/* ============================================
   DESIGN SYSTEM: CARBON BLADE
   Brutalismo Tipográfico Minimalista
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Sora:wght@300;400;500;600;700&display=swap');

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

/* === DESIGN TOKENS === */
:root {
    --bg-primary: #000000;
    --bg-surface: #111111;
    --bg-elevated: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --text-muted: #555555;
    --accent: #00ff88;
    --accent-dim: rgba(0, 255, 136, 0.15);
    --accent-glow: rgba(0, 255, 136, 0.4);
    --border: #222222;
    --border-hover: #333333;
    --font-display: 'Space Mono', 'Courier New', monospace;
    --font-body: 'Sora', -apple-system, sans-serif;
    --radius: 0px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.light-mode {
    --bg-primary: #f5f5f0;
    --bg-surface: #ffffff;
    --bg-elevated: #e8e8e3;
    --text-primary: #111111;
    --text-secondary: #555555;
    --text-muted: #999999;
    --accent: #00995c;
    --accent-dim: rgba(0, 153, 92, 0.1);
    --accent-glow: rgba(0, 153, 92, 0.3);
    --border: #d4d4d4;
    --border-hover: #bbbbbb;
}

/* === BASE === */
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

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

a:hover {
    opacity: 0.8;
}

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

/* === NAVIGATION === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

body.light-mode .nav {
    background: rgba(245, 245, 240, 0.85);
}

.nav__logo {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.02em;
}

.nav__links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav__links a {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: color var(--transition);
}

.nav__links a:hover,
.nav__links a.active {
    color: var(--accent);
    opacity: 1;
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    transition: all var(--transition);
}

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

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

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition);
}

/* === HERO === */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 64px 80px;
    position: relative;
}

.hero__status {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 32px;
}

.hero__status-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow); }
    50% { opacity: 0.6; box-shadow: 0 0 0 12px transparent; }
}

.hero__name {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 700;
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
}

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

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 32px;
}

.hero__description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 520px;
    line-height: 1.7;
    margin-bottom: 48px;
}

.hero__cta {
    display: flex;
    gap: 16px;
}

.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 64px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.hero__scroll span {
    font-family: var(--font-display);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--text-muted);
    writing-mode: vertical-lr;
}

.hero__scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--accent), transparent);
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    opacity: 1;
}

.btn--primary {
    background: var(--accent);
    color: #000000;
    border-color: var(--accent);
}

.btn--primary:hover {
    background: transparent;
    color: var(--accent);
}

/* === SECTIONS === */
.section {
    padding: 120px 64px;
    border-top: 1px solid var(--border);
}

.section__label {
    font-family: var(--font-display);
    font-size: 0.7rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin-bottom: 16px;
}

.section__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 48px;
    line-height: 1.1;
}

/* === ABOUT === */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about__text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about__image {
    border: 1px solid var(--border);
    overflow: hidden;
}

.about__image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    filter: grayscale(30%);
    transition: filter var(--transition);
}

.about__image:hover img {
    filter: grayscale(0%);
}

.about__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 24px;
}

/* === SKILLS === */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.skill-card {
    background: var(--bg-primary);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition);
}

.skill-card:hover {
    background: var(--accent-dim);
}

.skill-card__icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.skill-card__name {
    font-family: var(--font-display);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
}

.skill-card:hover .skill-card__name {
    color: var(--accent);
}

/* === PROJECTS === */
.projects__search {
    margin-bottom: 48px;
    max-width: 400px;
}

.projects__search input {
    width: 100%;
    padding: 14px 20px;
    font-family: var(--font-display);
    font-size: 0.8rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-primary);
    letter-spacing: 0.05em;
    transition: border-color var(--transition);
    outline: none;
}

.projects__search input::placeholder {
    color: var(--text-muted);
}

.projects__search input:focus {
    border-color: var(--accent);
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 5px;
}

.project-card {
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
    border: 1px solid var(--border);
}

.project-card:hover {
    background: var(--bg-surface);
}

.project-card__image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-bottom: 1px solid var(--border);
    filter: grayscale(60%);
    transition: filter var(--transition);
}

.project-card:hover .project-card__image {
    filter: grayscale(0%);
}

.project-card__body {
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card__title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.project-card__desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    flex-grow: 1;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.project-card__link {
    font-family: var(--font-display);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
}

.project-card__link:hover {
    opacity: 0.7;
}

.project-card__link svg {
    width: 14px;
    height: 14px;
}

/* === TAGS === */
.tag {
    display: inline-block;
    padding: 4px 10px;
    font-family: var(--font-display);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all var(--transition);
}

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

/* === CONTACT === */
.contact__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.contact-card {
    background: var(--bg-primary);
    padding: 40px 32px;
    transition: all var(--transition);
}

.contact-card:hover {
    background: var(--accent-dim);
}

.contact-card__icon {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.contact-card__label {
    font-family: var(--font-display);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.contact-card__value {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--text-primary);
}

.contact-card__value a {
    color: var(--text-primary);
}

.contact-card:hover .contact-card__value a {
    color: var(--accent);
}

/* === FOOTER === */
.footer {
    padding: 40px 64px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer__text {
    font-family: var(--font-display);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

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

/* === ANIMATIONS === */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* === SCROLLBAR === */
::-webkit-scrollbar {
    width: 6px;
}

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

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

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

/* === MOBILE === */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 99;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.mobile-menu a:hover {
    color: var(--accent);
}

@media (max-width: 768px) {
    .nav__links { display: none; }
    .hamburger { display: flex; }

    .hero {
        padding: 100px 24px 60px;
    }

    .hero__scroll { display: none; }

    .section {
        padding: 80px 24px;
    }

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

    .about__image {
        order: -1;
    }

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

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

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

    .footer {
        padding: 32px 24px;
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .hero__cta {
        flex-direction: column;
    }

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

/* === SELECTION === */
::selection {
    background: var(--accent);
    color: #000000;
}