/* ==========================================================================
   CamAlien Roadkill Watch
   Palette: forest green for structure, dusk amber for emphasis — the two
   colours of the thing itself, headlights on a verge at last light.
   ========================================================================== */

:root {
  --bg:            #f6f8f3;
  --bg-tint:       #eef2e8;
  --surface:       #ffffff;
  --surface-alt:   #f2f5ec;
  --border:        #e0e6d7;
  --border-strong: #c7d0b7;
  --text:          #14201a;
  --text-soft:     #55604f;
  --text-faint:    #7e8878;
  --accent:        #2c7a4b;
  --accent-hover:  #23653d;
  --accent-soft:   #e6f1e8;
  --accent-ink:    #ffffff;
  --amber:         #b5701f;
  --amber-soft:    #fbf0df;
  --danger:        #b3261e;
  --danger-soft:   #fdecea;

  --radius:        12px;
  --radius-lg:     20px;
  --shadow-sm:     0 1px 2px rgba(16,32,20,.06);
  --shadow:        0 2px 4px rgba(16,32,20,.04), 0 12px 32px rgba(16,32,20,.07);
  --shadow-lg:     0 4px 8px rgba(16,32,20,.05), 0 24px 56px rgba(16,32,20,.11);

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* The hero is dark in both themes — it is a night scene. */
  --hero-bg:   #0c1a11;
  --hero-text: #eef3e9;
  --hero-soft: #b3c4b0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:            #0a110c;
    --bg-tint:       #0d160f;
    --surface:       #121b15;
    --surface-alt:   #18231a;
    --border:        #26332a;
    --border-strong: #3c4c40;
    --text:          #e9efe6;
    --text-soft:     #a6b2a2;
    --text-faint:    #7c8878;
    --accent:        #6fc088;
    --accent-hover:  #8bd3a0;
    --accent-soft:   #16281c;
    --accent-ink:    #08150d;
    --amber:         #e3a35c;
    --amber-soft:    #2a2015;
    --danger:        #f2b8b5;
    --danger-soft:   #341e1c;
    --shadow-sm:     0 1px 2px rgba(0,0,0,.4);
    --shadow:        0 2px 4px rgba(0,0,0,.3), 0 12px 32px rgba(0,0,0,.32);
    --shadow-lg:     0 4px 8px rgba(0,0,0,.35), 0 24px 56px rgba(0,0,0,.45);
  }
}

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

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap { width: min(920px, 100% - 2.5rem); margin-inline: auto; }
.hidden { display: none !important; }

h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -0.022em; font-weight: 680; }
p { margin: 0; }
a { color: var(--accent); }

/* --------------------------------------------------------------- header --- */

.site-header {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .8rem 0;
}
.brand {
  display: flex; align-items: center; gap: .6rem;
  font-size: .98rem; color: var(--text); letter-spacing: -0.01em;
}
.brand strong { font-weight: 700; }
.brand-mark { width: 26px; height: 26px; color: var(--accent); flex: none; }

.header-nav { display: flex; align-items: center; gap: .35rem .9rem; }
.header-link {
  font-size: .85rem; font-weight: 560; text-decoration: none; color: var(--text-soft);
  padding: .4rem .2rem; border-radius: 8px; white-space: nowrap;
  transition: color .16s;
}
.header-link:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 460px) { .header-link { display: none; } }

.header-cta {
  font-size: .85rem; font-weight: 620; text-decoration: none;
  color: var(--accent); background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  padding: .4rem .9rem; border-radius: 999px; white-space: nowrap;
  transition: background .16s, color .16s;
}
.header-cta:hover { background: var(--accent); color: var(--accent-ink); }

/* ----------------------------------------------------------------- hero --- */

.hero-band {
  position: relative; isolation: isolate; overflow: hidden;
  background: var(--hero-bg);
  padding: clamp(4rem, 3rem + 8vw, 8.5rem) 0 clamp(3rem, 2rem + 5vw, 5rem);
}
.hero-art {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: -1; pointer-events: none;
}
.hero-content { position: relative; display: grid; gap: 1.35rem; max-width: 44rem; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .55rem;
  font-size: .74rem; font-weight: 660; letter-spacing: .13em; text-transform: uppercase;
  color: var(--amber); margin: 0;
}
.eyebrow::before {
  content: ""; width: 1.6rem; height: 2px; border-radius: 2px;
  background: currentColor; opacity: .65;
}
.hero-content .eyebrow { color: #f0b878; }
.eyebrow-dark { color: var(--accent); }

.hero-content h1 {
  font-size: clamp(2.1rem, 1.2rem + 3.6vw, 3.6rem);
  font-weight: 720; letter-spacing: -0.032em; color: #fff;
  text-wrap: balance;
}
.hero-content .lead {
  font-size: clamp(1rem, .96rem + .3vw, 1.12rem);
  color: var(--hero-soft); max-width: 58ch;
}
.hero-actions {
  display: flex; flex-wrap: wrap; align-items: center; gap: .85rem 1.25rem;
  margin-top: .4rem;
}
.hero-note { font-size: .84rem; color: #93a691; }

/* -------------------------------------------------------------- sections -- */

.section { padding: clamp(3rem, 2rem + 4vw, 4.5rem) 0 0; }
.section-title {
  font-size: clamp(1.4rem, 1.2rem + .8vw, 1.85rem);
  margin: .55rem 0 1.5rem; text-wrap: balance;
}
.lead-sm { color: var(--text-soft); }

/* ---------------------------------------------------------------- cards --- */

.cards {
  display: grid; gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card {
  position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.5rem 1.4rem 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--amber));
  opacity: 0; transition: opacity .18s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
}
.card:hover::before { opacity: 1; }
.card-icon {
  display: grid; place-items: center;
  width: 46px; height: 46px; margin-bottom: .95rem;
  border-radius: 13px; background: var(--accent-soft); color: var(--accent);
}
.card-icon svg { width: 27px; height: 27px; fill: currentColor; }
.card h3 { font-size: 1.05rem; margin-bottom: .4rem; }
.card p { font-size: .92rem; color: var(--text-soft); }

.scope-note {
  margin-top: 1.35rem; padding: .95rem 1.15rem;
  font-size: .9rem; color: var(--text-soft);
  background: var(--amber-soft);
  border: 1px solid color-mix(in srgb, var(--amber) 24%, transparent);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
}
.scope-note strong { color: var(--text); font-weight: 650; }

/* --------------------------------------------------------------- panels --- */

.panel {
  position: relative;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: clamp(1.5rem, 1.1rem + 1.6vw, 2.4rem);
  margin-top: clamp(3rem, 2rem + 4vw, 4.5rem);
  scroll-margin-top: 5rem;
}
.panel-done { text-align: left; }

/* ----------------------------------------------------------------- form --- */

form { display: grid; gap: 1.35rem; }
.field-row { display: grid; gap: 1.35rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.field { display: grid; gap: .42rem; }

label { font-size: .875rem; font-weight: 630; color: var(--text); }
.req { color: var(--accent); }
.optional { font-weight: 400; color: var(--text-faint); font-size: .8rem; }

.anon-note {
  font-size: .885rem; color: var(--text-soft); max-width: 70ch;
  background: var(--surface-alt); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius); padding: .9rem 1.1rem;
}

input[type=text], input[type=email], textarea {
  font: inherit; color: var(--text);
  background: var(--bg-tint); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: .72rem .9rem; width: 100%;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
textarea { resize: vertical; min-height: 6.5rem; }
input::placeholder, textarea::placeholder { color: var(--text-faint); }
input:hover, textarea:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border-strong)); }
input:focus-visible, textarea:focus-visible,
.dropzone:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 26%, transparent);
}
input:focus-visible, textarea:focus-visible { background: var(--surface); }
input.invalid, textarea.invalid { border-color: var(--danger); }
.hint { font-size: .8rem; color: var(--text-faint); }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ------------------------------------------------------------- dropzone --- */

.dropzone {
  position: relative; overflow: hidden;
  display: grid; justify-items: center; gap: .28rem;
  padding: 2.6rem 1.5rem; text-align: center; cursor: pointer;
  border: 2px dashed var(--border-strong); border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 100% at 50% 0%, var(--accent-soft) 0%, transparent 62%),
    var(--surface-alt);
  transition: border-color .18s, background .18s, transform .12s;
}
.dropzone:hover { border-color: var(--accent); }
.dropzone.dragover {
  border-color: var(--accent); border-style: solid;
  background:
    radial-gradient(120% 100% at 50% 0%, var(--accent-soft) 0%, transparent 70%),
    var(--accent-soft);
  transform: scale(1.006);
}
.dz-ring {
  display: grid; place-items: center;
  width: 62px; height: 62px; margin-bottom: .55rem;
  border-radius: 50%; color: var(--accent);
  background: var(--surface);
  border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease;
}
.dropzone:hover .dz-ring, .dropzone.dragover .dz-ring { transform: translateY(-2px) scale(1.04); }
.dz-icon { width: 30px; height: 30px; }
.dz-title { font-weight: 640; font-size: 1.02rem; }
.dz-sub { font-size: .875rem; color: var(--text-soft); }
.dz-limits { font-size: .78rem; color: var(--text-faint); margin-top: .55rem; }
.link { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

/* ------------------------------------------------------------ file list --- */

.list-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: .6rem; }
.list-head h3 { font-size: .95rem; font-weight: 640; }
.file-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; max-height: 23rem; overflow-y: auto; }
.file-item {
  display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: .8rem;
  background: var(--surface-alt); border: 1px solid var(--border);
  border-radius: 10px; padding: .58rem .8rem; font-size: .875rem;
}
.file-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { color: var(--text-faint); font-variant-numeric: tabular-nums; font-size: .8rem; }
.file-item.error { border-color: var(--danger); background: var(--danger-soft); }
.file-item.error .file-status { color: var(--danger); }
.file-status { font-size: .78rem; color: var(--text-soft); font-variant-numeric: tabular-nums; min-width: 4.6rem; text-align: right; }
.file-status.done { color: var(--accent); font-weight: 600; }
.remove-btn {
  border: none; background: none; cursor: pointer; color: var(--text-faint);
  font-size: 1.2rem; line-height: 1; padding: .1rem .35rem; border-radius: 6px;
  transition: color .15s, background .15s;
}
.remove-btn:hover { color: var(--danger); background: var(--danger-soft); }

/* -------------------------------------------------------------- buttons --- */

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font: inherit; font-weight: 640; cursor: pointer; text-decoration: none;
  border-radius: var(--radius); padding: .78rem 1.6rem;
  border: 1px solid transparent;
  transition: background .16s, transform .12s, box-shadow .16s;
}
.btn-primary {
  background: var(--accent); color: var(--accent-ink);
  box-shadow: 0 1px 2px rgba(16,32,20,.16), 0 6px 18px color-mix(in srgb, var(--accent) 24%, transparent);
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); transform: translateY(-1px); }
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: .55; cursor: not-allowed; box-shadow: none; }
.btn-ghost { background: transparent; border-color: var(--border-strong); color: var(--text); }
.btn-ghost:hover { background: var(--surface-alt); }
.btn-text {
  border: none; background: none; font: inherit; font-size: .85rem; padding: 0;
  color: var(--text-soft); cursor: pointer; text-decoration: underline; text-underline-offset: 2px;
}
.btn-text:hover { color: var(--danger); }

.actions { display: grid; gap: .8rem; justify-items: start; }
.privacy-note { font-size: .82rem; color: var(--text-faint); max-width: 62ch; }

/* --------------------------------------------------------------- alerts --- */

.alert { border-radius: var(--radius); padding: .85rem 1rem; font-size: .9rem; }
.alert-error {
  background: var(--danger-soft); color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 34%, transparent);
}

/* ------------------------------------------------------------- progress --- */

.progress-track {
  height: 10px; border-radius: 999px; margin: 1.1rem 0 .55rem;
  background: var(--surface-alt); border: 1px solid var(--border); overflow: hidden;
}
.progress-bar {
  height: 100%; width: 0%; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 60%, var(--amber)));
  transition: width .25s ease;
}
#progress-list { margin-top: 1.25rem; }

/* ----------------------------------------------------------------- done --- */

.done-mark {
  width: 58px; height: 58px; border-radius: 50%; margin-bottom: 1.1rem;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
}
.done-mark svg { width: 32px; height: 32px; }
#done-panel .hint { margin-top: .8rem; }
code {
  font-family: var(--mono); font-size: .85em;
  background: var(--surface-alt); border: 1px solid var(--border);
  padding: .15rem .45rem; border-radius: 6px;
}

/* ------------------------------------------------------------------ faq --- */

.faq { display: grid; gap: .55rem; padding-bottom: clamp(3rem, 2rem + 4vw, 4.5rem); }
.faq .eyebrow, .faq .section-title { grid-column: 1 / -1; }
details {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .9rem 1.15rem;
  transition: border-color .15s, background .15s;
}
details:hover { border-color: var(--border-strong); }
details[open] { background: var(--surface-alt); border-color: var(--border-strong); }
summary {
  cursor: pointer; font-weight: 620; font-size: .95rem;
  list-style: none; display: flex; align-items: center; gap: .7rem;
}
summary::-webkit-details-marker { display: none; }
summary::before {
  content: ""; flex: none; width: 9px; height: 9px;
  border-right: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg) translate(-1px, -1px);
  transition: transform .18s ease;
}
details[open] summary::before { transform: rotate(45deg) translate(-2px, -2px); }
details p { margin-top: .65rem; padding-left: 1.4rem; font-size: .9rem; color: var(--text-soft); max-width: 70ch; }

/* --------------------------------------------------------------- footer --- */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-tint);
  padding: 2rem 0;
  font-size: .85rem; color: var(--text-faint);
}
.footer-inner { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: center; justify-content: space-between; }
.brand-footer { color: var(--text-soft); font-size: .9rem; }
.footer-meta { text-align: right; }
.footer-meta p + p { margin-top: .2rem; }
@media (max-width: 560px) { .footer-meta { text-align: left; } }

/* ------------------------------------------------------------- a11y/motion */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .card:hover { transform: none; }
}