/* GymOS — Global Stylesheet */
/* Font: Inter from Google Fonts — include in each HTML head */

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

:root {
  --green:       #1A9E72;
  --green-light: #E6F7F1;
  --green-mid:   #0F6E50;
  --text:        #111111;
  --text-2:      #555555;
  --text-3:      #999999;
  --border:      #E4E4E4;
  --bg:          #F7F7F5;
  --surface:     #FFFFFF;
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   14px;
  --shadow:      0 1px 4px rgba(0,0,0,0.06);
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ── */
.page-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  width: 100%;
  max-width: 420px;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
}

.main-content {
  margin-left: 220px;
  flex: 1;
  padding: 32px 36px;
  width: calc(100% - 220px);
}

/* ── Responsive Layout Grids ── */
.layout-grid-2col {
  display: grid;
  grid-template-columns: 2.5fr 1.5fr;
  gap: 20px;
  align-items: flex-start;
}

.layout-grid-equal {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.layout-grid-3to2 {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 16px;
}

@media (max-width: 1024px) {
  .layout-grid-2col, .layout-grid-equal, .layout-grid-3to2 {
    grid-template-columns: 1fr !important;
    gap: 16px;
  }
}

/* ── Logo ── */
.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 20px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.logo-icon {
  width: 28px; height: 28px;
  background: var(--green);
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
}
.logo-icon svg { width: 16px; height: 16px; fill: #fff; }
.logo-name { font-size: 15px; font-weight: 600; letter-spacing: -0.02em; color: var(--text); }

/* ── Nav ── */
.nav-section { padding: 0 12px; margin-bottom: 4px; }
.nav-label { font-size: 10px; font-weight: 600; letter-spacing: 0.08em; color: var(--text-3); text-transform: uppercase; padding: 0 8px; margin-bottom: 6px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.12s, color 0.12s;
  cursor: pointer;
}
.nav-item:hover { background: var(--bg); color: var(--text); }
.nav-item.active { background: var(--green-light); color: var(--green-mid); }
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; }

.sidebar-footer { margin-top: auto; padding: 16px 12px 0; border-top: 1px solid var(--border); }
.user-row { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--radius-sm); }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--green-light); display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 600; color: var(--green-mid); flex-shrink: 0; }
.user-name { font-size: 13px; font-weight: 500; }
.user-meta { font-size: 11px; color: var(--text-3); }

/* ── Typography ── */
.page-title { font-size: 20px; font-weight: 600; letter-spacing: -0.02em; color: var(--text); }
.page-sub { font-size: 13px; color: var(--text-2); margin-top: 3px; }
.section-label { font-size: 11px; font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: var(--text-3); margin-bottom: 12px; }

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.card + .card { margin-top: 12px; }

/* ── Form elements ── */
.form-group { margin-bottom: 16px; }
.form-group:last-of-type { margin-bottom: 0; }
label.field-label { display: block; font-size: 12px; font-weight: 500; color: var(--text-2); margin-bottom: 6px; }

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 13.5px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
}
textarea { height: auto; padding: 10px 12px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(26,158,114,0.12);
}

.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 40px; padding: 0 18px;
  border-radius: var(--radius-sm);
  font-size: 13.5px; font-weight: 500; font-family: inherit;
  cursor: pointer; border: none; transition: opacity 0.15s, background 0.15s;
  text-decoration: none;
}
.btn-primary { background: var(--green); color: #fff; width: 100%; }
.btn-primary:hover { opacity: 0.88; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg); }
.btn-sm { height: 32px; padding: 0 12px; font-size: 12.5px; }
.btn-icon { width: 32px; height: 32px; padding: 0; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-2); }

/* ── Chips / Tags ── */
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.chip {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  font-size: 13px; font-weight: 500;
  cursor: pointer; color: var(--text-2);
  background: var(--surface);
  transition: all 0.12s;
  user-select: none;
}
.chip:hover { border-color: var(--green); color: var(--green); }
.chip.active { background: var(--green); color: #fff; border-color: var(--green); }

/* ── Badges ── */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px; font-weight: 600;
}
.badge-green { background: var(--green-light); color: var(--green-mid); }
.badge-gray { background: #F0F0EE; color: #666; }
.badge-orange { background: #FEF3E2; color: #9A5B0A; }
.badge-red { background: #FEECEC; color: #9B2525; }

/* ── Metric tiles ── */
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 24px; }
.metric-tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; }
.metric-val { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; color: var(--text); line-height: 1.2; }
.metric-val sup { font-size: 13px; font-weight: 500; }
.metric-lbl { font-size: 11px; color: var(--text-3); margin-top: 3px; }
.metric-delta { font-size: 11px; font-weight: 500; margin-top: 4px; }
.delta-up { color: var(--green); }
.delta-down { color: #D44; }

/* ── Progress bar ── */
.prog-bar { height: 6px; background: #EEEEED; border-radius: 3px; overflow: hidden; }
.prog-fill { height: 100%; background: var(--green); border-radius: 3px; }

/* ── Step indicator ── */
.steps { display: flex; align-items: center; gap: 0; margin-bottom: 28px; }
.step-item { display: flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 500; color: var(--text-3); }
.step-item.active { color: var(--green); }
.step-item.done { color: var(--text-2); }
.step-dot { width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 600; background: var(--surface); flex-shrink: 0; }
.step-item.active .step-dot { border-color: var(--green); background: var(--green); color: #fff; }
.step-item.done .step-dot { border-color: var(--green); background: var(--green-light); color: var(--green); }
.step-line { flex: 1; height: 1px; background: var(--border); min-width: 24px; }

/* ── Auth specific ── */
.auth-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 28px; }
.auth-logo-icon { width: 34px; height: 34px; background: var(--green); border-radius: 9px; display: flex; align-items: center; justify-content: center; }
.auth-logo-icon svg { width: 18px; height: 18px; fill: #fff; }
.auth-title { font-size: 17px; font-weight: 600; letter-spacing: -0.02em; }
.auth-title span { color: var(--text-3); font-weight: 400; }

.divider { display: flex; align-items: center; gap: 12px; margin: 18px 0; color: var(--text-3); font-size: 12px; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }

.auth-link { font-size: 13px; color: var(--text-2); text-align: center; margin-top: 16px; }
.auth-link a { color: var(--green); font-weight: 500; text-decoration: none; }

/* ── Meal card ── */
.meal-row { display: flex; align-items: flex-start; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.meal-row:last-child { border-bottom: none; padding-bottom: 0; }
.meal-time-col { width: 72px; flex-shrink: 0; padding-top: 2px; }
.meal-time-label { font-size: 10px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-3); }
.meal-name { font-size: 13.5px; font-weight: 500; }
.meal-desc { font-size: 12.5px; color: var(--text-2); margin-top: 2px; line-height: 1.5; }
.macro-pills { display: flex; gap: 6px; margin-top: 7px; flex-wrap: wrap; }
.macro-pill { font-size: 11px; font-weight: 500; padding: 2px 8px; background: var(--bg); border-radius: 10px; color: var(--text-2); }

/* ── Exercise row ── */
.exercise-row { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.exercise-row:last-child { border-bottom: none; }
.ex-num { width: 22px; height: 22px; border-radius: 50%; background: var(--bg); border: 1px solid var(--border); font-size: 10px; font-weight: 600; color: var(--text-3); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.ex-info { flex: 1; }
.ex-name { font-size: 13.5px; font-weight: 500; }
.ex-detail { font-size: 12px; color: var(--text-3); margin-top: 1px; }
.ex-sets { font-size: 12px; font-weight: 600; color: var(--green); background: var(--green-light); padding: 3px 10px; border-radius: 10px; flex-shrink: 0; }
.ex-check { width: 20px; height: 20px; border-radius: 4px; border: 1.5px solid var(--border); cursor: pointer; flex-shrink: 0; display: flex; align-items: center; justify-content: center; transition: all 0.12s; }
.ex-check.checked { background: var(--green); border-color: var(--green); }
.ex-check.checked svg { display: block; }
.ex-check svg { display: none; width: 11px; height: 11px; fill: #fff; }

/* ── Day strip ── */
.day-strip { display: flex; gap: 6px; margin-bottom: 20px; }
.day-cell { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 8px 4px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface); cursor: pointer; transition: all 0.12s; }
.day-cell:hover { border-color: var(--green); }
.day-cell.active { background: var(--green); border-color: var(--green); }
.day-cell .d-name { font-size: 10px; font-weight: 600; color: var(--text-3); letter-spacing: 0.04em; }
.day-cell .d-num { font-size: 15px; font-weight: 600; color: var(--text); }
.day-cell.active .d-name, .day-cell.active .d-num { color: #fff; }
.day-cell .d-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--green-light); }
.day-cell.active .d-dot { background: rgba(255,255,255,0.5); }
.day-cell.done .d-dot { background: var(--green); }

/* ── Progress chart bar ── */
.bar-chart { display: flex; align-items: flex-end; gap: 6px; height: 100px; }
.bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.bar { width: 100%; border-radius: 4px 4px 0 0; background: var(--green-light); transition: background 0.12s; }
.bar.filled { background: var(--green); }
.bar-label { font-size: 10px; color: var(--text-3); }

/* ── Streak banner ── */
.streak-bar { display: flex; align-items: center; gap: 10px; background: #FFFBF0; border: 1px solid #F5E5B8; border-radius: var(--radius-md); padding: 11px 16px; margin-bottom: 20px; }
.streak-bar svg { width: 18px; height: 18px; flex-shrink: 0; }
.streak-text { font-size: 13px; color: #7A5A10; }
.streak-text strong { color: #5A3D00; }

/* ── Page header ── */
.page-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 24px; }
.page-header-actions { display: flex; gap: 8px; }

@media (max-width: 1024px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 20px 16px; width: 100% !important; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .row-2, .row-3 { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .metrics-grid { grid-template-columns: 1fr !important; }
}