/*
Theme Name: Hypertrophy Tracker
Theme URI: https://tee4it.com/hypertrophy-tracker
Author: Tee4IT
Author URI: https://tee4it.com
Description: 8-Week Hypertrophy Training Program Tracker  premium dark-mode theme with workout logging, progression tracking, and data persistence.
Version: 1.0.0
License: GPL-2.0+
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: hypertrophy-tracker
Requires at least: 5.0
Requires PHP: 7.4
*/
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ─── Design Tokens ─── */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: rgba(20, 20, 30, 0.85);
  --bg-card-hover: rgba(30, 30, 45, 0.9);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-strong: rgba(255, 255, 255, 0.06);
  --bg-input: rgba(255, 255, 255, 0.05);

  --accent-blue: #00d4ff;
  --accent-green: #00ff88;
  --accent-purple: #a855f7;
  --accent-orange: #ff8c42;
  --accent-red: #ff4466;
  --accent-yellow: #ffd700;

  --gradient-primary: linear-gradient(135deg, #00d4ff, #00ff88);
  --gradient-warm: linear-gradient(135deg, #ff8c42, #ff4466);
  --gradient-cool: linear-gradient(135deg, #a855f7, #00d4ff);
  --gradient-hero: linear-gradient(135deg, #0a0a1a 0%, #0d1117 50%, #0a0a1a 100%);

  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #555570;
  --text-accent: #00d4ff;

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(0, 212, 255, 0.3);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow-blue: 0 0 20px rgba(0, 212, 255, 0.15);
  --shadow-glow-green: 0 0 20px rgba(0, 255, 136, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --sidebar-width: 260px;
  --header-height: 64px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset & Base ─── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background animated mesh */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 255, 136, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(168, 85, 247, 0.02) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ─── Login Screen ─── */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  position: relative;
  z-index: 1;
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 420px;
  animation: fadeSlideUp 0.6s ease;
}

.login-logo {
  text-align: center;
  margin-bottom: 40px;
}

.login-logo .logo-icon {
  font-size: 3.5rem;
  display: block;
  margin-bottom: 16px;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
}

.login-logo h1 {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 6px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}

.login-tabs {
  display: flex;
  margin-bottom: 28px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  padding: 4px;
}

.login-tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
}

.login-tab.active {
  background: var(--bg-glass-strong);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-normal);
  outline: none;
}

.form-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  width: 100%;
  background: var(--gradient-primary);
  color: #0a0a0f;
  padding: 14px;
  font-weight: 700;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-blue);
}

.btn-secondary {
  background: var(--bg-glass-strong);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-glass);
  border-color: var(--border-medium);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.8rem;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  font-size: 1.1rem;
}

.btn-icon:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.login-error {
  color: var(--accent-red);
  font-size: 0.85rem;
  margin-top: 12px;
  text-align: center;
  min-height: 20px;
}

/* ─── App Shell ─── */
.app-shell {
  display: none;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.app-shell.active {
  display: flex;
}

/* ─── Header ─── */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-brand .logo-emoji {
  font-size: 1.5rem;
}

.header-brand h2 {
  font-size: 1.15rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-glass);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #0a0a0f;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.btn-logout {
  padding: 8px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-logout:hover {
  color: var(--accent-red);
  border-color: rgba(255, 68, 102, 0.3);
}

/* ─── Sidebar ─── */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: rgba(14, 14, 22, 0.95);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--border-subtle);
  padding: 20px 12px;
  overflow-y: auto;
  z-index: 90;
  transition: transform var(--transition-slow);
}

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  padding: 0 12px;
  margin-bottom: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-normal);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
  position: relative;
  user-select: none;
}

.nav-item:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.nav-item.active {
  color: var(--accent-blue);
  background: rgba(0, 212, 255, 0.08);
  border-color: rgba(0, 212, 255, 0.15);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--accent-blue);
  border-radius: 0 3px 3px 0;
}

.nav-icon {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
}

.nav-item .week-progress {
  margin-left: auto;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-glass);
  padding: 2px 8px;
  border-radius: 10px;
}

/* ─── Main Content ─── */
.main-content {
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  padding: 28px;
  min-height: calc(100vh - var(--header-height));
  flex: 1;
}

.view {
  display: none;
  animation: fadeIn 0.3s ease;
}

.view.active {
  display: block;
}

/* ─── Page Header ─── */
.page-header {
  margin-bottom: 28px;
}

.page-header h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}

.page-header .subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ─── Dashboard ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition-normal);
}

.stat-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-card .stat-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.stat-card .stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.stat-card .stat-value {
  font-size: 1.6rem;
  font-weight: 800;
}

.stat-card .stat-unit {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-left: 4px;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  opacity: 0.05;
}

.stat-card.blue { border-top: 2px solid var(--accent-blue); }
.stat-card.blue::after { background: var(--accent-blue); }
.stat-card.green { border-top: 2px solid var(--accent-green); }
.stat-card.green::after { background: var(--accent-green); }
.stat-card.purple { border-top: 2px solid var(--accent-purple); }
.stat-card.purple::after { background: var(--accent-purple); }
.stat-card.orange { border-top: 2px solid var(--accent-orange); }
.stat-card.orange::after { background: var(--accent-orange); }

/* Dashboard lift cards */
.lift-progress-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.lift-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition-normal);
}

.lift-card:hover {
  border-color: var(--border-medium);
}

.lift-card .lift-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.lift-card .lift-weight {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.lift-card .lift-weight span {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.lift-bar-track {
  height: 6px;
  background: var(--bg-glass);
  border-radius: 3px;
  overflow: hidden;
}

.lift-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--gradient-primary);
  transition: width 1s ease;
}

/* Week overview grid */
.weeks-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.week-overview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
}

.week-overview-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

.week-overview-card.current {
  border-color: var(--accent-green);
  box-shadow: var(--shadow-glow-green);
}

.week-overview-card .week-num {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.week-overview-card .week-completion {
  font-size: 1.4rem;
  font-weight: 800;
}

.week-overview-card .week-bar {
  height: 4px;
  background: var(--bg-glass);
  border-radius: 2px;
  margin-top: 10px;
  overflow: hidden;
}

.week-overview-card .week-bar-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width 0.8s ease;
}

/* ─── Profile / Inputs ─── */
.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
}

.card:hover {
  border-color: var(--border-medium);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-header h3 {
  font-size: 1rem;
  font-weight: 700;
}

.card-header .card-icon {
  font-size: 1.2rem;
}

.card-body {
  padding: 20px;
}

.profile-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.profile-field:last-child {
  border-bottom: none;
}

.profile-field .field-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.profile-field .field-value {
  font-weight: 600;
}

.profile-field .form-input {
  width: 100px;
  text-align: right;
  padding: 6px 10px;
  font-size: 0.85rem;
}

/* Exercise load table */
.exercise-table-wrap {
  overflow-x: auto;
  margin-top: 16px;
}

.exercise-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.85rem;
}

.exercise-table thead th {
  background: var(--bg-glass-strong);
  padding: 10px 14px;
  text-align: left;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 1;
}

.exercise-table tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.exercise-table tbody tr:hover {
  background: var(--bg-glass);
}

.exercise-table tbody tr:last-child td {
  border-bottom: none;
}

.exercise-table .load-input {
  width: 70px;
  padding: 4px 8px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  text-align: right;
  outline: none;
  transition: var(--transition-fast);
}

.exercise-table .load-input:focus {
  border-color: var(--accent-blue);
}

/* Best sets table */
.best-set-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.85rem;
}

.best-set-table th {
  background: var(--bg-glass-strong);
  padding: 8px 12px;
  text-align: left;
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.best-set-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.best-set-table .e1rm {
  font-weight: 700;
  color: var(--accent-green);
}

/* ─── Week View ─── */
.weekly-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.metric-input-group {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
}

.metric-input-group label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.metric-input-group .form-input {
  width: 100%;
  padding: 8px 10px;
  font-size: 0.9rem;
}

.metric-input-group textarea.form-input {
  min-height: 40px;
  resize: vertical;
}

/* Recovery stars */
.recovery-stars {
  display: flex;
  gap: 4px;
}

.recovery-star {
  font-size: 1.3rem;
  cursor: pointer;
  transition: var(--transition-fast);
  opacity: 0.3;
  user-select: none;
}

.recovery-star.filled {
  opacity: 1;
  filter: drop-shadow(0 0 4px var(--accent-yellow));
}

.recovery-star:hover {
  transform: scale(1.2);
}

/* Day cards */
.day-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition-normal);
}

.day-card:hover {
  border-color: var(--border-medium);
}

.day-header {
  padding: 16px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  transition: var(--transition-normal);
}

.day-header:hover {
  background: var(--bg-glass);
}

.day-header h3 {
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.day-header .day-icon {
  font-size: 1.2rem;
}

.day-header .expand-icon {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
}

.day-card.expanded .day-header .expand-icon {
  transform: rotate(180deg);
}

.day-progress {
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.day-progress-bar {
  width: 60px;
  height: 4px;
  background: var(--bg-glass);
  border-radius: 2px;
  overflow: hidden;
}

.day-progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width var(--transition-slow);
}

.day-body {
  display: none;
  padding: 0 20px 20px;
}

.day-card.expanded .day-body {
  display: block;
  animation: slideDown 0.3s ease;
}

/* Exercise sections */
.exercise-section {
  margin-bottom: 16px;
}

.exercise-section-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 8px;
}

/* Warm-up / cool-down checklist */
.checklist-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.checklist-item:hover {
  color: var(--text-primary);
}

.checklist-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-medium);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  transition: var(--transition-normal);
  flex-shrink: 0;
}

.checklist-item.checked .checklist-checkbox {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #0a0a0f;
}

.checklist-item.checked .checklist-text {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Exercise row (working sets) */
.exercise-row {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 10px;
  transition: var(--transition-normal);
}

.exercise-row:hover {
  border-color: var(--border-medium);
}

.exercise-row-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.exercise-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.exercise-cue {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-top: 2px;
}

.exercise-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  background: var(--bg-glass);
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.meta-tag .meta-icon {
  font-size: 0.7rem;
}

.exercise-sets {
  display: flex;
  gap: 8px;
  align-items: center;
  margin: 12px 0;
  flex-wrap: wrap;
}

.set-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.set-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.set-input {
  width: 52px;
  height: 40px;
  padding: 4px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  outline: none;
  transition: var(--transition-normal);
}

.set-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.15);
}

.set-input.hit-range {
  border-color: var(--accent-green);
  background: rgba(0, 255, 136, 0.05);
}

.set-input.below-range {
  border-color: var(--accent-orange);
  background: rgba(255, 140, 66, 0.05);
}

.exercise-row-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  flex-wrap: wrap;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
}

.exercise-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.exercise-stat {
  display: flex;
  flex-direction: column;
}

.exercise-stat .stat-lbl {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.exercise-stat .stat-val {
  font-size: 0.9rem;
  font-weight: 700;
}

.exercise-stat .stat-val.good {
  color: var(--accent-green);
}

.exercise-stat .stat-val.pending {
  color: var(--text-secondary);
}

.exercise-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.done-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
}

.done-toggle:hover {
  border-color: var(--accent-green);
}

.done-toggle.completed {
  background: rgba(0, 255, 136, 0.1);
  border-color: rgba(0, 255, 136, 0.3);
  color: var(--accent-green);
}

.notes-input {
  width: 180px;
  padding: 6px 10px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.8rem;
  outline: none;
  transition: var(--transition-fast);
}

.notes-input:focus {
  border-color: var(--accent-blue);
}

.notes-input::placeholder {
  color: var(--text-muted);
}

/* Weekly checkpoint */
.weekly-checkpoint {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-top: 16px;
}

.weekly-checkpoint h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Export bar */
.export-bar {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

/* ─── Animations ─── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ─── Sidebar Overlay (mobile) ─── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 85;
}

.sidebar-overlay.active {
  display: block;
}

/* ─── Toast Notification ─── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  background: var(--bg-card);
  border: 1px solid var(--accent-green);
  border-radius: var(--radius-md);
  color: var(--accent-green);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: fadeSlideUp 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.error {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding: 20px 16px;
  }

  .menu-toggle {
    display: block;
  }

  .header-brand h2 {
    font-size: 1rem;
  }

  .user-name {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .weekly-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .lift-progress-grid {
    grid-template-columns: 1fr;
  }

  .exercise-row-top {
    flex-direction: column;
  }

  .exercise-row-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .notes-input {
    width: 100%;
  }

  .profile-grid {
    grid-template-columns: 1fr;
  }

  .weeks-overview {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 500px) {
  html { font-size: 14px; }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .stat-card { padding: 14px; }
  .stat-card .stat-value { font-size: 1.3rem; }

  .exercise-sets {
    gap: 6px;
  }

  .set-input {
    width: 46px;
    height: 36px;
    font-size: 0.9rem;
  }

  .weeks-overview {
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }

  .weekly-metrics {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .login-card { padding: 24px; }

  .page-header h1 { font-size: 1.4rem; }
}

/* Utility */
.text-green { color: var(--accent-green); }
.text-blue { color: var(--accent-blue); }
.text-orange { color: var(--accent-orange); }
.text-red { color: var(--accent-red); }
.text-muted { color: var(--text-muted); }
.fw-700 { font-weight: 700; }
.mt-12 { margin-top: 12px; }
.mb-12 { margin-bottom: 12px; }
.mb-24 { margin-bottom: 24px; }
.hidden { display: none !important; }