/* ============================================================
   Valdez Bentiraz — portfolio (Mount Hua Sect theme)
   Warm paper, ink, plum-blossom accents, falling petals.
   ============================================================ */

:root {
  --paper: #fbf7f2;
  --ink: #17131a;
  --ink-2: #3a323c;
  --muted: #7a6e78;
  --rule: #eadce2;
  --plum: #e75480;
  --deep-plum: #8e2b5b;
  --red-qi: #c1352b;
  --gold: #c9a227;

  --font-display: "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-body: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --maxw: 72rem;
  --col: 42rem;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --step--1: 0.78rem;
  --step-0: 0.95rem;
  --step-1: 1.15rem;
  --step-2: 1.5rem;
  --step-3: 2.1rem;
  --step-4: clamp(2.6rem, 9vw, 5.4rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* scroll progress — a thin "sword-qi" line that fills as you read */
.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 60; pointer-events: none; }
.scroll-progress__fill { display: block; height: 100%; width: 100%; transform: scaleX(0); transform-origin: 0 50%; background: linear-gradient(90deg, var(--plum), var(--red-qi)); will-change: transform; }
.scroll-progress__tip { position: absolute; top: 50%; left: 0; width: 5px; height: 5px; background: var(--red-qi); transform: translate(0, -50%) rotate(45deg); will-change: transform; }

/* falling plum petals, behind everything */
.petals {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* plum branch that blooms as you scroll (wide screens) */
.plum-branch { position: fixed; right: 0.4rem; top: 12vh; height: 70vh; width: 92px; pointer-events: none; z-index: -1; opacity: 0.5; }
.plum-branch__stem { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 0.5s ease; }
.plum-branch__buds circle { opacity: 0; transition: opacity 0.4s ease; }
@media (max-width: 900px) { .plum-branch { display: none; } }

a { color: var(--ink); text-underline-offset: 0.18em; }
a:hover { color: var(--deep-plum); }

:focus-visible { outline: 2px solid var(--plum); outline-offset: 3px; border-radius: 2px; }

.skip-link { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--paper); padding: 0.5rem 0.9rem; z-index: 100; }
.skip-link:focus { left: 0.75rem; top: 0.75rem; }

/* ---------- header / nav ---------- */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 95%, transparent);
  border-bottom: 1px solid var(--rule);
}
.nav { max-width: var(--maxw); margin: 0 auto; padding: 0.7rem var(--gutter); display: flex; align-items: center; gap: 1rem; }
.nav__brand {
  font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
  letter-spacing: 0.04em; text-decoration: none; line-height: 1;
  color: var(--paper); background: var(--red-qi);
  padding: 0.3rem 0.5rem 0.34rem; border-radius: 1px;
  box-shadow: inset 0 0 0 2px var(--red-qi), inset 0 0 0 3px color-mix(in srgb, var(--paper) 62%, transparent);
}
.nav__brand:hover { background: var(--deep-plum); box-shadow: inset 0 0 0 2px var(--deep-plum), inset 0 0 0 3px color-mix(in srgb, var(--paper) 72%, transparent); }
.nav__toggle { display: none; margin-left: auto; font: inherit; font-size: var(--step--1); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); background: var(--paper); border: 1px solid var(--rule); border-radius: 1px; padding: 0.55rem 0.85rem; cursor: pointer; transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease; }
.nav__toggle:hover { color: var(--deep-plum); border-color: var(--deep-plum); }
.nav__toggle[aria-expanded="true"] { color: var(--paper); background: var(--deep-plum); border-color: var(--deep-plum); }
.nav__menu { list-style: none; display: flex; flex-wrap: wrap; gap: 0.35rem 1.1rem; margin: 0 0 0 auto; padding: 0; font-size: var(--step--1); }
.nav__menu a { text-decoration: none; color: var(--muted); }
.nav__menu a:hover { color: var(--deep-plum); }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1fr); max-width: var(--maxw); margin: 0 auto; padding: clamp(3rem, 12vh, 7rem) var(--gutter) clamp(2.5rem, 8vh, 5rem); }
.hero__portrait { position: relative; margin: 0 0 1.2rem; width: 108px; order: -1; padding: 7px; }
.hero__portrait img { display: block; width: 100%; height: auto; position: relative; z-index: 1; }
.hero__portrait-frame { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 2; pointer-events: none; overflow: visible; }
@media (min-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr) auto; align-items: center; column-gap: clamp(2rem, 5vw, 4rem); }
  .hero__portrait { width: clamp(170px, 18vw, 230px); order: 0; margin-bottom: 0; }
}
.hero__eyebrow, .section__eyebrow { font-size: var(--step--1); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0 0 1rem; }
.bloom { color: var(--plum); margin-right: 0.5ch; font-family: var(--font-body); }
.hero__name { font-family: var(--font-display); font-weight: 700; font-size: var(--step-4); line-height: 0.98; letter-spacing: 0.01em; margin: 0 0 1rem; }
.hero__title { font-size: var(--step-2); margin: 0 0 1.1rem; color: var(--deep-plum); }
.hero__brush { display: block; width: clamp(7rem, 15vw, 13rem); height: 0.7rem; margin: 0.1rem 0 1.1rem; fill: var(--red-qi); opacity: 0.5; }
.hero__status { font-size: var(--step--1); letter-spacing: 0.05em; color: var(--muted); margin: 0 0 1.6rem; }
.hero__lede { max-width: var(--col); color: var(--ink-2); margin: 0 0 1.8rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 0; }

.btn { display: inline-block; font-size: var(--step--1); letter-spacing: 0.04em; text-decoration: none; color: var(--ink); border: 1px solid var(--ink); padding: 0.5rem 0.9rem; transition: background 0.15s ease, color 0.15s ease; }
.btn:hover { background: var(--deep-plum); border-color: var(--deep-plum); color: var(--paper); }
.btn--ghost { border-color: var(--ink); color: var(--ink); }
.btn--ghost:hover { background: var(--deep-plum); border-color: var(--deep-plum); color: var(--paper); }

/* ---------- sections ---------- */
.section { position: relative; max-width: var(--maxw); margin: 0 auto; padding: clamp(2.4rem, 7vh, 4.5rem) var(--gutter); }
.section::before { content: ""; position: absolute; top: 0; left: var(--gutter); right: var(--gutter); height: 6px; background: url("brush-divider.svg") no-repeat; background-size: 100% 100%; opacity: 0.5; pointer-events: none; }
.section__rail { margin: 0 0 1.6rem; }
.section__hanzi { display: inline-block; font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; line-height: 1; color: var(--red-qi); }
.section__body { min-width: 0; }
.section__title { font-family: var(--font-display); font-weight: 700; font-size: var(--step-3); margin: 0; letter-spacing: 0.01em; }

/* vertical ink-scroll rail on wide screens */
@media (min-width: 900px) {
  .section {
    display: grid;
    grid-template-columns: minmax(0, 12rem) minmax(0, 1fr);
    column-gap: clamp(1.5rem, 4vw, 4rem);
    align-items: start;
  }
  .section__rail {
    grid-column: 1;
    align-self: start;
    position: sticky;
    top: 5.25rem;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.1rem;
  }
  .section__body { grid-column: 2; }
  .section__title {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    max-height: min(58vh, 19rem);
    letter-spacing: 0.08em;
  }
}
.prose { max-width: var(--col); }
.prose p { margin: 0 0 1rem; color: var(--ink-2); }

/* ---------- skills ---------- */
.skills { margin: 0; max-width: var(--col); }
.skills__row { display: grid; grid-template-columns: 12rem 1fr; gap: 0.4rem 1.5rem; padding: 0.85rem 0; border-top: 1px solid var(--rule); }
.skills__row:first-child { border-top: none; }
.skills dt { font-weight: 600; font-size: var(--step--1); letter-spacing: 0.03em; color: var(--deep-plum); }
.skills dd { margin: 0; color: var(--ink-2); font-size: var(--step-0); }

/* ---------- experience ---------- */
.group-title { font-family: var(--font-display); font-size: var(--step-1); margin: 2.2rem 0 0.8rem; letter-spacing: 0.04em; color: var(--deep-plum); }
.group-title:first-of-type { margin-top: 0; }
.timeline { list-style: none; margin: 0; padding: 0 0 0 1.5rem; max-width: var(--col); position: relative; }
.timeline::before { content: ""; position: absolute; left: 0.22rem; top: 0.6rem; bottom: 0.6rem; width: 1px; background: var(--rule); }
.entry { position: relative; padding: 1.3rem 0; }
.entry::before { content: ""; position: absolute; left: -1.5rem; top: 1.5rem; width: 7px; height: 7px; border-radius: 50%; background: var(--paper); box-shadow: 0 0 0 1px var(--deep-plum); }
.timeline .entry:first-child { padding-top: 0.2rem; }
.timeline .entry:first-child::before { top: 0.45rem; }
.entry__role { font-size: var(--step-1); margin: 0 0 0.15rem; font-weight: 600; }
.entry__meta { margin: 0 0 0.7rem; color: var(--muted); font-size: var(--step--1); }
.entry__points { margin: 0; padding-left: 1.1rem; color: var(--ink-2); }
.entry__points li { margin: 0.3rem 0; }

/* ---------- projects ---------- */
.section__hint { color: var(--muted); font-size: var(--step--1); margin: -0.6rem 0 1.8rem; }
.cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.card { position: relative; background: var(--paper); padding: 1.3rem 1.4rem; display: flex; flex-direction: column; cursor: pointer; transition: background 0.15s ease; }
.card::after { content: "❀"; position: absolute; top: 0.7rem; right: 0.7rem; font-size: 0.85rem; line-height: 1; color: var(--plum); opacity: 0; transform: scale(0.85); transition: opacity 0.18s ease, transform 0.18s ease; }
.card:hover, .card:focus-visible { background: #fdf4f7; }
.card:hover::after, .card:focus-visible::after { opacity: 0.75; transform: none; }
.card:focus-visible { outline: 2px solid var(--plum); outline-offset: -2px; }
.card__title { font-size: var(--step-1); margin: 0 0 0.5rem; padding-right: 1.1rem; }
.card__desc { margin: 0 0 0.9rem; color: var(--ink-2); font-size: var(--step-0); }
.card__tags { margin: auto 0 0; font-size: var(--step--1); color: var(--muted); letter-spacing: 0.04em; }
.card__more { position: relative; margin-top: 0.7rem; font-size: var(--step--1); color: var(--deep-plum); letter-spacing: 0.04em; }
.card__more::after { content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0; background: var(--red-qi); transition: width 0.2s ease; }
.card:hover .card__more::after, .card:focus-visible .card__more::after { width: 100%; }

/* ---------- publications ---------- */
.pub { max-width: var(--col); }
.pub__title { font-size: var(--step-1); margin: 0 0 0.6rem; }
.pub__body { margin: 0; color: var(--ink-2); }

/* ---------- list ---------- */
.list { list-style: none; margin: 0; padding: 0; max-width: var(--col); }
.list li { padding: 0.7rem 0; border-top: 1px solid var(--rule); color: var(--ink-2); }
.list li:first-child { border-top: none; }
.list strong { color: var(--ink); font-weight: 600; }

/* ---------- certificate gallery ---------- */
.certs { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.certs li { display: flex; }
.cert { display: flex; flex-direction: column; gap: 0.2rem; text-align: left; width: 100%; font: inherit; color: var(--ink); background: var(--paper); border: 0; padding: 1rem 1.15rem; cursor: pointer; transition: background 0.15s ease; }
.cert:hover, .cert:focus-visible { background: #fdf4f7; }
.cert:focus-visible { outline: 2px solid var(--plum); outline-offset: -2px; }
.cert__year { font-size: var(--step--1); letter-spacing: 0.04em; color: var(--muted); }
.cert__title { font-weight: 600; line-height: 1.35; }
.cert__issuer { font-size: var(--step--1); color: var(--deep-plum); }
.cert__more { margin-top: auto; padding-top: 0.5rem; font-size: var(--step--1); color: var(--deep-plum); }
.cert-modal__img { margin-top: 0.5rem; border: 1px solid var(--rule); background: #fff; min-height: 220px; }
.cert-modal__img img { display: block; width: 100%; height: auto; transition: opacity 0.18s ease; }
.cert-modal .modal__title { padding-right: 4.5rem; }

/* ---------- contact ---------- */
.contact { list-style: none; margin: 0.5rem 0 0; padding: 0; }
.contact li { padding: 0.45rem 0; }
.contact__label { display: inline-block; min-width: 6rem; color: var(--muted); font-size: var(--step--1); letter-spacing: 0.06em; text-transform: uppercase; }

/* ---------- footer / diorama ---------- */
.site-foot { border-top: 1px solid var(--rule); margin-top: 2rem; padding: clamp(2rem, 6vh, 3.5rem) var(--gutter) 2.5rem; max-width: var(--maxw); margin-inline: auto; }
.diorama { border: 1px solid var(--rule); background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(142,43,91,0.03) 3px 4px), var(--paper); padding: 0.6rem; }
.diorama canvas { display: block; width: 100%; height: auto; image-rendering: auto; }
.foot-meta { margin: 1rem 0 0; color: var(--muted); font-size: var(--step--1); }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- modal ---------- */
.modal { border: 1px solid var(--deep-plum); padding: 0; max-width: 44rem; width: calc(100% - 2rem); max-height: 90vh; overflow: auto; background: var(--paper); color: var(--ink); }
.modal::backdrop { background: rgba(23, 19, 26, 0.55); }
@keyframes slash-in { from { clip-path: inset(0 100% 0 0); opacity: 0.5; } to { clip-path: inset(0 0 0 0); opacity: 1; } }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.modal[open] .modal__inner { animation: slash-in 0.34s ease-out both; }
.modal[open]::backdrop { animation: fade-in 0.3s ease-out both; }
.modal__inner { padding: 1.4rem 1.5rem 1.8rem; position: relative; }
.modal__close { position: absolute; top: 0.8rem; right: 0.8rem; font: inherit; font-size: var(--step--1); background: none; border: 1px solid var(--rule); padding: 0.3rem 0.6rem; cursor: pointer; }
.modal__close:hover { border-color: var(--deep-plum); color: var(--deep-plum); }
.modal__kind { margin: 0 0 0.3rem; font-size: var(--step--1); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.modal__title { font-family: var(--font-display); font-size: var(--step-2); margin: 0 0 1rem; padding-right: 4.5rem; }
.modal__preview { margin: 0 0 1.1rem; }
.modal__summary { color: var(--ink-2); margin: 0 0 1rem; }
.modal__features { margin: 0 0 1rem; padding-left: 1.1rem; color: var(--ink-2); }
.modal__features li { margin: 0.25rem 0; }
.modal__stack { font-size: var(--step--1); color: var(--muted); margin: 0 0 0.4rem; }
.modal__links { font-size: var(--step--1); margin: 0; }

/* ---------- interface preview mockups ---------- */
.mock { border: 1px solid var(--rule); background: #fdfafc; overflow: hidden; }
.mock__bar { display: flex; align-items: center; gap: 0.35rem; padding: 0.4rem 0.6rem; background: #f6eef2; border-bottom: 1px solid var(--rule); }
.mock__bar i { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: #dcc7d1; display: inline-block; }
.mock__bar em { margin-left: 0.6rem; font-style: normal; font-size: 0.72rem; color: var(--muted); border: 1px solid var(--rule); background: #fff; padding: 0.05rem 0.5rem; border-radius: 2px; }
.mock__line { display: block; height: 0.5rem; background: #ecd7df; margin: 0.5rem 0.6rem; }
.mock__block { display: block; height: 1.6rem; background: #f0e2e8; margin: 0.4rem 0.6rem; }
.mock__block.short { width: 55%; }
.mock--web .mock__body { display: grid; grid-template-columns: 26% 1fr; min-height: 8rem; }
.mock--web .mock__side { border-right: 1px solid var(--rule); padding: 0.5rem 0; background: #faf1f5; }
.mock--web .mock__side u { display: block; height: 0.5rem; background: #e6cdd7; margin: 0.5rem 0.6rem; }
.mock--web .mock__cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.4rem; padding: 0 0.6rem; }
.mock--web .mock__cards u { display: block; height: 2.4rem; background: #f0e2e8; }
.mock--mobile { width: 9rem; margin: 0 auto; border-radius: 1.1rem; border: 2px solid var(--ink); background: #fff; padding: 0.6rem 0.5rem 1rem; }
.mock__notch { width: 2.4rem; height: 0.4rem; background: var(--ink); border-radius: 1rem; margin: 0 auto 0.6rem; }
.mock__screen { border: 1px solid var(--rule); border-radius: 0.5rem; padding: 0.5rem; min-height: 8rem; }
.mock__ring { width: 3.2rem; height: 3.2rem; border: 0.35rem solid var(--plum); border-right-color: var(--rule); border-radius: 50%; margin: 0.2rem auto 0.7rem; }
.mock--mobile .mock__line { margin: 0.4rem 0; }
.mock--mobile .mock__block { margin: 0.35rem 0; }
.mock--term { background: #1a1218; border-color: #1a1218; }
.mock--term .mock__bar { background: #241a20; border-bottom-color: #33242c; }
.mock--term .mock__bar i { background: #4a3540; }
.mock--term pre { margin: 0; padding: 0.8rem 0.9rem; color: #ecdfe5; font-family: var(--font-body); font-size: 0.72rem; line-height: 1.55; white-space: pre-wrap; overflow: auto; }
.t-ok { color: #8fd6a6; }
.t-warn { color: #ff9d8a; }
.mock--ext { position: relative; min-height: 8.5rem; }
.mock__pop { position: absolute; right: 0.7rem; top: 2.1rem; width: 9rem; background: #fff; border: 1px solid var(--rule); box-shadow: 0 6px 18px rgba(142, 43, 91, 0.1); padding: 0.5rem; border-radius: 0.3rem; }
.mock__badge { position: absolute; top: -0.6rem; right: -0.6rem; background: var(--deep-plum); color: #fff; font-size: 0.65rem; padding: 0.05rem 0.4rem; border-radius: 1rem; }
.mock__pop .mock__line { margin: 0.4rem 0; }
.mock__pop .mock__block { margin: 0.3rem 0; }
.mock--desk .mock__split { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--rule); min-height: 8rem; }
.mock--desk .mock__pane { background: #fdfafc; padding: 0.4rem 0; }

/* ---------- responsive ---------- */
@media (max-width: 720px) {
  :root {
    --step--1: 0.8rem;   /* small labels          (12.8px) */
    --step-0: 1rem;      /* body / reading        (16px)   */
    --step-1: 1.1rem;    /* entry role / titles   (17.6px) */
    --step-2: 1.3rem;    /* hero title            (20.8px) */
    --step-3: 1.75rem;   /* section title         (28px)   */
  }
  .nav { flex-wrap: wrap; }
  .nav__toggle { display: inline-block; }
  .nav__menu {
    display: none;
    flex-basis: 100%;
    width: 100%;
    flex-direction: column;
    gap: 0;
    margin: 0.7rem 0 0;
    padding: 0;
    border-top: 1px solid var(--rule);
  }
  .nav__menu.is-open { display: flex; }
  .nav__menu li { border-top: 1px solid var(--rule); }
  .nav__menu li:first-child { border-top: none; }
  .nav__menu a { display: block; padding: 0.72rem 0; font-size: var(--step-0); }
  .hero { padding-top: clamp(1.8rem, 7vh, 3.5rem); padding-bottom: clamp(2rem, 6vh, 4rem); }
  .skills__row { grid-template-columns: 1fr; gap: 0.15rem; }
  .hero__name { font-size: clamp(2.4rem, 14vw, 4rem); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}