/* Base styles */
* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
  min-height: 100vh;
}

a,
button {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.main {
  max-width: 480px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 1.75rem);
  text-align: center;
}

/* 1. App Tabs Navigation */
.app-tabs {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  padding: 0.75rem 0 0.75rem;
  border-bottom: 1px solid #e5e5e5;
}

.app-tabs a {
  font-size: 1.15rem;
  font-weight: 500;
  color: #999;
  text-decoration: none;
  padding: 0.6rem 0;
  border-bottom: 2px solid transparent;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color 0.2s, border-color 0.2s, transform 0.1s;
}

.app-tabs a:active {
  transform: scale(0.98);
}

.app-tabs a.active {
  font-weight: 600;
  color: #333;
  border-bottom-color: #333;
}

.app-tabs a:not(.active):hover {
  color: #666;
}

/* 2. Hero Input Section */
.hero-input {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.lift-input {
  font-size: 2rem;
  font-weight: 600;
  text-align: center;
  width: min(240px, 80vw);
  padding: 0.9rem 1rem;
  border: 2px solid #ddd;
  border-radius: 12px;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.lift-input:focus {
  outline: none;
  border-color: #007aff;
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
}


.lift-input::placeholder {
  font-size: 1rem;
  font-weight: 400;
  color: #999;
}

@media (max-width: 520px) {
  .lift-input {
    font-size: 2rem;
  }
}

.unit-label {
  font-size: 1.25rem;
  color: #666;
  font-weight: 500;
}

/* Error messages */
.error {
  color: #d32f2f;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

/* 3. Results Row */
.results-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  padding: 0.9rem 0.5rem;
  margin-bottom: 1rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.result-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.result-label {
  font-size: 0.75rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.result-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: #333;
}

/* Remainder coloring */
.remainder-1 { color: #f57c00; }
.remainder-2 { color: #e65100; }
.remainder-3 { color: #d84315; }
.remainder-4 { color: #c62828; }

/* 4. Bar Visualization */
.bar-container {
  display: flex;
  justify-content: center;
  padding: 1rem 0;
}

.bar {
  position: relative;
  width: 100%;
  max-width: 320px;
  background-color: #333;
  height: 4px;
  margin: 90px auto;
}

.bar .side {
  position: absolute;
  width: 50%;
  height: 100px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
}

.bar .left-side {
  right: calc(50% + 50px);
  justify-content: flex-start;
  flex-direction: row-reverse;
}

.bar .right-side {
  left: calc(50% + 50px);
  justify-content: flex-start;
}

.bar .side span {
  width: 10px;
  border: 1px solid #000;
  margin: 0 1px;
  flex-shrink: 0;
}

/* Plate sizes for bar */
.bar .plate-45 {
  height: 90px;
  background-color: #333;
}

.bar .plate-35 {
  height: 70px;
  background-color: #555;
}

.bar .plate-25 {
  height: 50px;
  background-color: #777;
}

.bar .plate-10 {
  height: 25px;
  background-color: #999;
}

.bar .plate-5 {
  height: 20px;
  background-color: #bbb;
}

.bar .plate-2-5 {
  height: 15px;
  background-color: #ddd;
}

.bar .plate-1 {
  height: 12px;
  background-color: #e53935;
}

.bar .plate-0-75 {
  height: 10px;
  background-color: #00acc1;
}

.bar .plate-0-5 {
  height: 8px;
  background-color: #43a047;
}

.bar .plate-0-25 {
  height: 6px;
  background-color: #1e88e5;
}

/* 5. Plates Per Side (chips) */
.plates-section {
  margin: 1rem 0;
}

.plates-heading {
  font-size: 0.875rem;
  font-weight: 600;
  color: #666;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.plates-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.clear-btn {
  background: #f5f5f5;
  color: #666;
  border: 1px solid #ddd;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-size: 0.95rem;
  cursor: pointer;
  min-height: 44px;
  transition: background-color 0.2s, transform 0.1s;
}

.clear-btn:active {
  transform: scale(0.98);
}

.clear-btn:hover {
  background: #eee;
}

.plate-chip {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.85rem;
  min-height: 36px;
  background: #fff;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #333;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.plate-chip:active {
  transform: scale(0.98);
}

.chip-count {
  font-weight: 700;
}

/* Chip colors matching bar plates */
.plate-chip.plate-45 { background: #333; color: #fff; }
.plate-chip.plate-35 { background: #555; color: #fff; }
.plate-chip.plate-25 { background: #777; color: #fff; }
.plate-chip.plate-10 { background: #999; color: #fff; }
.plate-chip.plate-5 { background: #bbb; color: #333; }
.plate-chip.plate-2-5 { background: #ddd; color: #333; }
.plate-chip.plate-1 { background: #e53935; color: #fff; }
.plate-chip.plate-0-75 { background: #00acc1; color: #fff; }
.plate-chip.plate-0-5 { background: #43a047; color: #fff; }
.plate-chip.plate-0-25 { background: #1e88e5; color: #fff; }

/* 6. Settings Section */
.settings-section {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #ddd;
}

.settings-toggle {
  background: #333;
  color: #fff;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
  transition: background-color 0.2s, transform 0.1s;
}

.settings-toggle:active {
  transform: scale(0.98);
}

.settings-toggle:hover {
  background: #444;
}

.settings-toggle.show {
  background: #007aff;
}

/* Modal overlay */
.settings-content {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  padding: 1rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.settings-content.open {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 2rem;
}

.settings-content.open .modal-inner {
  animation: modal-in 0.2s ease;
}

@keyframes modal-in {
  from { transform: translateY(12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-inner {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  text-align: left;
  width: 100%;
  max-width: 400px;
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid #eee;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #666;
  cursor: pointer;
  padding: 0.4rem;
  line-height: 1;
  min-height: 44px;
  min-width: 44px;
}

.modal-close:hover {
  color: #333;
}

.modal-body {
  padding: 1rem;
}

/* Totals row */
.totals-row {
  display: flex;
  justify-content: space-around;
  padding: 0.75rem;
  margin-bottom: 1rem;
  background: #f8f8f8;
  border-radius: 8px;
}

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

.total-label {
  font-size: 0.75rem;
  color: #666;
  display: block;
}

.total-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: #333;
}

/* Setting groups */
.setting-group {
  margin-bottom: 1rem;
}

.setting-group label {
  font-size: 0.875rem;
  color: #333;
}

.setting-heading {
  font-size: 0.875rem;
  font-weight: 600;
  color: #333;
  margin: 0 0 0.5rem;
}

/* Inventory grid */
.inventory-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.inventory-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.inventory-item label {
  width: 2.5rem;
  text-align: right;
  font-size: 0.875rem;
  color: #666;
}

.inventory-item input {
  width: 3.5rem;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  text-align: center;
}

/* Bar weight input */
.setting-group > input[type="number"] {
  width: 4.5rem;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  text-align: center;
  margin-left: 0.5rem;
}

/* Fractional plates */
.fractional-plates {
  display: none;
}

/* Options row */
.options-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #eee;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: #333;
  cursor: pointer;
  min-height: 44px;
}

.checkbox-label input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
}

.clear-amounts {
  background: #f5f5f5;
  color: #666;
  border: 1px solid #ddd;
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  font-size: 0.95rem;
  cursor: pointer;
  min-height: 44px;
  transition: background-color 0.2s, transform 0.1s;
}

.clear-amounts:hover {
  background: #eee;
}

.clear-amounts:active {
  transform: scale(0.98);
}

/* Responsive adjustments */
@media (min-width: 600px) {
  .main {
    padding: 2rem;
  }

  .header {
    font-size: 1.5rem;
    margin-bottom: 2rem;
  }

  .lift-input {
    font-size: 2.5rem;
    width: 250px;
  }

  .bar {
    max-width: 400px;
  }
}

@media (max-width: 520px) {
  .app-tabs {
    gap: 1rem;
  }

  .hero-input {
    flex-direction: column;
    gap: 0.35rem;
  }

  .unit-label {
    font-size: 1rem;
  }

  .results-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .result-item:nth-child(3) {
    grid-column: span 2;
  }

  .clear-btn {
    width: 100%;
  }

  .settings-toggle {
    width: 100%;
  }

  .settings-content.open {
    align-items: flex-end;
    padding-top: 1rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
  }

  .settings-content.open .modal-inner {
    max-width: 100%;
    width: 100%;
    max-height: 85vh;
    border-radius: 18px 18px 0 0;
    animation: sheet-in 0.25s ease;
  }

  .modal-header {
    padding: 1rem 1.25rem;
  }

  .modal-body {
    padding: 1rem 1.25rem 1.5rem;
  }

  .options-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .options-row .clear-amounts {
    width: 100%;
  }

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

@keyframes sheet-in {
  from { transform: translateY(40px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* iOS safe area */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  body {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* Input type number - remove spinners */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="number"] {
  -moz-appearance: textfield;
}

@media (max-width: 520px) {
  input,
  select,
  textarea {
    font-size: 16px;
  }
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.8rem;
  color: #888;
}

.site-footer a {
  color: #666;
  text-decoration: none;
}

.site-footer a:hover {
  color: #333;
  text-decoration: underline;
}

/* Timer Notification Banner */
.timer-notification {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: #34c759;
  color: #fff;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-weight: 500;
  z-index: 2000;
  transform: translateY(-100%);
  transition: transform 0.3s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.timer-notification.show {
  transform: translateY(0);
}

.timer-notification span {
  font-size: 1rem;
}

.timer-notification a,
.timer-notification .go-btn {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  text-decoration: none;
  padding: 0.375rem 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s;
}

.timer-notification a:hover,
.timer-notification .go-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.timer-notification .dismiss-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0 0.25rem;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.timer-notification .dismiss-btn:hover {
  opacity: 1;
}