:root {
  color-scheme: dark;
  --bg: #0b1329;
  --card-bg: #14213d;
  --panel-border: #1e3a5f;
  --accent-blue: #38bdf8;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
}

* { box-sizing: border-box; }

body {
  background-color: var(--bg);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 20px;
  display: flex;
  justify-content: center;
}

.app-container {
  width: 100%;
  max-width: 1400px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--panel-border);
  margin-bottom: 18px;
}

h1 {
  font-size: 1.5rem;
  margin: 0;
  color: var(--accent-blue);
  font-weight: 700;
}

.badge {
  font-size: 0.82rem;
  padding: 4px 10px;
  border-radius: 9999px;
  border: 1px solid rgba(34, 197, 94, 0.4);
  color: var(--accent-green);
  background: rgba(34, 197, 94, 0.1);
}

/* Top Desktop Nav */
.top-nav {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 12px;
  overflow-x: auto;
}

.nav-btn {
  background: var(--card-bg);
  color: var(--text-muted);
  border: 1px solid var(--panel-border);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 18px;
  cursor: pointer;
  border-radius: 8px;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.nav-btn:hover {
  color: var(--text-main);
  border-color: var(--accent-blue);
}

.nav-btn.active {
  color: #0b1329;
  background: var(--accent-blue);
  border-color: var(--accent-blue);
}

/* Desktop Split 2-Panel Layout (>= 1024px) */
.two-panel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 1024px) {
  .two-panel-grid {
    grid-template-columns: 1.05fr 1fr;
  }
}

.panel {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 22px;
}

.panel-header {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Form fields */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  background: #0b1329;
  border: 1px solid var(--panel-border);
  color: var(--text-main);
  padding: 9px 12px;
  border-radius: 6px;
  font-size: 0.95rem;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
}

/* Clickable calendar indicator */
input[type="date"] {
  cursor: pointer;
}

input[type="date"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  filter: brightness(0) invert(1) !important;
  opacity: 1 !important;
  font-size: 1.2rem;
}

input[type="date"]::-webkit-calendar-picker-indicator:hover {
  filter: brightness(0) invert(1) drop-shadow(0 0 3px var(--accent-blue)) !important;
}

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

.form-row .form-group {
  flex: 1;
}

/* Read-only badges */
.readonly-badge {
  background: #0b1329;
  border: 1px solid var(--panel-border);
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--text-main);
  font-size: 0.9rem;
  min-height: 38px;
  display: flex;
  align-items: center;
}

/* Biomechanics Drawer */
.btn-flyout {
  background: transparent;
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue);
  padding: 7px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-flyout:hover {
  background: rgba(56, 189, 248, 0.1);
}

.flyout-content {
  display: none;
  background: #0b1329;
  border: 1px solid var(--panel-border);
  padding: 12px;
  border-radius: 6px;
  margin-top: 6px;
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.45;
}

.flyout-content.open {
  display: block;
}

/* Action & Confirmation Row */
.action-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--panel-border);
}

.btn-submit {
  background: var(--accent-blue);
  color: #0b1329;
  border: none;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  flex: 1;
}

.btn-submit:hover {
  background: #0284c7;
  color: #ffffff;
}

.btn-submit-day {
  background: #059669;
  color: #ffffff;
  border: none;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 9px 18px;
  border-radius: 6px;
  cursor: pointer;
  flex: 1;
}

.btn-submit-day:hover {
  background: #047857;
}

.confirmation-pill {
  display: none;
  align-items: center;
  gap: 4px;
  color: var(--accent-green);
  font-size: 0.9rem;
  font-weight: 600;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  padding: 8px 12px;
  border-radius: 6px;
}

.confirmation-pill.show {
  display: inline-flex;
}

/* History Cards */
.history-card {
  background: #0b1329;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.history-card .stats {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
}

.history-card .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.history-card .note {
  font-size: 0.8rem;
  color: #cbd5e1;
  font-style: italic;
  margin-top: 4px;
}

.btn-mini-del {
  background: transparent;
  color: var(--accent-red);
  border: 1px solid rgba(239, 68, 68, 0.4);
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.78rem;
}

.btn-mini-del:hover {
  background: var(--accent-red);
  color: #ffffff;
}

/* Mobile Sticky Bottom Nav (< 1024px) */
.mobile-nav-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #0b1329;
  border-top: 1px solid var(--panel-border);
  padding: 8px 12px;
  z-index: 100;
  justify-content: space-around;
}

.mobile-nav-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.mobile-nav-btn.active {
  color: var(--accent-blue);
}

@media (max-width: 1023px) {
  body { padding-bottom: 70px; }
  .mobile-nav-bar { display: flex; }
  .top-nav { display: none; }
}