/* Precision Marathon Pace Calculator - Neobrutalism Design with Dark Mode */

/* Global box-sizing */
.precision-marathon-pace-calculator,
.precision-marathon-pace-calculator *,
.precision-marathon-pace-calculator *::before,
.precision-marathon-pace-calculator *::after {
  box-sizing: border-box;
}

/* Main container - 2px border, 8px radius, ultra-compact spacing */
.precision-marathon-pace-calculator {
  position: relative;
  max-width: 900px;
  width: 100%;
  margin: 8px auto;
  padding: 8px;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-container);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', sans-serif;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  line-height: 1.5;

  /* CSS Variables - Light mode (default) */
  --bg-primary: #f5f5f0;
  --bg-secondary: #fff;
  --bg-section: #fff;
  --border-color: #333;
  --text-primary: #222;
  --text-secondary: #555;
  --text-light: #666;
  --color-accent: #3498db;
  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-danger: #e74c3c;
  --color-purple: #9b59b6;
  --color-teal: #1abc9c;
  --shadow-sm: 2px 2px 0 rgba(0,0,0,0.1);
  --shadow-md: 4px 4px 0 rgba(0,0,0,0.15);
  --shadow-lg: 8px 8px 0 rgba(0,0,0,0.15);
  --radius-container: 8px;
  --radius-section: 6px;
  --radius-button: 4px;
  --radius-input: 4px;
  --input-focus-bg: #fffacd;
  --title-color: #2c3e50;
  --title-shadow: 2px 2px 0 rgba(255,255,255,0.5);
  --btn-hover-overlay: rgba(0,0,0,0.1);
  --copy-btn-bg: #fff;
  --copy-btn-hover-bg: #f0f0f0;
}

/* Dark mode - manual toggle */
.precision-marathon-pace-calculator.dark {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-section: #2d2d2d;
  --border-color: #e0e0e0;
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-light: #909090;
  --color-accent: #5dade2;
  --color-success: #52c77a;
  --color-warning: #f5b041;
  --color-danger: #ec7063;
  --color-purple: #af7ac5;
  --color-teal: #48d1cc;
  --shadow-sm: 2px 2px 0 rgba(255,255,255,0.08);
  --shadow-md: 4px 4px 0 rgba(255,255,255,0.12);
  --shadow-lg: 8px 8px 0 rgba(255,255,255,0.12);
  --input-focus-bg: #3a3a3a;
  --title-color: #7fb3d5;
  --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
  --btn-hover-overlay: rgba(255,255,255,0.1);
  --copy-btn-bg: #3a3a3a;
  --copy-btn-hover-bg: #4a4a4a;
}

/* System dark mode auto detection */
@media (prefers-color-scheme: dark) {
  .precision-marathon-pace-calculator:not(.dark):not(.light) {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-section: #2d2d2d;
    --border-color: #e0e0e0;
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-light: #909090;
    --color-accent: #5dade2;
    --color-success: #52c77a;
    --color-warning: #f5b041;
    --color-danger: #ec7063;
    --color-purple: #af7ac5;
    --color-teal: #48d1cc;
    --shadow-sm: 2px 2px 0 rgba(255,255,255,0.08);
    --shadow-md: 4px 4px 0 rgba(255,255,255,0.12);
    --shadow-lg: 8px 8px 0 rgba(255,255,255,0.12);
    --input-focus-bg: #3a3a3a;
    --title-color: #7fb3d5;
    --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
    --btn-hover-overlay: rgba(255,255,255,0.1);
    --copy-btn-bg: #3a3a3a;
    --copy-btn-hover-bg: #4a4a4a;
  }
}

/* Dark mode toggle button */
.dark-mode-toggle {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 6px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  font-size: 17.5px;
  font-weight: 600;
  color: var(--text-primary);
  z-index: 10;
}

.dark-mode-toggle:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.15);
}

.dark-mode-toggle:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* Header */
.header {
  text-align: center;
  padding: 0 0 12px 0;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--border-color);
}

.title {
  font-size: 26px;
  font-weight: 700;
  color: var(--title-color);
  margin: 0 0 6px 0;
  text-shadow: var(--title-shadow);
}

.subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Main grid - 2 columns layout (desktop: input | result, mobile: vertical) */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}

/* Input section (left) */
.input-section {
  background: var(--bg-section);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  padding: 12px;
  box-shadow: var(--shadow-md);
}

/* Result section (right) - always visible */
.result-section {
  background: var(--bg-section);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  padding: 12px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Watermark (only visible during image capture) */
.watermark {
  display: none;
  position: absolute;
  bottom: 8px;
  right: 12px;
  font-size: 12px;
  color: var(--text-light);
  opacity: 0.7;
  font-weight: 500;
  pointer-events: none;
}

.watermark.visible {
  display: block;
}

/* Section title */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  gap: 8px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.section-title svg {
  flex-shrink: 0;
}

/* Save image button */
.btn-save-image {
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 600;
  background: var(--color-purple);
  color: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.btn-save-image svg {
  flex-shrink: 0;
}

.btn-save-image:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.15);
  background: linear-gradient(var(--btn-hover-overlay), var(--btn-hover-overlay)), var(--color-purple);
}

.btn-save-image:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.btn-save-image:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* For input section - keep original style */
.input-section .section-title {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 10px;
}

/* Input group */
.input-group {
  margin-bottom: 12px;
}

.input-group:last-child {
  margin-bottom: 0;
}

.input-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.input-label svg {
  flex-shrink: 0;
}

/* Input fields */
.input-field,
.select-field {
  width: 100%;
  padding: 8px 10px;
  font-size: 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  color: var(--text-primary);
  transition: all 0.2s;
}

.input-field:focus,
.select-field:focus {
  outline: none;
  background: var(--input-focus-bg);
  box-shadow: var(--shadow-sm);
}

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

/* Input with unit */
.input-with-unit {
  display: flex;
  gap: 6px;
}

.input-with-unit .input-field {
  flex: 1;
}

.input-with-unit .select-field {
  width: auto;
  min-width: 80px;
}

/* Radio group */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  padding: 8px 10px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 16px;
  color: var(--text-primary);
  cursor: pointer;
}

.radio-label input[type="radio"] {
  cursor: pointer;
  accent-color: var(--color-accent);
}

/* Preset buttons */
.preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.btn-preset {
  padding: 8px 14px;
  font-size: 16px;
  font-weight: 600;
  background: var(--color-success);
  color: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.btn-preset:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.15);
  background: linear-gradient(var(--btn-hover-overlay), var(--btn-hover-overlay)), var(--color-success);
}

.btn-preset:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* Time inputs */
.time-inputs {
  display: flex;
  gap: 6px;
}

.time-input-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.time-unit {
  font-size: 14px;
  color: var(--text-secondary);
  text-align: center;
}

/* Button group */
.button-group {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.btn {
  flex: 1;
  padding: 10px 16px;
  font-size: 18px;
  font-weight: 600;
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn svg {
  flex-shrink: 0;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border: 1.5px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translate(1px, 1px);
  box-shadow: 3px 3px 0 rgba(0,0,0,0.15);
  background: linear-gradient(var(--btn-hover-overlay), var(--btn-hover-overlay)), var(--color-accent);
}

.btn-primary:active {
  transform: translate(4px, 4px);
  box-shadow: none;
}

.btn-secondary {
  background: var(--color-warning);
  color: #fff;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.15);
  background: linear-gradient(var(--btn-hover-overlay), var(--btn-hover-overlay)), var(--color-warning);
}

.btn-secondary:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* Result display */
.result-display {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  padding: 10px;
  margin-bottom: 12px;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
}

.result-item:not(:last-child) {
  border-bottom: 1px dashed var(--border-color);
}

.result-label {
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 500;
}

.result-value {
  font-size: 22px;
  color: var(--color-accent);
  font-weight: 700;
}

/* Split times */
.split-times {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.split-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-color);
}

.table-wrapper {
  flex: 1;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
}

.split-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.split-table th,
.split-table td {
  padding: 8px 10px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.split-table th {
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 15px;
  position: sticky;
  top: 0;
}

.split-table tbody tr:hover {
  background: var(--input-focus-bg);
}

.split-table .no-data {
  color: var(--text-light);
  font-style: italic;
  padding: 20px;
}

/* Footer */
.footer {
  padding-top: 12px;
  border-top: 2px solid var(--border-color);
}

.notes {
  background: var(--bg-section);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  padding: 10px 12px;
  box-shadow: var(--shadow-sm);
}

.notes-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 6px 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.notes-list {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.notes-list li {
  margin-bottom: 4px;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-section);
  color: var(--text-primary);
  padding: 12px 20px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-button);
  box-shadow: var(--shadow-lg);
  font-size: 16px;
  font-weight: 600;
  opacity: 0;
  transition: all 0.3s;
  z-index: 1000;
  max-width: 90%;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Responsive design - mobile (768px and below) */
@media (max-width: 768px) {
  .precision-marathon-pace-calculator {
    margin: 6px auto;
    padding: 6px;
  }

  .main-grid {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .title {
    font-size: 22px;
  }

  .subtitle {
    font-size: 14px;
  }

  .input-section,
  .result-section {
    padding: 10px;
  }

  .section-title {
    font-size: 17px;
  }

  .input-label {
    font-size: 15px;
  }

  .input-field,
  .select-field {
    font-size: 16px;
  }

  .btn {
    font-size: 16px;
  }

  .result-value {
    font-size: 20px;
  }

  .time-inputs {
    flex-wrap: wrap;
  }

  .time-input-wrapper {
    min-width: calc(50% - 3px);
  }

  .btn-save-image {
    padding: 5px 10px;
    font-size: 13px;
  }

  .btn-save-image span {
    display: none;
  }

  .section-header {
    gap: 6px;
  }
}

/* Responsive design - small mobile (480px and below) */
@media (max-width: 480px) {
  .precision-marathon-pace-calculator {
    border-width: 1px;
  }

  .title {
    font-size: 20px;
  }

  .subtitle {
    font-size: 13px;
  }

  .section-title {
    font-size: 16px;
  }

  .input-label {
    font-size: 14px;
  }

  .input-field,
  .select-field {
    font-size: 15px;
    padding: 7px 9px;
  }

  .btn {
    font-size: 15px;
    padding: 9px 14px;
  }

  .button-group {
    flex-direction: column;
    gap: 6px;
  }

  .time-input-wrapper {
    min-width: 100%;
  }

  .preset-buttons {
    flex-direction: column;
  }

  .btn-preset {
    width: 100%;
  }
}