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

:root {
  --bg: #000000;
  --bg-card: rgba(28, 28, 30, 0.8);
  --bg-card-solid: #1c1c1e;
  --bg-hover: rgba(44, 44, 46, 0.6);
  --bg-elevated: #2c2c2e;
  --text: #f5f5f7;
  --text-secondary: #98989d;
  --text-tertiary: #636366;
  --separator: rgba(84, 84, 88, 0.35);
  --radius: 16px;
  --radius-sm: 12px;

  /* Strain: deep plum through purple to red */
  --strain-1: #1a0f1e;
  --strain-2: #2d1640;
  --strain-3: #4a1e5e;
  --strain-4: #7b2d7b;
  --strain-5: #e94560;

  /* Recovery: red through yellow to green */
  --recovery-1: #2a1a1a;
  --recovery-2: #4a2a1a;
  --recovery-3: #6b5a1a;
  --recovery-4: #3a7a2a;
  --recovery-5: #30d158;

  /* Sleep: deep indigo to cyan */
  --sleep-1: #0d0d2b;
  --sleep-2: #1a1a4e;
  --sleep-3: #1e3a6e;
  --sleep-4: #1a6a8a;
  --sleep-5: #32d9cb;
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', sans-serif;
  font-size: 15px;
  line-height: 1.47;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  padding: 1.5rem;
  max-width: 960px;
  margin: 0 auto;
}

/* Header */
header {
  margin-bottom: 2rem;
  padding: 0 0.25rem;
}

header h1 {
  font-size: 2.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.subtitle {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  margin-top: 0.25rem;
}

/* Summary row */
.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.summary-item {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-sm);
  padding: 0.875rem 1rem;
}

.summary-label {
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-tertiary);
  margin-bottom: 0.25rem;
}

.summary-value {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.summary-sub {
  font-size: 0.6875rem;
  color: var(--text-secondary);
  margin-top: 0.125rem;
}

/* Controls */
.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding: 0 0.25rem;
}

.range-picker {
  display: flex;
  background: var(--bg-card);
  border-radius: 10px;
  padding: 2px;
  gap: 1px;
}

.range-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.375rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.range-btn:hover {
  color: var(--text);
}

.range-btn.active {
  background: var(--bg-elevated);
  color: var(--text);
}

.sort-picker {
  background: var(--bg-card);
  border: none;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.375rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2398989d' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.625rem center;
  padding-right: 2rem;
}

.sort-picker:hover {
  color: var(--text);
}

/* Cards */
.cards {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius);
  padding: 1rem 1.125rem;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.875rem;
}

.card-header h2 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
}

.card-icon {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.strain-icon {
  background: rgba(255, 69, 58, 0.18);
  color: #ff453a;
}

.recovery-icon {
  background: rgba(48, 209, 88, 0.18);
  color: #30d158;
}

.sleep-icon {
  background: rgba(10, 132, 255, 0.18);
  color: #0a84ff;
}

/* Heatmap */
.heatmap-months {
  display: flex;
  gap: 3px;
  margin-bottom: 0.375rem;
  overflow: hidden;
}

.heatmap-month-label {
  font-size: 0.625rem;
  color: var(--text-tertiary);
  text-align: left;
  flex-shrink: 0;
}

.heatmap {
  display: flex;
  gap: 3px;
  overflow-x: auto;
  scrollbar-width: none;
}

.heatmap::-webkit-scrollbar {
  display: none;
}

.heatmap-week {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
}

.heatmap-day {
  width: 13px;
  height: 13px;
  border-radius: 2px;
  background: var(--bg-elevated);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.heatmap-day:hover {
  transform: scale(1.4);
  z-index: 2;
  position: relative;
}

.heatmap-day[data-level="1"] { background: var(--level-1); }
.heatmap-day[data-level="2"] { background: var(--level-2); }
.heatmap-day[data-level="3"] { background: var(--level-3); }
.heatmap-day[data-level="4"] { background: var(--level-4); }
.heatmap-day[data-level="5"] { background: var(--level-5); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 1rem;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #161618;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 24px;
  padding: 2rem 1.75rem;
  width: 100%;
  max-width: 440px;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.92) translateY(16px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 32px 100px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  scrollbar-width: none;
}

.modal-card::-webkit-scrollbar { display: none; }

.modal-overlay.open .modal-card {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.06);
  border: none;
  color: var(--text-tertiary);
  font-size: 1.125rem;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: all 0.15s ease;
}

.modal-close:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.1);
}

.modal-date {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  letter-spacing: 0.01em;
}

/* Hero rings -- value centered inside */
.modal-rings {
  display: flex;
  justify-content: center;
  gap: 1.75rem;
  margin-bottom: 2rem;
}

.modal-ring-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.modal-ring-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-ring-wrap svg {
  display: block;
  filter: drop-shadow(0 0 8px var(--ring-glow, transparent));
}

.modal-ring-inner {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.modal-ring-val {
  font-size: 1.125rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.modal-ring-label {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Detail sections as cards */
.modal-sections {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.modal-section {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 14px;
  padding: 1rem 1.125rem;
}

.modal-section-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.modal-section-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.modal-section-title {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.modal-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.4375rem 0;
  font-size: 0.8125rem;
}

.modal-row + .modal-row {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

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

.modal-row-val {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

/* Tooltip */
.tooltip {
  position: fixed;
  background: var(--bg-card-solid);
  border: 1px solid var(--separator);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.875rem;
  font-size: 0.8125rem;
  color: var(--text);
  pointer-events: none;
  z-index: 100;
  display: none;
  min-width: 170px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 0.5px rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
}

.tooltip-date {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  padding-bottom: 0.375rem;
  border-bottom: 1px solid var(--separator);
}

.tooltip-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.25rem;
  padding: 0.1875rem 0;
}

.tooltip-label {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.tooltip-val {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: 0.8125rem;
}

/* Feed */
.feed {
  padding: 0 0.25rem;
}

.feed-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.feed-header h2 {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.feed-count {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.feed-list {
  display: flex;
  flex-direction: column;
}

.feed-month {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 1.25rem 0 0.625rem;
}

.feed-month:first-child {
  padding-top: 0;
}

.feed-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--separator);
  transition: background 0.2s ease;
  border-radius: 8px;
  margin: 0 -0.5rem;
  cursor: pointer;
}

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

.feed-item:active {
  background: var(--bg-hover);
}

.feed-item-highlight {
  background: var(--bg-hover);
}

.feed-left {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  min-width: 0;
}

.feed-date {
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.feed-details {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.feed-detail {
  color: var(--text-tertiary);
  font-size: 0.75rem;
}

.feed-detail strong {
  color: var(--text-secondary);
  font-weight: 600;
}

.feed-rings {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.feed-ring-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring {
  display: block;
}

.feed-ring-label {
  position: absolute;
  font-size: 0.5625rem;
  font-weight: 700;
  color: var(--text-tertiary);
  letter-spacing: 0;
}

/* Lock screen */
.lock-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 1rem;
}

.lock-icon {
  color: var(--text-tertiary);
  margin-bottom: 0.5rem;
}

.lock-text {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.lock-form {
  display: flex;
  gap: 0.5rem;
}

.lock-input {
  background: var(--bg-card-solid);
  border: 1px solid var(--separator);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9375rem;
  padding: 0.625rem 1rem;
  width: 180px;
  outline: none;
  transition: border-color 0.15s ease;
}

.lock-input:focus {
  border-color: rgba(255, 255, 255, 0.15);
}

.lock-btn {
  background: var(--text);
  color: var(--bg);
  border: none;
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.lock-btn:hover {
  opacity: 0.85;
}

.lock-error {
  color: #ff453a;
  font-size: 0.75rem;
  height: 1rem;
}

/* PR badges */
.feed-date-row {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.feed-pr-badge {
  font-size: 0.5625rem;
  font-weight: 700;
  color: #ffd60a;
  background: rgba(255, 214, 10, 0.12);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  letter-spacing: 0.04em;
}

.feed-best-badge {
  font-size: 0.5625rem;
  font-weight: 700;
  color: #bf5af2;
  background: rgba(191, 90, 242, 0.12);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  letter-spacing: 0.04em;
}

.modal-pr-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  color: #ffd60a;
  margin-left: 0.5rem;
}

.modal-best-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  color: #bf5af2;
  background: rgba(191, 90, 242, 0.12);
  padding: 0.125rem 0.5rem;
  border-radius: 5px;
  margin-left: 0.5rem;
}

.modal-day-score {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-bottom: 1.5rem;
}

.modal-day-score strong {
  color: var(--text);
  font-weight: 700;
  font-size: 0.875rem;
}

.modal-pr-tag {
  font-size: 0.5625rem;
  font-weight: 700;
  color: #ffd60a;
  background: rgba(255, 214, 10, 0.12);
  padding: 0.0625rem 0.3125rem;
  border-radius: 3px;
  margin-left: 0.375rem;
  letter-spacing: 0.03em;
  vertical-align: middle;
}

/* Percentile bars */
.modal-row-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-pct {
  width: 40px;
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 2px;
  overflow: hidden;
}

.modal-pct-bar {
  height: 100%;
  border-radius: 2px;
  transition: width 0.3s ease;
}

.modal-pct-label {
  font-size: 0.625rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  min-width: 28px;
  text-align: right;
}

/* Color accents */
.recovery-green { color: #30d158; }
.recovery-yellow { color: #ffd60a; }
.recovery-red { color: #ff453a; }

.strain-accent { color: #ff453a; }
.sleep-accent { color: #0a84ff; }

/* Responsive */
@media (max-width: 640px) {
  body {
    padding: 1rem 0.75rem;
  }

  header {
    margin-bottom: 1.5rem;
  }

  header h1 {
    font-size: 1.625rem;
  }

  /* Summary */
  .summary {
    gap: 0.5rem;
  }

  .summary-item {
    padding: 0.75rem 0.75rem;
  }

  .summary-value {
    font-size: 1.25rem;
  }

  .summary-sub {
    font-size: 0.625rem;
  }

  /* Controls */
  .controls {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0.5rem;
  }

  .range-picker {
    flex: 1;
    min-width: 0;
  }

  .range-btn {
    padding: 0.375rem 0.375rem;
    font-size: 0.6875rem;
    flex: 1;
    text-align: center;
  }

  .sort-picker {
    flex-shrink: 0;
    font-size: 0.6875rem;
    padding: 0.375rem 0.5rem;
    padding-right: 1.5rem;
    background-position: right 0.375rem center;
  }

  /* Cards */
  .cards {
    gap: 0.5rem;
    margin-bottom: 1.5rem;
  }

  .card {
    padding: 0.875rem;
    border-radius: 14px;
  }

  .card-header {
    margin-bottom: 0.625rem;
  }

  .card-header h2 {
    font-size: 0.8125rem;
  }

  .card-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
  }

  .card-icon svg {
    width: 13px;
    height: 13px;
  }

  /* Heatmap */
  .heatmap {
    gap: 2px;
  }

  .heatmap-week {
    gap: 2px;
  }

  .heatmap-day {
    width: 10px;
    height: 10px;
  }

  .heatmap-months {
    gap: 2px;
    margin-bottom: 0.25rem;
  }

  .heatmap-month-label {
    font-size: 0.5rem;
  }

  /* Modal */
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }

  .modal-card {
    max-width: 100%;
    max-height: 92vh;
    border-radius: 20px 20px 0 0;
    padding: 1.5rem 1.25rem 2rem;
    transform: translateY(100%);
  }

  .modal-overlay.open .modal-card {
    transform: translateY(0);
  }

  .modal-rings {
    gap: 1.25rem;
    margin-bottom: 1.5rem;
  }

  .modal-ring-val {
    font-size: 1rem;
  }

  .modal-section {
    padding: 0.875rem;
    border-radius: 12px;
  }

  .modal-row {
    font-size: 0.75rem;
    padding: 0.375rem 0;
  }

  /* Feed */
  .feed-header h2 {
    font-size: 1.125rem;
  }

  .feed-item {
    padding: 0.625rem 0.375rem;
    margin: 0 -0.375rem;
  }

  .feed-date {
    font-size: 0.8125rem;
  }

  .feed-details {
    gap: 0.625rem;
  }

  .feed-detail {
    font-size: 0.6875rem;
  }

  .feed-rings {
    gap: 0.375rem;
  }

  .ring {
    width: 30px !important;
    height: 30px !important;
  }

  .feed-ring-label {
    font-size: 0.5rem;
  }

  /* Tooltip hidden on mobile -- use tap for modal instead */
  .tooltip {
    display: none !important;
  }

  .heatmap-day:hover {
    transform: none;
  }
}

@media (max-width: 380px) {
  .summary {
    grid-template-columns: 1fr;
    gap: 0.375rem;
  }

  .summary-item {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
  }

  .summary-label {
    margin-bottom: 0;
    min-width: 60px;
  }

  .summary-value {
    font-size: 1.125rem;
  }

  .summary-sub {
    margin-top: 0;
    margin-left: auto;
  }

  .modal-rings {
    gap: 0.75rem;
  }
}

/* Safe area for notched phones */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .modal-card {
    padding-bottom: calc(2rem + env(safe-area-inset-bottom));
  }

  body {
    padding-bottom: env(safe-area-inset-bottom);
  }
}