*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #f4f2ee;
  --surface: #fdfcfa;
  --border: #e2ded7;
  --muted: #9b9488;
  --text: #1c1a17;
  --accent: #2563c4;
  --accent-bg: #eef3fc;
  --danger: #c4253a;
  --danger-bg: #fcedef;
  --success: #1a7a4a;
  --success-bg: #e8f7ef;
  --warn: #a05c10;
  --warn-bg: #fef3e4;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
}

body {
  font-family: "DM Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem 4rem;
}

header {
  width: 100%;
  max-width: 780px;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  /* Stacks the logo/title and the subtitle */
  align-items: center;
  /* Centers everything horizontally */
  justify-content: center;
  gap: 0.5rem;
  text-align: center;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.logo {
  width: 45px;
  /* Adjust this to make your logo bigger/smaller */
  height: auto;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text);
  margin: 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  width: 100%;
  max-width: 780px;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

.upload-zone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.upload-zone:hover,
.upload-zone.drag {
  border-color: var(--accent);
  background: var(--accent-bg);
}

.upload-zone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.upload-zone p {
  font-size: 0.875rem;
  color: var(--muted);
}

.upload-zone strong {
  color: var(--text);
}

.run-btn {
  width: 100%;
  max-width: 780px;
  padding: 0.9rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: "DM Sans", sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: -0.01em;
  transition: opacity 0.15s, transform 0.1s;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.run-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.run-btn:hover:not(:disabled) {
  opacity: 0.92;
}

.run-btn:active:not(:disabled) {
  transform: scale(0.99);
}

.status {
  display: none;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--muted);
  padding: 0.7rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 780px;
  margin-bottom: 1rem;
}

.status.show {
  display: flex;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.error-box {
  display: none;
  background: var(--danger-bg);
  border: 1px solid #f5c1c8;
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--danger);
  width: 100%;
  max-width: 780px;
  margin-bottom: 1rem;
}

.error-box.show {
  display: block;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.chip {
  padding: 0.3rem 0.7rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.chip.cavity {
  background: var(--danger-bg);
  color: var(--danger);
}

.chip.filling {
  background: var(--success-bg);
  color: var(--success);
}

.chip.implant {
  background: var(--accent-bg);
  color: var(--accent);
}

.chip.impacted {
  background: var(--warn-bg);
  color: var(--warn);
}

.chip.unknown {
  background: var(--bg);
  color: var(--muted);
}

.stat-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.stat {
  flex: 1;
  background: var(--bg);
  border-radius: calc(var(--radius) - 2px);
  padding: 0.7rem 1rem;
  text-align: center;
}

.stat .val {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
}

.stat .lbl {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.role-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 99px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* --- HTML Report Markdown Styling --- */
.report-content {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text);
  font-family: "DM Sans", sans-serif;
}

.report-content h2,
.report-content h3 {
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--text);
}

.report-content p {
  margin-bottom: 1rem;
}

.report-content ul,
.report-content ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.report-content li {
  margin-bottom: 0.3rem;
}

.report-content strong {
  font-weight: 600;
}

/* --- Multi-Image CSS Additions --- */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 10px;
  margin-top: 1rem;
}

.thumbnail-img {
  width: 100%;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.result-wrapper {
  width: 100%;
  max-width: 780px;
  animation: fadeIn 0.4s ease-in;
}

.annotated-img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 1rem;
  background: #000;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Model Dropdown Styling --- */
.model-selection {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.model-selection label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.model-selection select {
  padding: 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-family: "DM Sans", sans-serif;
  font-size: 0.95rem;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s;
}

.model-selection select:focus {
  outline: none;
  border-color: var(--accent);
}