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

/* Variables */
:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #666;
  --color-border: #e0e0e0;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --color-info: #0284c7;
  --radius: 6px;
  --max-width: 860px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
}

/* Navbar */
.navbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  white-space: nowrap;
}
.nav-brand:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.nav-divider {
  width: 1px;
  height: 1.25rem;
  background: var(--color-border);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Main content */
main.container {
  flex: 1;
  padding-top: 2rem;
  padding-bottom: 2rem;
}

/* Footer */
footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* Typography */
h1 { font-size: 1.75rem; margin-bottom: 0.75rem; }
h2 { font-size: 1.35rem; margin-top: 1.5rem; margin-bottom: 0.5rem; }
h3 { font-size: 1.1rem; margin-bottom: 0.25rem; }
p + p { margin-top: 0.75rem; }

section + section {
  margin-top: 2rem;
}

/* Flash messages */
.flash {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.flash-success { background: #dcfce7; color: #166534; }
.flash-error { background: #fee2e2; color: #991b1b; }
.flash-info { background: #dbeafe; color: #1e40af; }

/* Persistent notice (not auto-dismissed) */
.notice {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-top: 1.5rem;
  font-size: 0.9rem;
  background: #dbeafe;
  color: #1e40af;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--color-primary);
  color: white;
  padding: 0.55rem 1.25rem;
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.25);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: #f3f4f6;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: #e5e7eb;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
  border-width: 1.5px;
}
.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

.btn-outline.btn-active {
  background: var(--color-primary);
  color: white;
}
.btn-outline.btn-active:hover {
  background: var(--color-primary-hover);
}

.btn-danger {
  background: var(--color-danger);
  color: white;
}
.btn-danger:hover {
  background: #b91c1c;
}

.btn-small {
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
}

/* OAuth buttons */
.auth-page {
  max-width: 400px;
  margin: 2rem auto;
  text-align: center;
}
.auth-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.btn-oauth {
  padding: 0.75rem 1rem;
  font-size: 1rem;
}
.btn-google {
  background: #4285f4;
  color: white;
}
.btn-google:hover { background: #3367d6; }
.btn-github {
  background: #24292e;
  color: white;
}
.btn-github:hover { background: #1a1e22; }

/* Forms */
.form {
  max-width: 500px;
}
.form-wide {
  max-width: 640px;
}
.form-group {
  margin-bottom: 1rem;
}
.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}
.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="file"],
.form-group textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
}
.form-group small {
  display: block;
  margin-top: 0.25rem;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.form-inline {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.form-inline input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

/* Works */
.works-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.work-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--color-text);
  transition: border-color 0.15s;
}
.work-card:hover {
  text-decoration: none;
  border-color: var(--color-primary);
}
.work-card h3 {
  margin-bottom: 0.25rem;
}

.work-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Work detail */
.work-detail { }

.work-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.work-header h1 {
  margin-bottom: 0;
}

.work-info {
  margin-top: 1rem;
}
.work-info dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
  font-size: 0.9rem;
}
.work-info dt {
  font-weight: 500;
  color: var(--color-text-muted);
}
.work-info .hash {
  font-family: monospace;
  font-size: 0.8rem;
  word-break: break-all;
}

/* Attestation actions */
.attestation-actions {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.attest-buttons {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}
.inline-form {
  display: inline;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
}
.badge-attested { background: #dcfce7; color: #166534; }
.badge-untrusted { background: #fef3c7; color: #92400e; }
.badge-unattested { background: #f3f4f6; color: #6b7280; }
.badge-type { background: #ede9fe; color: #5b21b6; }

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 0.5rem;
}
.table th, .table td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.table th {
  font-weight: 500;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* Avatars */
.avatar-small {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  vertical-align: middle;
}
.avatar-large {
  width: 64px;
  height: 64px;
  border-radius: 50%;
}

/* Profile */
.profile-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.profile-actions {
  margin-left: auto;
}

/* User list */
.user-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.user-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.user-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  color: var(--color-text);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

/* Hero */
.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}
.hero h1 {
  font-size: 2.25rem;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* How it works */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}
.step {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

/* About */
.about-page {
  max-width: 650px;
}
.about-page ol, .about-page ul {
  padding-left: 1.5rem;
  margin-top: 0.5rem;
}
.about-page li {
  margin-bottom: 0.35rem;
}

/* Error page */
.error-page {
  text-align: center;
  padding: 3rem 0;
}
.error-page h1 {
  font-size: 4rem;
  color: var(--color-text-muted);
}
.error-page p {
  margin-bottom: 1.5rem;
}

/* Utilities */
.text-muted { color: var(--color-text-muted); font-size: 0.85rem; }

/* Trust level controls */
.trust-level-select {
  padding: 0.25rem 0.4rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.8rem;
  background: var(--color-surface);
  cursor: pointer;
}

.trust-level-form {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.trust-add-form {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.trust-settings-form {
  margin-top: 0.5rem;
}

.trust-settings-fields {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  flex-wrap: wrap;
}

.trust-settings-fields label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  font-weight: 500;
}

.trust-settings-fields select {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.85rem;
}

.trust-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.trust-level-indicator {
  color: var(--color-success);
  font-weight: 500;
  font-size: 0.85rem;
}

/* Status card */
.status-card {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
}
.status-card[data-status="attested"] {
  border-color: var(--color-success);
}
.status-card[data-status="untrusted"] {
  border-color: var(--color-warning);
}
.status-card[data-status="unattested"] {
  border-color: var(--color-border);
}

.status-sections {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.status-section__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.status-row {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

.status-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  min-width: 22px;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
  margin-top: 1px;
}
.status-icon--green {
  background: #dcfce7;
  color: #166534;
}
.status-icon--yellow {
  background: #fef3c7;
  color: #92400e;
}
.status-icon--gray {
  background: #f3f4f6;
  color: #6b7280;
}

/* Collapsible details */
details.details-section {
  margin-top: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
details.details-section summary {
  padding: 0.75rem 1rem;
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
details.details-section summary::-webkit-details-marker {
  display: none;
}
details.details-section summary::before {
  content: '\25B8';
  font-size: 0.85rem;
  transition: transform 0.15s;
}
details.details-section[open] summary::before {
  transform: rotate(90deg);
}
details.details-section > :not(summary) {
  padding: 0 1rem 1rem;
}

/* Responsive */
@media (max-width: 600px) {
  .nav-links { gap: 0.5rem; font-size: 0.8rem; }
  .hero h1 { font-size: 1.75rem; }
  .work-info dl { grid-template-columns: 1fr; }
  .work-header { flex-direction: column; align-items: flex-start; }
  .profile-header { flex-direction: column; align-items: flex-start; }
  .profile-actions { margin-left: 0; }
  .status-sections { grid-template-columns: 1fr; }
}