/* =====================================================
   ЭПД-Партнёр / EPD-Partner — Main stylesheet
   Modern dark theme with gradient accents, animations,
   responsive layout and accessibility in mind.
   ===================================================== */

/* -------------------- CSS Variables -------------------- */
:root {
    --color-bg: #0b0f1a;
    --color-bg-elevated: #111827;
    --color-surface: rgba(17, 24, 39, 0.7);
    --color-surface-solid: #151d2e;
    --color-border: rgba(148, 163, 184, 0.15);
    --color-text: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-text-dim: #64748b;
    --color-primary: #38bdf8;
    --color-primary-dark: #0ea5e9;
    --color-secondary: #818cf8;
    --color-accent: #f59e0b;
    --color-success: #22c55e;
    --color-error: #ef4444;

    --gradient-hero: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
    --gradient-card: linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(129, 140, 248, 0.08));
    --gradient-featured: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(56, 189, 248, 0.08));
    --gradient-mesh: radial-gradient(circle at 15% 25%, rgba(56, 189, 248, 0.18) 0%, transparent 40%),
                       radial-gradient(circle at 85% 15%, rgba(129, 140, 248, 0.14) 0%, transparent 35%),
                       radial-gradient(circle at 70% 85%, rgba(245, 158, 11, 0.1) 0%, transparent 35%);

    --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.25);
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);

    --header-height: 72px;
}

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

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

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

img, svg, video {
    display: block;
    max-width: 100%;
}

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

button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

input, select, textarea {
    font: inherit;
}

/* -------------------- Utilities -------------------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

/* -------------------- Background mesh -------------------- */
.page-wrapper {
    position: relative;
    min-height: 100vh;
}

.bg-mesh {
    position: fixed;
    inset: 0;
    z-index: -2;
    background: var(--color-bg);
    overflow: hidden;
    pointer-events: none;
}

.bg-mesh::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-mesh);
    opacity: 0.7;
}

.bg-mesh__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: orbFloat 20s ease-in-out infinite;
}

.bg-mesh__orb--1 {
    width: 500px;
    height: 500px;
    background: rgba(56, 189, 248, 0.22);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.bg-mesh__orb--2 {
    width: 400px;
    height: 400px;
    background: rgba(129, 140, 248, 0.18);
    top: 40%;
    right: -8%;
    animation-delay: -7s;
}

.bg-mesh__orb--3 {
    width: 350px;
    height: 350px;
    background: rgba(245, 158, 11, 0.14);
    bottom: 10%;
    left: 30%;
    animation-delay: -14s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 40px) scale(0.95); }
}

.bg-mesh__particles {
    position: absolute;
    inset: 0;
    opacity: 0.35;
}

/* -------------------- Buttons -------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-base), background var(--transition-base), border-color var(--transition-base);
    white-space: nowrap;
}

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

.btn--primary {
    background: var(--gradient-hero);
    color: #0b0f1a;
    border: none;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.25);
}

.btn--primary:hover {
    box-shadow: 0 8px 30px rgba(56, 189, 248, 0.4);
}

.btn--glow {
    position: relative;
}

.btn--glow::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 999px;
    background: inherit;
    filter: blur(12px);
    opacity: 0.5;
    z-index: -1;
    transition: opacity var(--transition-base);
}

.btn--glow:hover::after {
    opacity: 0.8;
}

.btn--outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.1);
}

.btn--outline:hover {
    border-color: rgba(56, 189, 248, 0.4);
    background: rgba(56, 189, 248, 0.08);
    box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.2);
}

.btn--small {
    padding: 10px 20px;
    font-size: 0.85rem;
}

.btn--full {
    width: 100%;
}

/* -------------------- Header -------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-height);
    transition: background var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
    background: rgba(11, 15, 26, 0.85);
    backdrop-filter: blur(16px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--color-border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.03em;
}

.logo__icon {
    font-size: 1.5rem;
}

.logo__accent {
    color: var(--color-primary);
}

.nav__list {
    display: flex;
    gap: 32px;
}

.nav__link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-hero);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-text);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
    width: 100%;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header__phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.header__phone:hover {
    color: var(--color-primary);
}

.header__phone-icon {
    flex-shrink: 0;
}

.burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 6px;
}

.burger__line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.burger--active .burger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.burger--active .burger__line:nth-child(2) {
    opacity: 0;
}

.burger--active .burger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* -------------------- Sections common -------------------- */
.section {
    padding: 110px 0;
    position: relative;
}

.section__header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 60px;
}

.section__badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(56, 189, 248, 0.12);
    color: var(--color-primary);
    border: 1px solid rgba(56, 189, 248, 0.2);
    margin-bottom: 18px;
}

.section__title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 18px;
}

.section__title--left {
    text-align: left;
}

.section__desc {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

/* -------------------- Hero -------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    position: relative;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    grid-template-rows: auto 1fr;
    gap: 24px 60px;
    align-items: start;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(56, 189, 248, 0.12);
    color: var(--color-primary);
    border: 1px solid rgba(56, 189, 248, 0.25);
    margin-bottom: 24px;
    animation: fadeInDown 0.8s var(--transition-slow) both;
}

.hero__title {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s 0.15s var(--transition-slow) both;
}

.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--color-text-muted);
    max-width: 560px;
    margin-bottom: 36px;
    animation: fadeInUp 0.8s 0.3s var(--transition-slow) both;
}

.hero__content {
    grid-column: 1;
    grid-row: 1 / 3;
    align-self: start;
    padding-top: 20px;
}

.hero__cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s 0.45s var(--transition-slow) both;
}

.hero__stats {
    display: flex;
    gap: 40px;
    animation: fadeInUp 0.8s 0.6s var(--transition-slow) both;
}

.hero__stat {
    display: flex;
    flex-direction: column;
}

.hero__stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
}

.hero__stat-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.hero__countdown {
    padding: 22px 26px;
    border-radius: var(--radius-md);
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.2);
    backdrop-filter: blur(8px);
    animation: fadeInUp 0.8s 0.75s var(--transition-slow) both;
    max-width: 520px;
}

.hero__countdown--visual {
    grid-column: 2;
    grid-row: 1;
    position: relative;
    top: auto;
    right: auto;
    z-index: 10;
    max-width: 360px;
    justify-self: end;
    align-self: start;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    transform: none;
    animation: fadeInDown 0.8s 0.75s var(--transition-slow) both;
}

.hero__countdown-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
    text-align: center;
}

.hero__countdown-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.hero__countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 8px;
    border-radius: var(--radius-sm);
    background: rgba(11, 15, 26, 0.5);
    border: 1px solid var(--color-border);
    min-width: 60px;
}

.hero__countdown-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}

.hero__countdown-label {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.hero__visual {
    grid-column: 2;
    grid-row: 2;
    position: relative;
    min-height: 420px;
    perspective: 1000px;
    padding-top: 0;
    align-self: start;
}

.hero__card {
    position: absolute;
    padding: 24px 28px;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 220px;
    transition: transform var(--transition-base);
    animation: cardFloat 6s ease-in-out infinite;
}

.hero__card--etrn {
    top: 16%;
    left: 5%;
    animation-delay: 0s;
}

.hero__card--etd {
    top: 42%;
    right: 5%;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(17, 24, 39, 0.8));
    border-color: rgba(245, 158, 11, 0.25);
    animation-delay: -2s;
}

.hero__card--esv {
    bottom: 6%;
    left: 15%;
    animation-delay: -4s;
}

.hero__card-label {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-text);
}

.hero__card-sublabel {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.hero__card:hover {
    transform: translateY(-8px) rotateX(4deg);
}

@keyframes cardFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-16px); }
}

.hero__scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--color-text-muted);
    animation: bounce 2s infinite;
}

.hero__scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* -------------------- About -------------------- */
.section--about {
    background: rgba(17, 24, 39, 0.4);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.about-card {
    display: flex;
    flex-direction: column;
    padding: 28px;
    border-radius: var(--radius-md);
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(56, 189, 248, 0.3);
}

.about-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: rgba(56, 189, 248, 0.1);
    color: var(--color-primary);
    margin-bottom: 20px;
}

.about-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.about-card__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.about__notice {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    border-radius: var(--radius-md);
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.about__notice-icon {
    font-size: 1.4rem;
    flex-shrink: 0;
}

.about__notice-text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* -------------------- Services -------------------- */
.section--services {
    position: relative;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    display: flex;
    flex-direction: column;
    padding: 28px;
    border-radius: var(--radius-md);
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    position: relative;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(56, 189, 248, 0.3);
}

.service-card--featured {
    background: var(--gradient-featured);
    border-color: rgba(245, 158, 11, 0.25);
}

.service-card--featured:hover {
    border-color: rgba(245, 158, 11, 0.45);
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.18);
}

.service-card__badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-accent);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.service-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: rgba(56, 189, 248, 0.1);
    color: var(--color-primary);
    margin-bottom: 20px;
}

.service-card--featured .service-card__icon {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-accent);
}

.service-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* -------------------- Why important -------------------- */
.section--why {
    background: rgba(17, 24, 39, 0.4);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.why__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.why-card {
    padding: 28px;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
    transition: transform var(--transition-base), border-color var(--transition-base);
}

.why-card:hover {
    transform: translateY(-6px);
    border-color: rgba(239, 68, 68, 0.25);
}

.why-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    margin-bottom: 18px;
}

.why-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.why-card__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* -------------------- How to order -------------------- */
.section--howto {
    background: rgba(17, 24, 39, 0.4);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 16px;
}

.step {
    flex: 1;
    max-width: 300px;
    text-align: center;
    padding: 0 10px;
}

.step__circle {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    color: var(--color-primary);
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.1);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.step:hover .step__circle {
    transform: scale(1.08);
    box-shadow: 0 0 28px rgba(56, 189, 248, 0.2);
}

.step__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.step__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.step__connector {
    width: 60px;
    height: 1px;
    margin-top: 36px;
    background: linear-gradient(to right, transparent, var(--color-primary), transparent);
    opacity: 0.4;
    flex-shrink: 0;
}

/* -------------------- Order section -------------------- */
.section--order {
    position: relative;
}

.order {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 60px;
    align-items: start;
}

.order__info {
    padding-top: 20px;
}

.order__text {
    color: var(--color-text-muted);
    font-size: 1.05rem;
    margin-bottom: 32px;
}

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

.order__contact {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.order__contact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-dim);
    font-weight: 600;
}

.order__contact-value {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text);
}

.order__contact-value:hover {
    color: var(--color-primary);
}

/* Order form */
.order-form {
    padding: 36px;
    border-radius: var(--radius-lg);
    background: var(--color-surface-solid);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.order-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-hero);
}

.order-form__header {
    margin-bottom: 28px;
}

.order-form__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.order-form__subtitle {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.order-form__fields {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group--honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-group--half {
    flex: 1;
}

.form-group__label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.form-group__input {
    width: 100%;
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.form-group__input::placeholder {
    color: var(--color-text-dim);
}

.form-group__input:hover {
    border-color: rgba(56, 189, 248, 0.25);
}

.form-group__input:focus {
    outline: none;
    border-color: rgba(56, 189, 248, 0.5);
    background: rgba(15, 23, 42, 0.8);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
}

.form-group__input--select {
    appearance: none;
    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' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 42px;
}

.form-group__input--textarea {
    resize: vertical;
    min-height: 90px;
}

.order-form__footer {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.order-form__note {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    text-align: center;
}

.order-form__status {
    min-height: 24px;
    margin-top: 16px;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.order-form__status--visible {
    opacity: 1;
    transform: translateY(0);
}

.order-form__status--success {
    color: var(--color-success);
}

.order-form__status--error {
    color: var(--color-error);
}

/* -------------------- Contacts -------------------- */
.section--contacts {
    padding-bottom: 60px;
}

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

.contacts__block {
    padding: 28px;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
}

.contacts__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.contacts__list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contacts__item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.contacts__icon {
    font-size: 1.3rem;
    line-height: 1;
}

.contacts__label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 2px;
}

.contacts__value {
    font-weight: 600;
    color: var(--color-text);
}

.contacts__value:hover {
    color: var(--color-primary);
}

.contacts__subvalue {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.contacts__list--requisites {
    gap: 10px;
}

.contacts__requisite {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contacts__requisite-name {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.contacts__requisite-value {
    font-family: 'SF Mono', ui-monospace, monospace;
    font-size: 0.9rem;
    word-break: break-all;
}

.contacts__text {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.btn--telegram {
    width: 100%;
}

.contacts__actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contacts__actions .btn {
    width: 100%;
    padding: 12px 18px;
    font-size: 0.9rem;
}

/* -------------------- Footer -------------------- */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 28px 0;
    background: rgba(11, 15, 26, 0.6);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer__copy {
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.footer__links {
    display: flex;
    gap: 24px;
}

.footer__link {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer__link:hover {
    color: var(--color-primary);
}

.footer__contacts {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer__contact {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

/* -------------------- Reveal animations -------------------- */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--transition-slow), transform 0.7s var(--transition-slow);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* -------------------- Responsive -------------------- */
@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        text-align: center;
        gap: 50px;
    }

    .hero__content {
        grid-column: auto;
        grid-row: auto;
    }

    .hero__subtitle,
    .hero__cta,
    .hero__stats,
    .hero__countdown:not(.hero__countdown--visual) {
        justify-content: center;
        margin-left: auto;
        margin-right: auto;
    }

    .hero__countdown--visual {
        grid-column: auto;
        grid-row: auto;
        position: relative;
        margin: 0 auto;
        max-width: 420px;
        justify-self: center;
        align-self: auto;
    }

    .hero__visual {
        grid-column: auto;
        grid-row: auto;
        min-height: auto;
        padding-top: 30px;
    }

    .hero__card--etrn { top: 8%; }
    .hero__card--etd { top: 36%; }
    .hero__card--esv { bottom: 8%; }

    .about__grid,
    .services__grid,
    .why__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .order {
        grid-template-columns: 1fr;
    }

    .order__info {
        text-align: center;
    }

    .section__title--left {
        text-align: center;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    .header__phone span {
        display: none;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(11, 15, 26, 0.98);
        backdrop-filter: blur(20px);
        border-top: 1px solid var(--color-border);
        padding: 32px 20px;
        transform: translateX(100%);
        transition: transform var(--transition-base);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav--open {
        transform: translateX(0);
    }

    .nav__list {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .nav__link {
        font-size: 1.2rem;
    }

    .burger {
        display: flex;
    }

    .section {
        padding: 80px 0;
    }

    .about__grid,
    .services__grid,
    .why__grid {
        grid-template-columns: 1fr;
    }

    .contacts__grid {
        grid-template-columns: 1fr;
    }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: 32px;
    }

    .step__connector {
        display: none;
    }

    .step {
        max-width: 100%;
    }

    .hero__inner {
        display: flex;
        flex-direction: column;
        gap: 32px;
    }

    .hero__content {
        order: 0;
    }

    .hero__visual {
        grid-column: auto;
        grid-row: auto;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .hero__card {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
        bottom: auto;
        width: 100%;
        max-width: 320px;
        animation: none;
    }

    .hero__card:hover {
        transform: translateY(-4px);
    }

    .hero__countdown--visual {
        order: -1;
        grid-column: auto;
        grid-row: auto;
        max-width: 100%;
        width: 100%;
        margin-bottom: 10px;
        justify-self: auto;
        align-self: auto;
        transform: none;
    }

    .order-form {
        padding: 24px;
    }

    .form-row {
        flex-direction: column;
        gap: 18px;
    }

    .footer__inner {
        flex-direction: column;
        text-align: center;
    }

    .footer__brand {
        flex-direction: column;
        gap: 8px;
    }

    .footer__contacts {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 2rem;
    }

    .hero__stats {
        flex-direction: column;
        gap: 16px;
    }

    .hero__countdown {
        max-width: 100%;
        padding: 18px 14px;
    }

    .hero__countdown--visual {
        padding: 16px 12px;
    }

    .hero__countdown-grid {
        gap: 6px;
    }

    .hero__countdown-item {
        padding: 10px 4px;
        min-width: auto;
    }

    .hero__countdown-value {
        font-size: 1.2rem;
    }

    .hero__countdown-label {
        font-size: 0.65rem;
    }

    .btn {
        padding: 12px 22px;
        font-size: 0.9rem;
    }

    .order-form {
        padding: 20px;
    }

    .section__title {
        font-size: 1.6rem;
    }
}

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

    html {
        scroll-behavior: auto;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
    }
}