/* ============================================================
   CIDIA — Creative Digital Automation
   Дизайн-система: тёмная тема, glassmorphism, оранжевый акцент
   ============================================================ */

/* ============ 1. Design Tokens ============ */

:root {
    /* --- Colours --- */
    --color-bg:            #f5f5f5;
    --color-bg-elevated:   #ebebeb;
    --color-surface:       rgba(255, 255, 255, 0.35);
    --color-surface-hover: rgba(255, 255, 255, 0.5);

    --color-text:          #1a1a1a;
    --color-text-secondary:#555555;
    --color-text-muted:    #888888;
    --color-text-dim:      #b0b0b0;

    --color-border:        rgba(0, 0, 0, 0.08);
    --color-border-hover:  rgba(0, 0, 0, 0.18);
    --color-border-accent: rgba(255, 107, 0, 0.3);

    --color-accent:        #ff6b00;
    --color-accent-hover:  #e55f00;
    --color-accent-glow:   rgba(255, 107, 0, 0.08);

    /* --- Spacing scale (4px base) --- */
    --sp-1:  4px;
    --sp-2:  8px;
    --sp-3:  12px;
    --sp-4:  16px;
    --sp-5:  20px;
    --sp-6:  24px;
    --sp-8:  32px;
    --sp-10: 40px;
    --sp-12: 48px;
    --sp-16: 64px;
    --sp-20: 80px;
    --sp-24: 96px;

    /* --- Typography --- */
    --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:  'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;

    --text-xs:   11px;
    --text-sm:   14px;
    --text-base: 16px;
    --text-lg:   18px;
    --text-xl:   20px;
    --text-2xl:  24px;
    --text-3xl:  clamp(28px, 4vw, 36px);
    --text-4xl:  clamp(36px, 5.5vw, 56px);
    --text-5xl:  clamp(44px, 7vw, 80px);

    --leading-tight:  1.1;
    --leading-normal: 1.6;
    --leading-relaxed:1.75;

    --tracking-tight:  -0.03em;
    --tracking-normal:  0;
    --tracking-wide:    0.04em;
    --tracking-wider:   0.1em;
    --tracking-widest:  0.18em;

    /* --- Radius --- */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* --- Shadows --- */
    --shadow-card:       0 4px 24px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    --shadow-glow:       0 0 40px rgba(255, 107, 0, 0.06);

    /* --- Blur --- */
    --blur-glass: blur(5px);

    /* --- Transitions --- */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 0.15s;
    --duration-normal: 0.25s;
    --duration-slow: 0.4s;

    /* --- Layout --- */
    --container-max: 1200px;
    --container-pad: clamp(20px, 5vw, 48px);
    --header-h: 68px;
    --section-pad: clamp(72px, 10vw, 120px);
}

/* ============ 2. Reset & Base ============ */

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

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

body {
    min-width: 320px;
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg-elevated); }
::-webkit-scrollbar-thumb {
    background: var(--color-text-dim);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; color: inherit; }

/* ============ 3. Typography ============ */

h1, h2, h3, h4 {
    font-weight: 600;
    letter-spacing: var(--tracking-tight);
    line-height: var(--leading-tight);
}

h1 { font-size: var(--text-5xl); font-weight: 700; }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-xl); font-weight: 500; }

p { color: var(--color-text-secondary); line-height: var(--leading-relaxed); }

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

.accent { color: var(--color-accent); }

/* ============ 4. Layout Utilities ============ */

.row   { display: flex; flex-direction: row; }
.col   { display: flex; flex-direction: column; }
.wrap  { flex-wrap: wrap; }
.static{ flex: 0 0 auto; }
.flex  { flex: 1 1 auto; }

.row.hcenter  { justify-content: center; }
.row.vcenter  { align-items: center; }
.row.between  { justify-content: space-between; }
.col.hcenter  { align-items: center; }
.col.vcenter  { justify-content: center; }

.stretch > * { flex-grow: 1; width: 100%; }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
    position: relative;
    z-index: 2;
}

/* ============ 5. Particles & Effects ============ */

.particles-js-bg {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.particles-js-bg canvas {
    display: block;
    filter: blur(3px);
    -webkit-filter: blur(3px);
}

.particles-js-hero {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: auto;
}

.particles-js-hero canvas {
    display: block;
}

.grain-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 180px 180px;
}

/* ============ 6. Shared Components ============ */

/* --- Glass Card --- */

.glass-card {
    background: rgba(255, 255, 255, 0.45);
    backdrop-filter: var(--blur-glass);
    -webkit-backdrop-filter: var(--blur-glass);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    padding: var(--sp-8);
    transition:
        background var(--duration-normal) var(--ease-smooth),
        border-color var(--duration-normal) var(--ease-smooth),
        box-shadow var(--duration-normal) var(--ease-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
    pointer-events: none;
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.55);
    border-color: rgba(255, 255, 255, 0.65);
    box-shadow: var(--shadow-card-hover);
}

/* --- Section --- */

.section {
    padding: var(--section-pad) 0;
    position: relative;
    /* Прозрачная — частицы просвечивают сквозь glass-card */
}

.section-alt {
    position: relative;
}

/* Очень лёгкая подложка для разделения чередующихся секций */
.section-alt::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.02);
    pointer-events: none;
}

.section-alt > .container {
    position: relative;
    z-index: 1;
}

.section-header {
    margin-bottom: var(--sp-16);
    max-width: 600px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    margin-bottom: var(--sp-5);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.tag-bracket { color: var(--color-text-muted); }

.section-title {
    margin-bottom: var(--sp-4);
    color: var(--color-text);
}

.section-desc {
    max-width: 500px;
    color: var(--color-text-secondary);
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
}

/* --- Buttons --- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    padding: var(--sp-3) var(--sp-8);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition:
        background var(--duration-fast) var(--ease-smooth),
        border-color var(--duration-fast) var(--ease-smooth),
        color var(--duration-fast) var(--ease-smooth),
        transform var(--duration-fast) var(--ease-out);
}

.btn:active { transform: scale(0.97); }

.btn-primary {
    background: var(--color-accent);
    color: #fff;
}
.btn-primary:hover {
    background: var(--color-accent-hover);
}

.btn-secondary {
    color: var(--color-text);
    border: 1px solid var(--color-border-hover);
    background: transparent;
}
.btn-secondary:hover {
    border-color: var(--color-text);
}

/* --- Reveal Animation --- */

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

/* ============ 7. Header ============ */

.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--header-h);
    background: rgba(245, 245, 245, 0.8);
    backdrop-filter: var(--blur-glass);
    -webkit-backdrop-filter: var(--blur-glass);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--duration-normal) var(--ease-smooth);
}

.site-header.scrolled { background: rgba(245, 245, 245, 0.95); }

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--sp-8);
}

.brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.brand-logo {
    width: 130px;
    height: auto;
    color: var(--color-text);
    transition: opacity var(--duration-fast) var(--ease-smooth);
}

.brand:hover .brand-logo { opacity: 0.7; }

.site-nav {
    display: flex;
    gap: var(--sp-8);
    margin-left: auto;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    letter-spacing: var(--tracking-wide);
    transition: color var(--duration-fast) var(--ease-smooth);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width var(--duration-normal) var(--ease-out);
}

.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { width: 100%; }

.header-phone {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    white-space: nowrap;
    transition: color var(--duration-fast) var(--ease-smooth);
}

.header-phone:hover { color: var(--color-accent); }

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    flex-shrink: 0;
}

.menu-toggle span {
    position: absolute;
    left: 50%;
    width: 18px;
    height: 1px;
    background: var(--color-text);
    transform: translateX(-50%);
    transition: all var(--duration-normal) var(--ease-out);
}

.menu-toggle span:nth-child(1) { top: 14px; }
.menu-toggle span:nth-child(2) { top: 50%; transform: translate(-50%, -50%); }
.menu-toggle span:nth-child(3) { bottom: 14px; }

.menu-toggle.active span:nth-child(1) {
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) {
    bottom: 50%;
    transform: translate(-50%, 50%) rotate(-45deg);
}

/* ============ 8. Hero ============ */

.hero {
    min-height: 100vh;
    min-height: 100dvh;
    padding-top: calc(var(--header-h) + var(--sp-20));
    padding-bottom: var(--sp-20);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.particles-js-hero {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4;
    z-index: 0;
}

.hero-content {
    max-width: 820px;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-3);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--sp-6);
}

.hero-subtitle::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--color-accent);
}

.hero-title {
    margin-bottom: var(--sp-6);
    color: var(--color-text);
}

.hero-desc {
    max-width: 540px;
    font-size: var(--text-lg);
    margin-bottom: var(--sp-10);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

.hero-actions {
    display: flex;
    gap: var(--sp-3);
    flex-wrap: wrap;
}

/* --- Scroll Indicator --- */

.scroll-indicator {
    position: absolute;
    bottom: var(--sp-10);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-2);
    z-index: 2;
    opacity: 0.35;
}

.scroll-line {
    width: 1px;
    height: 36px;
    background: linear-gradient(to bottom, var(--color-text-muted), transparent);
    animation: scroll-pulse 2.5s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50%      { opacity: 0.7; transform: scaleY(1.3); }
}

.scroll-text {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: var(--tracking-widest);
    color: var(--color-text-muted);
    text-transform: uppercase;
}

/* ============ 9. Marquee ============ */

.marquee {
    padding: var(--sp-4) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
    position: relative;
    background: var(--color-bg);
}

.marquee::before,
.marquee::after {
    content: '';
    position: absolute;
    top: 0;
    width: 100px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.marquee::before {
    left: 0;
    background: linear-gradient(90deg, var(--color-bg-elevated), transparent);
}
.marquee::after {
    right: 0;
    background: linear-gradient(-90deg, var(--color-bg-elevated), transparent);
}

.marquee-track {
    display: flex;
    gap: var(--sp-10);
    animation: marquee 40s linear infinite;
    width: max-content;
}

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

.marquee-item {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-wider);
    color: var(--color-text-muted);
    white-space: nowrap;
    text-transform: uppercase;
}

.marquee-separator {
    color: var(--color-text-dim);
    opacity: 0.2;
    font-size: 6px;
    display: flex;
    align-items: center;
}

/* ============ 10. Features ============ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-5);
}

.feature-card { padding: var(--sp-8); }

.feature-num {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-accent);
    margin-bottom: var(--sp-4);
    opacity: 0.7;
}

.feature-card h3 {
    margin-bottom: var(--sp-3);
    color: var(--color-text);
}

.feature-card p {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
}

/* ============ 11. Services ============ */

.services-list {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: var(--blur-glass);
    -webkit-backdrop-filter: var(--blur-glass);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.service-row {
    display: grid;
    grid-template-columns: 28px 1fr auto auto 32px;
    align-items: center;
    gap: var(--sp-6);
    padding: var(--sp-5) var(--sp-6);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--duration-normal) var(--ease-smooth);
    cursor: default;
    position: relative;
    background: transparent;
}

.service-row:first-child { border-top: 1px solid var(--color-border); }
.service-row:last-child { border-bottom: none; }

/* Accent line on hover */
.service-row::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-accent);
    transform: scaleY(0);
    transition: transform var(--duration-normal) var(--ease-out);
    transform-origin: center;
}

.service-row:hover {
    background: var(--color-surface-hover);
    padding-left: var(--sp-8);
}

.service-row:hover::before { transform: scaleY(1); }

.service-num {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    transition: color var(--duration-fast) var(--ease-smooth);
}

.service-row:hover .service-num { color: var(--color-accent); }

.service-name {
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-text);
}

.service-desc {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    min-width: 200px;
}

.service-line {
    flex: 1;
    height: 1px;
    background: var(--color-border);
    min-width: 20px;
}

.service-arrow {
    font-size: 18px;
    color: var(--color-text-dim);
    transition: all var(--duration-normal) var(--ease-out);
    text-align: center;
}

.service-row:hover .service-arrow {
    color: var(--color-accent);
    transform: translateX(4px);
}

/* ============ 12. Technologies ============ */

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-5);
}

.tech-card { padding: var(--sp-6); }

.tech-category {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--sp-4);
}

.tech-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--sp-3);
    color: var(--color-text);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: var(--sp-1) var(--sp-3);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    letter-spacing: var(--tracking-wide);
}

/* ============ 13. Pricing ============ */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-4);
    align-items: stretch;
}

.price-card {
    padding: var(--sp-8) var(--sp-6);
    display: flex;
    flex-direction: column;
    gap: var(--sp-5);
}

.price-card.featured {
    border-color: var(--color-border-accent);
    background: var(--color-accent-glow);
    box-shadow: var(--shadow-glow);
}

.price-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.price-card.featured .price-label { color: var(--color-accent); }

.price-amount {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: var(--tracking-tight);
}

.price-amount span {
    font-size: var(--text-base);
    font-weight: 400;
    color: var(--color-text-muted);
}

.price-desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-normal);
}

.price-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
}

.price-features li {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    padding-left: var(--sp-4);
    position: relative;
}

.price-features li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
}

.price-card .btn {
    margin-top: auto;
    width: 100%;
    text-align: center;
    padding: var(--sp-3);
    font-size: var(--text-xs);
}

/* ============ 14. Process ============ */

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.process-step {
    background: var(--color-bg);
    padding: var(--sp-6) var(--sp-5);
    position: relative;
    transition: background var(--duration-normal) var(--ease-smooth);
}

.process-step:hover {
    background: var(--color-bg-elevated);
}

/* Connector dots between steps */
.process-step::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%);
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    z-index: 1;
}

/* Remove connector from last column items */
.process-step:nth-child(4n)::after { display: none; }

.step-num {
    font-family: var(--font-mono);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-muted);
    opacity: 0.5;
    margin-bottom: var(--sp-4);
    line-height: 1;
}

.process-step h3 {
    font-size: var(--text-base);
    margin-bottom: var(--sp-2);
    color: var(--color-text);
}

.process-step p {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
}

/* ============ 15. Contact ============ */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--sp-12);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--sp-6);
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: var(--sp-1);
}

.contact-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.contact-value {
    font-size: var(--text-lg);
    color: var(--color-text);
}

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

.contact-actions {
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
    max-width: 400px;
    padding: var(--sp-8);
    align-items: flex-start;
}

.contact-actions .btn {
    width: 100%;
    justify-content: center;
}

/* ===== Modal ===== */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-slow) var(--ease-out);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    position: relative;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    width: 90vw;
    max-width: 720px;
    max-height: 85vh;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--duration-slow) var(--ease-out);
}

.modal-overlay.open .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--sp-4);
    right: var(--sp-4);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    line-height: 1;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color var(--duration-fast) var(--ease-smooth);
    z-index: 1;
    flex-shrink: 0;
    padding: 0;
}

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

.modal-body {
    padding: var(--sp-8);
    overflow-y: auto;
    max-height: 85vh;
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.2) transparent;
}

.modal-body::-webkit-scrollbar {
    width: 6px;
}

.modal-body::-webkit-scrollbar-track {
    background: transparent;
    border-radius: var(--radius-sm);
}

.modal-body::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-sm);
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

.oferta-content h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--sp-2);
    color: var(--color-text);
}

.oferta-content h3 {
    font-size: var(--text-base);
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-bottom: var(--sp-6);
}

.oferta-content h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    margin-top: var(--sp-6);
    margin-bottom: var(--sp-3);
}

.oferta-content p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--sp-3);
}

.oferta-content ul {
    margin: var(--sp-2) 0 var(--sp-3) var(--sp-6);
    list-style: disc;
}

.oferta-content ul li {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--sp-1);
}

/* ============ 16. Footer ============ */

.site-footer {
    padding: var(--sp-10) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--sp-10);
    margin-bottom: var(--sp-10);
}

.footer-brand { display: flex; flex-direction: column; gap: var(--sp-4); }

.footer-logo {
    width: 100px;
    color: var(--color-text);
}

.footer-brand p {
    font-size: var(--text-sm);
    max-width: 280px;
}

.footer-col-title {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--sp-4);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) var(--ease-smooth);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--sp-6);
    border-top: 1px solid var(--color-border);
}

.footer-copy {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.footer-legal {
    display: flex;
    gap: var(--sp-6);
}

.footer-legal span {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    letter-spacing: var(--tracking-wide);
}

/* ============ 17. Media Queries — Tablet ============ */

@media (max-width: 1024px) {
    /* Hide desktop nav */
    .site-nav { display: none; }

    .nav-link { font-size: var(--text-xl); }
    .nav-link::after { display: none; }
    .menu-toggle { display: block; margin-left: auto; }
    .header-phone { display: none; }

    /* Mobile menu overlay */
    .mobile-menu {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        bottom: 0;
        background: #f5f5f5;
        z-index: 1001;
        transform-origin: top center;
        transform: scaleY(0);
        opacity: 0;
        pointer-events: none;
        transition:
            transform 0.4s var(--ease-out),
            opacity 0.3s var(--ease-out);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .mobile-menu.open {
        transform: scaleY(1);
        opacity: 1;
        pointer-events: auto;
    }

    .mobile-menu-nav {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--sp-8);
    }

    .mobile-nav-link {
        font-family: var(--font-mono);
        font-size: var(--text-2xl);
        color: var(--color-text);
        letter-spacing: var(--tracking-wide);
        transition: color var(--duration-fast) var(--ease-smooth);
        opacity: 0;
        transform: translateY(12px);
    }

    .mobile-menu.open .mobile-nav-link {
        opacity: 1;
        transform: translateY(0);
        transition:
            opacity 0.35s var(--ease-out),
            transform 0.35s var(--ease-out),
            color var(--duration-fast) var(--ease-smooth);
    }

    .mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.08s; }
    .mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.12s; }
    .mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.16s; }
    .mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 0.20s; }
    .mobile-menu.open .mobile-nav-link:nth-child(5) { transition-delay: 0.24s; }
    .mobile-menu.open .mobile-nav-link:nth-child(6) { transition-delay: 0.28s; }

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

    .features-grid { grid-template-columns: 1fr; }
    .tech-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
    .contact-actions { max-width: 100%; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: var(--sp-8); }

    .service-desc { display: none; }
    .service-row { grid-template-columns: 28px 1fr auto 32px; }
}

/* ============ 18. Media Queries — Mobile ============ */

@media (max-width: 768px) {
    .hero { padding-top: calc(var(--header-h) + var(--sp-12)); }
    .particles-js-hero { opacity: 0.5; }

    .glass-card {
        background: rgba(255, 255, 255, 0.5);
        backdrop-filter: blur(5px);
        -webkit-backdrop-filter: blur(5px);
        border: 1px solid rgba(255, 255, 255, 0.4);
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        padding: var(--sp-6);
    }

    .glass-card::before { display: none; }

    .section-header { margin-bottom: var(--sp-10); }
    .section-desc { font-size: var(--text-base); }

    .tech-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .process-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: var(--sp-4); align-items: flex-start; }
    .footer-legal { flex-direction: column; gap: var(--sp-2); }

    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }

    .grain-overlay { opacity: 0.015; }
    .marquee { padding: var(--sp-3) 0; }
    .marquee-track { gap: var(--sp-6); }

    .process-step::after { display: none; }
}

@media (max-width: 480px) {
    .service-row {
        grid-template-columns: 1fr auto 24px;
        padding: var(--sp-4) var(--sp-4);
        gap: var(--sp-3);
    }
    .service-num { display: none; }
    .service-line { display: none; }
    .service-name { font-size: var(--text-base); }

    /* Modal mobile */
    .modal-content {
        width: 95vw;
        max-height: 90vh;
        border-radius: var(--radius-lg);
    }
    .modal-body {
        padding: var(--sp-5);
    }
}

/* ============ 19. Reduced Motion ============ */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .marquee-track { animation: none; }
    .scroll-line { animation: none; }
}