/* ========================================
   NEXUS DIGITAL - STYLES
   Paleta: Cyan #00e5ff, Turquesa #00bcd4,
   Azul oscuro #0a0e27, Violeta #7c4dff
   ======================================== */

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

:root {
    --cyan: #00e5ff;
    --cyan-dark: #00bcd4;
    --cyan-glow: rgba(0, 229, 255, 0.3);
    --violet: #7c4dff;
    --violet-glow: rgba(124, 77, 255, 0.3);
    --bg-primary: #060a1a;
    --bg-secondary: #0a0e27;
    --bg-card: #0f1535;
    --bg-card-hover: #141a3d;
    --text-primary: #e8eaf6;
    --text-secondary: #9fa8c7;
    --text-muted: #5c6484;
    --border: rgba(0, 229, 255, 0.1);
    --border-hover: rgba(0, 229, 255, 0.3);
    --gradient: linear-gradient(135deg, var(--cyan) 0%, var(--violet) 100%);
    --gradient-text: linear-gradient(135deg, var(--cyan) 0%, #64ffda 50%, var(--violet) 100%);
    --shadow-cyan: 0 0 30px rgba(0, 229, 255, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --container: 1200px;
    --header-height: 80px;
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

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

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

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

ul {
    list-style: none;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

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

/* --- Section Common --- */
.section__subtitle {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--cyan);
    margin-bottom: 12px;
}

.section__title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 60px;
    line-height: 1.3;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 229, 255, 0.5);
}

.btn--outline {
    background: transparent;
    color: var(--cyan);
    border: 2px solid var(--cyan);
}

.btn--outline:hover {
    background: rgba(0, 229, 255, 0.1);
    transform: translateY(-2px);
}

.btn--large {
    padding: 18px 42px;
    font-size: 1.05rem;
}

/* ========================================
   HEADER / NAV
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    background: transparent;
}

.header.scrolled {
    background: rgba(6, 10, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    z-index: 1001;
}

.nav__logo img {
    border-radius: 8px;
}

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

.nav__link {
    padding: 8px 18px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 50px;
    transition: var(--transition);
}

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

.nav__cta {
    background: var(--gradient);
    color: #fff !important;
    padding: 10px 24px;
}

.nav__cta:hover {
    box-shadow: 0 4px 20px rgba(0, 229, 255, 0.4);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

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

/* ========================================
   HERO
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--header-height);
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 229, 255, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(124, 77, 255, 0.06) 0%, transparent 60%),
        var(--bg-primary);
}

.hero__particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 2;
}

.hero__subtitle {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--cyan);
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.2s;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.4s;
}

.hero__description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 520px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.6s;
}

.hero__buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.8s;
}

.hero__image {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeIn 1.2s ease forwards 0.6s;
}

.hero__logo-container {
    position: relative;
    width: 350px;
    height: 350px;
}

.hero__logo-container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    position: relative;
    z-index: 2;
    animation: float 6s ease-in-out infinite;
    filter: drop-shadow(0 0 30px rgba(0, 229, 255, 0.3));
}

.hero__logo-glow {
    position: absolute;
    inset: -20%;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse-glow 4s ease-in-out infinite;
}

.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero__scroll a {
    display: block;
    width: 28px;
    height: 44px;
    border-radius: 14px;
    border: 2px solid var(--cyan);
    position: relative;
}

.hero__scroll span {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--cyan);
    border-radius: 2px;
    animation: scroll-indicator 2s ease-in-out infinite;
}

/* ========================================
   SERVICES
   ======================================== */
.services {
    padding: 120px 0;
    background: var(--bg-secondary);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}

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

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-cyan);
    background: var(--bg-card-hover);
}

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

.service-card__icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(124, 77, 255, 0.1));
    border-radius: 16px;
    color: var(--cyan);
    transition: var(--transition);
}

.service-card:hover .service-card__icon {
    background: var(--gradient);
    color: #fff;
    transform: scale(1.05);
}

.service-card__title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

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

/* ========================================
   PORTFOLIO
   ======================================== */
.portfolio {
    padding: 120px 0;
    background: var(--bg-primary);
}

.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

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

.portfolio-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-cyan);
}

.portfolio-card__image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.portfolio-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-card:hover .portfolio-card__image img {
    transform: scale(1.08);
}

.portfolio-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(6, 10, 26, 0.9) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-card:hover .portfolio-card__overlay {
    opacity: 1;
}

.portfolio-card__tag {
    padding: 6px 16px;
    background: var(--gradient);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
}

.portfolio-card__content {
    padding: 24px;
}

.portfolio-card__content h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.portfolio-card__content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   ABOUT
   ======================================== */
.about {
    padding: 120px 0;
    background: var(--bg-secondary);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--violet), transparent);
}

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

.about__description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
    line-height: 1.8;
}

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

.stat {
    text-align: center;
    padding: 24px 16px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.stat__number {
    font-family: var(--font-heading);
    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-family: var(--font-heading);
    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: 0.82rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

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

.feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}

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

.feature__icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(124, 77, 255, 0.15));
    border-radius: 10px;
    color: var(--cyan);
}

.feature h4 {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    margin-bottom: 6px;
}

.feature p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ========================================
   CONTACT CTA
   ======================================== */
.contact {
    padding: 120px 0;
    background:
        radial-gradient(ellipse at 50% 50%, rgba(0, 229, 255, 0.08) 0%, transparent 60%),
        var(--bg-primary);
    text-align: center;
}

.contact__content {
    max-width: 640px;
    margin: 0 auto;
}

.contact .section__title {
    margin-bottom: 20px;
}

.contact__text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    padding: 60px 0 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer__content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer__logo img {
    border-radius: 8px;
}

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

.footer__links h4,
.footer__contact h4 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

.footer__links a {
    font-size: 0.88rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer__links a:hover {
    color: var(--cyan);
    padding-left: 4px;
}

.footer__whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--cyan);
    transition: var(--transition);
}

.footer__whatsapp:hover {
    color: #25D366;
}

.footer__bottom {
    border-top: 1px solid var(--border);
    padding: 24px 0;
    text-align: center;
}

.footer__bottom p {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ========================================
   WHATSAPP FLOATING BUTTON
   ======================================== */
.whatsapp-float {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #25D366;
    color: #fff;
    border-radius: 50%;
    z-index: 999;
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    animation: bounce-in 1s ease forwards 1.5s;
    opacity: 0;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.6);
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}

@keyframes scroll-indicator {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 24px; }
}

@keyframes bounce-in {
    0% { opacity: 0; transform: scale(0.3); }
    50% { transform: scale(1.1); }
    100% { opacity: 1; transform: scale(1); }
}

/* Reveal on scroll */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

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

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

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

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

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 40px 40px;
        gap: 4px;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-left: 1px solid var(--border);
    }

    .nav__menu.open {
        right: 0;
    }

    .nav__link {
        font-size: 1rem;
        padding: 12px 0;
        width: 100%;
    }

    .nav__cta {
        margin-top: 16px;
        text-align: center;
        width: 100%;
        justify-content: center;
        display: flex;
    }

    .nav__toggle {
        display: flex;
    }

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

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

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

    .hero__content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
        padding-top: 20px;
    }

    .hero__description {
        margin: 0 auto 32px;
    }

    .hero__buttons {
        justify-content: center;
    }

    .hero__logo-container {
        width: 250px;
        height: 250px;
    }

    .hero__image {
        order: -1;
    }

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

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

    .about__stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .stat__number {
        font-size: 1.8rem;
    }

    .footer__content {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .hero__scroll {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 1.6rem;
    }

    .section__title {
        font-size: 1.5rem;
    }

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

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

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