/* ============================================================================
   CODEZ.CZ — main.css
   Tema hacker: fondo oscuro, neón verde/cian, tipografía mono.
   Sin dependencias externas. Todas las fuentes son self-hosted.
   ========================================================================== */

/* ------------------------------- Fonts ------------------------------------ */
@font-face {
    font-family: "JetBrains Mono";
    src: url("/assets/fonts/jetbrains-mono-Regular.woff2") format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: "JetBrains Mono";
    src: url("/assets/fonts/jetbrains-mono-Bold.woff2") format("woff2");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: "JetBrains Mono";
    src: url("/assets/fonts/jetbrains-mono-ExtraBold.woff2") format("woff2");
    font-weight: 800;
    font-style: normal;
    font-display: swap;
}

/* ------------------------------- Tokens ---------------------------------- */
:root {
    --bg-0:        #050505;
    --bg-1:        #0a0f0a;
    --bg-2:        #0f1410;
    --panel:       rgba(10, 20, 14, 0.72);
    --neon-green:  #00ff41;
    --neon-cyan:   #00d4ff;
    --neon-dim:    rgba(0, 255, 65, 0.45);
    --text:        #d8ffe3;
    --text-dim:    #7bb891;
    --border:      rgba(0, 255, 65, 0.22);
    --danger:      #ff2e63;
    --gutter:      clamp(1.25rem, 4vw, 3rem);
    --radius:      0.5rem;

    --font-mono:   "JetBrains Mono", ui-monospace, "Cascadia Code", "Fira Code",
                   Menlo, Consolas, monospace;

    --shadow-neon: 0 0 12px rgba(0, 255, 65, 0.35);
    --ease:        cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    background: var(--bg-0);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 1rem;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

a { color: var(--neon-cyan); text-decoration: none; }
a:hover { color: var(--neon-green); text-shadow: var(--shadow-neon); }

::selection {
    background: var(--neon-green);
    color: #050505;
}

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0);
    white-space: nowrap; border: 0;
}

.container {
    width: min(1120px, 100% - 2 * var(--gutter));
    margin-inline: auto;
}

/* ------------------------- Canvas de Matrix ------------------------------ */
#matrix {
    position: fixed;
    inset: 0;
    z-index: -2;
    width: 100%;
    height: 100%;
    opacity: 0.16;
}

/* Scanlines overlay */
.scanlines {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        repeating-linear-gradient(
            0deg,
            rgba(0, 0, 0, 0) 0px,
            rgba(0, 0, 0, 0) 2px,
            rgba(0, 0, 0, 0.22) 3px
        );
    animation: scan-move 9s linear infinite;
    mix-blend-mode: overlay;
}

/* -------------------------------- Header -------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem var(--gutter);
    background: linear-gradient(180deg, rgba(5, 5, 5, 0.94), rgba(5, 5, 5, 0.78));
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(6px);
}

.logo {
    display: inline-flex;
    align-items: baseline;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--text);
}
.logo-bracket { color: var(--neon-green); animation: glow-pulse 2.6s ease-in-out infinite; }
.logo-name { color: var(--text); }
.logo-cursor { color: var(--neon-green); animation: blink 1s steps(1) infinite; }

.main-nav {
    display: flex;
    gap: clamp(0.9rem, 2.5vw, 2rem);
}
.main-nav a {
    position: relative;
    color: var(--text-dim);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.main-nav a::after {
    content: "";
    position: absolute;
    left: 0; bottom: -0.35rem;
    width: 0; height: 2px;
    background: var(--neon-green);
    box-shadow: var(--shadow-neon);
    transition: width 0.25s var(--ease);
}
.main-nav a:hover::after { width: 100%; }

.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
}
.lang-btn {
    background: none;
    border: 1px solid transparent;
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 0.25rem 0.55rem;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.lang-btn:hover { color: var(--text); }
.lang-btn.is-active {
    color: var(--neon-green);
    border-color: var(--border);
    box-shadow: var(--shadow-neon);
}
.lang-sep { color: var(--text-dim); }

/* --------------------------------- Hero ---------------------------------- */
.hero {
    min-height: 100vh;
    display: grid;
    align-items: center;
    padding: 6.5rem var(--gutter) 3rem;
    background:
        radial-gradient(1200px 500px at 20% -5%, rgba(0, 255, 65, 0.09), transparent 60%),
        radial-gradient(900px 450px at 90% 0%, rgba(0, 212, 255, 0.08), transparent 55%);
}
.hero-inner { width: min(920px, 100%); margin-inline: auto; }

.hero-kicker {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--neon-cyan);
    font-size: 0.8rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    margin-bottom: 1.4rem;
}
.pulse-dot {
    width: 0.6rem; height: 0.6rem;
    border-radius: 50%;
    background: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green);
    animation: blink 1.4s steps(1) infinite;
}

/* Terminal */
.terminal {
    width: min(640px, 100%);
    margin-bottom: 2rem;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-neon), 0 20px 50px rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(3px);
    overflow: hidden;
}
.terminal-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.9rem;
    background: rgba(0, 0, 0, 0.45);
    border-bottom: 1px solid var(--border);
}
.terminal-title {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-dim);
}
.dot { width: 0.7rem; height: 0.7rem; border-radius: 50%; }
.dot-r { background: #ff5f56; }
.dot-y { background: #ffbd2e; }
.dot-g { background: #27c93f; }

.terminal-body {
    padding: 1rem 1.1rem;
    font-size: clamp(0.8rem, 1.6vw, 1rem);
    line-height: 1.8;
    min-height: 7.5rem;
}
.term-line { color: var(--text-dim); }
.prompt { color: var(--neon-green); font-weight: 700; }
.typed-output { color: var(--neon-cyan); text-shadow: 0 0 8px rgba(0, 212, 255, 0.5); }
.cursor-blink { animation: blink 0.9s steps(1) infinite; }

/* Hero title */
.hero-title {
    font-size: clamp(2rem, 6vw, 3.6rem);
    line-height: 1.12;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1.1rem;
}
.hero-accent { color: var(--neon-green); text-shadow: 0 0 22px var(--neon-dim); }
.neon {
    color: var(--neon-cyan);
    text-shadow: 0 0 18px rgba(0, 212, 255, 0.6);
}
.hero-sub {
    max-width: 40ch;
    color: var(--text-dim);
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    margin-bottom: 1.8rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.2rem; }

.btn {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 0.8rem 1.6rem;
    border-radius: 0.25rem;
    border: 1px solid;
    cursor: pointer;
    transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s;
}
.btn-primary {
    color: #03150a;
    background: var(--neon-green);
    border-color: var(--neon-green);
    box-shadow: 0 0 18px rgba(0, 255, 65, 0.45);
}
.btn-primary:hover {
    background: #35ff6b;
    box-shadow: 0 0 30px rgba(0, 255, 65, 0.7);
    transform: translateY(-2px);
}
.btn-ghost {
    color: var(--neon-cyan);
    border-color: rgba(0, 212, 255, 0.55);
    background: transparent;
}
.btn-ghost:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 18px rgba(0, 212, 255, 0.4);
    transform: translateY(-2px);
}
.btn-lg { padding: 1rem 2.2rem; font-size: 1rem; }

.hero-badges {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.8rem;
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.badge-dot {
    display: inline-block;
    width: 0.45rem; height: 0.45rem;
    margin-right: 0.45rem;
    background: var(--neon-green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--neon-green);
    animation: blink 2s steps(1) infinite;
}

/* ------------------------------- Sections -------------------------------- */
.section { padding: clamp(4rem, 9vw, 7rem) 0; position: relative; }
.section + .section { border-top: 1px solid var(--border); }

.section-kicker {
    color: var(--neon-green);
    font-size: 0.8rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}
.section-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 0.8rem;
}
.section-sub {
    color: var(--text-dim);
    max-width: 48ch;
    margin-bottom: 2.6rem;
}

/* ------------------------------- Services -------------------------------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.2rem;
}
.card {
    position: relative;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.6rem 1.5rem 1.7rem;
    transition: transform 0.25s var(--ease), border-color 0.25s, box-shadow 0.25s;
    overflow: hidden;
}
.card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 255, 65, 0.06), transparent 45%);
    opacity: 0;
    transition: opacity 0.25s;
}
.card:hover {
    transform: translateY(-5px);
    border-color: var(--neon-green);
    box-shadow: 0 0 22px rgba(0, 255, 65, 0.25), 0 18px 40px rgba(0, 0, 0, 0.5);
}
.card:hover::before { opacity: 1; }

.card-icon {
    font-family: var(--font-mono);
    color: var(--neon-cyan);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.3);
    width: fit-content;
    padding: 0.25rem 0.6rem;
    border-radius: 0.25rem;
    margin-bottom: 1.1rem;
    position: relative;
    z-index: 1;
}
.card-title {
    font-size: 1.05rem;
    margin-bottom: 0.55rem;
    position: relative;
    z-index: 1;
}
.card-text {
    color: var(--text-dim);
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

/* --------------------------------- Stats --------------------------------- */
.stats { text-align: center; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.2rem;
}
.stat {
    border: 1px dashed var(--border);
    padding: 1.6rem 1rem;
    background: rgba(0, 0, 0, 0.25);
}
.stat-value {
    display: block;
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 800;
    color: var(--neon-green);
    text-shadow: 0 0 16px var(--neon-dim);
    font-variant-numeric: tabular-nums;
}
.stat-label {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-dim);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* --------------------------------- About --------------------------------- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2.5rem;
    align-items: center;
}
.about-text p { margin-bottom: 1rem; color: var(--text-dim); }
.about-code {
    display: block;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-left: 3px solid var(--neon-green);
    padding: 1.4rem 1.5rem;
    font-size: 0.9rem;
    line-height: 1.9;
    box-shadow: var(--shadow-neon);
    overflow-x: auto;
}
.c-kw { color: var(--danger); }
.c-var { color: var(--neon-cyan); }
.c-k { color: var(--neon-green); }
.c-str { color: #ffd60a; }
.c-num { color: #ff9f1c; }
.c-bool { color: #00e5ff; }

/* -------------------------------- Contact -------------------------------- */
.contact-box {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    align-items: center;
    justify-content: space-between;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem clamp(1.4rem, 4vw, 2.6rem);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
}
.contact-methods { display: grid; gap: 1rem; }
.contact-item { display: flex; align-items: baseline; gap: 0.9rem; }
.contact-tag {
    color: var(--neon-cyan);
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    width: 4.5rem;
}
.contact-val { color: var(--text); font-size: 1rem; }
.contact-cta { text-align: center; }
.contact-note {
    margin-top: 0.9rem;
    color: var(--text-dim);
    font-size: 0.8rem;
}

/* -------------------------------- Footer --------------------------------- */
.site-footer {
    border-top: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.6);
    padding: 2.4rem 0 1.5rem;
}
.footer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: space-between;
    margin-bottom: 2rem;
}
.footer-logo { font-size: 1.3rem; font-weight: 800; letter-spacing: 0.08em; }
.neon-dot { color: var(--neon-green); }
.footer-slogan { color: var(--text-dim); font-size: 0.85rem; margin-top: 0.5rem; }
.footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    align-items: center;
}
.footer-nav a { color: var(--text-dim); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; }
.footer-legal {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 2rem;
    justify-content: space-between;
    border-top: 1px solid rgba(0, 255, 65, 0.12);
    padding-top: 1.2rem;
    font-size: 0.78rem;
    color: var(--text-dim);
}
.footer-hex { color: var(--neon-green); letter-spacing: 0.08em; }

/* ------------------------------ Responsive ------------------------------- */
@media (max-width: 760px) {
    .site-header { flex-wrap: wrap; }
    .main-nav { order: 3; width: 100%; justify-content: center; gap: 1.2rem; }
    .hero { padding-top: 9rem; }
    .about-grid { grid-template-columns: 1fr; }
    .contact-box { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001s !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001s !important;
        scroll-behavior: auto !important;
    }
}