/* CHACHA — shared styles
   Tokens + common chrome for all pages. Page-specific rules stay inline.
   Load before each page's <style> so page overrides win the cascade. */

/* Design tokens */
:root {
  --bg: #ffffff;
  --surface: #fafafa;
  --border: #e5e5e5;
  --border-strong: #d4d4d4;
  --text: #0a0a0a;
  --text-muted: #737373;
  --text-faint: #a3a3a3;
  --accent-soft: #f5f5f5;
  --success: #16a34a;
  --danger: #dc2626;
}

/* Reset & base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 2rem 1.5rem 3rem;
  -webkit-font-smoothing: antialiased;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
}

/* Header & logo */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
  flex-wrap: wrap;
}
.header-left {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  min-width: 0;
}
.logo {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.logo small {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0;
  margin-top: -0.2rem;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.9rem;
  background: var(--text);
  color: var(--bg);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.15s;
}
.back-link:hover {
  background: #262626;
}

/* Typography */
.section-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-faint);
  margin-bottom: 0.4rem;
  letter-spacing: 0.01em;
}
h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}
h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* Buttons */
.btn {
  border: 1px solid var(--text);
  background: var(--text);
  color: var(--bg);
  padding: 0.6rem 1rem;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn:hover {
  background: #262626;
  border-color: #262626;
}
.btn:active {
  transform: translateY(1px);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn:disabled:hover {
  background: var(--text);
  border-color: var(--text);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  background: var(--accent-soft);
  border-color: var(--text);
}

/* Inputs */
input[type="text"], input[type="number"], select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  background: var(--bg);
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--text);
  border-radius: 6px;
  transition: all 0.15s;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--text);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
  backdrop-filter: blur(2px);
}
.modal-backdrop.open {
  display: flex;
}
.modal {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 1.75rem;
  border-radius: 14px;
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 50px rgba(0,0,0,0.15);
  animation: modalIn 0.2s ease-out;
}
@keyframes modalIn {
  from  { opacity: 0; transform: translateY(8px) scale(0.98);}
  to  { opacity: 1; transform: translateY(0) scale(1);}
}
.modal h3 {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.modal .sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.4rem;
}
.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

/* Lock screen */
.lock-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.lock-screen.hidden {
  display: none;
}
.lock-card {
  max-width: 400px;
  width: 100%;
  text-align: center;
}
.lock-icon {
  width: 56px;
  height: 56px;
  background: var(--accent-soft);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--text-muted);
}
.lock-title {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}
.lock-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.lock-back {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
}
.lock-back:hover {
  color: var(--text);
}
.lock-content {
  visibility: hidden;
}
.lock-content.unlocked {
  visibility: visible;
}
.lock-pin-input {
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  letter-spacing: 0.5em;
  transition: all 0.15s;
  margin-bottom: 0.75rem;
}
.lock-pin-input:focus {
  outline: none;
  border-color: var(--text);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}
.lock-pin-input.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
  animation: shake 0.3s;
}
@keyframes shake {
  0%, 100%  { transform: translateX(0);}
  25%  { transform: translateX(-4px);}
  75%  { transform: translateX(4px);}
}
.lock-error {
  font-size: 0.85rem;
  color: var(--danger);
  margin-bottom: 0.5rem;
  min-height: 1.2em;
}
.lock-btn {
  width: 100%;
  border: 1px solid var(--text);
  background: var(--text);
  color: var(--bg);
  padding: 0.85rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.15s;
}
.lock-btn:hover {
  background: #262626;
}
.lock-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Status banner */
.status-banner {
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.status-banner.error {
  background: #fef2f2;
  color: var(--danger);
}
.status-banner.info {
  background: var(--accent-soft);
  color: var(--text-muted);
}

/* Footer */
.footer-note {
  margin-top: 2.5rem;
  font-size: 0.75rem;
  text-align: center;
  color: var(--text-faint);
}