:root {
  --sage: #6B8E7F;
  --sage-light: #8FAFA2;
  --sage-dark: #567266;
  --cream: #F9F7F4;
  --white: #FFFFFF;
  --bg-secondary: #F2EFEB;
  --bg-tertiary: #E8E4DD;
  --border: #E8E4DD;
  --text: #2D3436;
  --text-secondary: #636E72;
  --text-tertiary: #B2BEC3;
  --accent: #D4A574;
  --error: #E17055;
  --input-bg: #F9F7F4;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--cream);
  color: var(--text);
  line-height: 1.5;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

#app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.screen {
  flex: 1;
  display: none;
  flex-direction: column;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
  padding: 0 20px;
}
.screen.active { display: flex; }

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  position: sticky;
  top: 0;
  background: var(--cream);
  z-index: 10;
}
.app-header h1 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.header-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 22px;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  line-height: 1;
}
.header-btn:active { background: var(--bg-tertiary); }

/* Tab Bar */
.tab-bar {
  display: flex;
  justify-content: space-around;
  padding: 8px 0;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
  background: var(--white);
  border-top: 1px solid var(--border);
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
}
.tab-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
  padding: 4px 16px;
  border-radius: 8px;
  transition: color 0.15s;
}
.tab-btn.active { color: var(--sage); }
.tab-btn svg { width: 22px; height: 22px; }
.tab-bar + .screen-spacer { height: 70px; }

/* Buttons */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  transition: transform 0.1s, opacity 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; pointer-events: none; }
.btn-primary { background: var(--sage); color: white; }
.btn-secondary { background: var(--white); color: var(--sage); border: 1px solid var(--border); }
.btn-text { background: transparent; color: var(--sage); }
.btn-danger { background: transparent; color: var(--error); border: 1px solid var(--error); }

/* Inputs */
.input {
  height: 48px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 16px;
  font-size: 15px;
  background: var(--input-bg);
  color: var(--text);
  width: 100%;
  outline: none;
}
.input:focus { border-color: var(--sage); }
.textarea {
  min-height: 100px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  background: var(--input-bg);
  color: var(--text);
  width: 100%;
  resize: vertical;
  font-family: inherit;
  line-height: 1.5;
  outline: none;
}
.textarea:focus { border-color: var(--sage); }

/* Cards */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}

/* Landing Screen */
.landing-screen {
  justify-content: center;
  align-items: center;
  min-height: 100dvh;
  gap: 16px;
  padding-top: 0;
}
.landing-icon { font-size: 40px; color: var(--sage); margin-bottom: 4px; }
.landing-title { font-size: 28px; font-weight: 700; }
.landing-subtitle { color: var(--text-secondary); font-size: 15px; margin-bottom: 24px; }
.landing-actions { width: 100%; display: flex; flex-direction: column; gap: 12px; }

/* Auth Screen */
.auth-screen {
  justify-content: center;
  min-height: 100dvh;
  gap: 12px;
}
.auth-title { font-size: 24px; font-weight: 700; text-align: center; margin-bottom: 8px; }
.auth-toggle { text-align: center; font-size: 13px; color: var(--sage); cursor: pointer; margin-top: 4px; }
.auth-back { text-align: center; font-size: 13px; color: var(--text-secondary); cursor: pointer; margin-top: 8px; }
.auth-error {
  text-align: center;
  font-size: 13px;
  color: var(--error);
  min-height: 18px;
}

/* Today Screen */
.today-date {
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-top: 40px;
}
.today-status {
  text-align: center;
  color: var(--text-secondary);
  margin: 8px 0 32px;
  font-size: 14px;
}
.today-entry-preview {
  margin-top: 16px;
}
.today-entry-preview .card { margin-bottom: 12px; }
.entry-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.entry-text {
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
}
.cost-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-secondary);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* Reflection Form */
.reflection-screen {
  padding-bottom: 100px;
}
.form-group { margin-bottom: 20px; }
.form-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: block;
}
.cost-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.cost-type-btn {
  flex: 1;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--white);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}
.cost-type-btn.active {
  background: var(--sage);
  color: white;
  border-color: var(--sage);
}
.cost-value-input {
  width: 80px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 12px;
  font-size: 14px;
  background: var(--input-bg);
  color: var(--text);
  text-align: center;
  outline: none;
}

/* History Screen */
.history-list { display: flex; flex-direction: column; gap: 12px; padding-bottom: 80px; }
.history-card { cursor: pointer; }
.history-card:active { transform: scale(0.98); transition: transform 0.1s; }
.history-date {
  font-size: 13px;
  font-weight: 600;
  color: var(--sage);
  margin-bottom: 6px;
}
.history-preview {
  font-size: 14px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Week Screen */
.week-toggle {
  display: flex;
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 3px;
  margin-bottom: 16px;
}
.week-toggle-btn {
  flex: 1;
  height: 36px;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  background: transparent;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.week-toggle-btn.active {
  background: var(--white);
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.week-section { margin-bottom: 20px; }
.week-section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.week-entry { margin-bottom: 12px; }
.week-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.keyword-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
}
.week-summary-card {
  margin-bottom: 20px;
  padding-bottom: 80px;
}
.pattern-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.pattern-item:last-child { border-bottom: none; }

/* Settings Screen */
.settings-section { margin-bottom: 24px; }
.settings-section-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 2px;
}
.settings-row:first-of-type { border-radius: var(--radius-sm) var(--radius-sm) 0 0; }
.settings-row:last-of-type { border-radius: 0 0 var(--radius-sm) var(--radius-sm); margin-bottom: 0; }
.settings-row:only-of-type { border-radius: var(--radius-sm); }
.settings-label { font-size: 15px; }
.settings-value { font-size: 15px; color: var(--text-secondary); }
.settings-value.highlight { color: var(--sage); font-weight: 600; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
}
.empty-state-icon { font-size: 40px; margin-bottom: 12px; opacity: 0.5; }
.empty-state-text { font-size: 15px; }

/* Divider */
.divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 20px 0;
}
.divider-line { flex: 1; height: 1px; background: var(--border); }
.divider-text { font-size: 13px; color: var(--text-tertiary); }

/* Loading */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Safe area padding */
.safe-top { padding-top: max(16px, env(safe-area-inset-top)); }
.safe-bottom { padding-bottom: max(16px, env(safe-area-inset-bottom)); }