/* ===== Immersive layer for erickvaldez.com =====
   Dark "network operations" look: deep navy, cyan signal, violet accent.
   Everything here degrades gracefully: without JS the page is fully readable,
   and prefers-reduced-motion turns the motion off. */

:root {
  color-scheme: dark;
  --bg: #060a12; --bg-alt: #0a1120; --text: #e6edf8; --muted: #8d9bb8; --border: #1b2740;
  --accent: #4fd1ff; --accent-hi: #6fdcff; --on-accent: #021019; --violet: #a78bfa;
  --accent-rgb: 79, 209, 255; --violet-rgb: 167, 139, 250; --bg-rgb: 6, 10, 18; --card-rgb: 14, 22, 40;
  --accent-soft: rgba(var(--accent-rgb), 0.12);
  --glow: 0 0 24px rgba(var(--accent-rgb), 0.35);
}
html[data-palette="amber"] { --bg: #0e0b06; --bg-alt: #15100a; --text: #f5ead6; --muted: #b9a785; --border: #3a2c14; --accent: #ffb000; --accent-hi: #ffc94d; --on-accent: #1a1000; --violet: #ff6a3d; --accent-rgb: 255, 176, 0; --violet-rgb: 255, 106, 61; --bg-rgb: 14, 11, 6; --card-rgb: 26, 20, 10; }
html[data-palette="red"] { --bg: #0b0b0f; --bg-alt: #121218; --text: #f1f1f4; --muted: #a4a4b2; --border: #2c2c36; --accent: #ff3b5c; --accent-hi: #ff6b84; --on-accent: #1a0006; --violet: #c0c4cf; --accent-rgb: 255, 59, 92; --violet-rgb: 192, 196, 207; --bg-rgb: 11, 11, 15; --card-rgb: 22, 22, 29; }
html[data-palette="teal"] { --bg: #04121a; --bg-alt: #081a24; --text: #e4f2f4; --muted: #93b3ba; --border: #17394a; --accent: #2dd4bf; --accent-hi: #5eead4; --on-accent: #012019; --violet: #fbbf24; --accent-rgb: 45, 212, 191; --violet-rgb: 251, 191, 36; --bg-rgb: 4, 18, 26; --card-rgb: 10, 31, 42; }
html[data-palette="olive"] { --bg: #0d0f0a; --bg-alt: #13160f; --text: #ecefe2; --muted: #a8ae96; --border: #2e3424; --accent: #b5d46a; --accent-hi: #cbe48c; --on-accent: #141a05; --violet: #e0b45a; --accent-rgb: 181, 212, 106; --violet-rgb: 224, 180, 90; --bg-rgb: 13, 15, 10; --card-rgb: 23, 26, 18; }
html[data-palette="light"] { color-scheme: light; --bg: #f4f7fb; --bg-alt: #eaf0f7; --text: #0b1b33; --muted: #4a5b75; --border: #d5deea; --accent: #1d5fd8; --accent-hi: #3b7bea; --on-accent: #ffffff; --violet: #0d8a7e; --accent-rgb: 29, 95, 216; --violet-rgb: 13, 138, 126; --bg-rgb: 244, 247, 251; --card-rgb: 255, 255, 255; }
html[data-palette="light"] .card:hover { box-shadow: 0 16px 40px rgba(11, 27, 51, 0.12); }
html[data-palette="light"] .fx-progress { box-shadow: none; }
html, body { transition: background-color 0.35s ease, color 0.35s ease; }

/* ----- palette switcher ----- */
.pal-btn {
  position: fixed; z-index: 25; right: max(16px, calc(env(safe-area-inset-right, 0px) + 12px)); bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  display: flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 14px 8px 8px; border-radius: 999px; cursor: pointer;
  font: 600 13px/1 "Inter", system-ui, sans-serif; color: var(--text);
  background: rgba(var(--card-rgb), 0.85); border: 1px solid rgba(var(--accent-rgb), 0.35);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}
.pal-btn:focus-visible, .pal-opt:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.pal-dots { display: flex; }
.pal-dots i { width: 18px; height: 18px; border-radius: 50%; margin-left: -6px; border: 2px solid rgba(var(--card-rgb), 1); }
.pal-dots i:first-child { margin-left: 0; }
.pal-panel {
  position: fixed; z-index: 25; right: max(16px, calc(env(safe-area-inset-right, 0px) + 12px)); bottom: calc(72px + env(safe-area-inset-bottom, 0px));
  width: min(280px, calc(100vw - 32px)); padding: 12px; border-radius: 16px; display: grid; gap: 6px;
  background: rgba(var(--card-rgb), 0.94); border: 1px solid rgba(var(--accent-rgb), 0.25);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  transform-origin: bottom right; animation: palIn 0.22s cubic-bezier(.2,.8,.2,1);
}
@keyframes palIn { from { opacity: 0; transform: translateY(8px) scale(0.96); } to { opacity: 1; transform: none; } }
.pal-title { font: 600 11px/1.4 "JetBrains Mono", monospace; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); padding: 2px 6px 6px; }
.pal-opt {
  display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 8px 10px; border-radius: 10px; cursor: pointer;
  font: 500 14px/1.2 "Inter", system-ui, sans-serif; color: var(--text); background: transparent; border: 1px solid transparent; text-align: left;
}
.pal-opt:hover { background: rgba(var(--accent-rgb), 0.08); }
.pal-opt[aria-checked="true"] { border-color: rgba(var(--accent-rgb), 0.5); background: rgba(var(--accent-rgb), 0.1); }
.pal-opt small { margin-left: auto; color: var(--muted); font-size: 12px; }

html { scroll-behavior: smooth; }
body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(var(--violet-rgb), 0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(var(--accent-rgb), 0.08), transparent 60%),
    var(--bg);
  overflow-x: hidden;
}
body::before {
  /* faint grid */
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(var(--accent-rgb), 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--accent-rgb), 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 80%);
}
header, section, footer { position: relative; z-index: 1; }
nav { position: sticky; top: 0; z-index: 15; }
::selection { background: rgba(var(--accent-rgb), 0.3); }

/* ----- nav: glass ----- */
nav {
  background: rgba(var(--bg-rgb), 0.55);
  -webkit-backdrop-filter: blur(14px) saturate(140%); backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(var(--accent-rgb), 0.12);
}
nav a.link { position: relative; transition: color 0.2s; }
nav a.link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; border-radius: 2px;
  background: var(--accent); box-shadow: var(--glow); transform: scaleX(0); transform-origin: left; transition: transform 0.3s ease;
}
nav a.link:hover::after, nav a.link.active::after, nav a.link[aria-current="page"]::after { transform: scaleX(1); }
nav a.link.active { color: var(--text); }
.logo { letter-spacing: 0.02em; }
.logo span { text-shadow: var(--glow); }

/* ----- scroll progress ----- */
.fx-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 100%; z-index: 20; pointer-events: none;
  background: linear-gradient(90deg, var(--accent), var(--violet));
  transform-origin: left; transform: scaleX(0); box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.6);
}

/* ----- hero ----- */
header#top, header.page-head { overflow: hidden; }
header#top { min-height: min(86svh, 760px); display: grid; align-items: center; padding: 110px 0 90px; }
header#top .wrap, header.page-head .wrap { position: relative; z-index: 2; }
#net { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none; }
header#top::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 160px; z-index: 1; pointer-events: none;
  background: linear-gradient(to bottom, transparent, var(--bg));
}
h1 { text-shadow: 0 0 40px rgba(var(--accent-rgb), 0.15); }
.eyebrow { min-height: 1.4em; }
.eyebrow .caret { display: inline-block; width: 0.55em; height: 1em; vertical-align: -0.12em; margin-left: 2px; background: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.badge {
  background: rgba(var(--accent-rgb), 0.08); border: 1px solid rgba(var(--accent-rgb), 0.28);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.scroll-cue {
  position: absolute; left: 50%; bottom: 26px; z-index: 2; transform: translateX(-50%);
  font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.2em; color: var(--muted);
  display: grid; justify-items: center; gap: 8px; text-decoration: none;
}
.scroll-cue i { width: 1px; height: 34px; background: linear-gradient(var(--accent), transparent); animation: drip 1.8s ease-in-out infinite; }
@keyframes drip { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ----- buttons ----- */
.btn { position: relative; overflow: hidden; transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s; will-change: transform; }
.btn:hover { opacity: 1; }
.btn.primary { background: linear-gradient(135deg, var(--accent-hi), var(--accent)); color: var(--on-accent); border-color: transparent; box-shadow: 0 8px 30px rgba(var(--accent-rgb), 0.25); }
.btn.primary:hover { box-shadow: 0 10px 40px rgba(var(--accent-rgb), 0.45); }
.btn.secondary { background: rgba(var(--accent-rgb), 0.05); }
.btn::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 40%; left: -60%;
  background: linear-gradient(110deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg); transition: left 0.55s ease;
}
.btn:hover::after { left: 130%; }

/* ----- sections ----- */
section { background: transparent !important; border-top: 1px solid rgba(var(--accent-rgb), 0.08); padding: 88px 0; }
h2 { position: relative; display: inline-block; }
h2::before { text-shadow: var(--glow); }
h2[data-text]:hover::after {
  content: attr(data-text); position: absolute; left: 0; top: 0; color: var(--violet); pointer-events: none;
  clip-path: inset(0 0 55% 0); transform: translateX(-2px); animation: glitch 0.35s steps(2) 2;
}
@keyframes glitch { 0% { transform: translate(-2px, 0); clip-path: inset(0 0 60% 0); } 50% { transform: translate(2px, 1px); clip-path: inset(40% 0 20% 0); } 100% { transform: translate(0, 0); clip-path: inset(80% 0 0 0); } }

/* ----- cards: glass, spotlight, tilt ----- */
.card, section:nth-of-type(odd) .card, .quiz {
  background: linear-gradient(180deg, rgba(var(--card-rgb), 0.78), rgba(var(--card-rgb), 0.62));
  border: 1px solid rgba(var(--accent-rgb), 0.14);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  position: relative; transform-style: preserve-3d;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.25s ease;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity 0.3s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(var(--accent-rgb), 0.14), transparent 45%);
}
.card:hover::before { opacity: 1; }
.card:hover { border-color: rgba(var(--accent-rgb), 0.4); box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), 0 0 30px rgba(var(--accent-rgb), 0.08); }
a.project .play { display: inline-flex; gap: 6px; transition: gap 0.2s; }
a.project:hover .play { gap: 12px; }
.placeholder { border-color: rgba(var(--accent-rgb), 0.18); background: rgba(var(--card-rgb), 0.4); }
.tag { background: rgba(var(--accent-rgb), 0.04); border-color: rgba(var(--accent-rgb), 0.18); transition: border-color 0.2s, color 0.2s, transform 0.2s; }
.tag:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ----- reveal on scroll (only when JS is running) ----- */
.fx-ready .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s cubic-bezier(.2,.7,.2,1), transform 0.8s cubic-bezier(.2,.7,.2,1); transition-delay: var(--d, 0s); }
.fx-ready .reveal.in { opacity: 1; transform: none; }

/* ----- cursor (fine pointers only) ----- */
.fx-cursor, .fx-cursor-ring { position: fixed; left: 0; top: 0; pointer-events: none; z-index: 30; border-radius: 50%; }
.fx-cursor { width: 6px; height: 6px; margin: -3px 0 0 -3px; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.fx-cursor-ring { width: 34px; height: 34px; margin: -17px 0 0 -17px; border: 1px solid rgba(var(--accent-rgb), 0.55); transition: width 0.25s, height 0.25s, margin 0.25s, border-color 0.25s, background 0.25s; }
.fx-cursor-ring.hot { width: 58px; height: 58px; margin: -29px 0 0 -29px; border-color: var(--violet); background: rgba(var(--violet-rgb), 0.08); }
#fx-clicks { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 29; }

/* ----- page transition ----- */
.fx-wipe {
  position: fixed; inset: 0; z-index: 50; pointer-events: none; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--bg), var(--bg-alt));
  transform: translateY(100%);
}
.fx-wipe .msg { font-family: "JetBrains Mono", monospace; font-size: 14px; color: var(--accent); letter-spacing: 0.06em; opacity: 0; transition: opacity 0.2s; }
.fx-wipe .msg b { color: var(--text); font-weight: 500; }
.fx-wipe .bar { width: 160px; height: 2px; margin-top: 12px; background: rgba(var(--accent-rgb), 0.2); overflow: hidden; border-radius: 2px; }
.fx-wipe .bar span { display: block; height: 100%; width: 40%; background: var(--accent); animation: load 0.6s ease-in-out infinite; }
@keyframes load { from { transform: translateX(-100%); } to { transform: translateX(260%); } }
.fx-wipe.cover { transition: transform 0.45s cubic-bezier(.7,0,.3,1); transform: translateY(0); pointer-events: all; }
.fx-wipe.cover .msg { opacity: 1; }
.fx-wipe.enter { transform: translateY(0); }
.fx-wipe.leave { transition: transform 0.6s cubic-bezier(.7,0,.3,1); transform: translateY(-100%); }

/* ----- footer ----- */
footer { border-top: 1px solid rgba(var(--accent-rgb), 0.08); }

/* ----- port quiz tweaks for the dark theme ----- */
.quiz-options button { background: rgba(var(--accent-rgb), 0.04); transition: border-color 0.2s, transform 0.15s, background 0.2s; }
.quiz-options button:hover:not(:disabled) { transform: translateY(-2px); background: rgba(var(--accent-rgb), 0.08); }
.quiz-options button.correct { background: #157347; border-color: #3ddc97; }
.quiz-options button.wrong { background: #9c1f33; border-color: #ff4d6d; }
.quiz-port { text-shadow: var(--glow); }
.quiz-actions button { background: linear-gradient(135deg, var(--accent-hi), var(--accent)); color: var(--on-accent); border-color: transparent; }

@media (max-width: 600px) {
  header#top { min-height: auto; padding: 80px 0 90px; }
  section { padding: 68px 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fx-ready .reveal { opacity: 1; transform: none; transition: none; }
  .eyebrow .caret, .scroll-cue i { animation: none; }
  .btn::after, h2[data-text]:hover::after { display: none; }
}