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

:root {
    --bg: #0a0a0f;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --text: #e4e4e7;
    --text-muted: #71717a;
    --text-dim: #52525b;
    --accent-1: #6366f1;
    --accent-2: #ec4899;
    --accent-3: #8b5cf6;
    --gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    --gradient-text: linear-gradient(135deg, #818cf8, #f472b6);
    --font-fa: 'Vazirmatn', system-ui, sans-serif;
    --font-en: 'Inter', system-ui, sans-serif;
    --radius: 16px;
    --radius-sm: 8px;
    --radius-full: 9999px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body[dir="ltr"] {
    font-family: var(--font-en);
}

a {
    text-decoration: none;
    color: inherit;
}

img { max-width: 100%; }

/* ===== Animated Background ===== */
.bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: -3;
}

.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -2;
    opacity: 0.4;
    pointer-events: none;
}

.bg-glow--1 {
    width: 600px;
    height: 600px;
    background: var(--accent-1);
    top: -200px;
    right: -200px;
    animation: glow-float 20s ease-in-out infinite;
}

.bg-glow--2 {
    width: 500px;
    height: 500px;
    background: var(--accent-2);
    bottom: -150px;
    left: -150px;
    animation: glow-float 25s ease-in-out infinite reverse;
}

.bg-glow--3 {
    width: 400px;
    height: 400px;
    background: var(--accent-3);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.2;
    animation: glow-float 18s ease-in-out infinite 5s;
}

@keyframes glow-float {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(30px, -30px); }
    50% { transform: translate(-20px, 20px); }
    75% { transform: translate(20px, 30px); }
}

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

.nav--scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

.nav__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1;
}

.nav__logo span {
    display: inline-block;
    transform: translateY(1px);
}

.nav__logo-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

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

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

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform var(--transition);
}

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

.nav__link:hover::after {
    transform: scaleX(1);
}

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

.lang-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    font-family: var(--font-en);
}

.lang-toggle:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

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

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

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

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
}

.hero__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

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

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
    50% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

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

.hero__desc {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 580px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

[dir="ltr"] .btn svg {
    transform: none;
}

[dir="rtl"] .btn svg {
    transform: scaleX(-1);
}

.btn--primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

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

.btn--ghost:hover {
    border-color: var(--border-hover);
    background: var(--bg-card);
}

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

/* Hero Stats */
.hero__stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.hero__stat {
    text-align: center;
}

.hero__stat-num {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero__stat-divider {
    width: 1px;
    background: var(--border);
    align-self: stretch;
}

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

.hero__scroll-line {
    width: 1px;
    height: 48px;
    background: var(--border);
    position: relative;
    overflow: hidden;
}

.hero__scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 50%;
    background: var(--gradient);
    animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
    0% { top: -50%; }
    100% { top: 150%; }
}

/* ===== Sections ===== */
.section__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section__header {
    text-align: center;
    margin-bottom: 64px;
}

.section__tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-1);
    margin-bottom: 16px;
}

.section__title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section__desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 520px;
    margin: 0 auto;
}

/* ===== Services ===== */
.services {
    padding: 120px 0;
}

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

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

.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    opacity: 0;
    transition: opacity var(--transition);
    z-index: 0;
}

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

.service-card:hover::before {
    opacity: 0.04;
}

.service-card > * {
    position: relative;
    z-index: 1;
}

.service-card--featured {
    border-color: rgba(99, 102, 241, 0.3);
    background: rgba(99, 102, 241, 0.05);
}

.service-card__badge {
    position: absolute;
    top: 16px;
    left: 16px;
    right: auto;
    background: var(--gradient);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    z-index: 2;
}

[dir="rtl"] .service-card__badge {
    left: auto;
    right: 16px;
}

.service-card__icon {
    width: 48px;
    height: 48px;
    color: var(--accent-1);
    margin-bottom: 20px;
}

.service-card__icon svg {
    width: 100%;
    height: 100%;
}

.service-card__title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card__desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

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

.service-card__tags span {
    font-size: 0.75rem;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-muted);
}

/* ===== Portfolio ===== */
.portfolio {
    padding: 120px 0;
}

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

.portfolio-card {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: var(--transition);
    cursor: pointer;
}

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

.portfolio-card__img {
    height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.portfolio-card__mockup {
    width: 100%;
    max-width: 320px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: transform var(--transition);
}

.portfolio-card:hover .portfolio-card__mockup {
    transform: scale(1.05);
}

.mockup-bar {
    display: flex;
    gap: 6px;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.2);
}

.mockup-bar span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.mockup-content {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mockup-line {
    height: 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.15);
}

.mockup-line--lg { width: 80%; }
.mockup-line--md { width: 60%; }
.mockup-line--sm { width: 40%; }

.mockup-grid-small {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(50px, 1fr));
    gap: 8px;
}

.mockup-box {
    height: 40px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
}

.mockup-box--tall {
    height: 64px;
}

.mockup-hero-block {
    height: 48px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.12);
}

.portfolio-card__info {
    padding: 20px 24px;
}

.portfolio-card__cat {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-1);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.portfolio-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-top: 6px;
}

.portfolio-card__link {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--accent-1);
    margin-top: 6px;
    font-weight: 500;
    transition: var(--transition);
}

.portfolio-card:hover .portfolio-card__link {
    color: var(--accent-2);
}

a.portfolio-card {
    display: block;
}

.portfolio-card__img--real {
    background: #111 !important;
    padding: 0 !important;
    overflow: hidden;
}

.portfolio-card__img--real img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.portfolio-card:hover .portfolio-card__img--real img {
    transform: scale(1.05);
}

/* ===== Process ===== */
.process {
    padding: 120px 0;
}

.process__timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.process__timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

[dir="rtl"] .process__timeline::before {
    right: 28px;
}

[dir="ltr"] .process__timeline::before {
    left: 28px;
}

.process__step {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    margin-bottom: 48px;
    position: relative;
}

.process__step:last-child {
    margin-bottom: 0;
}

.process__step-num {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 50%;
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--accent-1);
    z-index: 1;
    transition: var(--transition);
}

.process__step:hover .process__step-num {
    border-color: var(--accent-1);
    background: rgba(99, 102, 241, 0.1);
}

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

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

/* ===== About ===== */
.about {
    padding: 120px 0;
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about__content .section__tag,
.about__content .section__title {
    text-align: start;
}

.about__text {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about__values {
    display: flex;
    gap: 24px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.about__value {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 600;
}

.about__value-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-1);
}

.about__value-icon svg {
    width: 100%;
    height: 100%;
}

.about__visual {
    position: relative;
    height: 400px;
}

.about__card {
    position: absolute;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: var(--transition);
    animation: float 6s ease-in-out infinite;
}

.about__card:hover {
    border-color: var(--border-hover);
    transform: scale(1.05);
}

.about__card-icon {
    width: 36px;
    height: 36px;
    color: var(--accent-1);
    flex-shrink: 0;
}

.about__card-icon svg {
    width: 100%;
    height: 100%;
}

.about__card--1 {
    top: 20px;
    right: 10%;
    animation-delay: 0s;
}

.about__card--2 {
    top: 50%;
    left: 5%;
    transform: translateY(-50%);
    animation-delay: 2s;
}

.about__card--3 {
    bottom: 20px;
    right: 15%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ===== Testimonials ===== */
.testimonials {
    padding: 120px 0;
}

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

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

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

.testimonial-card__stars {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    color: #f59e0b;
}

.testimonial-card__stars svg {
    width: 18px;
    height: 18px;
}

.testimonial-card__text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 24px;
}

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

.testimonial-card__avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.testimonial-card__name {
    font-size: 0.9rem;
    font-weight: 600;
}

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

/* ===== Contact ===== */
.contact {
    padding: 120px 0;
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact__info .section__tag,
.contact__info .section__title {
    text-align: start;
}

.contact__desc {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.8;
}

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

.contact__detail {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.95rem;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.contact__detail-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent-1);
}

.contact__detail-icon svg {
    width: 20px;
    height: 20px;
}

/* Form */
.contact__form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form__group {
    position: relative;
}

.form__input {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form__input:focus {
    border-color: var(--accent-1);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form__label {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: var(--transition);
}

[dir="rtl"] .form__label {
    right: 20px;
}

[dir="ltr"] .form__label {
    left: 20px;
}

.form__input:focus + .form__label,
.form__input:not(:placeholder-shown) + .form__label {
    top: -8px;
    font-size: 0.75rem;
    background: var(--bg);
    padding: 0 6px;
    color: var(--accent-1);
}

.form__textarea {
    min-height: 120px;
    resize: vertical;
}

.form__textarea + .form__label {
    top: 20px;
    transform: none;
}

.form__textarea:focus + .form__label,
.form__textarea:not(:placeholder-shown) + .form__label {
    top: -8px;
    transform: none;
}

.form__select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}

.form__select option {
    background: var(--bg);
    color: var(--text);
}

/* ===== Footer ===== */
.footer {
    border-top: 1px solid var(--border);
    padding: 48px 0 32px;
}

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

.footer__top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
}

.footer__tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 12px;
}

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

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

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

.footer__bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    text-align: center;
}

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

/* ===== Animations ===== */
.animate-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Stagger children */
.services__grid .animate-in:nth-child(2) { transition-delay: 0.1s; }
.services__grid .animate-in:nth-child(3) { transition-delay: 0.2s; }
.services__grid .animate-in:nth-child(4) { transition-delay: 0.3s; }
.services__grid .animate-in:nth-child(5) { transition-delay: 0.4s; }
.services__grid .animate-in:nth-child(6) { transition-delay: 0.5s; }

.portfolio__grid .animate-in:nth-child(2) { transition-delay: 0.1s; }
.portfolio__grid .animate-in:nth-child(3) { transition-delay: 0.2s; }
.portfolio__grid .animate-in:nth-child(4) { transition-delay: 0.3s; }

.process__timeline .animate-in:nth-child(2) { transition-delay: 0.1s; }
.process__timeline .animate-in:nth-child(3) { transition-delay: 0.2s; }
.process__timeline .animate-in:nth-child(4) { transition-delay: 0.3s; }

.testimonials__grid .animate-in:nth-child(2) { transition-delay: 0.1s; }
.testimonials__grid .animate-in:nth-child(3) { transition-delay: 0.2s; }

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

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

    .about__grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about__visual {
        height: 300px;
    }

    .contact__grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .nav__links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
        z-index: 999;
    }

    .nav__links.active {
        display: flex;
    }

    .nav__links .nav__link {
        font-size: 1.4rem;
    }

    .nav__burger {
        display: flex;
        z-index: 1001;
    }

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

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

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

    .hero__stats {
        gap: 24px;
    }

    .hero__stat-divider {
        display: none;
    }

    .footer__top {
        flex-direction: column;
        gap: 24px;
    }

    .footer__links {
        flex-wrap: wrap;
        gap: 16px;
    }

    .about__visual {
        height: 350px;
    }

    .about__card--1 { top: 10px; right: 0; }
    .about__card--2 { top: 45%; left: 0; }
    .about__card--3 { bottom: 10px; right: 5%; }
}

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

    .section__title {
        font-size: 1.6rem;
    }

    .hero__cta {
        flex-direction: column;
        align-items: center;
    }

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

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

/* ===== Selection ===== */
::selection {
    background: rgba(99, 102, 241, 0.3);
    color: #fff;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}