/* ============================================
   ATHLETICS ANNUAL PLAN
   Track-inspired aesthetic with bold typography
   ============================================ */

:root {
  /* Track colors */
  --track-surface: #1a1a1a;
  --track-line: rgba(255, 255, 255, 0.08);
  --lane-marker: rgba(255, 255, 255, 0.03);

  /* Brand colors - inspired by timing displays */
  --accent-gold: #f5a623;
  --accent-orange: #ff6b35;
  --accent-red: #e74c3c;

  /* Functional colors */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.4);

  /* Phase colors */
  --phase-general-prep: #ff9900;
  --phase-special-prep: #ffd700;
  --phase-competition: #00cc66;
  --phase-taper: #888888;

  /* Training load colors */
  --load-4: #e74c3c;
  --load-3: #f39c12;
  --load-2: #f1c40f;
  --load-1: #2ecc71;
  --load-0: #ecf0f1;

  /* Surface colors */
  --surface-dark: #0d0d0d;
  --surface-card: rgba(255, 255, 255, 0.04);
  --surface-elevated: rgba(255, 255, 255, 0.08);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-focus: var(--accent-gold);

  /* Typography */
  --font-display: 'Bebas Neue', Impact, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Inter', -apple-system, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Sizing */
  --max-width: 800px;
  --input-height: 56px;
}

/* ============================================
   RESET & BASE
   ============================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--track-surface);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

/* ============================================
   LANDING PAGE
   ============================================ */

.landing {
  position: relative;
  overflow: hidden;
}

/* Track lane decoration */
.track-lines {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
  z-index: 0;
}

.lane {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--track-line) 20%,
    var(--track-line) 80%,
    transparent 100%
  );
}

.lane:nth-child(odd) {
  opacity: 0.5;
}

/* Landing container */
.landing-container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-xl);
  gap: var(--space-3xl);
}

/* Header */
.landing-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.logo-mark {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
}

.logo-lanes {
  display: flex;
  gap: 4px;
  transform: skewX(-12deg);
}

.logo-lanes span {
  width: 8px;
  height: 40px;
  background: var(--accent-gold);
  border-radius: 2px;
}

.logo-lanes span:nth-child(2) {
  height: 32px;
  background: var(--accent-orange);
}

.logo-lanes span:nth-child(3) {
  height: 24px;
  background: var(--accent-red);
}

.site-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 12vw, 6rem);
  line-height: 0.85;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.tagline {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Invite section */
.invite-section {
  width: 100%;
  max-width: 400px;
}

.invite-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.invite-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-align: center;
}

.input-group {
  display: flex;
  gap: 2px;
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.input-group:focus-within {
  border-color: var(--border-focus);
}

.invite-input {
  flex: 1;
  height: var(--input-height);
  padding: 0 var(--space-lg);
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  background: transparent;
  border: none;
  outline: none;
  text-align: center;
}

.invite-input::placeholder {
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.invite-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  height: var(--input-height);
  padding: 0 var(--space-xl);
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--track-surface);
  background: var(--accent-gold);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.invite-submit:hover {
  background: var(--accent-orange);
}

.invite-submit:active {
  transform: scale(0.98);
}

.invite-submit.loading {
  pointer-events: none;
  opacity: 0.7;
}

.invite-submit.loading .btn-text {
  display: none;
}

.btn-arrow {
  font-size: 1.5rem;
  line-height: 1;
}

.error-message {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent-red);
  text-align: center;
  padding: var(--space-sm) var(--space-md);
  background: rgba(231, 76, 60, 0.1);
  border-radius: 4px;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  width: 100%;
  max-width: var(--max-width);
}

.feature {
  text-align: center;
  padding: var(--space-lg);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-md);
  color: var(--accent-gold);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
}

.feature h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-xs);
}

.feature p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Footer */
.landing-footer {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================
   APP PAGE
   ============================================ */

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* App header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--surface-dark);
}

.app-logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.app-logo .logo-lanes {
  transform: skewX(-12deg) scale(0.6);
}

.app-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.02em;
}

.step-indicator {
  display: flex;
  gap: var(--space-sm);
}

.step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--surface-elevated);
  transition: all 0.3s ease;
}

.step-dot.active {
  background: var(--accent-gold);
}

.step-dot.completed {
  background: var(--phase-competition);
}

/* App main content */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: var(--space-xl);
}

/* Step sections */
.step-section {
  display: none;
  flex-direction: column;
  gap: var(--space-xl);
  animation: fadeIn 0.3s ease;
}

.step-section.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.step-title {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.02em;
}

.step-description {
  color: var(--text-secondary);
  margin-top: calc(var(--space-sm) * -1);
}

/* Form elements */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

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

.form-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.form-input,
.form-select,
.form-textarea {
  height: var(--input-height);
  padding: 0 var(--space-md);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--border-focus);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.4)' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: calc(var(--space-md) * 3);
}

.form-textarea {
  height: auto;
  min-height: 100px;
  padding: var(--space-md);
  resize: vertical;
  line-height: 1.6;
}

/* Radio group */
.radio-group {
  display: flex;
  gap: var(--space-sm);
}

.radio-option {
  flex: 1;
}

.radio-option input {
  display: none;
}

.radio-option label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-align: center;
  background: var(--surface-card);
  border: 2px solid var(--border-subtle);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.radio-option label:hover {
  border-color: var(--text-muted);
}

.radio-option input:checked + label {
  border-color: var(--accent-gold);
  background: rgba(245, 166, 35, 0.1);
}

.radio-option .radio-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  letter-spacing: 0.02em;
}

.radio-option .radio-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Checkbox group */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.checkbox-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  transition: all 0.15s ease;
}

.checkbox-option:hover {
  border-color: var(--text-muted);
}

.checkbox-option input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-gold);
}

.checkbox-option input:checked + span {
  color: var(--text-primary);
}

.checkbox-option span {
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  height: var(--input-height);
  padding: 0 var(--space-xl);
  font-family: var(--font-display);
  font-size: 1.125rem;
  letter-spacing: 0.05em;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  color: var(--track-surface);
  background: var(--accent-gold);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-orange);
}

.btn-secondary {
  color: var(--text-primary);
  background: var(--surface-elevated);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.12);
}

.btn-success {
  color: var(--track-surface);
  background: var(--phase-competition);
}

.btn-success:hover:not(:disabled) {
  background: #00e673;
}

.form-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

/* Plan ready inline section */
.plan-ready-section {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* Plan preview */
.plan-preview {
  background: var(--surface-dark);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.preview-header {
  text-align: center;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
}

.preview-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.preview-subtitle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--space-xs);
}

/* Phase timeline */
.preview-timeline {
  display: flex;
  height: 24px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--surface-card);
}

.phase-bar {
  height: 100%;
  transition: opacity 0.2s ease;
}

.phase-bar:hover {
  opacity: 0.8;
}

.phase-bar.general-prep { background: var(--phase-general-prep); }
.phase-bar.special-prep { background: var(--phase-special-prep); }
.phase-bar.competition { background: var(--phase-competition); }
.phase-bar.taper { background: var(--phase-taper); }

/* Legend */
.preview-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.legend-color.general-prep { background: var(--phase-general-prep); }
.legend-color.special-prep { background: var(--phase-special-prep); }
.legend-color.competition { background: var(--phase-competition); }
.legend-color.taper { background: var(--phase-taper); }

/* Competitions list */
.preview-competitions {
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-subtle);
}

.preview-section-title {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.competitions-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.competition-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--surface-card);
  border-radius: 4px;
  font-size: 0.875rem;
}

.competition-item.importance-1 {
  border-left: 3px solid var(--phase-competition);
}

.competition-item.importance-2 {
  border-left: 3px solid var(--accent-gold);
}

.competition-item.importance-3 {
  border-left: 3px solid var(--text-muted);
}

.comp-name {
  flex: 1;
  color: var(--text-primary);
}

.comp-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.comp-week {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  background: var(--surface-elevated);
  padding: 2px 6px;
  border-radius: 3px;
}

.inline-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  height: var(--input-height);
  padding: 0 var(--space-xl);
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--track-surface);
  background: linear-gradient(135deg, var(--phase-competition) 0%, #00e673 100%);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  animation: pulse-glow 2s ease-in-out infinite;
}

.inline-download-btn:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 20px rgba(0, 204, 102, 0.4);
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 204, 102, 0.4); }
  50% { box-shadow: 0 0 20px 4px rgba(0, 204, 102, 0.2); }
}

/* ============================================
   RESULT SECTION
   ============================================ */

.result-summary {
  padding: var(--space-xl);
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
}

.result-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.result-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(0, 204, 102, 0.1);
  border-radius: 50%;
}

.result-header h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.02em;
}

.result-details {
  display: grid;
  gap: var(--space-md);
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
}

.result-row:not(:last-child) {
  border-bottom: 1px solid var(--border-subtle);
}

.result-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.result-value {
  font-weight: 500;
  color: var(--text-primary);
}

/* Phase legend */
.phase-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}

.phase-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
}

.phase-color {
  width: 16px;
  height: 16px;
  border-radius: 2px;
}

.phase-color.general-prep { background: var(--phase-general-prep); }
.phase-color.special-prep { background: var(--phase-special-prep); }
.phase-color.competition { background: var(--phase-competition); }
.phase-color.taper { background: var(--phase-taper); }

/* Download button area */
.download-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.1) 0%, rgba(0, 204, 102, 0.1) 100%);
  border: 1px dashed var(--border-subtle);
  border-radius: 4px;
  text-align: center;
}

.download-section svg {
  width: 48px;
  height: 48px;
  color: var(--accent-gold);
}

/* ============================================
   UTILITIES
   ============================================ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--surface-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--surface-elevated);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ============================================
   SPREADSHEET PREVIEW (Step 3)
   ============================================ */

/* Split-view layout */
.step-preview-section.active {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 80px); /* Account for header */
  max-width: none;
  padding: 0;
  gap: 0;
  /* Break out of app-main's max-width constraint */
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}

/* Preview panel (top ~70%) */
.preview-panel {
  flex: 7;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Spreadsheet container */
.spreadsheet-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--surface-dark);
  overflow: hidden;
}

/* Spreadsheet toolbar */
.spreadsheet-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--surface-card);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.phase-tools {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.toolbar-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.phase-btn {
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--track-surface);
  background: var(--text-muted);
  border: 2px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.phase-btn:hover {
  transform: scale(1.05);
}

.phase-btn.active {
  border-color: var(--text-primary);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

.phase-btn-clear {
  background: var(--surface-elevated);
  color: var(--text-secondary);
}

.toolbar-actions {
  display: flex;
  gap: var(--space-sm);
}

.btn-download {
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  color: var(--track-surface);
  background: var(--phase-competition);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-download:hover {
  background: #00e673;
}

/* Spreadsheet scroll container */
.spreadsheet-scroll-container {
  flex: 1;
  overflow: auto;
  padding: var(--space-md) var(--space-lg);
}

/* Spreadsheet grid */
.spreadsheet-grid {
  display: flex;
  flex-direction: column;
  min-width: fit-content;
  font-size: 0.75rem;
  user-select: none;
}

.spreadsheet-grid.paint-mode {
  cursor: crosshair;
}

.spreadsheet-grid.paint-mode .phase-cell {
  cursor: crosshair;
}

/* Spreadsheet rows */
.spreadsheet-row {
  display: flex;
  min-height: 28px;
}

/* Spreadsheet cells */
.spreadsheet-cell {
  flex: 0 0 60px;
  min-width: 60px;
  padding: 4px 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid var(--border-subtle);
  border-right: none;
  border-bottom: none;
  background: var(--surface-card);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.spreadsheet-cell:last-child {
  border-right: 1px solid var(--border-subtle);
}

.spreadsheet-row:last-child .spreadsheet-cell {
  border-bottom: 1px solid var(--border-subtle);
}

/* Label column (frozen) */
.spreadsheet-label {
  flex: 0 0 120px;
  min-width: 120px;
  position: sticky;
  left: 0;
  z-index: 10;
  background: var(--surface-dark);
  font-weight: 600;
  color: var(--text-secondary);
  justify-content: flex-start;
  text-align: left;
  border-left: 1px solid var(--border-subtle);
}

/* Editable cells */
.spreadsheet-cell.editable {
  cursor: pointer;
  transition: background-color 0.1s ease;
}

.spreadsheet-cell.editable:hover {
  filter: brightness(1.1);
}

/* Competition cells */
.competition-cell {
  font-size: 0.5625rem;
  background: var(--surface-elevated);
}

.competition-cell.has-competition {
  background: rgba(0, 204, 102, 0.15);
  color: var(--phase-competition);
  font-weight: 600;
}

/* Load cells */
.load-cell {
  font-weight: bold;
  font-size: 0.75rem;
}

/* Merged cells */
.spreadsheet-merged-start {
  position: relative;
  overflow: visible;
  z-index: 5;
  font-weight: bold;
  color: white;
}

/* Use CSS to visually span merged cells */
.spreadsheet-merged-start::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: calc(-1 * (var(--span-width, 1) - 1) * 60px - (var(--span-width, 1) - 1) * 1px);
  bottom: 0;
  background: inherit;
  border-right: 1px solid var(--border-subtle);
  z-index: -1;
}

.spreadsheet-merged-hidden {
  visibility: hidden;
}

/* Simple Plan Table */
.plan-table {
  border-collapse: collapse;
  font-size: 0.8rem;
  min-width: max-content;
}

.plan-table th,
.plan-table td {
  border: 1px solid var(--border-subtle);
  padding: 6px 10px;
  text-align: center;
  white-space: nowrap;
  min-width: 60px;
}

.plan-table th {
  background: var(--surface-dark);
  font-weight: 600;
}

.plan-table .label-cell {
  position: sticky;
  left: 0;
  background: var(--surface-card);
  font-weight: 600;
  text-align: left;
  min-width: 110px;
  z-index: 1;
}

.plan-table thead th.label-cell {
  background: var(--surface-dark);
}

.plan-table .week-header {
  background: #1ABC9C;
  color: white;
  font-weight: bold;
}

/* Detailed Plan Table - wider cells for full content */
.plan-table-detailed th,
.plan-table-detailed td {
  min-width: 80px;
  padding: 8px 12px;
}

.plan-table-detailed .label-cell {
  min-width: 120px;
}

/* Allow text wrapping in content rows */
.plan-table-detailed tr:nth-child(n+6) td:not(.label-cell) {
  white-space: normal;
  min-width: 100px;
  max-width: 150px;
  font-size: 0.75rem;
  vertical-align: top;
}

/* Merged row styling */
.plan-table .merged-row td:not(.label-cell) {
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Daily intensity visualization */
.daily-intensity-row td {
  padding: 4px 2px;
}

.daily-intensity-cell {
  vertical-align: middle;
}

.intensity-dots {
  display: flex;
  gap: 2px;
  justify-content: center;
  align-items: center;
}

.intensity-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  display: inline-block;
  cursor: help;
}

/* Wider cells for detailed view to fit 7 dots */
.plan-table-detailed .daily-intensity-cell {
  min-width: 70px;
}

.toolbar-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.plan-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.plan-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: capitalize;
}

.step-actions {
  padding: var(--space-md);
  display: flex;
  justify-content: flex-start;
}

/* ============================================
   COMPETITION SELECTOR
   ============================================ */

.competitions-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-height: 60vh;
  overflow-y: auto;
}

.competitions-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl);
  color: var(--text-secondary);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--surface-elevated);
  border-top-color: var(--accent-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--space-md);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.competitions-error {
  text-align: center;
  padding: var(--space-xl);
  color: var(--accent-red);
}

.competitions-error .error-message {
  margin-bottom: var(--space-md);
}

.competitions-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.competition-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.competition-item:hover {
  background: var(--surface-elevated);
  border-color: var(--accent-gold);
}

.competition-item.selected {
  background: rgba(245, 166, 35, 0.1);
  border-color: var(--accent-gold);
}

.competition-checkbox {
  width: 20px;
  height: 20px;
  accent-color: var(--accent-gold);
  cursor: pointer;
}

.competition-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.competition-name {
  font-weight: 600;
  color: var(--text-primary);
}

.competition-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  gap: var(--space-md);
}

.competition-importance {
  display: flex;
  align-items: center;
  gap: 2px;
  font-size: 0.9rem;
}

.competition-importance.major { color: #E74C3C; }
.competition-importance.significant { color: #F39C12; }
.competition-importance.development { color: #3498DB; }

.competition-type {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.competition-type.indoor {
  background: #3498DB;
  color: white;
}

.competition-type.outdoor {
  background: #27AE60;
  color: white;
}

/* Add custom competition */
.add-custom-section {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-subtle);
}

.btn-add-custom {
  background: transparent;
  border: 1px dashed var(--border-subtle);
  color: var(--text-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: 8px;
  cursor: pointer;
  width: 100%;
  transition: all 0.2s ease;
}

.btn-add-custom:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.custom-competition-form {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  flex-wrap: wrap;
}

.custom-competition-form .form-input,
.custom-competition-form .form-select {
  flex: 1;
  min-width: 150px;
  padding: var(--space-sm);
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--text-primary);
}

.custom-competition-form .form-input:focus,
.custom-competition-form .form-select:focus {
  outline: none;
  border-color: var(--accent-gold);
}

/* ============================================
   COMPETITION EDITOR POPUP
   ============================================ */

.competition-editor {
  z-index: 1000;
  background: var(--surface-dark);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  min-width: 250px;
}

.competition-editor-content {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.competition-editor h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.02em;
  margin: 0;
}

.competition-editor .form-group {
  gap: var(--space-xs);
}

.competition-editor label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.competition-editor input,
.competition-editor select {
  height: 36px;
  padding: 0 var(--space-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-primary);
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  outline: none;
}

.competition-editor input:focus,
.competition-editor select:focus {
  border-color: var(--border-focus);
}

.competition-editor .form-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-xs);
}

.competition-editor .btn-save {
  flex: 1;
  padding: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--track-surface);
  background: var(--phase-competition);
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.competition-editor .btn-save:hover {
  background: #00e673;
}

.competition-editor .btn-cancel {
  padding: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--surface-elevated);
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.competition-editor .btn-delete {
  padding: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: white;
  background: var(--accent-red);
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.competition-editor .btn-delete:hover {
  background: #c0392b;
}

/* ============================================
   PLAN GENERATION MODAL
   ============================================ */

.generation-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.generation-modal.active {
  display: flex;
}

.generation-modal-content {
  text-align: center;
  padding: var(--space-2xl);
}

/* Animated track with running figure */
.generation-track {
  width: 200px;
  height: 4px;
  background: var(--surface-elevated);
  border-radius: 2px;
  margin: 0 auto var(--space-xl);
  position: relative;
  overflow: hidden;
}

.generation-runner {
  position: absolute;
  width: 24px;
  height: 24px;
  background: var(--accent-gold);
  border-radius: 50%;
  top: -10px;
  animation: run-track 2s ease-in-out infinite;
}

@keyframes run-track {
  0%, 100% { left: 0; }
  50% { left: calc(100% - 24px); }
}

.generation-status {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--accent-gold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 600px) {
  :root {
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 3rem;
  }

  .features {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .feature {
    padding: var(--space-md);
  }

  .radio-group {
    flex-direction: column;
  }

  .form-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}