/* ==========================================================================
   Carlos Niño Padilla — OJT Portfolio
   Design system + sections
   ========================================================================== */

/* ---------- Tokens ----------
   Dark is the default; light re-maps the same tokens. The theme is driven by
   a data-theme attribute on <html>, set by a tiny inline script in the head
   (before first paint) and flipped by the header toggle in js/main.js. */
:root {
  color-scheme: dark;

  --font-display: "Sora", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;

  --ink: #e9eff9;
  --ink-soft: #a9b8cd;
  --ink-mute: #8494ab;

  --primary: #60a5fa;
  --primary-600: #93c5fd;
  --primary-700: #1e3a8a;
  --primary-soft: #14203a;
  --accent: #fbbf24;
  --accent-soft: #2a2011;

  --bg: #0b1120;
  --bg-soft: #070c17;
  --surface: #111a2e;
  --surface-2: #16203a;
  --border: #1f2b45;
  --border-strong: #2d3b5c;

  --ring: rgba(96, 165, 250, 0.22);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 30px 70px -24px rgba(0, 0, 0, 0.75);

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --maxw: 1120px;
  --nav-h: 68px;
}

[data-theme="light"] {
  color-scheme: light;

  --ink: #0f172a;
  --ink-soft: #41506b;
  --ink-mute: #64748b;

  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --primary-700: #1e3a8a;
  --primary-soft: #dbeafe;
  --accent: #b45309;
  --accent-soft: #fef3c7;

  --bg: #f6f8fc;
  --bg-soft: #edf1f8;
  --surface: #ffffff;
  --surface-2: #f1f5fb;
  --border: #dbe3ef;
  --border-strong: #c2cfe2;

  --ring: rgba(37, 99, 235, 0.18);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px -12px rgba(15, 23, 42, 0.16);
  --shadow-lg: 0 30px 70px -28px rgba(15, 23, 42, 0.25);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
  /* Safety net against a stray wide child forcing sideways scroll.
     `clip` rather than `hidden` so position:sticky keeps working. */
  overflow-x: clip;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em;
  color: var(--ink);
}

p { margin: 0 0 1em; }

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 600;
}
.skip-link:focus { left: 0; text-decoration: none; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
}

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

/* ---------- Placeholder token (TODO) ----------
   Anything wrapped in this class is temporary scaffolding.
   Search index.html for "placeholder" to find every one. */
.ph {
  background: var(--accent-soft);
  border: 1px dashed var(--accent);
  color: var(--accent);
  border-radius: var(--radius-sm);
  padding: 0 6px;
  font-weight: 600;
}
.ph::before { content: "["; }
.ph::after  { content: "]"; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.94rem;
  font-family: var(--font-body);
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease,
              background-color 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 24px -10px var(--primary);
}
.btn-primary:hover { background: var(--primary-600); box-shadow: 0 16px 30px -12px var(--primary); }
.btn-primary { color: #06101f; }

.btn-ghost {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.btn-sm { padding: 8px 15px; font-size: 0.85rem; gap: 6px; }

/* Link target not filled in yet. Swap href and drop this class when ready. */
.btn-pending { opacity: 0.55; cursor: default; box-shadow: none; }
.btn-pending:hover { transform: none; border-color: var(--border-strong); color: var(--ink); }
a.btn-pending { pointer-events: none; }

.btn svg { width: 17px; height: 17px; flex: none; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.site-header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  min-width: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: block;
  padding: 8px 13px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.18s ease, background-color 0.18s ease;
}
.nav-links a:hover { color: var(--primary); background: var(--surface-2); text-decoration: none; }
.nav-links a.active { color: var(--primary); background: var(--primary-soft); font-weight: 600; }

.nav-tools { display: flex; align-items: center; gap: 8px; flex: none; }

.icon-btn {
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink-soft);
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}
.icon-btn:hover { color: var(--primary); border-color: var(--primary); }
.icon-btn svg { width: 18px; height: 18px; }

.nav-burger { display: none; }

@media (max-width: 880px) {
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px 24px 22px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-130%);
    transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
    max-height: calc(100dvh - var(--nav-h));
    overflow-y: auto;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 13px 14px; border-radius: var(--radius-sm); font-size: 0.98rem; }
  .nav-burger { display: grid; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 0;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
  padding: 72px 0 84px;
  position: relative;
  z-index: 1;
}

.hero-copy > * { max-width: 42ch; }

.hero h1 { margin: 0 0 10px; }
.hero h1 .i-am {
  font-size: 0.94em;
  font-weight: 700;
  color: var(--ink);
  margin-right: 0.12em;
}
.hero h1 .accent {
  color: var(--primary);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 5px;
  text-underline-offset: 9px;
  text-decoration-color: color-mix(in srgb, var(--primary) 30%, transparent);
}

.hero-role {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  font-weight: 700;
  color: var(--ink);
  margin: 16px 0 14px;
  max-width: 24ch;
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  color: var(--ink-mute);
  font-size: 0.86rem;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero-meta svg { width: 15px; height: 15px; color: var(--primary); flex: none; }

/* --- Hero portrait --- */
.hero-figure {
  position: relative;
  display: grid;
  place-items: end center;
  min-height: 440px;
}

/* White picture-frame treatment: a mat of white padding around the portrait,
   with a hairline separating the photo from the frame. */
.hero-photo {
  position: relative;
  width: min(100%, 380px);
  padding: 14px;
  background: #fff;
  border: 1px solid transparent;
  border-radius: 6px;
  box-shadow: var(--shadow-lg);
}

.hero-photo img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid #d9e1eb;
  border-radius: 2px;
}

/* Short about-me paragraph in the hero. */
.hero-lede {
  font-size: 0.96rem;
  color: var(--ink-soft);
  line-height: 1.75;
  margin-bottom: 28px;
}

@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 52px 0 60px;
    gap: 40px;
  }
  .hero-copy > * { margin-inline: auto; }
  .hero-cta, .hero-meta { justify-content: center; }
  .hero-role { margin-inline: auto; }
  .hero-figure { min-height: 360px; order: -1; }
  .hero-photo { width: min(100%, 300px); }

}

/* ---------- Sections ---------- */
.section { padding: 86px 0; }
.section.alt { background: var(--bg-soft); border-block: 1px solid var(--border); }

.section-head { margin-bottom: 46px; max-width: 64ch; }
.eyebrow {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--primary);
  margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(1.75rem, 3.4vw, 2.35rem); font-weight: 800; }
.section-head p { color: var(--ink-soft); font-size: 1.02rem; margin: 0; }

/* ---------- About ---------- */
/* Single column: capped to a readable measure rather than a two-column
   split, since the "Why I want this OJT" card was removed. */
.prose { max-width: 68ch; }
.prose p { color: var(--ink-soft); }
.prose strong { color: var(--ink); }

/* ---------- Skills ---------- */
/* Simple list, no cards. Matches the CV content. */
.skills-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 56px;
  align-items: start;
}
.skills-layout .section-head {
  margin-bottom: 0;
}
.skills-info {
  order: 2;
  min-width: 0;
  margin-top: -14px;
}
.skills-side {
  margin-top: 28px;
  display: grid;
  gap: 20px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}
.side-block h3 {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
}
.side-block p {
  margin: 0;
  font-size: 0.93rem;
  color: var(--ink-soft);
}
.skills-list {
  order: 1;
  border-top: 1px solid var(--border);
  min-width: 0;
}
.skill-row {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 24px;
  align-items: baseline;
  padding: 16px 4px;
  border-bottom: 1px solid var(--border);
}
.skill-label {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--ink);
  white-space: nowrap;
}
.skill-values {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink-soft);
}
@media (max-width: 880px) {
  .skills-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .skills-layout .section-head {
    margin-bottom: 0;
  }
  .skills-info {
    order: 1;
    margin-top: 0;
  }
  .skills-list {
    order: 2;
  }
}
@media (max-width: 640px) {
  .skills-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .skill-row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 13px 2px;
  }
}
.skill-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
  gap: 20px;
}
.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.skill-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.skill-card > h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  font-family: var(--font-body);
  font-weight: 700;
  margin-bottom: 16px;
}
.skill-card > h3 svg { width: 18px; height: 18px; color: var(--primary); flex: none; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 6px 13px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}
.chip:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }

.soft-skills { margin-top: 20px; }
.soft-skills .chip { font-family: var(--font-body); }

/* ---------- Projects ---------- */
.projects { display: grid; gap: 34px; }

.project {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.project:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--border-strong); }

.project-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(10, 15, 28, 0.82);
  color: #fff;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  backdrop-filter: blur(6px);
}

.project-body { padding: 32px 34px; display: flex; flex-direction: column; }

.project-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 4px; }
.project-num {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--primary);
}
.project-body h3 { font-size: 1.42rem; font-weight: 700; margin: 0; }
.project-kind { color: var(--ink-mute); font-size: 0.88rem; font-weight: 500; }

.project-body > p { color: var(--ink-soft); font-size: 0.97rem; }

.facts { margin: 6px 0 20px; display: grid; gap: 12px; }
.fact { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 11px; font-size: 0.93rem; }
.fact svg { width: 18px; height: 18px; margin-top: 3px; color: var(--primary); flex: none; }
.fact b { font-family: var(--font-display); color: var(--ink); }
.fact span { color: var(--ink-soft); }

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 22px;
  /* Without this the chips stretch to fill the row in a featured project. */
  align-items: flex-start;
  align-content: flex-start;
}
.stack .chip { font-size: 0.79rem; padding: 5px 11px; }

.project-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; justify-content: flex-end; }

.system-note {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 13px 18px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 42%, transparent);
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin-top: -14px;
}
.system-note svg { width: 18px; height: 18px; color: var(--accent); flex: none; }

@media (max-width: 940px) {
  .project-body { padding: 26px 24px; }
}

/* ---------- Seminars ---------- */
.seminar-list { display: grid; gap: 14px; }
.seminar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.seminar:hover { transform: translateX(4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }

.seminar-date {
  text-align: center;
  background: var(--primary-soft);
  border: 1px solid color-mix(in srgb, var(--primary) 28%, transparent);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  min-width: 84px;
  flex: none;
}
.seminar-date b { display: block; font-family: var(--font-display); font-size: 1.28rem; font-weight: 800; color: var(--primary); line-height: 1.1; }
.seminar-date span { display: block; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; color: var(--primary); }

.seminar-body b { display: block; font-family: var(--font-display); font-size: 1.04rem; }
.seminar-body span { color: var(--ink-mute); font-size: 0.89rem; }

.seminar-badge {
  flex: none;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--ink-soft);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

@media (max-width: 720px) {
  .seminar { grid-template-columns: auto minmax(0, 1fr); gap: 16px; padding: 18px; }
  .seminar-badge { grid-column: 1 / -1; justify-self: start; }
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
.contact-list { display: grid; gap: 13px; margin-top: 26px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 15px 18px;
  box-shadow: var(--shadow-sm);
  color: var(--ink);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
a.contact-item:hover { transform: translateY(-2px); border-color: var(--primary); box-shadow: var(--shadow-md); text-decoration: none; }
.contact-ico {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--primary-soft);
  color: var(--primary);
  flex: none;
}
.contact-ico svg { width: 19px; height: 19px; }
.contact-item small { display: block; color: var(--ink-mute); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.07em; font-weight: 600; }
.contact-item b { font-size: 0.95rem; font-weight: 600; word-break: break-word; }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: 16px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.form-field { display: grid; gap: 7px; }
.form-field label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-mute);
}
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-soft);
  color: var(--ink);
  font: inherit;
  font-size: 0.93rem;
  resize: vertical;
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--ink-mute); }
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
}
/* Keep autofilled fields dark (browsers paint them white/yellow). */
.form-field input:-webkit-autofill,
.form-field input:-webkit-autofill:hover,
.form-field input:-webkit-autofill:focus,
.form-field input:-webkit-autofill:active,
.form-field textarea:-webkit-autofill,
.form-field textarea:-webkit-autofill:hover,
.form-field textarea:-webkit-autofill:focus,
.form-field textarea:-webkit-autofill:active {
  -webkit-text-fill-color: var(--ink);
  caret-color: var(--ink);
  -webkit-box-shadow: 0 0 0 1000px var(--bg-soft) inset;
  box-shadow: 0 0 0 1000px var(--bg-soft) inset;
  transition: background-color 9999s ease-in-out 0s;
}
/* Honeypot anti-spam field: visible to bots, never to humans. */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
/* ---------- Toast notification (bottom-left) ---------- */
.toast {
  position: fixed;
  left: 22px;
  bottom: 22px;
  z-index: 95;
  max-width: min(360px, calc(100vw - 44px));
  padding: 13px 18px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
  color: var(--ink);
  font-size: 0.88rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.toast.success {
  border-color: #4ade80;
}
.toast.error {
  border-color: #f87171;
}
.contact-form .btn[disabled] {
  opacity: 0.6;
  cursor: wait;
  transform: none;
}
.contact-form .btn {
  justify-self: center;
  color: #fff;
}
@media (max-width: 880px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
}
.site-footer p { color: var(--ink-mute); font-size: 0.9rem; margin: 0 0 6px; }
.footer-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 20px; margin-top: 16px; }
.footer-links a { color: var(--ink-soft); font-size: 0.9rem; font-weight: 500; display: inline-flex; align-items: center; gap: 7px; }
.footer-links a:hover { color: var(--primary); }
.footer-links svg { width: 17px; height: 17px; }

.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 90;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--primary-600); }
.to-top svg { width: 20px; height: 20px; }
.to-top { color: #06101f; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: none; }

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

/* ---------- Narrow phones ----------
   Kept last so it overrides the base rules above at equal specificity. Without
   this the header (nav links + tool buttons) can exceed a 320-390px viewport
   and push the whole document into horizontal scroll. */
@media (max-width: 520px) {
  .wrap { padding-inline: 18px; }
  .nav { gap: 10px; }
  .nav-cv { padding: 8px 11px; }
  .nav-cv .btn-label { display: none; }
  .hero h1 { font-size: clamp(1.9rem, 8.6vw, 2.3rem); }

  .section { padding: 62px 0; }
  .section-head { margin-bottom: 34px; }

}

/* ---------- Featured project + fanned screenshot showcase ---------- */

/* Project 01 is the flagship, so it breaks out of the two-column rhythm and
   runs the screenshots as a wide banner above its text. */
.project-featured {
  grid-template-columns: 1fr;
  position: relative;
}
/* A single column, with the four facts split into two. A fixed two-column body
   left a large dead gap once the problem/role copy got longer. */
.project-featured .facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 34px;
  margin-bottom: 22px;
  align-content: start;
}
.project-featured .facts .fact { margin: 0; }

@media (max-width: 860px) {
  .project-featured .facts { grid-template-columns: 1fr; }
}

.showcase {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.22fr 1fr;
  align-items: center;
  gap: 0;
  padding: 54px 34px 42px;
  background:
    radial-gradient(900px 340px at 50% 34%, rgba(96, 165, 250, 0.20), transparent 68%),
    linear-gradient(168deg, #0d1730, #0a1020 62%, #0b1326);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

/* Faint grid texture, like the reference backdrop */
.showcase::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.030) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.030) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(75% 70% at 50% 45%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(75% 70% at 50% 45%, #000 30%, transparent 100%);
  pointer-events: none;
}

.shot {
  position: relative;
  z-index: 1;
  margin: 0;
}
/* The fan transform lives on the frame, not the figure, so the caption stays
   upright and full size instead of inheriting the tilt and the downscale. */
.shot-frame {
  border-radius: 11px;
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  box-shadow: 0 30px 60px -26px rgba(0, 0, 0, 0.9);
  transition: transform 0.42s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.3s ease, box-shadow 0.3s ease;
}

.shot-frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* Browser window chrome */
.shot-chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 11px;
  background: #16203a;
  border-bottom: 1px solid var(--border);
}
.shot-chrome i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2d3b5c;
  flex: none;
}
.shot-chrome b {
  margin-left: 7px;
  padding: 3px 12px;
  border-radius: 999px;
  background: #0f1830;
  color: #5b6d8c;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.shot figcaption {
  margin-top: 13px;
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  color: #7e8fab;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Centre card sits forward; side cards tilt back. Transforms go on .shot-frame
   so the caption underneath stays upright and full size. */
.shot-left  .shot-frame { transform: rotate(-8.5deg) scale(0.80) translate(18px, 22px); }
.shot-right .shot-frame { transform: rotate(8.5deg) scale(0.80) translate(-18px, 22px); }
.shot-center            { z-index: 3; }
.shot-center .shot-frame { transform: scale(1.07); }
.shot-center figcaption { color: var(--primary); }

/* Overlapping the side cards is what creates the stacked look */
.showcase .shot + .shot   { margin-left: -70px; }
.showcase .shot-center    { margin-left: -40px; }



/* Hover brings a card forward and straightens it */
.shot:hover { z-index: 6; }
.shot:hover .shot-frame {
  transform: rotate(0deg) scale(1.12) translateY(-10px);
  border-color: var(--primary);
  box-shadow: 0 40px 80px -28px rgba(0, 0, 0, 0.95), 0 0 0 1px var(--primary);
}
.shot:hover figcaption { color: var(--primary); }

/* ---------- Phone variant (portrait app screenshots) ----------
   Same fan, but framed as handsets: a dark bezel plus a notch, since the
   captures are raw screen grabs with no status bar of their own.
   Portrait screens are ~0.5:1, so the cards get explicit widths instead of
   grid columns - otherwise a full-width fan turns into a 900px-tall block. */
.showcase-phones {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  padding: 40px 34px 34px;
}
.showcase-phones .shot         { width: 235px; flex: none; }
.showcase-phones .shot-center  { width: 265px; z-index: 3; }
.showcase-phones .shot + .shot { margin-left: -66px; }

.showcase-phones .shot-frame {
  border-radius: 30px;
  padding: 9px;
  background: linear-gradient(160deg, #2a3550, #0e1526 60%);
  border: 1px solid #38455f;
  box-shadow: 0 34px 64px -24px rgba(0, 0, 0, 0.95);
  position: relative;
  /* Anchor scaling to the bottom edge so all three frames sit on a common
     baseline and their captions clear the taller centre phone. */
  transform-origin: bottom center;
}
.showcase-phones .shot-frame img {
  border-radius: 22px;
  background: #fff;
}
.showcase-phones .shot-left  .shot-frame { transform: rotate(-9deg) scale(0.8) translate(22px, 16px); }
.showcase-phones .shot-right .shot-frame { transform: rotate(9deg) scale(0.8) translate(-22px, 16px); }
.showcase-phones .shot-center .shot-frame { transform: scale(1.02); }
.showcase-phones .shot:hover .shot-frame { transform: rotate(0deg) scale(1.05) translateY(-10px); }

/* ---------- Dual showcase: web left, mobile right in one row ---------- */
.showcase-dual {
  position: relative;
  display: grid;
  grid-template-columns: 1.9fr minmax(0, 1fr);
  align-items: stretch;
  background:
    radial-gradient(900px 340px at 50% 34%, rgba(96, 165, 250, 0.20), transparent 68%),
    linear-gradient(168deg, #0d1730, #0a1020 62%, #0b1326);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.showcase-dual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.030) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.030) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(75% 70% at 50% 45%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(75% 70% at 50% 45%, #000 30%, transparent 100%);
  pointer-events: none;
}
.showcase-dual .showcase {
  background: transparent;
  border-bottom: none;
  overflow: visible;
  min-width: 0;
}
.showcase-dual .showcase-web-half {
  padding: 58px 8px 40px 22px;
}
.showcase-dual .showcase-mobile-half {
  padding: 58px 22px 40px 8px;
  border-left: 1px solid rgba(255, 255, 255, 0.07);
}
.showcase-dual .showcase-web-half .shot + .shot { margin-left: -52px; }
.showcase-dual .showcase-web-half .shot-center { margin-left: -32px; }
.showcase-dual .showcase-mobile-half .shot { width: 142px; }
.showcase-dual .showcase-mobile-half .shot-center { width: 160px; }
.showcase-dual .showcase-mobile-half .shot + .shot { margin-left: -42px; }
.dual-heading {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(10, 15, 28, 0.82);
  border: 1px solid var(--border-strong);
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.showcase-dual .shot figcaption {
  font-size: 0.64rem;
  margin-top: 8px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.showcase-dual .showcase-mobile-half .shot figcaption {
  font-size: 0.58rem;
  margin-top: 7px;
}

@media (max-width: 940px) {
  .showcase-dual {
    grid-template-columns: 1fr;
  }
  .showcase-dual .showcase-web-half {
    padding: 56px 14px 36px;
  }
  .showcase-dual .showcase-mobile-half {
    border-left: none;
    border-top: 1px solid var(--border);
    padding: 56px 14px 36px;
  }
  /* Keep all three cards on one row instead of stacking one per row. */
  .showcase {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    padding: 32px 14px 28px;
  }
  /* Flatten the fan: no tilt or overlap, but the centre card still pops. */
  .shot-left .shot-frame, .shot-right .shot-frame,
  .shot:hover .shot-frame,
  .showcase-phones .shot-left .shot-frame,
  .showcase-phones .shot-right .shot-frame,
  .showcase-phones .shot:hover .shot-frame,
  .showcase-dual .showcase-mobile-half .shot-left .shot-frame,
  .showcase-dual .showcase-mobile-half .shot-right .shot-frame { transform: none; }

  /* Phones: three across instead of a stacked column. */
  .showcase-phones {
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    padding: 36px 14px 30px;
  }
  .showcase .shot + .shot,
  .showcase .shot-center,
  .showcase-phones .shot + .shot,
  .showcase-phones .shot-center { margin-left: 0; margin-right: 0; }
  .showcase-phones .shot,
  .showcase-phones .shot-center,
  .showcase-dual .showcase-mobile-half .shot,
  .showcase-dual .showcase-mobile-half .shot-center {
    width: auto;
    max-width: none;
    min-width: 0;
    flex: 1 1 0;
    margin: 0;
  }
  /* Compact handset frames for the smaller cards. */
  .showcase-phones .shot-frame,
  .showcase-dual .showcase-mobile-half .shot-frame {
    border-radius: 16px;
    padding: 5px;
  }
  /* Force identical image boxes so captions line up even if the source
     screenshots differ by a few pixels in height. */
  .showcase-phones .shot-frame img,
  .showcase-dual .showcase-mobile-half .shot-frame img {
    width: 100%;
    height: auto;
    aspect-ratio: 700 / 1415;
    object-fit: cover;
    border-radius: 11px;
  }
  /* Compact browser chrome and captions for the smaller cards. */
  .shot-chrome { padding: 5px 7px; gap: 4px; }
  .shot-chrome i { width: 5px; height: 5px; }
  .shot-chrome b { margin-left: 4px; padding: 2px 7px; font-size: 0.52rem; }
  .shot figcaption { font-size: 0.6rem; margin-top: 8px; }
  /* The dual-half rules above have higher specificity, so they would keep
     the fan margins and fixed phone widths on narrow screens - reset them. */
  .showcase-dual .showcase-web-half .shot + .shot,
  .showcase-dual .showcase-web-half .shot-center,
  .showcase-dual .showcase-mobile-half .shot + .shot,
  .showcase-dual .showcase-mobile-half .shot-center { margin-left: 0; margin-right: 0; }
  .showcase-dual .shot figcaption { white-space: normal; }
  .shot-center .shot-frame {
    border-color: var(--primary);
    box-shadow: 0 30px 60px -26px rgba(0, 0, 0, 0.9), 0 0 0 1px var(--primary);
  }
}

/* ---------- Theme toggle button ---------- */
/* Dark mode shows the sun (tap for light); light mode shows the moon. */
.theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }

/* ---------- Light theme component overrides ----------
   Only for the handful of spots that hard-code dark colours instead of
   reading tokens. Everything else re-themes through the tokens above. */
[data-theme="light"] .hero-photo {
  border-color: #cfd9e8;
  box-shadow: 0 26px 44px -22px rgba(15, 23, 42, 0.35);
}
[data-theme="light"] .btn-primary,
[data-theme="light"] .to-top { color: #fff; }

/* Showcase backdrops: the dark navy wash becomes a soft paper-blue one. */
[data-theme="light"] .showcase,
[data-theme="light"] .showcase-dual {
  background:
    radial-gradient(900px 340px at 50% 34%, rgba(37, 99, 235, 0.10), transparent 68%),
    linear-gradient(168deg, #e9effa, #e3eaf6 62%, #e7edf8);
}
[data-theme="light"] .showcase-dual .showcase { background: transparent; }
[data-theme="light"] .showcase::before,
[data-theme="light"] .showcase-dual::before {
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.05) 1px, transparent 1px);
}
[data-theme="light"] .showcase-dual .showcase-mobile-half {
  border-left-color: rgba(15, 23, 42, 0.08);
}
[data-theme="light"] .shot-frame {
  box-shadow: 0 24px 50px -24px rgba(15, 23, 42, 0.35);
}
[data-theme="light"] .shot:hover .shot-frame {
  box-shadow: 0 34px 70px -28px rgba(15, 23, 42, 0.4), 0 0 0 1px var(--primary);
}
[data-theme="light"] .showcase-phones .shot-frame {
  box-shadow: 0 30px 55px -24px rgba(15, 23, 42, 0.4);
}
[data-theme="light"] .shot-chrome { background: #eef2f9; }
[data-theme="light"] .shot-chrome i { background: #cbd5e1; }
[data-theme="light"] .shot-chrome b { background: #fff; color: #64748b; }
[data-theme="light"] .shot figcaption { color: #64748b; }
[data-theme="light"] .shot-center figcaption,
[data-theme="light"] .shot:hover figcaption { color: var(--primary); }

/* Chat widget: readable icon/text on the darker blue buttons. The idle mic
   sits on a light surface, so it keeps the dark ink colour instead of white. */
[data-theme="light"] .chat-toggle,
[data-theme="light"] .chat-user,
[data-theme="light"] .chat-form button[type="submit"],
[data-theme="light"] .chat-form .chat-mic.listening { color: #fff; }
[data-theme="light"] .chat-form .chat-mic { color: var(--ink-soft); }

/* ---------- Certificates ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}
.cert {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.cert:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--border-strong); }
.cert-image {
  display: block;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.cert-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s ease;
}
.cert:hover .cert-image img { transform: scale(1.03); }
.cert-body { padding: 20px 22px; }
.cert-org {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  margin-bottom: 8px;
}
.cert-body h3 { font-size: 1.05rem; font-weight: 700; margin: 0 0 8px; line-height: 1.3; }
.cert-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-mute);
  font-size: 0.85rem;
  margin: 0;
}
.cert-dot {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--ink-mute); flex: none;
}

/* ---------- Print ---------- */
@media print {
  .site-header, .to-top, .nav-links, .hero-cta,
  .project-links, .hero-figure { display: none !important; }
  body { background: #fff; color: #000; }
  .hero { background: #fff; border: 0; }
  .hero-grid { grid-template-columns: 1fr; padding: 0 0 6px; }
  .section { padding: 18px 0; page-break-inside: avoid; }
  .project, .seminar, .skill-card { box-shadow: none; border-color: #ccc; }
  .ph { background: transparent !important; border: 1px dashed #999 !important; color: #666 !important; }
}

/* ---------- Chat widget ---------- */
.chat-toggle {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 0;
  background: var(--primary);
  color: #0b1120;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  z-index: 999;
  transition: transform 0.15s ease, background 0.15s ease;
}
.chat-toggle:hover { background: var(--primary-600); transform: translateY(-2px); }
.chat-toggle svg { width: 26px; height: 26px; }

.chat-panel {
  position: fixed;
  right: 20px;
  bottom: 88px;
  width: min(360px, calc(100vw - 40px));
  height: min(520px, calc(100vh - 120px));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 999;
  transform: translateY(12px) scale(0.98);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.chat-panel.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.chat-head-title { font-weight: 600; color: var(--ink); }
.chat-head-actions { display: flex; align-items: center; gap: 6px; }
.chat-voice {
  background: none;
  border: 0;
  color: var(--ink-soft);
  cursor: pointer;
  padding: 0 4px;
  display: flex;
  align-items: center;
}
.chat-voice:hover { color: var(--ink); }
.chat-voice svg { width: 18px; height: 18px; }
.chat-voice.off { opacity: 0.4; }
.chat-close {
  background: none;
  border: 0;
  color: var(--ink-soft);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}
.chat-close:hover { color: var(--ink); }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chat-bubble {
  max-width: 85%;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.5;
  word-wrap: break-word;
}
.chat-user {
  align-self: flex-end;
  background: var(--primary);
  color: #0b1120;
}
.chat-assistant {
  align-self: flex-start;
  background: var(--surface-2);
  color: var(--ink);
  border: 1px solid var(--border);
}
.chat-link {
  color: var(--primary);
  font-weight: 600;
  text-decoration: underline;
}
.chat-user .chat-link { color: inherit; }
.chat-typing { display: inline-flex; align-items: center; gap: 4px; min-height: 18px; }
.typing-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ink-soft); opacity: 0.4;
  animation: typingBounce 1.2s infinite ease-in-out;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

.chat-form {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.chat-form textarea {
  flex: 1;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--ink);
  font: inherit;
  resize: none;
  min-height: 40px;
  max-height: 120px;
  overflow-y: auto;
  line-height: 1.4;
  font-family: inherit;
}
.chat-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
}
.chat-form textarea.listening {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
}
.chat-form button {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #0b1120;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.chat-form button:disabled { opacity: 0.5; cursor: not-allowed; }
.chat-form button svg { width: 18px; height: 18px; }
.chat-form .chat-mic {
  background: var(--surface-2);
  color: var(--ink-soft);
  border: 1px solid var(--border);
}
.chat-form .chat-mic:hover { color: var(--ink); border-color: var(--primary); }
.chat-form .chat-mic.listening {
  background: var(--primary);
  color: #0b1120;
  border-color: var(--primary);
  animation: micPulse 1.2s infinite ease-in-out;
}
@keyframes micPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

@media (max-width: 480px) {
  .chat-panel { right: 10px; bottom: 80px; width: calc(100vw - 20px); }
  .chat-toggle { right: 10px; bottom: 10px; }
}