/* ============================================================
   PORTAFOLIO — SERGIO BUSTOS
   Sistema de diseño "Voltaje": cian eléctrico + violeta + chispa ámbar
   Orden: 1 Tokens · 2 Base · 3 Fondo animado · 4 Preloader/UI global
          5 Navbar · 6 Botones · 7 Hero · 8 Marquee · 9 Secciones
          10 Cards · 11 Timeline · 12 Skills · 13 Proyectos/Educación
          14 Contacto/Footer · 15 Certificados · 16 Reveal · 17 Keyframes
   ============================================================ */


/* ============================================================
   1. TOKENS & TEMAS
   ============================================================ */

@property --ang {
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}

:root {
    --bg: #05060b;
    --bg2: #0a0c18;
    --text: #eef1ff;
    --text2: #8f97b8;

    --accent: #22d3ee;
    --accent2: #8b5cf6;
    --accent3: #fbbf24;
    --pink: #f472b6;
    --ok: #34d399;

    --grad: linear-gradient(120deg, var(--accent), var(--accent2) 55%, var(--pink));
    --grad-warm: linear-gradient(120deg, var(--accent3), var(--pink));

    --glass: linear-gradient(145deg, rgba(255, 255, 255, .075), rgba(255, 255, 255, .022));
    --glass-flat: rgba(255, 255, 255, .045);
    --border: rgba(255, 255, 255, .09);
    --border-strong: rgba(255, 255, 255, .18);
    --nav-bg: rgba(9, 11, 22, .62);
    --band: rgba(139, 92, 246, .055);
    --glow: rgba(34, 211, 238, .38);
    --glow2: rgba(139, 92, 246, .38);

    --shadow-sm: 0 4px 18px rgba(0, 0, 0, .35);
    --shadow-md: 0 14px 44px rgba(0, 0, 0, .45);
    --shadow-lg: 0 30px 80px rgba(0, 0, 0, .55);

    --radius: 24px;
    --radius-sm: 14px;

    --ease: cubic-bezier(.22, 1, .36, 1);
    --spring: cubic-bezier(.34, 1.56, .64, 1);
    --curtain: cubic-bezier(.77, 0, .18, 1);

    --font-head: 'Space Grotesk', 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

body.light-mode {
    --bg: #f2f5fc;
    --bg2: #e8edf8;
    --text: #0b1020;
    --text2: #55607f;

    --accent: #0891b2;
    --accent2: #7c3aed;
    --accent3: #d97706;
    --pink: #db2777;
    --ok: #059669;

    --glass: linear-gradient(145deg, rgba(255, 255, 255, .92), rgba(255, 255, 255, .6));
    --glass-flat: rgba(255, 255, 255, .7);
    --border: rgba(15, 23, 60, .09);
    --border-strong: rgba(15, 23, 60, .2);
    --nav-bg: rgba(255, 255, 255, .7);
    --band: rgba(124, 58, 237, .05);
    --glow: rgba(8, 145, 178, .3);
    --glow2: rgba(124, 58, 237, .28);

    --shadow-sm: 0 4px 18px rgba(30, 41, 90, .08);
    --shadow-md: 0 14px 44px rgba(30, 41, 90, .13);
    --shadow-lg: 0 30px 80px rgba(30, 41, 90, .2);
}


/* ============================================================
   2. RESET & BASE
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color .5s ease, color .5s ease;
}

/* Ruido sutil para dar textura */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9000;
    opacity: .7;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-head);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -.03em;
    color: var(--text);
}

p { color: var(--text); }
a { color: inherit; }
::selection { background: var(--accent2); color: #fff; }

.text-muted, .text-secondary { color: var(--text2) !important; }
.text-primary { color: var(--accent) !important; }
.mono { font-family: var(--font-mono); }
.flex-1 { flex: 1; min-width: 0; }

section, footer, .marquee { position: relative; z-index: 1; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--accent), var(--accent2));
    border-radius: 10px;
    border: 2px solid var(--bg);
}


/* ============================================================
   3. FONDO ANIMADO (inyectado por script.js)
   ============================================================ */

.bg-fx {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.bg-fx canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.aurora { position: absolute; inset: 0; transform: translateY(calc(var(--sy, 0) * -.06px)); }

.aurora i {
    position: absolute;
    width: 55vmax;
    height: 55vmax;
    border-radius: 50%;
    filter: blur(90px);
    opacity: .34;
    will-change: transform;
}
.aurora i:nth-child(1) { background: var(--accent);  top: -22%; left: -14%; animation: drift1 22s ease-in-out infinite; }
.aurora i:nth-child(2) { background: var(--accent2); top: 8%;  right: -20%; animation: drift2 28s ease-in-out infinite; }
.aurora i:nth-child(3) { background: var(--pink);    bottom: -30%; left: 22%; opacity: .2; animation: drift3 32s ease-in-out infinite; }

body.light-mode .aurora i { opacity: .2; }
body.light-mode .aurora i:nth-child(3) { opacity: .12; }

.bg-grid {
    position: absolute;
    inset: -60px 0 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 64px 64px;
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 20%, transparent 75%);
            mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 20%, transparent 75%);
    animation: gridMove 14s linear infinite;
    opacity: .8;
}

/* Foco que sigue al cursor */
.cursor-glow {
    position: fixed;
    top: 0; left: 0;
    width: 560px; height: 560px;
    margin: -280px 0 0 -280px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--glow) 0%, transparent 62%);
    opacity: .0;
    pointer-events: none;
    z-index: 1;
    transition: opacity .6s ease;
    will-change: transform;
}
.cursor-glow.on { opacity: .22; }
body.light-mode .cursor-glow.on { opacity: .28; }

.cursor-ring {
    position: fixed;
    top: 0; left: 0;
    width: 38px; height: 38px;
    margin: -19px 0 0 -19px;
    border: 1.5px solid var(--accent);
    border-radius: 50%;
    pointer-events: none;
    z-index: 5000;
    opacity: 0;
    transition: opacity .3s, width .35s var(--spring), height .35s var(--spring), margin .35s var(--spring), background .3s, border-color .3s;
    mix-blend-mode: difference;
}
.cursor-ring.on { opacity: .8; }
.cursor-ring.hover {
    width: 70px; height: 70px; margin: -35px 0 0 -35px;
    background: rgba(255, 255, 255, .12);
    border-color: #fff;
}
.cursor-dot {
    position: fixed;
    top: 0; left: 0;
    width: 7px; height: 7px;
    margin: -3.5px 0 0 -3.5px;
    border-radius: 50%;
    background: var(--accent3);
    box-shadow: 0 0 14px 3px var(--accent3);
    pointer-events: none;
    z-index: 5001;
    opacity: 0;
    transition: opacity .3s;
}
.cursor-dot.on { opacity: 1; }

/* Estela de chispas */
.spark {
    position: fixed;
    width: 6px; height: 6px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 4999;
    background: var(--accent3);
    box-shadow: 0 0 10px 2px var(--accent3);
    animation: sparkOut .8s ease-out forwards;
}


/* ============================================================
   4. PRELOADER · PROGRESO DE SCROLL
   ============================================================ */

.preloader {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.6rem;
    background: #05060b;
    color: #fff;
    animation: curtainUp .9s var(--curtain) 2.6s forwards; /* respaldo si JS falla */
}
.preloader.done { animation-delay: 0s; }
body:not(.has-preloader) .preloader { display: none; }

.preloader::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 30%, rgba(34, 211, 238, .25), transparent 40%),
        radial-gradient(circle at 70% 70%, rgba(139, 92, 246, .3), transparent 45%);
    animation: plPulse 2s ease-in-out infinite;
}

.pl-core { position: relative; display: flex; align-items: center; gap: .4rem; }
.pl-logo {
    font-family: var(--font-head);
    font-weight: 700;
    font-size: clamp(4rem, 14vw, 7rem);
    letter-spacing: -.06em;
    background: linear-gradient(120deg, #22d3ee, #8b5cf6, #f472b6, #22d3ee);
    background-size: 300% 100%;
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
    animation: gradMove 2s linear infinite, plLogo 1s var(--spring) both;
}
.pl-bolt {
    font-size: clamp(2.2rem, 7vw, 3.6rem);
    color: #fbbf24;
    filter: drop-shadow(0 0 18px #fbbf24);
    animation: boltFlash 1.1s ease-in-out infinite;
}
.pl-bar {
    position: relative;
    width: min(260px, 60vw);
    height: 3px;
    border-radius: 3px;
    background: rgba(255, 255, 255, .12);
    overflow: hidden;
}
.pl-bar span {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, #22d3ee, #8b5cf6, #f472b6);
    transform-origin: left;
    animation: plFill 1.1s var(--curtain) forwards;
}

.scroll-progress {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 3px;
    z-index: 2000;
    background: var(--grad);
    transform-origin: left;
    transform: scaleX(var(--p, 0));
    box-shadow: 0 0 14px var(--glow);
}

/* Evita transiciones intermedias mientras se captura el cambio de tema */
.switching *, .switching *::before, .switching *::after { transition: none !important; }

/* Transición circular al cambiar de tema (View Transitions API) */
::view-transition-old(root),
::view-transition-new(root) { animation: none; mix-blend-mode: normal; }
::view-transition-new(root) { z-index: 3; }
::view-transition-old(root) { z-index: 1; }


/* ============================================================
   5. NAVBAR (píldora flotante de cristal)
   ============================================================ */

.navbar {
    top: 14px;
    left: 50%;
    right: auto;
    width: min(1140px, calc(100% - 24px));
    transform: translateX(-50%);
    padding: .5rem 0;
    background: var(--nav-bg);
    -webkit-backdrop-filter: blur(22px) saturate(1.6);
            backdrop-filter: blur(22px) saturate(1.6);
    border: 1px solid var(--border);
    border-radius: 999px;
    box-shadow: var(--shadow-sm);
    transition: top .45s var(--ease), box-shadow .4s, background .4s, width .5s var(--ease), border-radius .3s;
    animation: navIn 1s var(--ease) 1.5s backwards;
}
.navbar > .container { max-width: none; padding-inline: 1.1rem; }
.navbar.scrolled { top: 8px; box-shadow: var(--shadow-md), 0 0 0 1px var(--border-strong); width: min(980px, calc(100% - 24px)); }

.navbar-brand {
    position: relative;
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -.05em;
    background: var(--grad);
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent !important;
    padding: 0 .9rem 0 .2rem;
    transition: transform .4s var(--spring), filter .3s;
}
.navbar-brand::after {
    content: '';
    position: absolute;
    right: .1rem; top: 50%;
    width: 7px; height: 7px;
    margin-top: -3px;
    border-radius: 50%;
    background: var(--accent3);
    box-shadow: 0 0 12px 2px var(--accent3);
    animation: blink 2s ease-in-out infinite;
}
.navbar-brand:hover { transform: scale(1.12) rotate(-4deg); filter: drop-shadow(0 0 10px var(--glow)); }

.nav-link {
    position: relative;
    font-size: .88rem;
    font-weight: 600;
    color: var(--text2) !important;
    padding: .5rem 1rem !important;
    border-radius: 999px;
    transition: color .3s, background .3s, transform .3s var(--spring);
}
.nav-link::after {
    content: '';
    position: absolute;
    left: 50%; bottom: 3px;
    width: 18px; height: 3px;
    border-radius: 3px;
    background: var(--grad);
    transform: translateX(-50%) scaleX(0);
    transition: transform .4s var(--spring);
}
.nav-link:hover { color: var(--text) !important; background: var(--glass-flat); transform: translateY(-2px); }
.nav-link.active { color: var(--text) !important; background: var(--glass-flat); }
.nav-link.active::after, .nav-link:hover::after { transform: translateX(-50%) scaleX(1); }

.theme-toggle {
    width: 40px; height: 40px;
    display: grid; place-items: center;
    background: var(--glass-flat);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--accent3) !important;
    cursor: pointer;
    transition: transform .5s var(--spring), background .3s, box-shadow .3s;
}
.theme-toggle:hover { transform: rotate(90deg) scale(1.12); box-shadow: 0 0 22px var(--glow); }
.theme-toggle:focus { outline: none; box-shadow: 0 0 0 3px var(--glow); }
.theme-toggle.spin .theme-icon { animation: iconSpin .7s var(--spring); }
body.light-mode .theme-toggle { color: var(--accent2) !important; }

.navbar-toggler { padding: .4rem .6rem; }
.navbar-toggler:focus { box-shadow: 0 0 0 3px var(--glow); }
.navbar-toggler-icon { filter: invert(1); }
body.light-mode .navbar-toggler-icon { filter: none; }

@media (max-width: 991.98px) {
    .navbar { border-radius: 26px; }
    .navbar-collapse { padding: .8rem 0 .4rem; }
    .nav-link::after { display: none; }
}


/* ============================================================
   6. BOTONES
   ============================================================ */

.btn {
    position: relative;
    overflow: hidden;
    font-family: var(--font-body);
    font-weight: 700;
    letter-spacing: -.01em;
    border-radius: 999px;
    padding: .7rem 1.5rem;
    border: 1px solid transparent;
    isolation: isolate;
    translate: var(--bx, 0) var(--by, 0);
    transition: translate .35s var(--ease), transform .45s var(--spring), box-shadow .4s, background-position .6s, color .3s, border-color .3s;
}
.btn-lg { padding: .95rem 2rem; font-size: 1rem; }
.btn-sm { padding: .5rem 1.1rem; font-size: .82rem; }

/* Destello que cruza el botón */
.btn::after {
    content: '';
    position: absolute;
    top: 0; left: -80%;
    width: 50%; height: 100%;
    background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .45), transparent);
    transform: skewX(-22deg);
    transition: left .7s var(--ease);
    z-index: -1;
}
.btn:hover::after { left: 140%; }

.btn-primary {
    background: linear-gradient(120deg, var(--accent), var(--accent2), var(--pink), var(--accent));
    background-size: 300% 100%;
    color: #fff !important;
    box-shadow: 0 8px 28px -6px var(--glow2), inset 0 1px 0 rgba(255, 255, 255, .3);
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background: linear-gradient(120deg, var(--accent), var(--accent2), var(--pink), var(--accent)) !important;
    background-size: 300% 100% !important;
    background-position: 100% 0 !important;
    color: #fff !important;
    transform: translateY(-4px) scale(1.04);
    box-shadow: 0 16px 38px -8px var(--glow2), 0 0 0 4px rgba(139, 92, 246, .14);
}
.btn:active { transform: translateY(-1px) scale(.97) !important; }

.btn-outline-primary {
    background: var(--glass-flat);
    color: var(--text) !important;
    border: 1px solid var(--border-strong);
    -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
}
.btn-outline-primary:hover, .btn-outline-primary:focus, .btn-outline-primary:active {
    background: var(--glass-flat) !important;
    color: var(--text) !important;
    border-color: var(--accent) !important;
    transform: translateY(-4px) scale(1.04);
    box-shadow: 0 12px 30px -8px var(--glow), inset 0 0 22px -8px var(--glow);
}

.btn-cv {
    background: var(--grad-warm);
    color: #190b00 !important;
    border: none;
    box-shadow: 0 8px 28px -6px rgba(251, 191, 36, .5), inset 0 1px 0 rgba(255, 255, 255, .5);
}
.btn-cv:hover, .btn-cv:focus {
    background: var(--grad-warm);
    color: #190b00 !important;
    transform: translateY(-4px) rotate(-1.5deg) scale(1.05);
    box-shadow: 0 18px 40px -8px rgba(251, 191, 36, .6);
}
.btn-cv i { display: inline-block; transition: transform .5s var(--spring); }
.btn-cv:hover i { transform: rotate(-14deg) scale(1.25); }

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    background: var(--glass-flat);
    border: 1px solid var(--border-strong);
    color: var(--text) !important;
    -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
}
.contact-btn i { transition: transform .5s var(--spring); }
.contact-btn:hover, .contact-btn:focus {
    background: var(--glass-flat);
    color: var(--text) !important;
    border-color: var(--accent);
    box-shadow: 0 14px 34px -10px var(--glow), inset 0 0 24px -10px var(--glow);
}
.contact-btn:hover i { transform: scale(1.35) rotate(-12deg); }

/* Ripple al hacer click (script.js) */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, .5);
    transform: scale(0);
    animation: rippleOut .7s ease-out forwards;
    pointer-events: none;
    z-index: -1;
}


/* ============================================================
   7. HERO
   ============================================================ */

.hero-section {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding: 9rem 0 5rem;
    overflow: hidden;
}
.hero-content {
    position: relative;
    z-index: 1;
    transform: translateY(calc(var(--sy, 0) * .18px));
    opacity: calc(1 - var(--sy, 0) / 900);
}

/* Entrada escalonada (deja pasar la cortina del preloader) */
.animate-fade-up {
    animation: fadeUp 1s var(--ease) backwards;
    animation-delay: var(--d, 0s);
}
body.has-preloader .animate-fade-up { animation-delay: calc(var(--d, 0s) + 1.5s); }
.delay-1 { --d: .12s; } .delay-2 { --d: .24s; } .delay-3 { --d: .36s; } .delay-4 { --d: .5s; } .delay-5 { --d: .64s; }

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: .65rem;
    font-family: var(--font-mono);
    font-size: .74rem;
    font-weight: 500;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--text);
    padding: .5rem 1.1rem .5rem .9rem;
    margin-bottom: 1.6rem;
    background: var(--glass-flat);
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
}
.hero-label::before {
    content: '';
    width: 9px; height: 9px;
    border-radius: 50%;
    background: var(--ok);
    --pc: var(--ok);
    animation: ping 1.8s ease-out infinite;
}

.hero-title {
    font-size: clamp(3.6rem, 9.4vw, 7.6rem);
    font-weight: 700;
    line-height: .92;
    letter-spacing: -.055em;
    margin-bottom: 1.2rem;
}
.hero-title .word { display: inline-block; white-space: nowrap; }
.hero-title .char {
    display: inline-block;
    cursor: default;
    animation: charIn 1s var(--spring) backwards;
    animation-delay: calc(var(--ci) * 70ms + 1.6s);
    transition: transform .4s var(--spring), text-shadow .3s;
}
.hero-title .char:hover { transform: translateY(-14px) rotate(-6deg) scale(1.12); text-shadow: 0 14px 30px var(--glow); }
.hero-title .hl .char {
    background: linear-gradient(110deg, var(--accent), var(--accent2) 40%, var(--pink) 70%, var(--accent3) 90%, var(--accent));
    background-size: 400% 100%;
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
    animation: charIn 1s var(--spring) backwards, gradMove 7s linear infinite;
    animation-delay: calc(var(--ci) * 70ms + 1.6s), calc(var(--ci) * -.5s);
}
body:not(.has-preloader) .hero-title .char { animation-delay: calc(var(--ci) * 70ms + .15s); }
body:not(.has-preloader) .hero-title .hl .char { animation-delay: calc(var(--ci) * 70ms + .15s), calc(var(--ci) * -.5s); }

.hero-roles {
    font-family: var(--font-mono);
    font-size: clamp(.95rem, 1.7vw, 1.2rem);
    font-weight: 500;
    color: var(--accent);
    min-height: 1.9em;
    margin-bottom: 1rem;
}
.role-prompt { color: var(--accent3); margin-right: .3rem; }
.role-caret {
    display: inline-block;
    width: .55em; height: 1.1em;
    margin-left: 3px;
    vertical-align: text-bottom;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent);
    animation: caret 1s steps(1) infinite;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    color: var(--text2);
    max-width: 580px;
    line-height: 1.8;
}
@media (max-width: 991.98px) { .hero-subtitle { margin-inline: auto; } }

/* Visual: núcleo + órbitas + chips */
.hero-visual {
    position: relative;
    width: min(400px, 82vw);
    aspect-ratio: 1;
    --mx: 0; --my: 0;
}
.hero-core, .float-chip {
    translate: calc(var(--mx) * var(--depth, 12) * 1px) calc(var(--my) * var(--depth, 12) * 1px);
    transition: translate .35s ease-out;
}
.hero-core { position: absolute; inset: 0; display: grid; place-items: center; --depth: 16; }

.hero-blob {
    position: relative;
    width: 56%;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    background: conic-gradient(from var(--ang), var(--accent), var(--accent2), var(--pink), var(--accent3), var(--accent));
    border-radius: 62% 38% 56% 44% / 52% 46% 54% 48%;
    animation: morph 9s ease-in-out infinite, spinAng 7s linear infinite, floatY 6s ease-in-out infinite;
    box-shadow: 0 0 80px -6px var(--glow), 0 0 140px -20px var(--glow2);
}
.hero-blob::before {
    content: '';
    position: absolute;
    inset: -14%;
    border-radius: inherit;
    background: inherit;
    filter: blur(34px);
    opacity: .55;
    z-index: -1;
    animation: plPulse 3.2s ease-in-out infinite;
}
.hero-blob::after {
    content: '';
    position: absolute;
    inset: 5px;
    border-radius: inherit;
    background: linear-gradient(145deg, rgba(255, 255, 255, .22), rgba(255, 255, 255, 0) 50%), var(--bg);
    opacity: .9;
}
.hero-blob span {
    position: relative;
    z-index: 1;
    font-family: var(--font-head);
    font-weight: 700;
    font-size: clamp(3rem, 7vw, 4.8rem);
    letter-spacing: -.06em;
    background: var(--grad);
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
}

.orbit {
    position: absolute;
    border-radius: 50%;
    animation: spin 20s linear infinite;
}
.orbit-1 { inset: 8%; border: 1.5px dashed color-mix(in srgb, var(--accent) 45%, transparent); }
.orbit-2 { inset: -5%; border: 1px solid var(--border-strong); animation-duration: 32s; animation-direction: reverse; }
.orbit-dot {
    position: absolute;
    top: -6px; left: 50%;
    width: 12px; height: 12px;
    margin-left: -6px;
    border-radius: 50%;
    background: var(--accent3);
    box-shadow: 0 0 20px 5px var(--accent3);
}
.orbit-2 .orbit-dot { background: var(--accent); box-shadow: 0 0 20px 5px var(--accent); top: auto; bottom: 14%; left: 6%; }

.float-chip {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-family: var(--font-mono);
    font-size: .76rem;
    font-weight: 500;
    white-space: nowrap;
    padding: .55rem .95rem;
    background: var(--glass);
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    -webkit-backdrop-filter: blur(14px);
            backdrop-filter: blur(14px);
    box-shadow: var(--shadow-md);
    animation: bob 5.5s ease-in-out infinite;
}
.float-chip i { color: var(--accent3); }
.chip-a { top: 6%;  left: -2%; }
.chip-b { top: 20%; right: -6%; animation-delay: -1.5s; }
.chip-c { bottom: 15%; left: -8%; animation-delay: -3s; }
.chip-d { bottom: 2%;  right: 0; animation-delay: -4.2s; border-color: color-mix(in srgb, var(--accent3) 60%, transparent); }

.scroll-hint {
    position: absolute;
    bottom: 1.6rem; left: 50%;
    width: 26px; height: 42px;
    margin-left: -13px;
    border: 2px solid var(--border-strong);
    border-radius: 20px;
    z-index: 2;
    animation: fadeUp 1s var(--ease) 2.8s backwards;
}
.scroll-hint span {
    position: absolute;
    top: 7px; left: 50%;
    width: 4px; height: 8px;
    margin-left: -2px;
    border-radius: 4px;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
    animation: wheel 1.8s ease-in-out infinite;
}
@media (max-height: 700px), (max-width: 575.98px) { .scroll-hint { display: none; } }


/* ============================================================
   8. MARQUEE DE TECNOLOGÍAS
   ============================================================ */

.marquee {
    padding: 1.4rem 0;
    overflow: hidden;
    border-block: 1px solid var(--border);
    background: linear-gradient(90deg, transparent, var(--band), transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
            mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-row { display: flex; overflow: hidden; padding: .4rem 0; }
.marquee-track { display: flex; flex-shrink: 0; width: max-content; animation: marquee 38s linear infinite; }
.marquee-row.reverse .marquee-track { animation-direction: reverse; animation-duration: 46s; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-group { display: flex; gap: 1rem; padding-right: 1rem; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    font-family: var(--font-mono);
    font-size: .88rem;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    padding: .65rem 1.3rem;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: 999px;
    transition: transform .4s var(--spring), border-color .3s, box-shadow .3s, background .3s;
}
.hero-badge::before {
    content: '';
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--grad);
    box-shadow: 0 0 10px var(--accent);
}
.hero-badge:hover {
    transform: translateY(-5px) scale(1.1) rotate(-2deg);
    border-color: var(--accent);
    box-shadow: 0 12px 28px -8px var(--glow);
}


/* ============================================================
   9. SECCIONES, TÍTULOS, ESTADÍSTICAS
   ============================================================ */

.section-bg {
    background: linear-gradient(180deg, transparent, var(--band) 18%, var(--band) 82%, transparent);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: .7rem;
    font-family: var(--font-mono);
    font-size: .76rem;
    font-weight: 500;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--accent);
}
.section-label::before {
    content: '';
    width: 30px; height: 2px;
    border-radius: 2px;
    background: var(--grad);
    box-shadow: 0 0 12px var(--accent);
}
.section-label::after {
    content: '_';
    animation: caret 1s steps(1) infinite;
}
.text-center .section-label::after { content: ''; }

.section-heading {
    font-size: clamp(2.1rem, 5vw, 3.6rem);
    letter-spacing: -.045em;
    line-height: 1.04;
}
.section-heading.text-white { color: #fff !important; }

.section-divider {
    width: 72px; height: 4px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent2), var(--pink), var(--accent));
    background-size: 300% 100%;
    box-shadow: 0 0 18px var(--glow);
    animation: gradMove 4s linear infinite;
    transition: width 1.1s var(--ease) .45s;
}

.section-intro { color: var(--text2); font-size: 1.05rem; line-height: 1.85; }
.section-intro strong { color: var(--text); }

.info-badge {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 500;
    padding: .5rem 1rem;
    border-radius: 999px;
    background: var(--glass);
    border: 1px solid var(--border);
    color: var(--text);
    transition: transform .4s var(--spring), border-color .3s, box-shadow .3s;
}
.info-badge:hover { transform: translateY(-4px) rotate(-2deg) scale(1.06); border-color: var(--accent); box-shadow: 0 10px 24px -8px var(--glow); }

.stat-card {
    position: relative;
    padding: 2.2rem 2rem;
    border-radius: var(--radius);
    background: var(--glass);
    border: 1px solid var(--border);
    overflow: hidden;
    -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
    box-shadow: var(--shadow-md);
    transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
    transition: transform .6s var(--ease), box-shadow .4s;
}
.stat-card.tilting { transition: transform .1s linear, box-shadow .4s; }
.stat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    background: conic-gradient(from var(--ang), transparent 0 62%, var(--accent) 80%, var(--pink) 94%, transparent 100%);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
    animation: spinAng 5s linear infinite;
    pointer-events: none;
}
.stat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 0%), var(--glow), transparent 55%);
    opacity: 0;
    transition: opacity .4s;
    pointer-events: none;
}
.stat-card:hover::after { opacity: .45; }
.stat-number {
    display: block;
    font-family: var(--font-head);
    font-size: clamp(3.4rem, 7vw, 5rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.06em;
    background: var(--grad);
    background-size: 200% 100%;
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
    animation: gradMove 6s linear infinite;
}
.stat-label {
    margin-top: .6rem;
    font-family: var(--font-mono);
    font-size: .8rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--text2);
}


/* ============================================================
   10. CARDS (cristal + foco + borde luminoso + tilt 3D)
   ============================================================ */

.card {
    position: relative;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    overflow: hidden;
    -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
    box-shadow: var(--shadow-sm);
}
.card h5, .card h6 { color: var(--text); }
.card p { color: var(--text2); }
.card p.exp-desc, .card .exp-bullet { color: var(--text2); }

/* Foco de luz bajo el cursor */
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), var(--glow), transparent 55%);
    opacity: 0;
    transition: opacity .5s;
    pointer-events: none;
    z-index: 0;
}
/* Borde que sigue al cursor */
.card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), var(--accent), var(--accent2) 45%, transparent 75%);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
    opacity: 0;
    transition: opacity .4s;
    pointer-events: none;
    z-index: 2;
}
.card:hover::before { opacity: .22; }
.card:hover::after { opacity: 1; }
body.light-mode .card:hover::before { opacity: .3; }
.card-body { position: relative; z-index: 1; }

.card-hover {
    transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(var(--ty, 0px));
    transition: transform .7s var(--ease), box-shadow .5s, border-color .4s;
    will-change: transform;
}
.card-hover.tilting { transition: transform .12s linear, box-shadow .5s, border-color .4s; }
.card-hover:hover { --ty: -10px; box-shadow: var(--shadow-lg), 0 0 60px -20px var(--glow); border-color: transparent; }

/* Iconos Bootstrap dentro de cards: medallón brillante */
.card .bi.fs-1 {
    display: grid;
    place-items: center;
    width: 72px; height: 72px;
    margin: 0 auto 1.1rem;
    font-size: 1.9rem !important;
    border-radius: 22px;
    color: var(--accent) !important;
    background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--accent2) 18%, transparent));
    border: 1px solid var(--border-strong);
    box-shadow: inset 0 0 22px -8px var(--glow);
    transition: transform .6s var(--spring), background .4s, color .3s, box-shadow .4s;
}
.card:hover .bi.fs-1 {
    transform: translateY(-4px) rotate(-8deg) scale(1.14);
    color: #fff !important;
    background: var(--grad);
    box-shadow: 0 14px 32px -8px var(--glow2);
}


/* ============================================================
   11. TIMELINE DE EXPERIENCIA
   ============================================================ */

.exp-timeline {
    --tp: 0;
    position: relative;
    max-width: 920px;
    margin: 0 auto;
    padding-left: 3rem;
}
.exp-timeline::before, .exp-timeline::after {
    content: '';
    position: absolute;
    left: 11px; top: 0; bottom: 0;
    width: 3px;
    border-radius: 3px;
}
.exp-timeline::before { background: var(--border-strong); }
.exp-timeline::after {
    background: linear-gradient(var(--accent), var(--accent2), var(--pink));
    transform-origin: top;
    transform: scaleY(var(--tp));
    box-shadow: 0 0 16px var(--glow);
}
.exp-item { position: relative; margin-bottom: 2rem; }
.exp-item:last-child { margin-bottom: 0; }

.exp-dot {
    position: absolute;
    left: -3rem; top: 1.9rem;
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--bg);
    border: 3px solid var(--accent);
    z-index: 2;
    transition: background .5s, transform .5s var(--spring), border-color .4s;
}
.exp-dot::after {
    content: '';
    position: absolute;
    inset: 3px;
    border-radius: 50%;
    background: var(--accent);
    transform: scale(0);
    transition: transform .6s var(--spring) .3s;
}
.exp-item.visible .exp-dot::after { transform: scale(1); }
.exp-item.visible .exp-dot { animation: ping 2.6s ease-out infinite; }
.exp-item:hover .exp-dot { transform: scale(1.35); border-color: var(--accent3); }
.exp-item:hover .exp-dot::after { background: var(--accent3); }

/* flecha que une el punto con la card */
.exp-item::before {
    content: '';
    position: absolute;
    left: -1.4rem; top: calc(1.9rem + 11px);
    width: 1.4rem; height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
    transform-origin: left;
    transform: scaleX(0);
    transition: transform .8s var(--ease) .4s;
}
.exp-item.visible::before { transform: scaleX(1); }

.exp-company {
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 500;
    color: var(--accent) !important;
    margin: .35rem 0 .7rem;
    line-height: 1.5;
}
.exp-date {
    font-family: var(--font-mono);
    font-size: .76rem;
    color: var(--text2);
}
.exp-badge {
    font-family: var(--font-mono);
    font-size: .7rem;
    font-weight: 500;
    padding: .25rem .75rem;
    border-radius: 999px;
    color: var(--accent3);
    background: color-mix(in srgb, var(--accent3) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent3) 35%, transparent);
}
.exp-badge-location {
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    border-color: color-mix(in srgb, var(--accent) 35%, transparent);
}
.exp-desc { font-size: .94rem; line-height: 1.75; margin-bottom: .6rem; }
.exp-desc strong { color: var(--text); }
.exp-bullets { display: grid; gap: .55rem; margin-top: .85rem; }
.exp-bullet {
    display: flex;
    align-items: flex-start;
    gap: .7rem;
    font-size: .88rem;
    line-height: 1.6;
    transition: transform .4s var(--ease), color .3s;
}
.exp-bullet:hover { transform: translateX(8px); }
.exp-bullet strong { color: var(--text); }
.exp-bullet-dot {
    flex-shrink: 0;
    width: 8px; height: 8px;
    margin-top: .5rem;
    border-radius: 50%;
    background: var(--grad);
    box-shadow: 0 0 10px var(--accent);
}

@media (max-width: 575.98px) {
    .exp-timeline { padding-left: 2.2rem; }
    .exp-dot { left: -2.2rem; width: 22px; height: 22px; }
    .exp-timeline::before, .exp-timeline::after { left: 9px; }
    .exp-item::before { left: -.8rem; width: .8rem; top: calc(1.9rem + 9px); }
}


/* ============================================================
   12. SKILLS: CHIPS DE TEXTO
   ============================================================ */

.skills-grid { display: flex; flex-wrap: wrap; gap: .8rem; }

.tech-chip, .skill-tag {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--text);
    background: var(--glass-flat);
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: default;
    transition: transform .45s var(--spring), background .3s, color .3s, border-color .3s, box-shadow .4s;
}

.tech-chip {
    position: relative;
    font-size: .92rem;
    padding: .65rem 1.25rem;
    animation: chipFloat 4.5s ease-in-out infinite;
    animation-delay: calc(var(--i, 0) * -.7s);
}
.tech-chip::before {
    content: '';
    width: 7px; height: 7px;
    margin-right: .65rem;
    border-radius: 50%;
    background: var(--grad);
    box-shadow: 0 0 10px var(--accent);
    transition: transform .4s var(--spring);
}
.tech-chip:hover {
    transform: translateY(-6px) scale(1.12) rotate(-3deg);
    color: #fff;
    background: var(--grad);
    border-color: transparent;
    box-shadow: 0 14px 30px -8px var(--glow2);
    animation-play-state: paused;
}
.tech-chip:hover::before { background: #fff; transform: scale(1.5); box-shadow: 0 0 12px #fff; }

/* Entrada: los chips saltan uno a uno cuando su card se revela */
.js .reveal:not(.visible) .tech-chip { opacity: 0; }
.reveal.visible .tech-chip {
    animation: chipPop .8s var(--spring) backwards, chipFloat 4.5s ease-in-out infinite;
    animation-delay: calc(var(--i, 0) * 80ms + .35s), calc(var(--i, 0) * -.7s);
}

.skill-tag {
    font-size: .74rem;
    padding: .32rem .8rem;
    color: var(--text2);
}
.skill-tag:hover {
    transform: translateY(-3px) scale(1.08);
    color: var(--text);
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    box-shadow: 0 8px 18px -6px var(--glow);
}


/* ============================================================
   13. PROYECTOS & EDUCACIÓN
   ============================================================ */

#proyectos .row { counter-reset: proj; }
.project-card .card-body::before {
    counter-increment: proj;
    content: counter(proj, decimal-leading-zero);
    position: absolute;
    top: .6rem; right: 1.2rem;
    font-family: var(--font-head);
    font-size: 4.6rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.06em;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--border-strong);
    transition: transform .7s var(--spring), -webkit-text-stroke-color .4s;
    pointer-events: none;
    z-index: -1;
}
.project-card:hover .card-body::before {
    transform: translate(-8px, 6px) scale(1.12) rotate(-4deg);
    -webkit-text-stroke-color: var(--accent);
}
.project-card h5 { font-size: 1.3rem; letter-spacing: -.03em; padding-right: 3.5rem; }
.project-type {
    align-self: flex-start;
    display: inline-block;
    font-family: var(--font-mono);
    font-size: .7rem;
    font-weight: 500;
    letter-spacing: .1em;
    text-transform: uppercase;
    padding: .25rem .8rem;
    margin-bottom: .9rem;
    border-radius: 999px;
    color: var(--accent2);
    background: color-mix(in srgb, var(--accent2) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent2) 35%, transparent);
}
body:not(.light-mode) .project-type { color: #c4b5fd; }
.project-card .small { font-family: var(--font-mono); font-size: .76rem !important; color: var(--accent) !important; opacity: .85; }
.project-card .btn { position: relative; }

#educacion .card h5, #educacion .card h6 { letter-spacing: -.02em; }
#educacion .card .small { font-family: var(--font-mono); color: var(--accent) !important; }


/* ============================================================
   14. CONTACTO & FOOTER
   ============================================================ */

.contact-section {
    position: relative;
    margin: 3rem clamp(8px, 2vw, 24px) 0;
    border-radius: 40px;
    overflow: hidden;
    background: #060814;
    color: #fff;
    isolation: isolate;
    z-index: 1;
}
.contact-section::before {
    content: '';
    position: absolute;
    inset: -50%;
    background: conic-gradient(from var(--ang), transparent 0 55%, rgba(34, 211, 238, .5), rgba(139, 92, 246, .55), rgba(244, 114, 182, .5), transparent 95%);
    filter: blur(70px);
    opacity: .6;
    animation: spinAng 14s linear infinite;
    z-index: -2;
}
.contact-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px),
        linear-gradient(180deg, rgba(6, 8, 20, .55), rgba(6, 8, 20, .85));
    background-size: 56px 56px, 56px 56px, 100% 100%;
    -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 85%);
            mask-image: radial-gradient(ellipse at center, #000 30%, transparent 85%);
    z-index: -1;
}
.contact-section .contact-btn { color: #fff !important; background: rgba(255, 255, 255, .07); border-color: rgba(255, 255, 255, .22); }
.contact-section .contact-btn:hover { color: #fff !important; background: rgba(255, 255, 255, .12); }
.contact-section .section-heading {
    background: linear-gradient(120deg, #fff 30%, #a5f3fc 60%, #f9a8d4);
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent !important;
}
.contact-section .hero-label { color: #fff; }
.contact-section .reveal { padding: 1rem 0; }

footer { padding: 2.2rem 0 2.6rem; }
footer p {
    font-family: var(--font-mono);
    font-size: .8rem;
    color: var(--text2);
    letter-spacing: .03em;
}


/* ============================================================
   15. PÁGINAS DE CERTIFICADOS
   ============================================================ */

.cert-page-bg {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    padding-top: 7rem;
}
.cert-page-bg .text-center { animation: fadeUp 1s var(--ease) .1s backwards; }
.cert-page-bg .row > div:nth-child(1) { animation: slideL 1.1s var(--ease) .25s backwards; }
.cert-page-bg .row > div:nth-child(2) { animation: slideR 1.1s var(--ease) .4s backwards; }

.cert-image-wrapper {
    position: relative;
    padding: 1.1rem;
    border-radius: var(--radius);
    background: var(--glass);
    border: 1px solid var(--border);
    overflow: hidden;
    -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
    box-shadow: var(--shadow-lg), 0 0 80px -30px var(--glow2);
    transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
    transition: transform .7s var(--ease), box-shadow .5s;
}
.cert-image-wrapper.tilting { transition: transform .12s linear, box-shadow .5s; }
.cert-image-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    background: conic-gradient(from var(--ang), transparent 0 55%, var(--accent) 78%, var(--pink) 92%, transparent);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
    animation: spinAng 5s linear infinite;
    pointer-events: none;
    z-index: 2;
}
.cert-image-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, .22), transparent 50%);
    opacity: 0;
    transition: opacity .4s;
    pointer-events: none;
    z-index: 3;
    mix-blend-mode: soft-light;
}
.cert-image-wrapper:hover::after { opacity: 1; }
.cert-image-wrapper img { transition: transform .8s var(--ease); display: block; }
.cert-image-wrapper:hover img { transform: scale(1.03); }

.cert-list { list-style: none; padding: 0; display: grid; gap: .75rem; }
.cert-list li {
    position: relative;
    padding: .8rem 1rem .8rem 3rem;
    font-size: .95rem;
    color: var(--text);
    background: var(--glass-flat);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: transform .45s var(--spring), border-color .3s, background .3s, box-shadow .4s;
    animation: slideR .9s var(--ease) backwards;
}
.cert-list li:nth-child(1) { animation-delay: .5s; }
.cert-list li:nth-child(2) { animation-delay: .6s; }
.cert-list li:nth-child(3) { animation-delay: .7s; }
.cert-list li:nth-child(4) { animation-delay: .8s; }
.cert-list li:nth-child(5) { animation-delay: .9s; }
.cert-list li:nth-child(6) { animation-delay: 1s; }
.cert-list li:nth-child(7) { animation-delay: 1.1s; }
.cert-list li:nth-child(n+8) { animation-delay: 1.2s; }
.cert-list li::before {
    content: '→';
    position: absolute;
    left: 1rem; top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent);
    transition: transform .45s var(--spring), color .3s;
}
.cert-list li:hover {
    transform: translateX(12px);
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    box-shadow: 0 10px 26px -12px var(--glow);
}
.cert-list li:hover::before { transform: translate(6px, -50%) scale(1.3); color: var(--accent3); }


/* ============================================================
   16. REVEAL AL HACER SCROLL (variantes asignadas por script.js)
   ============================================================ */

.js .reveal {
    opacity: 0;
    filter: blur(12px);
    transition: opacity 1s var(--ease), transform 1.1s var(--ease), filter 1s var(--ease);
    transition-delay: var(--rd, 0s);
    will-change: transform, opacity;
}
.js .reveal.rv-up    { transform: translateY(70px) scale(.95); }
.js .reveal.rv-left  { transform: translateX(-90px) rotate(-2.5deg); }
.js .reveal.rv-right { transform: translateX(90px) rotate(2.5deg); }
.js .reveal.rv-zoom  { transform: scale(.72) translateY(30px); }
.js .reveal.rv-flip  { transform: perspective(900px) rotateX(-40deg) translateY(50px); transform-origin: 50% 0; }
.js .reveal.visible  { opacity: 1; filter: blur(0); transform: none; }

.js .reveal:not(.visible) .section-divider { width: 0; }
.js .reveal.rv-flip.visible { transition-delay: var(--rd, 0s); }


/* ============================================================
   17. KEYFRAMES
   ============================================================ */

@keyframes fadeUp   { from { opacity: 0; transform: translateY(40px); filter: blur(10px); } }
@keyframes slideL   { from { opacity: 0; transform: translateX(-70px) rotate(-2deg); filter: blur(8px); } }
@keyframes slideR   { from { opacity: 0; transform: translateX(70px) rotate(2deg); filter: blur(8px); } }
@keyframes navIn    { from { opacity: 0; transform: translate(-50%, -80px); } }
@keyframes charIn   { from { opacity: 0; transform: translateY(80%) rotate(14deg) scale(.4); filter: blur(14px); } }
@keyframes chipPop  { from { opacity: 0; transform: scale(.3) translateY(26px) rotate(-14deg); } }
@keyframes chipFloat{ 0%, 100% { translate: 0 0; } 50% { translate: 0 -5px; } }
@keyframes gradMove { to { background-position: 400% 0; } }
@keyframes spinAng  { to { --ang: 360deg; } }
@keyframes spin     { to { transform: rotate(360deg); } }
@keyframes morph {
    0%, 100% { border-radius: 62% 38% 56% 44% / 52% 46% 54% 48%; }
    25%      { border-radius: 40% 60% 44% 56% / 60% 40% 62% 38%; }
    50%      { border-radius: 54% 46% 38% 62% / 44% 58% 42% 56%; }
    75%      { border-radius: 46% 54% 62% 38% / 56% 42% 58% 44%; }
}
@keyframes floatY   { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-16px) rotate(2deg); } }
@keyframes bob      { 0%, 100% { transform: translateY(0) rotate(-1deg); } 50% { transform: translateY(-14px) rotate(1.5deg); } }
@keyframes ping     { 0% { box-shadow: 0 0 0 0 var(--pc, var(--accent)); } 70% { box-shadow: 0 0 0 14px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
@keyframes blink    { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.7); } }
@keyframes caret    { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
@keyframes wheel    { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(16px); } }
@keyframes marquee  { to { transform: translateX(-50%); } }
@keyframes drift1   { 0%, 100% { transform: translate(0, 0) scale(1); } 50% { transform: translate(18vw, 14vh) scale(1.25); } }
@keyframes drift2   { 0%, 100% { transform: translate(0, 0) scale(1.1); } 50% { transform: translate(-22vw, 20vh) scale(.85); } }
@keyframes drift3   { 0%, 100% { transform: translate(0, 0) scale(1); } 50% { transform: translate(-14vw, -22vh) scale(1.3); } }
@keyframes gridMove { to { background-position: 0 64px, 64px 0; } }
@keyframes rippleOut{ to { transform: scale(4); opacity: 0; } }
@keyframes sparkOut { to { transform: translate(var(--sx), var(--sy2)) scale(0); opacity: 0; } }
@keyframes iconSpin { from { transform: rotate(-200deg) scale(.3); opacity: 0; } }
@keyframes curtainUp{ to { clip-path: inset(0 0 100% 0); visibility: hidden; } }
@keyframes plFill   { from { transform: scaleX(0); } }
@keyframes plLogo   { from { opacity: 0; transform: scale(.4) rotate(-12deg); filter: blur(18px); } }
@keyframes plPulse  { 0%, 100% { opacity: .55; transform: scale(1); } 50% { opacity: 1; transform: scale(1.12); } }
@keyframes boltFlash{ 0%, 100% { opacity: 1; transform: scale(1) rotate(0); } 50% { opacity: .5; transform: scale(1.25) rotate(8deg); } }


/* ============================================================
   18. ACCESIBILIDAD: movimiento reducido
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        animation-delay: 0s !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
    .js .reveal { opacity: 1; filter: none; transform: none; }
    .preloader { display: none; }
}

@media (hover: none) {
    .cursor-glow, .cursor-ring, .cursor-dot { display: none; }
}