/* Seletor de idioma/navbar */
.lang-switch {
    display: inline-block;
    margin-left: 1rem;
    vertical-align: middle;
}

#lang-btn {
    background: none;
    border: none;
    color: var(--light-text);
    font-size: 1rem;
    cursor: pointer;
    padding: 0.2rem 0.7rem;
    border-radius: 6px;
    transition: background 0.2s;
}

#lang-btn:hover,
#lang-btn:focus {
    background: rgba(124, 58, 237, 0.08);
    outline: none;
}

.lang-flag {
    font-size: 1.1em;
    margin-right: 2px;
}

.lang-label {
    font-size: 0.95em;
    font-weight: 600;
}

/* ==========================================
   VARIABLES E RESET
   ========================================== */

:root {
    /* Palette updated to better match the logo colors (green + teal + purple accent)
       Edit these values if you prefer different tones. */
    --primary-color: #10B981;
    /* emerald/green */
    --secondary-color: #06B6D4;
    /* cyan/teal */
    --accent-color: #7C3AED;
    /* purple accent */
    --dark-bg: #071028;
    --darker-bg: #030612;
    --light-text: #EDF2F7;
    --muted-text: #94A3B8;
    --border-radius: 12px;
    --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    color: var(--light-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==========================================
   NAVIGATION
   ========================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 0.9rem 1.6rem;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
}


/* decorative overlay to mimic reference background */
.contact::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.04) 0, transparent 20%),
        linear-gradient(90deg, rgba(34, 197, 94, 0.02), rgba(99, 102, 241, 0.02));
    pointer-events: none;
}

.contact-label {
    color: var(--accent-color);
    font-weight: 700;
    text-transform: none;
    letter-spacing: 0.2px;
    font-size: 0.95rem;
}

.contact-headline {
    font-size: clamp(1.4rem, 3.5vw, 2.25rem);
    text-align: center;
    margin: 0.25rem 0 0.6rem 0;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-subtitle {
    color: var(--muted-text);
    max-width: 900px;
    text-align: center;
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.whatsapp-button--large {
    padding: 1.05rem 2rem;
    font-size: 1.02rem
}

.whatsapp-button {
    box-shadow: 0 12px 50px rgba(37, 211, 102, 0.12);
    border-radius: 999px
}

.contact-note {
    color: var(--muted-text);
    font-size: 0.9rem;
    margin-top: 1rem
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* Image logo */
.logo-img {
    display: block;
    height: 48px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--light-text);
    margin: 5px 0;
    transition: var(--transition);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero {
    min-height: 48vh !important;
    padding: 2.5rem 0 2rem 0 !important;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-top: 72px;
    /* space for fixed navbar */
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 700px;
    padding: 1rem !important;
}

.hero-title {
    font-size: clamp(1.2rem, 4vw, 2rem);
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.15rem);
    color: var(--muted-text);
    margin-bottom: 1.2rem;
    line-height: 1.5;
}

.cta-button.cta-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.cta-button {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(16, 185, 129, 0.18);
    will-change: transform, box-shadow;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    transition: left 0.3s ease;
    z-index: -1;
    will-change: left;
}

.cta-button:hover::before {
    left: 0;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 50px rgba(16, 185, 129, 0.26);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

/* Floating Orbs */
.floating-orb {
    position: absolute;
    border-radius: 50%;
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
    filter: blur(80px);
}

.orb-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
    background: radial-gradient(circle, var(--primary-color), transparent);
    animation-delay: 0s;
}

.orb-2 {
    width: 250px;
    height: 250px;
    top: 50%;
    right: 5%;
    background: radial-gradient(circle, var(--secondary-color), transparent);
    animation-delay: 3s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    bottom: 10%;
    left: 50%;
    background: radial-gradient(circle, var(--accent-color), transparent);
    animation-delay: 6s;
}

/* ==========================================
   ABOUT SECTION
   ========================================== */

.about {
    padding: 6rem 2rem;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.5), rgba(10, 14, 39, 0.8));
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.about-card {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    will-change: transform, background, border-color;
}

.about-card:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-card p {
    color: var(--muted-text);
    font-size: 0.95rem;
}

/* ==========================================
   FEATURES SECTION
   ========================================== */

.features {
    padding: 6rem 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
}

.feature-item {
    padding: 2rem;
    border-left: 4px solid var(--primary-color);
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    will-change: transform, border-left-color;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.feature-item:hover::before {
    opacity: 1;
}

.feature-item:hover {
    transform: translateX(10px);
    border-left-color: var(--accent-color);
}

.feature-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.feature-item p {
    color: var(--muted-text);
}

/* ==========================================
   CONTACT SECTION
   ========================================== */

.contact {
    padding: 6rem 2rem;
    background: linear-gradient(180deg, rgba(10, 14, 39, 0.8), rgba(15, 23, 42, 0.5));
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--border-radius);
    color: var(--light-text);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--muted-text);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
}

.submit-button {
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
}

.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.5);
}

/* WhatsApp contact button (replaces the contact form) */
.contact-cta {
    text-align: center;
    padding-top: 1rem
}

.whatsapp-button {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.9rem 1.6rem;
    background: linear-gradient(90deg, #25D366, #128C7E);
    color: #fff;
    font-weight: 700;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 8px 30px rgba(18, 140, 126, 0.18);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.whatsapp-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 40px rgba(18, 140, 126, 0.28)
}

.whatsapp-button i {
    font-size: 20px;
    color: #fff
}

.whatsapp-button span {
    display: inline-block
}

/* center contact section content */
.contact .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem
}

.contact .section-title {
    text-align: center
}


/* ==========================================
   FOOTER
   ========================================== */

.footer {
    padding: 2rem;
    text-align: center;
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--muted-text);
}

/* ==========================================
   ANIMATIONS
   ========================================== */

@keyframes gradientShift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) translateX(0px);
    }

    25% {
        transform: translateY(-30px) translateX(20px);
    }

    50% {
        transform: translateY(-60px) translateX(-20px);
    }

    75% {
        transform: translateY(-30px) translateX(30px);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: rgba(15, 23, 42, 0.95);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        gap: 0;
        backdrop-filter: blur(10px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        padding: 1rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-link::after {
        display: none;
    }

    .about-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 0 1rem;
    }

    .section-title {
        margin-bottom: 2rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0.8rem 1rem;
    }

    .logo h1 {
        font-size: 1.4rem;
    }

    .logo-img {
        height: 36px
    }

    .hero {
        margin-top: 50px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .cta-button {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .feature-number {
        font-size: 1.8rem;
    }
}

/* ==========================================
   PROJECTS / PORTFÓLIO
   ========================================== */

.projects-section {
    padding: 6rem 2rem;
}

.project-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.project-filter {
    padding: 0.35rem 0.8rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--muted-text);
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
}

.project-filter.active {
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    color: white;
    border-color: rgba(255, 255, 255, 0.08);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-thumb {
    position: relative;
    padding-top: 56.25%;
    /* 16:9 */
    background-size: cover;
    background-position: center;
}

.project-thumb .play-btn {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: transform 0.18s ease;
}

.project-thumb .play-btn:hover {
    transform: translate(-50%, -50%) scale(1.05);
}

.project-body {
    padding: 1rem 1.25rem 1.5rem 1.25rem;
}

.project-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.project-summary {
    color: var(--muted-text);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.badges {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-bottom: 0.6rem
}

.badge {
    padding: 0.25rem 0.5rem;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--muted-text)
}

.tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap
}

.tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 4px;
    color: var(--muted-text)
}

/* Modal */
.video-modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000
}

.video-modal.open {
    display: flex
}

.video-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6)
}

.video-modal__content {
    position: relative;
    width: min(1100px, 95%);
    max-height: 90vh;
    background: linear-gradient(180deg, rgba(10, 14, 39, 0.98), rgba(15, 23, 42, 0.98));
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.video-modal__close {
    position: absolute;
    right: 12px;
    top: 8px;
    z-index: 10;
    background: transparent;
    border: none;
    color: var(--light-text);
    font-size: 1.8rem;
    cursor: pointer
}

.video-modal__wrapper {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000
}

.video-modal__meta {
    padding: 1rem 1.25rem;
    color: var(--muted-text)
}

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

    .video-modal__content {
        width: 95%
    }
}