/* ================================================
   GYM PR TRACKER v2 - Design System
   Apple-inspired, Mobile-first, Liquid Glass
   ================================================ */

/* -------- CSS Variables / Theming -------- */
:root {
  /* Light Mode (Default) */
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #e8e8ed;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.7);

  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;

  --border-color: rgba(0, 0, 0, 0.08);
  --shadow-color: rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);

  --accent: #000000;
  --accent-soft: rgba(0, 0, 0, 0.08);
  --success: #34c759;
  --warning: #ff9500;
  --danger: #ff3b30;

  /* Blur effects */
  --blur-amount: 20px;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-base: 15px;
  --font-size-md: 17px;
  --font-size-lg: 20px;
  --font-size-xl: 28px;
  --font-size-2xl: 34px;
  --font-size-3xl: 48px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Safe areas for mobile */
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --nav-height: 80px;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #1c1c1e;
  --bg-tertiary: #2c2c2e;
  --bg-card: rgba(28, 28, 30, 0.8);
  --bg-glass: rgba(28, 28, 30, 0.7);

  --text-primary: #ffffff;
  --text-secondary: #98989d;
  --text-tertiary: #636366;

  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);

  --accent: #ffffff;
  --accent-soft: rgba(255, 255, 255, 0.1);
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* -------- Mobile App Container -------- */
.app-container {
  max-width: 430px;
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
  background-color: var(--bg-primary);
  overflow: hidden;
}

/* -------- Page System -------- */
.page {
  display: none;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--spacing-lg);
  padding-top: calc(var(--safe-area-top) + var(--spacing-lg));
  padding-bottom: calc(var(--nav-height) + var(--safe-area-bottom) + var(--spacing-lg));
  opacity: 0;
  transform: translateX(20px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.page.active {
  display: block;
  opacity: 1;
  transform: translateX(0);
}

.page.slide-out {
  opacity: 0;
  transform: translateX(-20px);
}

/* -------- Typography -------- */
.text-xs {
  font-size: var(--font-size-xs);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-base {
  font-size: var(--font-size-base);
}

.text-md {
  font-size: var(--font-size-md);
}

.text-lg {
  font-size: var(--font-size-lg);
}

.text-xl {
  font-size: var(--font-size-xl);
}

.text-2xl {
  font-size: var(--font-size-2xl);
}

.text-3xl {
  font-size: var(--font-size-3xl);
}

.font-normal {
  font-weight: var(--font-weight-normal);
}

.font-medium {
  font-weight: var(--font-weight-medium);
}

.font-semibold {
  font-weight: var(--font-weight-semibold);
}

.font-bold {
  font-weight: var(--font-weight-bold);
}

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

.text-secondary {
  color: var(--text-secondary);
}

.text-tertiary {
  color: var(--text-tertiary);
}

h1,
.h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.5px;
  line-height: 1.2;
}

h2,
.h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.3px;
  line-height: 1.25;
}

h3,
.h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
}

/* -------- Cards (Liquid Glass) -------- */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card:active {
  transform: scale(0.98);
}

.card-elevated {
  box-shadow: var(--shadow-md);
}

.card-lg {
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
}

/* -------- Buttons -------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  font-family: inherit;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-primary);
}

.btn-secondary {
  background-color: var(--accent-soft);
  color: var(--text-primary);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-primary);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-md);
  min-height: 56px;
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn-icon-lg {
  width: 56px;
  height: 56px;
}

.btn-full {
  width: 100%;
}

/* -------- Inputs -------- */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.input-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
}

.input {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-md);
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

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

/* Input error state */
.input.input-error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.15);
}

/* Shake animation for validation */
@keyframes shake {

  0%,
  100% {
    transform: translateX(0);
  }

  20% {
    transform: translateX(-8px);
  }

  40% {
    transform: translateX(8px);
  }

  60% {
    transform: translateX(-6px);
  }

  80% {
    transform: translateX(6px);
  }
}

.shake {
  animation: shake 0.4s ease-out;
}

.input-lg {
  padding: var(--spacing-lg);
  font-size: var(--font-size-lg);
  text-align: center;
  font-weight: var(--font-weight-semibold);
}

/* Inline input for sets */
.input-inline {
  width: 80px;
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

/* -------- Toggle Switch -------- */
.toggle-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
}

.toggle {
  position: relative;
  width: 51px;
  height: 31px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.toggle.active {
  background-color: var(--accent);
}

.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 27px;
  height: 27px;
  background-color: white;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: transform var(--transition-fast);
}

.toggle.active::after {
  transform: translateX(20px);
}

/* -------- Segmented Control -------- */
.segmented-control {
  display: flex;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 2px;
}

.segment {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-align: center;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: calc(var(--radius-md) - 2px);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.segment.active {
  background-color: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* -------- Bottom Navigation (Pill Style) -------- */
.bottom-nav {
  position: fixed;
  bottom: calc(var(--safe-area-bottom) + var(--spacing-lg));
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--bg-glass);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  z-index: 100;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 44px;
  gap: 2px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-tertiary);
  background: transparent;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-item.active {
  color: var(--text-primary);
  background-color: var(--accent-soft);
}

.nav-item svg {
  width: 22px;
  height: 22px;
}

.nav-item-add {
  width: 52px;
  height: 52px;
  background-color: var(--accent);
  color: var(--bg-primary);
  border-radius: var(--radius-full);
  margin: 0 var(--spacing-sm);
}

.nav-item-add:active {
  transform: scale(0.92);
}

/* -------- Progress Bar -------- */
.progress-bar {
  width: 100%;
  height: 4px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background-color: var(--accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

/* -------- Badge -------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  background-color: var(--accent-soft);
  color: var(--text-primary);
}

.badge-success {
  background-color: rgba(52, 199, 89, 0.15);
  color: var(--success);
}

.badge-warning {
  background-color: rgba(255, 149, 0, 0.15);
  color: var(--warning);
}

/* -------- Exercise Card -------- */
.exercise-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.exercise-card:active {
  transform: scale(0.98);
  background: var(--bg-tertiary);
}

.exercise-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.exercise-name {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.exercise-meta {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.exercise-pr {
  text-align: right;
}

.exercise-pr-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.exercise-pr-label {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

/* -------- Set Row -------- */
.set-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.set-number {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

.set-inputs {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.set-separator {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--text-tertiary);
}

.set-delete {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--danger);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.set-delete:hover {
  opacity: 1;
}

/* -------- Cardio Inputs -------- */
.cardio-inputs {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.cardio-field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.cardio-input-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.cardio-input-row .input {
  flex: 1;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  text-align: center;
  padding: var(--spacing-lg);
}

.cardio-unit {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  min-width: 40px;
}

/* -------- History Item -------- */
.history-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.history-date {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
}

.history-sets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.history-set {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}

/* -------- Onboarding -------- */
.onboarding-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--spacing-xl);
  padding-top: calc(var(--safe-area-top) + var(--spacing-2xl));
  padding-bottom: calc(var(--safe-area-bottom) + var(--spacing-xl));
}

.onboarding-step {
  display: none;
  flex-direction: column;
  flex: 1;
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.onboarding-step.active {
  display: flex;
  opacity: 1;
  transform: translateX(0);
}

.onboarding-header {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: var(--spacing-lg);
}

.onboarding-icon {
  font-size: 80px;
  margin-bottom: var(--spacing-md);
}

.onboarding-logo {
  max-width: 80%;
  width: 260px;
  height: auto;
  object-fit: contain;
}

.onboarding-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.onboarding-subtitle {
  font-size: var(--font-size-md);
  color: var(--text-secondary);
  max-width: 280px;
}

.onboarding-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl) 0;
}

.onboarding-footer {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* -------- Empty State -------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-2xl);
  gap: var(--spacing-md);
}

.empty-state-icon {
  font-size: 64px;
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.empty-state-text {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

/* -------- Charts (Canvas) -------- */
.chart-container {
  width: 100%;
  height: 200px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}

/* -------- Animations -------- */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(100%);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.animate-fade-in {
  animation: fadeIn var(--transition-normal) ease forwards;
}

.animate-slide-up {
  animation: slideUp var(--transition-slow) ease forwards;
}

/* -------- Utility Classes -------- */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-xs {
  gap: var(--spacing-xs);
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.gap-xl {
  gap: var(--spacing-xl);
}

.mt-auto {
  margin-top: auto;
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.text-center {
  text-align: center;
}

.w-full {
  width: 100%;
}

.hidden {
  display: none;
}

/* -------- Page-specific Header -------- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.back-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.back-btn:active {
  transform: scale(0.92);
  background: var(--bg-tertiary);
}

.back-btn svg {
  width: 20px;
  height: 20px;
  color: var(--text-primary);
}

.more-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
}

/* -------- Section Headers -------- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* -------- PR Highlight -------- */
.pr-highlight {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border-radius: var(--radius-xl);
  text-align: center;
  gap: var(--spacing-xs);
}

.pr-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  letter-spacing: -1px;
}

.pr-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
}

/* -------- Overload Suggestion -------- */
.overload-suggestion {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(255, 149, 0, 0.1);
  border: 1px solid rgba(255, 149, 0, 0.2);
  border-radius: var(--radius-md);
}

.overload-icon {
  font-size: 24px;
}

.overload-text {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

/* -------- Modal/Sheet -------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 200;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-sheet {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  width: 100%;
  max-width: 430px;
  max-height: 90vh;
  background: var(--bg-primary);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--spacing-lg);
  padding-bottom: calc(var(--safe-area-bottom) + var(--spacing-lg));
  transition: transform var(--transition-normal);
  z-index: 201;
  overflow-y: auto;
}

.modal-overlay.active .modal-sheet {
  transform: translateX(-50%) translateY(0);
}

.modal-handle {
  width: 36px;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  margin: 0 auto var(--spacing-lg);
}

/* -------- Date Picker -------- */
.date-input {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-md);
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.date-input::-webkit-calendar-picker-indicator {
  filter: invert(0.5);
}

[data-theme="dark"] .date-input::-webkit-calendar-picker-indicator {
  filter: invert(1);
}

/* -------- Muscle Group Card -------- */
.muscle-group-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.muscle-group-card:active {
  transform: scale(0.98);
  background: var(--bg-tertiary);
}

.muscle-group-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  border-radius: var(--radius-md);
}

.muscle-group-icon-sm {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  border-radius: var(--radius-sm);
}

.muscle-group-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.muscle-group-name {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.muscle-group-count {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.muscle-group-pr {
  text-align: right;
}

/* -------- Muscle Group Picker -------- */
.muscle-group-picker {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.muscle-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.muscle-chip:active {
  transform: scale(0.95);
}

.muscle-chip.active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}

.muscle-chip.active .muscle-icon {
  filter: invert(1);
}

/* Muscle group icons */
.muscle-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  border-radius: 4px;
}

.chip-icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.muscle-group-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.muscle-group-icon-sm img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

/* Margin utility */
.mt-md {
  margin-top: var(--spacing-md);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

/* -------- Profile Avatar -------- */
.profile-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.profile-avatar:active {
  transform: scale(0.95);
}

/* -------- Profile Page -------- */
.profile-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-lg) 0;
}

.profile-avatar-lg {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}

/* -------- Stats Grid -------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  padding: 0 var(--spacing-md);
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  text-align: center;
  border: 1px solid var(--border-color);
}

.stat-value {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.stat-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

/* -------- PR Item -------- */
.pr-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-color);
}

.pr-item:last-child {
  border-bottom: none;
}

.pr-name {
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.pr-value {
  font-weight: var(--font-weight-bold);
  color: var(--accent);
}

/* -------- Rest Timer -------- */
.rest-timer-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  text-align: center;
  color: white;
}

.rest-timer-display {
  margin-bottom: var(--spacing-md);
}

.rest-timer-value {
  display: block;
  font-size: 64px;
  font-weight: var(--font-weight-bold);
  line-height: 1;
}

.rest-timer-label {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

.rest-timer-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
}

.rest-timer-main {
  min-width: 100px;
  background: white;
  color: #667eea;
}

.rest-timer-main:active {
  background: rgba(255, 255, 255, 0.9);
}

.rest-timer-card .btn-icon {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: none;
}

.rest-timer-card.running {
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.02);
  }
}

/* -------- Previous Workout Sets -------- */
.prev-set-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) 0;
}

.prev-set-number {
  width: 20px;
  font-weight: var(--font-weight-medium);
  color: var(--text-tertiary);
}

/* -------- Floating Add Button -------- */
.fab-container {
  position: fixed;
  bottom: calc(env(safe-area-inset-bottom) + 24px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
}

.fab {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.fab:active {
  transform: scale(0.95);
}

.fab svg {
  width: 28px;
  height: 28px;
}

/* -------- Install Banner -------- */
.install-banner {
  margin: 0 var(--spacing-lg);
  margin-top: calc(var(--safe-area-top) + var(--spacing-md));
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--radius-xl);
  color: white;
  position: relative;
  animation: slideDown 0.4s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.install-banner-close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.install-banner-close:active {
  background: rgba(255, 255, 255, 0.3);
}

.install-banner-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.install-banner-icon {
  font-size: 40px;
  flex-shrink: 0;
}

.install-banner-text {
  flex: 1;
}

.install-banner-text strong {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
}

.install-banner-text p {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin: 0;
}

.install-banner-steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.15);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
}

.install-step {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.install-step-number {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.install-step-icon {
  font-size: 16px;
  flex-shrink: 0;
}