/* ── Design tokens ── */
:root {
  --primary:       #5b8a52;   /* sage green */
  --primary-dark:  #3d6b42;   /* forest green */
  --primary-light: #eef4ec;   /* pale green */
  --accent:        #e07a54;   /* terracotta */
  --accent-light:  #fdf0ea;   /* pale terracotta */

  --bg:            #f7f4f0;   /* warm cream */
  --surface:       #ffffff;
  --surface-warm:  #fdf8f3;   /* warm white for cards */

  --text:          #2c2a26;
  --text-muted:    #8a8078;
  --text-light:    #b5aca3;

  --border:        #e8e2db;
  --border-focus:  #5b8a52;

  --green:         #4caf7d;
  --green-bg:      #edfaf3;
  --green-border:  #9edcbb;
  --red:           #e05c5c;
  --red-bg:        #fdf0f0;
  --red-border:    #f5b0b0;

  --shadow-sm:  0 1px 4px rgba(44,42,38,0.07);
  --shadow-md:  0 4px 16px rgba(44,42,38,0.09);
  --shadow-lg:  0 8px 40px rgba(44,42,38,0.14);

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  18px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Header ── */
header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 12px rgba(61,107,66,0.35);
}

header h1 { font-size: 1.3rem; font-weight: 700; letter-spacing: -0.2px; }

.btn-today {
  background: rgba(255,255,255,0.18);
  color: white;
  border: 1.5px solid rgba(255,255,255,0.45);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-today:hover { background: rgba(255,255,255,0.3); }

/* ── Layout ── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 24px 16px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

@media (max-width: 800px) {
  .container { grid-template-columns: 1fr; }
}

.left-col { display: flex; flex-direction: column; gap: 16px; }

/* ── Panel ── */
.panel {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.panel-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 14px;
  letter-spacing: 0.1px;
}

/* ── Forms ── */
.form-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }

label { font-size: 0.82rem; color: var(--text-muted); font-weight: 500; }

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

input[type="number"], input[type="date"], select {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  background: var(--surface);
  color: var(--text);
}
input:focus, select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(91,138,82,0.12);
}

.radio-group { display: flex; gap: 12px; }
.radio-group label {
  display: flex; align-items: center; gap: 5px;
  font-size: 0.88rem; cursor: pointer; color: var(--text); font-weight: 400;
}

/* ── Buttons ── */
.btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white; border: none; border-radius: var(--radius-sm);
  padding: 10px 18px; font-size: 0.9rem; font-weight: 600;
  cursor: pointer; width: 100%; transition: opacity 0.2s, transform 0.1s;
  letter-spacing: 0.1px;
}
.btn:hover  { opacity: 0.9; }
.btn:active { transform: scale(0.98); }

.btn-sm { padding: 6px 12px; font-size: 0.8rem; width: auto; border-radius: var(--radius-sm); }

.btn-ghost {
  background: var(--primary-light);
  color: var(--primary);
  border: 1.5px solid #c2d9bc;
  border-radius: var(--radius-sm);
  padding: 4px 10px; font-size: 0.75rem; font-weight: 600;
  cursor: pointer; transition: background 0.15s; white-space: nowrap;
}
.btn-ghost:hover { background: #daecd6; }

/* ── Stats ── */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.stat-card {
  background: var(--surface-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}

.stat-card .sc-label {
  font-size: 0.73rem;
  color: var(--text-light);
  margin-bottom: 5px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.stat-card .sc-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.stat-card .sc-value.green { color: var(--green); }
.stat-card .sc-value.red   { color: var(--red); }

/* ── Chart ── */
.chart-canvas-wrap { position: relative; width: 100%; }
canvas { display: block; width: 100%; }

.chart-legend {
  display: flex;
  gap: 14px;
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.legend-dot {
  width: 10px; height: 10px; border-radius: 2px;
  display: inline-block; margin-right: 4px;
}

/* ── Progress ── */
.stat-row {
  display: flex; justify-content: space-between;
  font-size: 0.85rem; margin-bottom: 6px; color: var(--text-muted);
}
.stat-value { font-weight: 700; color: var(--text); }

.progress-bar-wrap {
  background: var(--border);
  border-radius: 99px; height: 8px;
  overflow: hidden; margin: 8px 0 16px;
}
.progress-bar-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), #8cbf80);
  transition: width 0.5s ease;
}

.insight {
  background: var(--primary-light);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.83rem; line-height: 1.6; color: var(--text);
}
.insight strong { color: var(--primary); }

/* ── BMR result ── */
.result-box {
  background: var(--surface-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px; margin-top: 10px;
  font-size: 0.83rem; line-height: 1.8; display: none;
}
.result-line { display: flex; justify-content: space-between; }
.result-line strong { color: var(--primary); }
.result-note { font-size: 0.73rem; color: var(--text-light); margin-top: 6px; line-height: 1.5; }

/* ── Calendar ── */
.cal-header {
  display: flex; align-items: center;
  justify-content: space-between; margin-bottom: 16px;
}
.cal-header h2 { font-size: 1.05rem; font-weight: 700; color: var(--text); }

.nav-btn {
  background: none; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 6px 12px; cursor: pointer; font-size: 1rem;
  color: var(--text-muted); transition: background 0.15s, border-color 0.15s;
}
.nav-btn:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }

.weekdays {
  display: grid; grid-template-columns: repeat(7, 1fr);
  text-align: center; font-size: 0.72rem; font-weight: 600;
  color: var(--text-light); margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: 0.3px;
}

/* ── Goal Banner ── */
#goalBanner {
  background: linear-gradient(135deg, var(--primary-light), #f0f7ee);
  border: 1.5px solid var(--green-border);
  border-radius: var(--radius-md);
  padding: 14px 16px 12px;
  margin-bottom: 12px;
}

.goal-banner-top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 10px;
}

.goal-banner-streak {
  font-size: 0.92rem; font-weight: 700; color: var(--primary-dark);
}

.goal-banner-pct {
  font-size: 0.82rem; color: var(--text-muted);
}

.goal-bar-track {
  background: #d4edca; border-radius: 99px; height: 10px; overflow: hidden;
  margin-bottom: 8px;
}

.goal-bar-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  transition: width 0.4s ease;
  min-width: 2px;
}

.goal-banner-bottom {
  display: flex; justify-content: space-between;
  font-size: 0.75rem; color: var(--text-muted);
}


.days-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }

.day-cell {
  border-radius: var(--radius-sm); padding: 5px 3px; text-align: center;
  cursor: pointer; min-height: 68px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: flex-start; gap: 2px;
  transition: transform 0.15s, box-shadow 0.15s;
  border: 1.5px solid transparent;
  background: var(--surface-warm);
}
.day-cell:hover { transform: scale(1.05); box-shadow: var(--shadow-md); }
.day-cell.empty { cursor: default; background: transparent; }
.day-cell.empty:hover { transform: none; box-shadow: none; }

.day-num { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }

.day-cell.today .day-num {
  background: var(--accent); color: white; border-radius: 50%;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
}

.day-kcal {
  font-size: 0.68rem; font-weight: 700;
  border-radius: 5px; padding: 1px 4px;
}

.day-weight { font-size: 0.64rem; color: var(--text-light); font-weight: 500; }

.day-cell.deficit { background: var(--green-bg); border-color: var(--green-border); }
.day-cell.deficit .day-kcal { color: var(--green); background: #d4f5e5; }
.day-cell.surplus { background: var(--red-bg); border-color: var(--red-border); }
.day-cell.surplus .day-kcal { color: var(--red); background: #fde0e0; }
.day-cell.zero { background: var(--surface-warm); }

/* ── Tabs ── */
.tab-panel {
  background: var(--surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); overflow: hidden;
  border: 1px solid var(--border);
}
.tab-bar { display: flex; border-bottom: 1.5px solid var(--border); background: var(--surface-warm); }
.tab-btn {
  flex: 1; padding: 12px 4px; font-size: 0.75rem; font-weight: 600;
  color: var(--text-light); background: none; border: none; cursor: pointer;
  transition: color 0.15s, background 0.15s;
  border-bottom: 2.5px solid transparent; margin-bottom: -1.5px;
}
.tab-btn:hover { color: var(--primary); background: var(--primary-light); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); background: var(--surface); }
.tab-content { display: none; padding: 20px; }
.tab-content.active { display: block; }

/* ── Modal ── */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(44,42,38,0.5); z-index: 100;
  align-items: center; justify-content: center;
  backdrop-filter: blur(2px);
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--surface); border-radius: var(--radius-lg); padding: 26px;
  width: min(370px, 95vw); box-shadow: var(--shadow-lg);
  animation: pop 0.2s ease; max-height: 92vh; overflow-y: auto;
  border: 1px solid var(--border);
}
@keyframes pop {
  from { transform: scale(0.88); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.modal h3 { font-size: 1.05rem; margin-bottom: 16px; color: var(--text); font-weight: 700; }
.modal .form-row { gap: 6px; margin-bottom: 10px; }

.modal-btns { display: flex; gap: 10px; margin-top: 8px; }

.btn-cancel {
  flex: 1; background: var(--surface-warm); color: var(--text-muted); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px; font-size: 0.9rem;
  font-weight: 600; cursor: pointer; transition: background 0.15s;
}
.btn-cancel:hover { background: var(--border); }
.btn-save { flex: 2; }

.btn-delete {
  background: var(--red-bg); color: var(--red); border: 1.5px solid var(--red-border);
  border-radius: var(--radius-sm); padding: 10px 14px;
  font-size: 0.85rem; font-weight: 600; cursor: pointer;
  transition: background 0.15s;
}
.btn-delete:hover { background: #fbd5d5; }

/* ── Mode toggle ── */
.mode-toggle {
  display: flex;
  background: var(--surface-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px;
  margin-bottom: 14px;
  gap: 3px;
}
.mode-btn {
  flex: 1; padding: 7px 6px; font-size: 0.8rem; font-weight: 600;
  color: var(--text-muted); background: none; border: none; border-radius: 6px;
  cursor: pointer; transition: all 0.18s;
}
.mode-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white; box-shadow: 0 2px 6px rgba(61,107,66,0.3);
}

/* ── Steps section ── */
.steps-section {
  background: var(--primary-light); border: 1.5px solid #c2d9bc;
  border-radius: var(--radius-md); padding: 12px 14px; margin-bottom: 10px;
}
.steps-title { font-size: 0.82rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.steps-row { display: flex; gap: 8px; align-items: flex-end; }
.steps-row input { flex: 1; }
.steps-result { font-size: 0.8rem; color: var(--text-muted); margin-top: 6px; min-height: 18px; }
.steps-result strong { color: var(--primary); }

.burn-breakdown {
  font-size: 0.8rem; color: var(--text-muted); margin-top: 5px;
  background: var(--green-bg); border-radius: var(--radius-sm); padding: 5px 10px;
  display: none;
}
.burn-breakdown strong { color: var(--green); }

.mode-note { font-size: 0.75rem; color: var(--text-light); margin-top: 5px; line-height: 1.4; }

.divider { border: none; border-top: 1px solid var(--border); margin: 10px 0; }

/* ── Export buttons ── */
.export-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.btn-outline {
  background: var(--surface);
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-light); opacity: 1; }

/* ── Custom file picker ── */
.file-drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  background: var(--surface-warm);
  transition: border-color 0.2s, background 0.2s;
  margin-bottom: 10px;
}
.file-drop-zone:hover { border-color: var(--primary); background: var(--primary-light); }
.file-drop-zone.has-file { border-color: var(--green-border); background: var(--green-bg); }

.file-drop-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
}
.file-drop-zone.has-file .file-drop-label { color: var(--green); }

.file-drop-hint { font-size: 0.75rem; color: var(--text-light); margin-top: 4px; }

/* ── View toggle pill ── */
.view-toggle-pill {
  display: flex;
  background: var(--surface-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
  gap: 2px;
}
.view-pill-btn {
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}
.view-pill-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 1px 4px rgba(61,107,66,0.3);
}

/* ── Week-mode calendar grid ── */
.days-grid.week-mode { grid-template-columns: repeat(7, 1fr); gap: 6px; }
.days-grid.week-mode .day-cell { min-height: 100px; border-radius: var(--radius-md); }

/* ── Meal grid ── */
.intake-section { margin-bottom: 4px; }

.intake-total {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
}

.meal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.meal-cell { display: flex; flex-direction: column; gap: 4px; }