:root {
  --bg: #0e0e0e;
  --surface: #161616;
  --surface2: #1f1f1f;
  --border: #2a2a2a;
  --accent: #e8ff3c;
  --accent2: #ff5c3c;
  --text: #f0f0f0;
  --muted: #666;
  --green: #3cff8f;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* NOISE OVERLAY */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.4;
}

.header {
  border-bottom: 1px solid var(--border);
  padding: 24px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
  gap: 16px;
}

.logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 28px;
  letter-spacing: 4px;
  color: var(--accent);
}

.logo span { color: var(--text); }

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

.user-box {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-name {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.date-display {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.nav {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
}

.nav-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 18px;
  cursor: pointer;
  transition: all 0.2s;
  border-right: 1px solid var(--border);
}

.nav-btn:last-child { border-right: none; }

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

.nav-btn:hover:not(.active) {
  background: var(--surface2);
  color: var(--text);
}

.container { max-width: 960px; margin: 0 auto; padding: 40px; }

/* VIEWS */
.view { display: none; animation: fadeIn 0.3s ease; }
.view.active { display: block; }

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

/* AUTH */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 36px 32px;
}

.auth-tabs {
  display: flex;
  border: 1px solid var(--border);
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  color: var(--muted);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 2px;
  padding: 10px;
  cursor: pointer;
  text-transform: uppercase;
  transition: all 0.2s;
}

.auth-tab.active { background: var(--accent); color: var(--bg); }

.auth-submit { width: 100%; margin-top: 24px; }

.auth-error {
  color: var(--accent2);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 1px;
  margin-top: 14px;
  min-height: 16px;
  text-align: center;
}

/* TODAY */
.section-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 48px;
  letter-spacing: 4px;
  line-height: 1;
  margin-bottom: 32px;
}

.section-title .accent { color: var(--accent); }

.today-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.today-head .section-title { margin-bottom: 0; }

.day-nav {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.exercise-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 40px;
}

.exercise-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s;
}

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

.exercise-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.3s;
  transform-origin: bottom;
}

.exercise-card:hover::before { transform: scaleY(1); }

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}

.exercise-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 26px;
  letter-spacing: 2px;
}

.exercise-goal {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1px;
  text-align: right;
}

.exercise-goal .goal-num {
  display: block;
  font-size: 22px;
  color: var(--text);
  letter-spacing: 0;
  margin-top: 2px;
}

.progress-bar-wrap {
  height: 4px;
  background: var(--border);
  margin-bottom: 12px;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  right: 0;
  top: -3px;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
}

.progress-bar-fill.done { background: var(--green); }
.progress-bar-fill.done::after { background: var(--green); }

.progress-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.progress-done {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
}

.progress-done .num {
  font-size: 32px;
  font-weight: 600;
  color: var(--accent);
  display: block;
  line-height: 1;
}

.progress-done.done-all .num { color: var(--green); }

.progress-pct {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
  text-align: right;
}

.sets-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
  min-height: 28px;
}

.set-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 3px 8px;
  letter-spacing: 1px;
  animation: popIn 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.set-badge:hover { border-color: var(--accent2); color: var(--accent2); }

@keyframes popIn { from { transform: scale(0.7); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.add-set-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.set-input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 16px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
}

.set-input:focus { border-color: var(--accent); }
.set-input::placeholder { color: var(--muted); }

.btn {
  background: var(--accent);
  color: var(--bg);
  border: none;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 16px;
  letter-spacing: 2px;
  padding: 10px 20px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn:hover { background: #fff; }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: wait; }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 1px;
  padding: 8px 14px;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
}

.btn-ghost:hover { color: var(--accent); border-color: var(--accent); }

.btn-danger {
  background: transparent;
  color: var(--accent2);
  border: 1px solid var(--accent2);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 1px;
  padding: 6px 12px;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
}

.btn-danger:hover { background: var(--accent2); color: var(--bg); }

.done-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--green);
  border: 1px solid var(--green);
  padding: 3px 8px;
  text-transform: uppercase;
  animation: popIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* EXERCISES MANAGEMENT */
.exercises-list { display: grid; gap: 12px; margin-bottom: 32px; }

.ex-manage-item {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: border-color 0.2s;
}

.ex-manage-item:hover { border-color: var(--border); }

.ex-manage-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 22px;
  letter-spacing: 2px;
}

.ex-manage-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
  margin-top: 3px;
}

.add-exercise-form {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 32px;
}

.form-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 20px;
  letter-spacing: 3px;
  margin-bottom: 16px;
  color: var(--accent);
}

.form-row { display: flex; gap: 12px; }

.form-input {
  flex: 1;
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus { border-color: var(--accent); }
.form-input::placeholder { color: var(--muted); }

.form-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

.form-group { flex: 1; }

/* HISTORY */
.history-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  align-items: center;
  flex-wrap: wrap;
}

.filter-select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  padding: 12px 14px;
  outline: none;
  cursor: pointer;
  color-scheme: dark;
}

.filter-select:focus { border-color: var(--accent); }

.history-day {
  margin-bottom: 32px;
}

.history-day-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.history-date {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 20px;
  letter-spacing: 3px;
  color: var(--accent);
}

.history-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.history-entry {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 16px 20px;
  margin-bottom: 8px;
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 16px;
  align-items: center;
}

.history-ex-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 20px;
  letter-spacing: 2px;
}

.history-sets {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.history-set-chip {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  background: var(--surface2);
  padding: 2px 6px;
}

.history-total {
  text-align: right;
}

.history-total .num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 28px;
  font-weight: 600;
  color: var(--accent);
  display: block;
}

.history-total .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.history-pct-bar {
  width: 60px;
}

.h-bar {
  height: 3px;
  background: var(--border);
  margin-bottom: 4px;
}

.h-bar-fill {
  height: 100%;
  background: var(--accent);
}

.h-bar-fill.done { background: var(--green); }

.h-pct {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  text-align: right;
}

.entry-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px dashed var(--border);
}

.empty-state .big { font-size: 48px; margin-bottom: 12px; opacity: 0.3; }

.export-bar {
  display: flex;
  margin-bottom: 20px;
  gap: 10px;
  flex-wrap: wrap;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

/* INLINE ENTRY EDITOR */
.entry-editor {
  grid-column: 1 / -1;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 14px;
  margin-top: 4px;
}

.entry-editor .form-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.entry-editor .form-group { flex: 0 1 auto; }

.entry-editor .form-input {
  padding: 8px 10px;
  font-size: 13px;
}

/* TOAST */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: var(--accent);
  color: var(--bg);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 1px;
  padding: 12px 20px;
  z-index: 9999;
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toast.show { transform: translateY(0); opacity: 1; }
.toast.error { background: var(--accent2); }

.chart-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.chart-dates {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr;
  gap: 16px;
}

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 24px;
}

.chart-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.chart-canvas {
  position: relative;
  height: 320px;
}

.chart-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat-item {
  border: 1px solid var(--border);
  background: var(--surface2);
  padding: 12px;
}

.stat-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.stat-value {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 22px;
  color: var(--accent);
  line-height: 1;
}

.stat-sub {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
  margin-top: 6px;
}

@media (max-width: 640px) {
  .header { padding: 16px 20px; flex-wrap: wrap; gap: 12px; }
  .container { padding: 24px 20px; }
  .form-row { flex-direction: column; }
  .section-title { font-size: 36px; }
  .chart-grid { grid-template-columns: 1fr; }
  .chart-card { padding: 18px; }
  .today-head { flex-direction: column; align-items: flex-start; }
  .history-entry { grid-template-columns: 1fr auto; }
  .history-pct-bar { display: none; }
  .entry-actions { grid-column: 1 / -1; flex-direction: row; }
}