25rem;
    display: flex; align-items: center; justify-content: center;
    background: rgba(16,185,129,0.1);
    border-radius: var(--radius-lg);
    color: var(--color-accent);
    transition: all var(--transition-normal);
}

.process-step:hover .process-step__icon {
    background: var(--color-accent-gradient);
    color: white;
    transform: scale(1.08);
    box-shadow: 0 8px 24px rgba(16,185,129,0.3);
}

.process-step__icon svg { width: 26px; height: 26px; }

.process-step__body { padding: 0 1rem; }

.process-step__title { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem; }
.process-step__desc { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.65; }

.process-connector {
    display: flex;
    align-items: center;
    padding-top: 1.7rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.process-connector svg { width: 32px; height: 10px; opacity: 0.4; }

/* Visual cards reuse from original */
.process-visual {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: 380px;
    margin: 0 auto;
}

.visual-card {
    background: var(--color-bg-card);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: all var(--transition-normal);
}

.visual-card:hover {
    border-color: var(--color-accent);
    transform: translateX(6px);
    box-shadow: var(--shadow-card-hover);
}

.visual-icon {
    width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(16,185,129,0.1);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    flex-shrink: 0;
}
.visual-icon svg { width: 28px; height: 28px; }

.visual-text { flex: 1; }

.visual-value {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.2rem;
}

.visual-label { font-size: 0.875rem; color: var(--color-text-secondary); font-weight: 500; }

/* ═══════════════════════════════
   CONTACTS
═══════════════════════════════ */
.section--contacts { background: var(--color-bg); }

.contacts-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1100px;
    margin: 0 auto;
    align-items: start;
}

.contacts-info .section__label { display: block; text-align: left; }
.contacts-info .section__title { text-align: left; margin-bottom: 1rem; }

.contacts-desc {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.contacts-features {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.feature-item svg { color: var(--color-accent); flex-shrink: 0; }

.contacts-links { display: flex; flex-direction: column; gap: 0.875rem; }

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.1rem 1.25rem;
    background: var(--color-bg-card);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.contact-link:hover { border-color: var(--color-accent); transform: translateX(4px); }

.contact-link__icon {
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(16,185,129,0.1);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-link__text { display: flex; flex-direction: column; gap: 0.2rem; }
.contact-link__label { font-size: 0.78rem; color: var(--color-text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.contact-link__value { font-size: 0.95rem; color: var(--color-text); font-weight: 600; }

/* ── Contact Form ── */
.contact-form {
    background: var(--color-bg-card);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.45rem;
    color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--color-bg-elevated);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text);
    transition: all var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.875rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(16,185,129,0.1);
    background: var(--color-bg-card);
}

.form-group input.error,
.form-group textarea.error { border-color: #ef4444; }
.form-group textarea { resize: vertical; min-height: 110px; }

.form-submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.95rem 2rem;
    background: var(--color-accent-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 52px;
    letter-spacing: 0.01em;
}

.form-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(16,185,129,0.38); }
.form-submit:disabled { opacity: 0.65; cursor: not-allowed; transform: none; }

/* Spinner */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner { animation: spin 0.9s linear infinite; }

/* ═══════════════════════════════
   FOOTER
═══════════════════════════════ */
.footer {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    padding: 4rem 2rem 2rem;
}

.footer__content { max-width: 1100px; margin: 0 auto; }

.footer__main {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer__brand { display: flex; flex-direction: column; gap: 0.875rem; }

.footer__logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.15rem;
    width: fit-content;
    margin-bottom: 0.25rem;
    transition: opacity var(--transition-fast);
}

.footer__logo:hover { opacity: 0.75; }

.footer__tagline { color: var(--color-text); font-size: 0.95rem; font-weight: 600; }
.footer__description { color: var(--color-text-secondary); font-size: 0.9rem; line-height: 1.65; max-width: 420px; }

.footer__email-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-accent);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: opacity var(--transition-fast);
    width: fit-content;
}

.footer__email-badge:hover { opacity: 0.75; }

.footer__nav { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }

.footer__nav-group { display: flex; flex-direction: column; gap: 0.875rem; }

.footer__nav-title {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.footer__links { display: flex; flex-direction: column; gap: 0.6rem; }

.footer__links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    width: fit-content;
}

.footer__links a:hover { color: var(--color-accent); }

.footer__contact-info { display: flex; flex-direction: column; gap: 0.6rem; }

.footer__contact-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    width: fit-content;
}

.footer__contact-link:hover { color: var(--color-accent); }

.footer__bottom {
    max-width: 1100px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.83rem;
}

/* ── Back to Top ── */
.to-top {
    position: fixed;
    bottom: 1.75rem; right: 1.75rem;
    width: 46px; height: 46px;
    display: flex; align-items: center; justify-content: center;
    background: var(--color-accent-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* ── Fade-in animations ── */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ════════════════════════════════
   RESPONSIVE — Tablet
════════════════════════════════ */
@media (max-width: 1024px) {
    .contacts-wrapper { grid-template-columns: 1fr; gap: 3rem; }
    .contacts-info .section__title,
    .contacts-info .section__label { text-align: center; }
    .contacts-desc { text-align: center; }
    .contacts-features { align-items: center; }
    .contacts-links { align-items: center; }

    .deco-card--1,
    .deco-card--2,
    .deco-card--3 { display: none; }
}

/* ════════════════════════════════
   RESPONSIVE — Mobile
════════════════════════════════ */
@media (max-width: 768px) {
    /* Navbar */
    .navbar { padding: 0.9rem 1.25rem; }
    .navbar.scrolled { padding: 0.7rem 1.25rem; }

    .navbar__links {
        position: fixed;
        top: 0; right: 0; bottom: 0;
        width: 280px;
        max-width: 82vw;
        height: 100dvh;
        background: var(--navbar-bg-scrolled);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        border-left: 1px solid var(--color-border);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        gap: 0.25rem;
        transform: translateX(100%);
        transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
        padding: 5.5rem 1.25rem 2rem;
        z-index: 999;
        overflow-y: auto;
        box-shadow: -8px 0 32px rgba(0,0,0,0.12);
    }

    .navbar__links.active { transform: translateX(0); }

    .navbar__links > a {
        font-size: 1rem;
        font-weight: 600;
        padding: 0.9rem 1rem;
        border-radius: var(--radius-md);
        transition: all var(--transition-fast);
        border-left: 3px solid transparent;
    }

    .navbar__links > a:hover,
    .navbar__links > a:focus {
        background: var(--color-bg-card-hover);
        color: var(--color-accent);
        border-left-color: var(--color-accent);
    }

    .navbar__links > a::after { display: none; }

    .lang-switcher { margin-top: 1.5rem; }
    .lang-switcher button { width: 100%; justify-content: space-between; padding: 0.9rem 1rem; font-size: 0.9rem; }
    .lang-menu { width: 100%; position: static; box-shadow: none; border: 1px solid var(--color-border); opacity: 1 !important; visibility: visible !important; transform: none !important; display: none; }
    .lang-menu.active { display: block; }

    .theme-switcher { margin-top: 0.5rem; }
    .theme-switcher button { width: 100%; height: 46px; justify-content: center; border-radius: var(--radius-md); }

    .burger { display: flex; }

    /* Overlay */
    body.menu-open::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.45);
        z-index: 998;
        animation: fadeIn 0.25s ease;
    }

    @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

    /* Hero */
    .hero {
        padding: 6.5rem 1.25rem 3.5rem;
        min-height: 100svh;
    }

    .hero__title { font-size: clamp(2rem, 9vw, 3rem); }
    .hero__subtitle { font-size: 0.95rem; }

    .hero__cta-group { flex-direction: column; width: 100%; max-width: 340px; margin: 0 auto; }
    .hero__cta { width: 100%; justify-content: center; }

    .hero__stats {
        gap: 1.5rem;
        margin-top: 3rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .stat-divider { display: none; }
    .stat-value { font-size: 1.6rem; }

    /* Sections */
    .section { padding: 4rem 1.25rem; }
    .section__header { margin-bottom: 2.5rem; }

    /* Services */
    .products-grid { grid-template-columns: 1fr; gap: 1rem; }
    .product-card { padding: 1.5rem; }

    /* Process */
    .process-steps { flex-direction: column; align-items: center; gap: 2rem; }
    .process-step { max-width: 100%; width: 100%; }
    .process-connector { transform: rotate(90deg); padding: 0; }

    /* Contact */
    .contacts-wrapper { gap: 2.5rem; }
    .contact-form { padding: 1.75rem 1.25rem; }

    /* Footer */
    .footer { padding: 3rem 1.25rem 1.5rem; }
    .footer__main { grid-template-columns: 1fr; gap: 2.5rem; }
    .footer__nav { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
    .footer__description { max-width: 100%; }

    /* Success popup — full width on mobile, hidden above viewport */
    .success-popup {
        left: 1rem; right: 1rem;
        top: 5rem;
        transform: translateY(calc(-100% - 6rem));
    }
    .success-popup.show { transform: translateY(0); }

    /* To top */
    .to-top { bottom: 1.25rem; right: 1.25rem; width: 42px; height: 42px; }
}

@media (max-width: 480px) {
    .footer__nav { grid-template-columns: 1fr; }
    .section { padding: 3.5rem 1rem; }
    .contact-form { padding: 1.5rem 1rem; }
    .process-visual { max-width: 100%; }
}