/* ===== Variables ===== */
:root {
    --primary: #0019FF;
    --primary-dark: #0011CC;
    --primary-light: #3344FF;
    --black: #0a0a0a;
    --dark: #1a1a1a;
    --gray-900: #222;
    --gray-700: #555;
    --gray-500: #888;
    --gray-300: #ccc;
    --gray-100: #f5f5f7;
    --white: #ffffff;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font);
    color: var(--dark);
    line-height: 1.6;
    background: var(--white);
    overflow-x: hidden;
}

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

ul { list-style: none; }

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

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

.section {
    padding: 100px 0;
}

/* ===== Section Headers ===== */
.section__header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section__label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 12px;
}

.section__title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--black);
    margin-bottom: 16px;
}

.section__title span {
    color: var(--primary);
}

.section__description {
    font-size: 1.1rem;
    color: var(--gray-700);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 50px;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.btn--primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.btn--primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 25, 255, 0.35);
}

.btn--outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

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

/* ===== Header / Nav ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

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

.nav__logo img {
    height: 40px;
    transition: var(--transition);
}

.nav__logo-dark {
    display: none;
}

.header.scrolled .nav__logo-light {
    display: none;
}

.header.scrolled .nav__logo-dark {
    display: block;
}

.header.scrolled .nav__logo img {
    height: 36px;
}

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

.nav__link {
    padding: 8px 18px;
    font-size: 0.925rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    border-radius: 50px;
    transition: var(--transition);
}

.nav__link:hover,
.nav__link.active {
    color: var(--white);
}

.header.scrolled .nav__link {
    color: var(--gray-700);
}

.header.scrolled .nav__link:hover,
.header.scrolled .nav__link.active {
    color: var(--primary);
}

.nav__link--cta {
    background: var(--primary);
    color: var(--white) !important;
    padding: 10px 24px;
    margin-left: 8px;
}

.nav__link--cta:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.nav__link--lang {
    font-weight: 700 !important;
    letter-spacing: 0.5px;
    opacity: 0.8;
    font-size: 0.85rem !important;
}

.nav__link--lang:hover {
    opacity: 1;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

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

.header.scrolled .nav__toggle span {
    background: var(--dark);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--black);
}

.hero__bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 25, 255, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 25, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(0, 25, 255, 0.08) 0%, transparent 50%);
}

.hero__bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    border: 1px solid rgba(0, 25, 255, 0.1);
    animation: heroOrbit 30s linear infinite;
}

.hero__bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    border: 1px solid rgba(0, 25, 255, 0.08);
    animation: heroOrbit 25s linear infinite reverse;
}

@keyframes heroOrbit {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero__content {
    position: relative;
    max-width: 800px;
    padding: 120px 0 80px;
}

.hero__badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 25, 255, 0.15);
    border: 1px solid rgba(0, 25, 255, 0.3);
    border-radius: 50px;
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 28px;
    animation: fadeInUp 0.8s ease;
}

.hero__title {
    font-size: clamp(3rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.05;
    color: var(--white);
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero__title--highlight {
    display: block;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.7;
    max-width: 560px;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: fadeInUp 0.8s ease 0.5s both;
}

.hero__scroll a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero__scroll i {
    animation: bounce 2s infinite;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(8px); }
    60% { transform: translateY(4px); }
}

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

.about__image-wrapper {
    position: relative;
}

.about__img {
    aspect-ratio: 4/5;
    width: 100%;
    object-fit: cover;
    border-radius: var(--radius);
}

.about__image-placeholder {
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.2);
}

.about__image-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 60%;
    height: 60%;
    border: 3px solid var(--primary);
    border-radius: var(--radius);
    z-index: -1;
}

.about__content p {
    color: var(--gray-700);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
}

.about__feature {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.about__feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 25, 255, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.about__feature h4 {
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--black);
}

.about__feature p {
    font-size: 0.925rem !important;
    margin-bottom: 0 !important;
    color: var(--gray-500) !important;
}

/* ===== Services ===== */
.services {
    background: var(--gray-100);
}

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

.service-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px 32px;
    transition: var(--transition);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 25, 255, 0.1);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card--featured {
    background: var(--primary);
    color: var(--white);
}

.service-card--featured::before {
    background: var(--white);
}

.service-card__icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    background: rgba(0, 25, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 24px;
}

.service-card--featured .service-card__icon {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--gray-700);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.service-card--featured p {
    color: rgba(255, 255, 255, 0.8);
}

.service-card__link {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.service-card__link i {
    transition: var(--transition);
}

.service-card__link:hover i {
    transform: translateX(4px);
}

.service-card--featured .service-card__link {
    color: var(--white);
}

/* ===== Portfolio ===== */
.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 280px;
    gap: 20px;
}

.portfolio-card--large {
    grid-column: span 2;
}

.portfolio-card {
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
}

.portfolio-card__image {
    position: relative;
    width: 100%;
    height: 100%;
}

.portfolio-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-card__image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 1;
    transition: var(--transition);
}

.portfolio-card:hover .portfolio-card__image::before {
    background: rgba(0, 0, 0, 0.55);
}

.portfolio-card__placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.3);
}

.portfolio-card__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 32px 24px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    color: var(--white);
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
    z-index: 2;
}

.portfolio-card:hover .portfolio-card__overlay {
    transform: translateY(0);
    opacity: 1;
}

.portfolio-card__category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.portfolio-card__overlay h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.portfolio-card__overlay p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Stats ===== */
.stats {
    background: var(--black);
    padding: 80px 0;
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat__number {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat__number::after {
    content: '+';
}

.stat__label {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 500;
}

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

.testimonial-card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius);
    padding: 36px;
    transition: var(--transition);
}

.testimonial-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.testimonial-card__stars {
    color: #FFB800;
    font-size: 0.9rem;
    margin-bottom: 16px;
    display: flex;
    gap: 2px;
}

.testimonial-card p {
    color: var(--gray-700);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

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

.testimonial-card__avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.testimonial-card__author h4 {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--black);
}

.testimonial-card__author span {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* ===== Contact ===== */
.contact {
    background: var(--gray-100);
}

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

.contact__info p {
    color: var(--gray-700);
    font-size: 1.05rem;
    margin-bottom: 32px;
}

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

.contact__detail {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact__detail-icon {
    width: 48px;
    height: 48px;
    background: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact__detail h4 {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 2px;
    color: var(--black);
}

.contact__detail p {
    font-size: 0.95rem !important;
    margin-bottom: 0 !important;
    color: var(--gray-700);
}

.contact__form-wrapper {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

.contact__form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form__group--full {
    grid-column: span 2;
}

.contact__form input,
.contact__form select,
.contact__form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.95rem;
    color: var(--dark);
    transition: var(--transition);
    background: var(--white);
    outline: none;
}

.contact__form input:focus,
.contact__form select:focus,
.contact__form textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 25, 255, 0.1);
}

.contact__form textarea {
    resize: vertical;
}

.contact__form .btn {
    grid-column: span 2;
    margin-top: 8px;
}

/* ===== Footer ===== */
.footer {
    background: var(--black);
    padding: 80px 0 0;
    color: rgba(255, 255, 255, 0.7);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
    height: 40px;
    margin-bottom: 16px;
}

.footer__brand p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer__social {
    display: flex;
    gap: 12px;
}

.footer__social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer__social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.footer__links h4,
.footer__contact h4 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1rem;
}

.footer__links li {
    margin-bottom: 10px;
}

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

.footer__contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.925rem;
}

.footer__contact i {
    color: var(--primary);
    width: 16px;
}

.footer__bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ===== Scroll Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

    .portfolio__grid {
        grid-template-columns: 1fr 1fr;
        grid-auto-rows: 240px;
    }

    .portfolio-card--large {
        grid-column: span 1;
    }

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

    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 360px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 4px;
        transition: var(--transition);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
    }

    .nav__menu.active {
        right: 0;
    }

    .nav__link {
        color: var(--dark) !important;
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }

    .nav__link:hover,
    .nav__link.active {
        background: var(--gray-100);
        color: var(--primary) !important;
    }

    .nav__link--cta {
        color: var(--white) !important;
        margin-left: 0;
        margin-top: 12px;
    }

    .nav__toggle {
        display: flex;
    }

    .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);
    }

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

    .about__image {
        order: -1;
    }

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

    .portfolio__grid {
        grid-template-columns: 1fr;
        grid-auto-rows: 220px;
    }

    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

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

    .contact__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .form__group--full,
    .contact__form .btn {
        grid-column: span 1;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .hero__title {
        font-size: clamp(2.5rem, 10vw, 3.5rem);
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        justify-content: center;
    }
}