/* ============================================
   OTON Landing — Modern Dark Theme
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-card: #16161a;
    --bg-card-hover: #1c1c21;
    --bg-glass: rgba(22, 22, 26, 0.8);

    --text-primary: #f0f0f3;
    --text-secondary: #8b8b95;
    --text-muted: #55555e;

    --accent-1: #6c5ce7;
    --accent-2: #a855f7;
    --accent-3: #06b6d4;
    --gradient-main: linear-gradient(135deg, #6c5ce7, #a855f7, #06b6d4);
    --gradient-text: linear-gradient(135deg, #a78bfa, #c084fc, #22d3ee);
    --gradient-btn: linear-gradient(135deg, #6c5ce7, #a855f7);
    --gradient-btn-hover: linear-gradient(135deg, #7c6cf7, #b865ff);

    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 60px rgba(108, 92, 231, 0.15);

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

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

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

::selection {
    background: var(--accent-1);
    color: white;
}

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

.section {
    padding: 120px 0;
    position: relative;
}

/* --- Preloader --- */
.preloader {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s, visibility 0.5s;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-inner {
    text-align: center;
}

.preloader-logo {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
    letter-spacing: 4px;
}

.preloader-bar {
    width: 200px;
    height: 3px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
}

.preloader-bar-inner {
    height: 100%;
    width: 0%;
    background: var(--gradient-main);
    border-radius: 2px;
    animation: preloaderBar 1.2s ease-out forwards;
}

@keyframes preloaderBar {
    to { width: 100%; }
}

/* --- Cursor Follower --- */
.cursor-follower {
    position: fixed;
    width: 30px;
    height: 30px;
    border: 1.5px solid rgba(168, 85, 247, 0.4);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.15s ease-out, width 0.3s, height 0.3s, border-color 0.3s;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
}

@media (hover: none) {
    .cursor-follower { display: none; }
}

/* --- Gradient Text --- */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Section Header --- */
.section__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 72px;
}

.section__tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-2);
    margin-bottom: 16px;
    padding: 6px 16px;
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 100px;
    background: rgba(168, 85, 247, 0.08);
}

.section__title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section__desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: var(--gradient-btn);
    color: white;
    box-shadow: 0 4px 24px rgba(108, 92, 231, 0.3);
}

.btn--primary:hover {
    background: var(--gradient-btn-hover);
    box-shadow: 0 6px 32px rgba(108, 92, 231, 0.45);
    transform: translateY(-2px);
}

.btn--outline {
    border: 1.5px solid var(--border-hover);
    color: var(--text-primary);
    background: transparent;
}

.btn--outline:hover {
    border-color: var(--accent-2);
    background: rgba(168, 85, 247, 0.08);
    transform: translateY(-2px);
}

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

/* ===========================
   HEADER / NAV
   =========================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition);
}

.header.scrolled {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
}

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

.nav__logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 1.4rem;
    z-index: 100;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    letter-spacing: 2px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav__link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.nav__link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav__link--cta {
    background: var(--gradient-btn);
    color: white !important;
    padding: 8px 20px;
}

.nav__link--cta:hover {
    opacity: 0.9;
    background: var(--gradient-btn-hover) !important;
}

.nav__link--lang {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 6px 14px;
    border: 1.5px solid var(--border-hover);
    border-radius: 100px;
    color: var(--text-secondary) !important;
    text-transform: uppercase;
}

.nav__link--lang:hover {
    border-color: var(--accent-2);
    color: var(--accent-2) !important;
    background: rgba(168, 85, 247, 0.08);
}

.nav__lang {
    margin-left: 8px;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 100;
    padding: 8px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav */
@media (max-width: 768px) {
    .nav__toggle {
        display: flex;
        z-index: 1001;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 360px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 4px;
        padding: 40px;
        transition: right var(--transition);
        border-left: 1px solid var(--border-color);
        z-index: 1000;
    }

    .nav__menu.open {
        right: 0;
    }

    .nav__link {
        font-size: 1.1rem;
        padding: 12px 20px;
        width: 100%;
        text-align: center;
    }

    .nav__lang {
        margin-left: 0;
        margin-top: 24px;
        padding-top: 20px;
        border-top: 1px solid var(--border-color);
        width: 60%;
        text-align: center;
    }

    .nav__link--lang {
        display: inline-block;
        font-size: 0.85rem;
        padding: 8px 32px;
    }
}

/* ===========================
   HERO
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
}

.hero__glow--1 {
    width: 600px;
    height: 600px;
    background: var(--accent-1);
    top: -200px;
    right: -200px;
    animation: glowPulse 8s ease-in-out infinite;
}

.hero__glow--2 {
    width: 500px;
    height: 500px;
    background: var(--accent-3);
    bottom: -200px;
    left: -200px;
    animation: glowPulse 8s ease-in-out infinite 4s;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

.hero__particles {
    position: absolute;
    inset: 0;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--accent-2);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 6s ease-in-out infinite;
}

@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(0) scale(0); }
    20% { opacity: 0.6; transform: translateY(-30px) scale(1); }
    100% { opacity: 0; transform: translateY(-200px) scale(0); }
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: 100px;
    border: 1px solid var(--border-hover);
    background: rgba(255, 255, 255, 0.04);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 28px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero__actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero__stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat__number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat__plus {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat__label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
}

/* Scroll Indicator */
.hero__scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.mouse-wheel {
    width: 3px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 2px;
    animation: mouseScroll 2s ease-in-out infinite;
}

@keyframes mouseScroll {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(12px); }
}

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

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

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

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-main);
    opacity: 0;
    transition: opacity var(--transition);
}

.service-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(108, 92, 231, 0.1);
    color: var(--accent-2);
    margin-bottom: 20px;
}

.service-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card__desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.service-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-card__tags li {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

@media (max-width: 1024px) {
    .services__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .services__grid { grid-template-columns: 1fr; }
}

/* ===========================
   PORTFOLIO
   =========================== */

/* Featured card (Checkout Guard) */
.portfolio__featured {
    margin-bottom: 48px;
}

.featured-card {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 48px;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    transition: all var(--transition);
}

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

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

.gallery-main {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    max-height: 450px;
}

.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    display: block;
    transition: transform 0.5s ease;
}

.gallery-main:hover img {
    transform: scale(1.03);
}

.gallery-thumb {
    display: flex;
    gap: 12px;
}

.gallery-thumb__img {
    flex: 1;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition);
    object-fit: cover;
    max-height: 120px;
}

.gallery-thumb__img:hover {
    border-color: var(--accent-2);
    opacity: 0.85;
}

.featured-card__title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.featured-card__desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.featured-card__features {
    list-style: none;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.featured-card__features li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.featured-card__features li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-2);
    flex-shrink: 0;
}

/* Portfolio grid */
.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

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

/* Screenshot area */
.project-card__visual {
    position: relative;
}

.project-card__screenshot {
    overflow: hidden;
    background: var(--bg-secondary);
    max-height: 400px;
}

.project-card__screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    display: block;
    transition: transform 0.5s ease;
}

.project-card:hover .project-card__screenshot img {
    transform: scale(1.04);
}

.project-card__screenshot-thumbs {
    display: flex;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(0,0,0,0.3);
}

.project-card__screenshot-thumbs img {
    flex: 1;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition);
}

.project-card__screenshot-thumbs img:hover {
    border-color: var(--accent-2);
    opacity: 0.8;
}

/* Card info */
.project-card__info {
    padding: 24px 28px 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-card__tags {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag--shopify { background: rgba(149, 190, 77, 0.15); color: #95be4d; }
.tag--ai { background: rgba(168, 85, 247, 0.15); color: #a855f7; }
.tag--app { background: rgba(6, 182, 212, 0.15); color: #06b6d4; }
.tag--web { background: rgba(59, 130, 246, 0.15); color: #3b82f6; }
.tag--design { background: rgba(244, 114, 182, 0.15); color: #f472b6; }
.tag--crypto { background: rgba(251, 191, 36, 0.15); color: #fbbf24; }
.tag--fintech { background: rgba(34, 197, 94, 0.15); color: #22c55e; }
.tag--data { background: rgba(6, 182, 212, 0.15); color: #06b6d4; }
.tag--crm { background: rgba(251, 146, 60, 0.15); color: #fb923c; }

.project-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.3;
}

.project-card__desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}

.project-card__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--accent-2);
    transition: all var(--transition);
    margin-top: auto;
}

.project-card__link:hover {
    color: var(--accent-3);
    gap: 10px;
}

@media (max-width: 1024px) {
    .featured-card {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 768px) {
    .portfolio__grid {
        grid-template-columns: 1fr;
    }

    .featured-card {
        padding: 20px;
    }

    .featured-card__title {
        font-size: 1.5rem;
    }

    .project-card__screenshot-thumbs img {
        height: 48px;
    }
}

/* ===========================
   TECHNOLOGIES
   =========================== */
.tech {
    background: var(--bg-secondary);
    overflow: hidden;
}

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

.marquee-track {
    overflow: hidden;
}

.marquee-content {
    display: flex;
    gap: 16px;
    animation: marquee 30s linear infinite;
    width: max-content;
}

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

.tech-pill {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    border-radius: 100px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: all var(--transition);
}

.tech-pill:hover {
    border-color: var(--accent-2);
    color: var(--text-primary);
    background: rgba(168, 85, 247, 0.08);
}

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

.tech-feature {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.tech-feature:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.tech-feature__number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    margin-bottom: 16px;
    line-height: 1;
}

.tech-feature__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.tech-feature__desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 1024px) {
    .tech__features { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .tech__features { grid-template-columns: 1fr; }
}

/* ===========================
   PROCESS / TIMELINE
   =========================== */
.process__timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.process__timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-1), var(--accent-3));
    opacity: 0.3;
}

.timeline-step {
    display: flex;
    gap: 32px;
    padding-bottom: 48px;
    position: relative;
}

.timeline-step:last-child {
    padding-bottom: 0;
}

.timeline-step__marker {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--accent-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    color: var(--accent-2);
    z-index: 1;
    transition: all var(--transition);
}

.timeline-step:hover .timeline-step__marker {
    background: var(--accent-1);
    color: white;
    box-shadow: 0 0 24px rgba(108, 92, 231, 0.4);
}

.timeline-step__content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    margin-top: 4px;
}

.timeline-step__content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 640px) {
    .process__timeline::before {
        left: 20px;
    }
    .timeline-step {
        gap: 20px;
    }
    .timeline-step__marker {
        width: 42px;
        height: 42px;
        font-size: 0.9rem;
    }
}

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

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

.contact__desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.contact__note {
    font-size: 0.92rem;
    color: var(--accent);
    line-height: 1.5;
    margin-bottom: 32px;
    font-style: italic;
    opacity: 0.9;
}

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

.contact-channel {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    transition: all var(--transition);
}

.contact-channel:hover {
    border-color: var(--accent-2);
    background: rgba(168, 85, 247, 0.05);
    transform: translateX(8px);
}

.contact-channel__icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(108, 92, 231, 0.1);
    color: var(--accent-2);
}

.contact-channel__label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.contact-channel__value {
    font-weight: 600;
    font-size: 1rem;
}

.contact-channel--whatsapp:hover {
    border-color: #25d366;
    background: rgba(37, 211, 102, 0.05);
}

.contact-channel--whatsapp .contact-channel__icon {
    background: rgba(37, 211, 102, 0.1);
    color: #25d366;
}

/* Form */
.contact__form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    position: relative;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-2);
    background: rgba(168, 85, 247, 0.03);
    box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.1);
}

.form-group label {
    position: absolute;
    left: 20px;
    top: 16px;
    font-size: 1rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: all var(--transition);
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -8px;
    left: 14px;
    font-size: 0.75rem;
    background: var(--bg-card);
    padding: 0 6px;
    color: var(--accent-2);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b8b95' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-group select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 12px;
}

.form-success {
    display: none;
    text-align: center;
    padding: 48px 24px;
    color: var(--text-primary);
    animation: fadeInUp 0.5s ease;
}

.form-success.show {
    display: block;
}

.form-success svg {
    margin: 0 auto 20px;
    color: #22c55e;
}

.form-success__title {
    font-size: 1.4rem;
    font-weight: 700;
    color: #22c55e;
    margin-bottom: 8px;
}

.form-success p {
    font-size: 1.05rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.form-success__note {
    font-size: 0.88rem !important;
    color: var(--text-secondary) !important;
    font-weight: 400 !important;
    margin-top: 12px !important;
}

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

@media (max-width: 768px) {
    .contact__wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact__form {
        padding: 28px;
    }
}

/* ===========================
   FOOTER
   =========================== */
.footer {
    padding: 64px 0 32px;
    border-top: 1px solid var(--border-color);
}

.footer__top {
    display: flex;
    justify-content: space-between;
    gap: 48px;
    margin-bottom: 48px;
}

.footer__tagline {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 12px;
    max-width: 280px;
}

.footer__links {
    display: flex;
    gap: 64px;
}

.footer__col h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.footer__col a {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 4px 0;
    transition: color var(--transition);
}

.footer__col a:hover {
    color: var(--text-primary);
}

.footer__bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

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

@media (max-width: 768px) {
    .footer__top {
        flex-direction: column;
        gap: 32px;
    }

    .footer__links {
        gap: 32px;
        flex-wrap: wrap;
    }
}

/* ===========================
   ANIMATIONS
   =========================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation for grid items */
.service-card.animate-on-scroll.visible,
.tech-feature.animate-on-scroll.visible {
    transition-delay: calc(var(--stagger, 0) * 100ms);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
    .section {
        padding: 80px 0;
    }

    .section__header {
        margin-bottom: 48px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }

    .hero__stats {
        gap: 24px;
    }

    .stat__number {
        font-size: 2rem;
    }

    .container {
        padding: 0 16px;
    }
}

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

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