:root {
  --bg: #121016;
  --surface: #1c1a22;
  --surface-raised: #242130;
  --border: #322e3d;
  --text: #ECE7F0;
  --text-dim: #9c94ab;
  --accent: #b388ff;
  --accent-dim: #7c5cd6;
  --accent-text: #1a0f2e;
  --danger: #e57373;
  --radius: 14px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom);
}

.app-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent);
  margin: 0;
}

/* --- Top bar --- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  padding-top: calc(16px + env(safe-area-inset-top));
  background: rgba(18, 16, 22, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.logout-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.logout-link:active {
  background: var(--surface-raised);
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px 16px 40px;
}

/* --- Entry form --- */
.entry-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

textarea {
  width: 100%;
  resize: vertical;
  min-height: 72px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.5;
}

textarea::placeholder {
  color: var(--text-dim);
}

.btn-primary {
  align-self: flex-end;
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  padding: 10px 22px;
  border-radius: 24px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease;
}

.btn-primary:active {
  transform: scale(0.97);
  background: var(--accent-dim);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: default;
}

/* --- History --- */
.day-group {
  margin-bottom: 24px;
}

.day-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin: 0 0 10px 4px;
  font-weight: 600;
}

.entry {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 10px;
}

.entry-text {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.98rem;
  line-height: 1.5;
  margin-bottom: 8px;
}

.entry-text[contenteditable="true"] {
  outline: 1px dashed var(--accent-dim);
  border-radius: 8px;
  padding: 6px;
  background: var(--surface-raised);
}

.entry-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.entry-time {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.edit-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
}

.edit-btn:active {
  background: var(--surface-raised);
  color: var(--accent);
}

.empty-state {
  color: var(--text-dim);
  text-align: center;
  margin-top: 40px;
  font-size: 0.95rem;
}

/* --- Login page --- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  gap: 28px;
}

.login-wrap .app-title {
  font-size: 2rem;
}

.login-card {
  width: 100%;
  max-width: 340px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.login-card input {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 1rem;
  outline: none;
}

.login-card input:focus {
  border-color: var(--accent-dim);
}

.login-card .btn-primary {
  align-self: stretch;
  text-align: center;
  margin-top: 4px;
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0;
}

@media (min-width: 700px) {
  main { padding-top: 24px; }
}