styles.css

:root {
  --bg: #f2f6f4;
  --surface: #ffffff;
  --surface-soft: #f7faf8;
  --ink: #14231e;
  --muted: #65736d;
  --border: #d7e1dc;
  --accent: #0d7a62;
  --accent-dark: #075c49;
  --accent-soft: #e3f3ed;
  --blue: #2874b8;
  --warning: #8b5a00;
  --danger: #a33131;
  --shadow: 0 18px 50px rgba(24, 56, 44, 0.09);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 13px;
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 4% 2%, rgba(13, 122, 98, 0.09), transparent 28rem),
    radial-gradient(circle at 95% 5%, rgba(40, 116, 184, 0.08), transparent 24rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button, input { font: inherit; }
button { cursor: pointer; }

.site-header {
  width: min(1240px, calc(100% - 32px));
  margin: 20px auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand { display: flex; align-items: center; gap: 13px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  color: #fff;
  background: linear-gradient(145deg, var(--accent), #15a379);
  font-size: 26px;
  box-shadow: 0 10px 25px rgba(13, 122, 98, 0.22);
}
.eyebrow, .kicker, .step-label {
  margin: 0;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.brand h1 { margin: 1px 0 0; font-size: 1.18rem; letter-spacing: -0.02em; }

.runtime-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.8);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
}
.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #d19719;
  box-shadow: 0 0 0 4px rgba(209, 151, 25, 0.13);
}
.runtime-pill.ready .status-dot { background: #15936f; box-shadow: 0 0 0 4px rgba(21,147,111,.13); }
.runtime-pill.error .status-dot { background: var(--danger); box-shadow: 0 0 0 4px rgba(163,49,49,.13); }

.page-shell { width: min(1240px, calc(100% - 32px)); margin: 24px auto 46px; }

.hero-card {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(330px, .85fr);
  gap: 38px;
  padding: 38px;
  border: 1px solid rgba(13, 122, 98, 0.12);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #ffffff 0%, #f3fbf7 55%, #edf6fb 100%);
  box-shadow: var(--shadow);
}
.hero-card::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  right: -140px;
  top: -170px;
  border: 48px solid rgba(13, 122, 98, 0.055);
  border-radius: 50%;
}
.hero-copy { position: relative; z-index: 1; }
.hero-copy h2 {
  max-width: 760px;
  margin: 8px 0 12px;
  font-size: clamp(2rem, 4.1vw, 3.35rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}
.hero-copy > p:not(.kicker) { max-width: 760px; margin: 0; color: var(--muted); font-size: 1.04rem; }
.privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 20px;
  padding: 10px 13px;
  border-radius: 12px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  font-size: .88rem;
  font-weight: 700;
}
.model-facts {
  position: relative;
  z-index: 1;
  align-self: center;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 0;
}
.model-facts div {
  padding: 18px;
  border: 1px solid rgba(13,122,98,.13);
  border-radius: 15px;
  background: rgba(255,255,255,.82);
}
.model-facts dt { color: var(--muted); font-size: .76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; }
.model-facts dd { margin: 5px 0 0; font-size: 1.08rem; font-weight: 800; }

.workspace { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 22px; }
.panel, .status-card, .info-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: 0 12px 32px rgba(28, 55, 45, .055);
}
.panel { min-height: 590px; padding: 24px; }
.panel-heading, .status-title-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.panel-heading h2, .status-title-row h2, .info-card h2 { margin: 3px 0 0; font-size: 1.15rem; letter-spacing: -.02em; }
.text-button {
  border: 0;
  padding: 7px 9px;
  border-radius: 9px;
  color: var(--accent);
  background: transparent;
  font-weight: 750;
}
.text-button:hover:not(:disabled) { background: var(--accent-soft); }
button:disabled { cursor: not-allowed; opacity: .52; }

.drop-zone {
  min-height: 300px;
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1.5px dashed #a9bdb4;
  border-radius: 17px;
  background: var(--surface-soft);
  text-align: center;
  transition: border-color .2s, background .2s, transform .2s;
}
.drop-zone:hover, .drop-zone:focus-visible, .drop-zone.dragging {
  border-color: var(--accent);
  background: #eef8f3;
  transform: translateY(-1px);
  outline: none;
}
.drop-zone strong { font-size: 1.08rem; }
.drop-zone span { color: var(--muted); }
.drop-zone small { margin-top: 8px; color: #87958f; }
.upload-icon {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  margin-bottom: 8px;
  border-radius: 19px;
  color: var(--accent);
  background: var(--accent-soft);
}
.upload-icon svg { width: 29px; height: 29px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.preview-wrap {
  margin-top: 22px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 17px;
  background: #eef2f0;
}
.preview-wrap img { display: block; width: 100%; height: 330px; object-fit: contain; background: #eef2f0; }
.image-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 14px; background: #fff; }
.image-meta strong { max-width: 65%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.image-meta span { color: var(--muted); font-size: .82rem; }

.primary-button {
  width: 100%;
  min-height: 49px;
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #0d906f);
  font-weight: 800;
  box-shadow: 0 10px 22px rgba(13,122,98,.18);
  transition: transform .16s, box-shadow .16s;
}
.primary-button:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 13px 27px rgba(13,122,98,.23); }
.button-spinner { width: 17px; height: 17px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .75s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.inline-message { min-height: 21px; margin: 9px 2px 0; color: var(--muted); font-size: .84rem; }
.inline-message.error { color: var(--danger); }

.provider-badge {
  padding: 6px 9px;
  border-radius: 999px;
  color: var(--blue);
  background: #e7f1fb;
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .06em;
}
.empty-result { min-height: 470px; display: grid; place-content: center; justify-items: center; text-align: center; color: var(--muted); }
.empty-result-icon { display: grid; place-items: center; width: 70px; height: 70px; border-radius: 22px; color: var(--accent); background: var(--accent-soft); font-size: 2rem; }
.empty-result h3 { margin: 17px 0 5px; color: var(--ink); }
.empty-result p { max-width: 330px; margin: 0; }

.results { margin-top: 20px; }
.primary-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px;
  border-radius: 17px;
  background: linear-gradient(135deg, #effaf5, #eef6fc);
}
.result-label { margin: 0; color: var(--muted); font-size: .78rem; font-weight: 750; text-transform: uppercase; letter-spacing: .07em; }
.primary-result h3 { margin: 5px 0 0; font-size: clamp(1.55rem, 4vw, 2.2rem); text-transform: capitalize; letter-spacing: -.035em; }
.confidence-ring {
  --confidence: 0deg;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: conic-gradient(var(--accent) var(--confidence), #dbe8e2 0);
  position: relative;
}
.confidence-ring::before { content: ""; position: absolute; inset: 8px; border-radius: 50%; background: #fff; }
.confidence-ring span { position: relative; z-index: 1; font-size: 1.03rem; font-weight: 850; }
.top-three-wrap { margin-top: 20px; }
.top-three-wrap h4, .all-probabilities summary { margin: 0 0 10px; font-size: .9rem; }
.top-three { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; counter-reset: rank; }
.top-three li { counter-increment: rank; display: grid; grid-template-columns: 29px 1fr auto; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 11px; }
.top-three li::before { content: counter(rank); display: grid; place-items: center; width: 25px; height: 25px; border-radius: 8px; color: var(--accent-dark); background: var(--accent-soft); font-weight: 850; font-size: .78rem; }
.top-three .class-name { font-weight: 750; text-transform: capitalize; }
.top-three .class-prob { color: var(--muted); font-variant-numeric: tabular-nums; }
.all-probabilities { margin-top: 18px; }
.all-probabilities summary { cursor: pointer; font-weight: 800; }
.probability-list { display: grid; gap: 8px; margin-top: 11px; }
.probability-row { display: grid; grid-template-columns: 82px 1fr 54px; align-items: center; gap: 9px; font-size: .78rem; }
.probability-row .name { text-transform: capitalize; overflow: hidden; text-overflow: ellipsis; }
.bar-track { height: 8px; overflow: hidden; border-radius: 999px; background: #e4ece8; }
.bar-fill { height: 100%; width: 0; border-radius: inherit; background: linear-gradient(90deg, var(--accent), #34a8a0); transition: width .45s ease; }
.probability-row .value { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }
.timing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin-top: 19px; }
.timing-grid div { padding: 11px; border-radius: 11px; background: var(--surface-soft); }
.timing-grid span { display: block; color: var(--muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .05em; }
.timing-grid strong { display: block; margin-top: 3px; font-size: .9rem; font-variant-numeric: tabular-nums; }

.status-card { margin-top: 22px; padding: 20px 23px; }
.status-title-row strong { color: var(--accent); font-variant-numeric: tabular-nums; }
.progress-track { height: 9px; margin-top: 15px; overflow: hidden; border-radius: 999px; background: #e2eae6; }
.progress-bar { width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), #31a691); transition: width .25s ease; }
.status-card > p { margin: 10px 0 0; color: var(--muted); font-size: .87rem; }
.status-card.error { border-color: rgba(163,49,49,.3); }
.status-card.error .progress-bar { background: var(--danger); }

.information-grid { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 16px; margin-top: 22px; }
.info-card { padding: 21px; }
.info-card p { margin: 10px 0 0; color: var(--muted); font-size: .9rem; }
.class-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.class-chip { padding: 6px 9px; border: 1px solid #cfe0d8; border-radius: 999px; color: var(--accent-dark); background: #f0f8f4; font-size: .76rem; font-weight: 750; text-transform: capitalize; }
.caution-card { background: #fffdf7; border-color: #eadfbd; }
.caution-card h2 { color: var(--warning); }

footer { padding: 22px 16px 34px; text-align: center; color: var(--muted); font-size: .82rem; }
.hidden { display: none !important; }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }

@media (max-width: 900px) {
  .hero-card { grid-template-columns: 1fr; padding: 28px; }
  .model-facts { grid-template-columns: repeat(4, 1fr); }
  .workspace { grid-template-columns: 1fr; }
  .panel { min-height: unset; }
  .information-grid { grid-template-columns: 1fr; }
}

@media (max-width: 650px) {
  .site-header { align-items: flex-start; }
  .runtime-pill { max-width: 150px; }
  .runtime-pill span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .page-shell, .site-header { width: min(100% - 20px, 1240px); }
  .hero-card { padding: 23px 20px; }
  .hero-copy h2 { font-size: 2.05rem; }
  .model-facts { grid-template-columns: 1fr 1fr; }
  .panel { padding: 19px; }
  .drop-zone { min-height: 245px; }
  .preview-wrap img { height: 270px; }
  .primary-result { align-items: flex-start; }
  .confidence-ring { width: 75px; height: 75px; }
  .probability-row { grid-template-columns: 70px 1fr 48px; }
  .timing-grid { grid-template-columns: 1fr; }
}