/* --- VARIABLES DE COLOR: MODO NOCHE (Por defecto - Estilo Twitch) --- */
:root {
    --bg-color: #0e1113;
    --card-bg: #161b22;
    --card-bg-hover: #1c232c;
    --text-main: #e6edf3;
    --text-muted: #8b949e;
    --accent-color: #2ecc71; /* El verde de tus directos */
    --accent-hover: #27ae60;
    --accent-soft: rgba(46, 204, 113, 0.12);
    --border-color: #30363d;

    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    --max-width: 1080px;
}

/* --- VARIABLES DE COLOR: MODO DÍA --- */
[data-theme="light"] {
    --bg-color: #f0f2f5;
    --card-bg: #ffffff;
    --card-bg-hover: #f7f9fa;
    --text-main: #1f2328;
    --text-muted: #57606a;
    --accent-color: #10b981; /* Un verde esmeralda más limpio para día */
    --accent-hover: #059669;
    --accent-soft: rgba(16, 185, 129, 0.1);
    --border-color: #d0d7de;
}

/* --- RESET Y BASE --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*, *::before, *::after {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

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

h1, h2, h3 {
    font-family: var(--font-display);
}

.skip-link {
    position: absolute;
    left: -999px;
    top: auto;
    background: var(--accent-color);
    color: var(--bg-color);
    padding: 12px 20px;
    border-radius: 8px;
    z-index: 2000;
    font-weight: 600;
}

.skip-link:focus {
    left: 20px;
    top: 20px;
}

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 3px;
}

/* --- NAVEGACIÓN --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 900;
    background-color: color-mix(in srgb, var(--bg-color) 88%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.navbar {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

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

.nav-menu {
    list-style: none;
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 4px 0;
}

.nav-link:hover {
    color: var(--text-main);
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.25s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 0 auto;
    background: var(--text-main);
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --- BOTÓN MODO DÍA/NOCHE (dentro de la nav) --- */
.theme-btn {
    background-color: var(--card-bg);
    border: 2px solid var(--accent-color);
    color: var(--text-main);
    font-size: 1.05rem;
    width: 42px;
    height: 42px;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.2s ease, background-color 0.3s ease;
}

.theme-btn:hover {
    transform: scale(1.1);
    background-color: var(--accent-color);
}

/* --- HERO --- */
.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 100px 24px 80px;
}

.hero-inner {
    max-width: 760px;
}

.eyebrow {
    font-family: var(--font-mono);
    color: var(--accent-color);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

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

.hero-lead {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 620px;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.98rem;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-main);
    border-color: var(--border-color);
}

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

.hero-status {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-soft);
}

/* --- SECCIONES / PANELES --- */
.panel {
    max-width: var(--max-width);
    margin: 40px auto;
    padding: 56px 40px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.panel h2 {
    font-size: 1.9rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 18px;
}

.section-lead {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 680px;
    margin-bottom: 36px;
}

/* --- SOBRE MÍ: GRID DE TARJETAS --- */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.about-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.about-icon {
    font-size: 1.6rem;
    display: inline-block;
    margin-bottom: 12px;
}

.about-card h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.about-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin: 0;
}

/* --- HABILIDADES --- */
.skills-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.skills-group h3 {
    font-size: 1.05rem;
    margin-bottom: 16px;
    color: var(--text-main);
}

.tag-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-list li {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background-color: var(--accent-soft);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 7px 14px;
    border-radius: 999px;
}

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

.project-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 26px;
    display: flex;
    flex-direction: column;
    text-align: left;
}

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

.project-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.project-icon {
    font-size: 1.4rem;
}

.project-status {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 4px 10px;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.status-live {
    background-color: var(--accent-soft);
    color: var(--accent-color);
}

.status-upcoming {
    background-color: var(--border-color);
    color: var(--text-muted);
}

.project-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.project-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-card-upcoming {
    border-style: dashed;
}

.project-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tags li {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 6px;
}

/* --- FOOTER --- */
footer {
    background: var(--card-bg);
    color: var(--text-main);
    text-align: center;
    padding: 70px 24px 48px;
    margin-top: 60px;
    border-top: 2px solid var(--accent-color);
}

footer h2 {
    color: var(--accent-color);
    font-size: 1.9rem;
    margin-bottom: 12px;
}

footer > p {
    color: var(--text-muted);
    margin-bottom: 8px;
}

.email-contact {
    margin: 20px 0 10px;
}

.email-contact a {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 1.15rem;
    font-weight: 600;
}

.email-contact a:hover {
    text-decoration: underline;
}

/* --- BOTONES DE REDES SOCIALES --- */
.social-links {
    margin: 30px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.social-links a {
    background-color: var(--accent-soft);
    color: var(--accent-color);
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    border: 1px solid var(--accent-color);
}

.social-links a:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
    transform: translateY(-3px);
    box-shadow: 0 0 15px var(--accent-soft);
}

.copyright {
    margin-top: 40px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* =========================================================
   RESPONSIVO
   ========================================================= */

/* Tablets */
@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* Menú móvil + layout apilado */
@media (max-width: 760px) {
    .nav-toggle {
        display: flex;
        order: 3;
    }

    .navbar {
        flex-wrap: wrap;
    }

    .theme-btn {
        order: 2;
    }

    .nav-menu {
        order: 4;
        flex-basis: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav-menu.is-open {
        max-height: 300px;
        margin-top: 16px;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: 10px 0;
    }

    .hero {
        padding: 64px 20px 56px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        text-align: center;
    }

    .panel {
        padding: 40px 24px;
        margin: 24px auto;
        border-radius: 12px;
    }

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

    footer {
        padding: 56px 20px 40px;
    }
}

/* Móviles pequeños */
@media (max-width: 400px) {
    .hero-title {
        font-size: 1.9rem;
    }

    .panel h2 {
        font-size: 1.6rem;
    }

    .social-links {
        flex-direction: column;
    }
}