/* IronLog PWA — Gradient Fitness UI */
/* Gradient: #051937 → #004d7a → #008793 → #00bf72 → #a8eb12 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-page: #faf9f7;
  --bg-card: #ffffff;
  --bg-surface: #f3f1ee;
  --bg-hover: #eeebe7;
  --bg-active: #e8e4df;
  --text-primary: #1a1a1c;
  --text-secondary: #5c5a56;
  --text-tertiary: #8c8984;
  --text-quaternary: #b5b2ad;
  --accent: #008793;
  --accent-dark: #006d78;
  --accent-light: #00a3b0;
  --accent-glow: rgba(0,135,147,0.12);
  --green: #00bf72;
  --green-dark: #009a5c;
  --green-bg: rgba(0,191,114,0.1);
  --amber: #f59e0b;
  --amber-bg: rgba(245,158,11,0.08);
  --lime: #a8eb12;
  --lime-bg: rgba(168,235,18,0.1);
  --purple: #051937;
  --purple-bg: rgba(5,25,55,0.06);
  --border-subtle: rgba(0,0,0,0.06);
  --border-standard: rgba(0,0,0,0.1);
  --border-strong: rgba(0,0,0,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
  --transition-fast: 0.15s ease;
  --transition-smooth: 0.25s cubic-bezier(0.4,0,0.2,1);
}

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

html {
  font-size:16px;
  -webkit-tap-highlight-color:transparent;
  scroll-behavior:smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(to right top, #051937, #004d7a, #008793, #00bf72, #a8eb12);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height:100vh; min-height:100dvh;
  -webkit-font-smoothing:antialiased;
  letter-spacing: -0.01em;
  line-height: 1.5;
  position: relative;
}
/* Soften gradient with a white overlay for readability */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.15);
  z-index: -1;
}

/* ===== INTRO BANNER ===== */
.intro-banner {
  background: linear-gradient(135deg, rgba(0,135,147,0.15) 0%, rgba(0,191,114,0.12) 50%, rgba(168,235,18,0.08) 100%);
  padding: 28px 24px;
  text-align: center;
  border-bottom: 2px solid rgba(0,135,147,0.2);
  margin: 0;
}
.intro-banner h2 {
  font-size: 1.25rem;
  font-weight: 800;
  color: #051937;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}
.intro-steps {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.intro-step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}
.intro-step .step-num {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--green));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,135,147,0.3);
}

/* ===== HOME HEADER ===== */
.home-header {
  padding: 36px 24px 12px;
  text-align: center;
}
.home-header .logo {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--accent) 0%, var(--green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.home-header .tagline {
  color: var(--text-tertiary);
  margin-top: 4px;
  font-size: 0.88rem;
  font-weight: 400;
}

/* ===== STATS BAR ===== */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 28px;
  padding: 20px 24px;
  margin: 8px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-subtle);
  animation: fadeInUp 0.4s ease;
}
.stat {
  text-align: center;
}
.stat-val {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--accent), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.68rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-top: 2px;
}

/* ===== DIFFICULTY GROUP ===== */
.diff-group {
  padding: 0 16px;
  max-width: 640px;
  margin: 0 auto;
}
.diff-group + .diff-group {
  margin-top: 4px;
}
.diff-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 12px 8px 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.diff-label::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: currentColor;
}
.diff-label.beginner { color: var(--green); }
.diff-label.intermediate { color: var(--amber); }
.diff-label.advanced { color: var(--accent); }

/* ===== TEMPLATE CARDS ===== */
.template-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.template-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.template-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  border-radius: 0 2px 2px 0;
  transition: all var(--transition-smooth);
}
.template-card.beginner::before { background: var(--green); }
.template-card.intermediate::before { background: var(--amber); }
.template-card.advanced::before { background: var(--accent); }
.template-card:active {
  transform: scale(0.985);
  box-shadow: var(--shadow-md);
}
@media (hover: hover) {
  .template-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-standard);
  }
}

.tc-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.tc-badge {
  font-size: 0.68rem;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tc-badge.beginner {
  background: var(--green-bg);
  color: var(--green-dark);
}
.tc-badge.intermediate {
  background: var(--amber-bg);
  color: var(--amber);
}
.tc-badge.advanced {
  background: var(--accent-glow);
  color: var(--accent-dark);
}
.tc-source {
  font-size: 0.7rem;
  color: var(--text-quaternary);
  margin-left: auto;
  font-weight: 500;
}
.template-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.tc-desc {
  font-size: 0.84rem;
  color: var(--text-tertiary);
  line-height: 1.5;
  margin-bottom: 14px;
}
.tc-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.74rem;
  color: var(--text-quaternary);
  margin-bottom: 12px;
  font-weight: 500;
}
.tc-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.tc-days-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* ===== BUTTONS ===== */
.btn {
  display: block;
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  background: var(--bg-surface);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  font-family: inherit;
  letter-spacing: -0.01em;
  -webkit-tap-highlight-color: transparent;
}
.btn:active {
  transform: scale(0.98);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--green));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 12px rgba(0,135,147,0.3);
}
.btn-primary:active {
  box-shadow: 0 1px 6px rgba(0,135,147,0.4);
}
.btn-start {
  padding: 10px 14px;
  font-size: 0.82rem;
  text-align: left;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
}
.btn-start:active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-giant {
  padding: 18px;
  font-size: 1.05rem;
  margin-top: 16px;
  letter-spacing: -0.02em;
}
.btn-finish {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 12px rgba(0,191,114,0.3);
}
.btn-sm {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-standard);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  min-width: 42px;
  font-family: inherit;
  transition: all var(--transition-fast);
}
.btn-sm:active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== BOTTOM NAV ===== */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  display: flex;
  background: rgba(255,255,255,0.9);
  border-top: 1px solid var(--border-subtle);
  padding: 6px 8px;
  padding-bottom: max(6px, env(safe-area-inset-bottom));
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-btn {
  flex: 1;
  padding: 12px 8px;
  border: none;
  background: none;
  color: var(--text-tertiary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius-md);
  font-family: inherit;
  letter-spacing: -0.01em;
  transition: all var(--transition-fast);
}
.nav-btn:active,
.nav-btn.active {
  color: var(--accent);
  background: var(--accent-glow);
}

/* ===== WORKOUT SCREEN ===== */
.workout-header {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  background: rgba(255,255,255,0.9);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn-back {
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 8px 12px 8px 0;
  transition: color var(--transition-fast);
}
.btn-back:active { color: var(--text-primary); }
.wh-info {
  flex: 1;
  margin-left: 4px;
  min-width: 0;
}
.wh-template {
  display: block;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.wh-focus {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.wh-progress {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
  margin-left: 12px;
}

/* ===== EXERCISE CARD ===== */
.exercise-card {
  padding: 20px;
  max-width: 520px;
  margin: 0 auto;
  animation: fadeInUp 0.3s ease;
}
.ex-gif {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
}
.ex-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}
.ex-equip {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-bottom: 20px;
  font-weight: 500;
}

/* ===== SETS TRACKER ===== */
.sets-tracker {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  justify-content: center;
}
.set-dot {
  width: 42px; height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--bg-surface);
  color: var(--text-quaternary);
  border: 2px solid transparent;
  transition: all var(--transition-smooth);
}
.set-dot.done {
  background: var(--green-bg);
  color: var(--green-dark);
  border-color: var(--green);
}
.set-dot.current {
  background: var(--accent-glow);
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  animation: pulse 2s ease infinite;
}

/* ===== INPUTS ===== */
.input-group {
  margin-bottom: 20px;
}
.input-row {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  gap: 6px;
}
.input-label {
  width: 52px;
  font-size: 0.82rem;
  color: var(--text-tertiary);
  font-weight: 500;
}
.btn-group {
  display: flex;
  gap: 4px;
  flex: 1;
}
.num-input {
  width: 64px;
  padding: 10px 6px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-standard);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1.15rem;
  text-align: center;
  font-weight: 700;
  font-family: inherit;
  letter-spacing: -0.02em;
  transition: all var(--transition-fast);
}
.num-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.unit {
  font-size: 0.78rem;
  color: var(--text-quaternary);
  width: 36px;
  text-align: center;
  font-weight: 600;
}

.set-complete {
  text-align: center;
  padding: 20px;
  color: var(--green);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ===== REST OVERLAY ===== */
.rest-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeIn 0.25s ease;
}
.rest-card {
  text-align: center;
}
.rest-label {
  color: var(--text-tertiary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 700;
}
.rest-timer {
  font-size: 6rem;
  font-weight: 900;
  letter-spacing: -0.06em;
  background: linear-gradient(135deg, var(--accent), var(--green), var(--lime));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin: 20px 0;
  animation: pulse 2s ease infinite;
}

/* ===== RESULT SCREEN ===== */
.result-card {
  max-width: 480px;
  margin: 0 auto;
  padding: 36px 24px;
  text-align: center;
  animation: fadeInUp 0.4s ease;
}
.result-badge {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--green-dark);
  background: var(--green-bg);
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.result-title {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 4px;
}
.result-meta {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  margin-bottom: 28px;
}
.result-stats {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-bottom: 28px;
  padding: 22px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-subtle);
}
.rstat { text-align: center; }
.rval {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--accent), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.rlab {
  font-size: 0.68rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}
.result-exercises {
  text-align: left;
  margin-bottom: 24px;
}
.re-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.re-item:last-child {
  border-bottom: none;
}
.re-name {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.re-sets {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}
.result-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.result-footer {
  font-size: 0.72rem;
  color: var(--text-quaternary);
  margin-top: 12px;
}

/* ===== FOOTER ===== */
.app-footer {
  text-align: center;
  padding: 24px 20px 100px;
  font-size: 0.7rem;
  color: var(--text-quaternary);
  letter-spacing: 0.02em;
  font-weight: 500;
}
.app-footer a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.app-footer a:active { color: var(--accent); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

/* ===== LOADING ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  color: var(--text-tertiary);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}
.loading::after {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 8px;
  animation: pulse 1s ease infinite;
}