/* ============================================
   PORTFOLIO — DESIGNER GRÁFICO
   Dark premium theme with gold accents
   ============================================ */

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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #161616;
    --bg-card-hover: #1c1c1c;
    --text-primary: #f0ece4;
    --text-secondary: #9a9590;
    --text-muted: #5a5550;
    --accent: #c9a96e;
    --accent-light: #dfc08a;
    --accent-dim: #8a7444;
    --border: #222222;
    --border-light: #2a2a2a;
    --radius: 8px;
    --radius-lg: 16px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: 0.25s ease;
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-ui: 'Space Grotesk', sans-serif;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.accent {
    color: var(--accent);
}

/* --- Section Headers --- */
.section-number {
    font-family: var(--font-ui);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 0.25rem;
}

.section-label {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 0;
    transition: var(--transition);
}

.nav.scrolled {
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border);
}

.nav__inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    font-family: var(--font-ui);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav__links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav__links a {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.nav__links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: var(--transition);
}

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

.nav__links a:hover::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
    transform-origin: center;
}

.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);
}

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

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

.hero__grain {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero__glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(201, 169, 110, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 0 2rem;
}

.hero__label {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1.5rem;
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 6vw, 5rem);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero__title--accent {
    font-style: italic;
    color: var(--accent);
}

.hero__subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-ui);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: var(--accent);
    padding: 0.85rem 2rem;
    border-radius: 100px;
    transition: var(--transition);
    letter-spacing: 0.02em;
}

.hero__cta:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(201, 169, 110, 0.25);
}

.hero__scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    z-index: 1;
}

.hero__scroll span {
    font-family: var(--font-ui);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-muted);
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.4; transform: scaleY(0.6); }
}

/* ============================================
   SOBRE
   ============================================ */
.sobre {
    padding: clamp(5rem, 10vw, 8rem) 0;
}

.sobre__grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 4rem;
}

.sobre__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 2rem;
}

.sobre__text p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.sobre__text p:last-child {
    margin-bottom: 0;
}

.sobre__skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 2rem;
}

.skill-tag {
    font-family: var(--font-ui);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    background: rgba(201, 169, 110, 0.08);
    border: 1px solid rgba(201, 169, 110, 0.15);
    padding: 0.45rem 1rem;
    border-radius: 100px;
    letter-spacing: 0.02em;
    transition: var(--transition-fast);
}

.skill-tag:hover {
    background: rgba(201, 169, 110, 0.15);
    border-color: rgba(201, 169, 110, 0.3);
}

/* ============================================
   PORTFOLIO
   ============================================ */
.portfolio {
    padding: clamp(5rem, 10vw, 8rem) 0;
    background: var(--bg-secondary);
}

.portfolio__header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 3rem;
    gap: 2rem;
}

.portfolio__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 400;
}

.portfolio__filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 3rem;
}

.filter-btn {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    background: transparent;
    border: 1px solid var(--border);
    padding: 0.5rem 1.25rem;
    border-radius: 100px;
    transition: var(--transition-fast);
    letter-spacing: 0.02em;
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.filter-btn.active {
    color: var(--bg-primary);
    background: var(--accent);
    border-color: var(--accent);
}

/* Portfolio Grid */
.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.portfolio__item {
    transition: var(--transition);
}

.portfolio__item.hidden {
    display: none;
}

.portfolio__item--featured {
    grid-column: span 2;
    grid-row: span 2;
}

.portfolio__item--wide {
    grid-column: span 2;
}

.portfolio__card {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    cursor: pointer;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.portfolio__card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.portfolio__card:hover {
    border-color: var(--border-light);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.portfolio__card:hover img {
    transform: scale(1.04);
}

.portfolio__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(10, 10, 10, 0.95) 0%,
        rgba(10, 10, 10, 0.6) 40%,
        transparent 100%
    );
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.75rem;
    opacity: 0;
    transition: var(--transition);
}

.portfolio__card:hover .portfolio__overlay {
    opacity: 1;
}

.portfolio__category {
    font-family: var(--font-ui);
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 0.4rem;
}

.portfolio__name {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: 0.3rem;
}

.portfolio__desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.portfolio__expand {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    color: var(--text-primary);
    transition: var(--transition-fast);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.portfolio__expand:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

/* ============================================
   CONTATO
   ============================================ */
.contato {
    padding: clamp(5rem, 10vw, 8rem) 0;
}

.contato__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
}

.contato__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.contato__text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.contato__details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contato__item-label {
    display: block;
    font-family: var(--font-ui);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 0.25rem;
}

.contato__item-value {
    font-size: 1rem;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.contato__item-value:hover {
    color: var(--accent);
}

/* Form */
.contato__form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group label {
    display: block;
    font-family: var(--font-ui);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.85rem 1rem;
    transition: var(--transition-fast);
    outline: none;
}

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

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.1);
}

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

.form-submit {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: var(--accent);
    padding: 0.85rem 2rem;
    border-radius: 100px;
    transition: var(--transition);
    letter-spacing: 0.02em;
    align-self: flex-start;
}

.form-submit:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(201, 169, 110, 0.25);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border);
}

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

.footer__copy {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer__top {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.footer__top:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ============================================
   LIGHTBOX
   ============================================ */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox__close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transition: var(--transition-fast);
    z-index: 10;
}

.lightbox__close:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.lightbox__content {
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox__content img {
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--radius-lg);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.lightbox.active .lightbox__content img {
    transform: scale(1);
}

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

/* ============================================
   REVEAL ANIMATIONS
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

/* Tablet */
@media (max-width: 1024px) {
    .sobre__grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .portfolio__item--featured {
        grid-column: span 2;
        grid-row: span 1;
    }

    .portfolio__item--wide {
        grid-column: span 2;
    }

    .contato__grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav__links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 0;
        border-left: 1px solid var(--border);
        transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .nav__links.open {
        right: 0;
    }

    .nav__links li {
        border-bottom: 1px solid var(--border);
    }

    .nav__links a {
        display: block;
        padding: 1.1rem 0;
        font-size: 1rem;
    }

    .nav__toggle {
        display: flex;
    }

    .portfolio__header {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .portfolio__item--featured,
    .portfolio__item--wide {
        grid-column: span 1;
    }

    .portfolio__overlay {
        opacity: 1;
    }

    .hero__title {
        font-size: clamp(2.2rem, 8vw, 3rem);
    }

    .footer__inner {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .portfolio__filters {
        gap: 0.4rem;
    }

    .filter-btn {
        font-size: 0.72rem;
        padding: 0.4rem 1rem;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}