/* ── Design tokens ─────────────────────────────────────────────────────────── */
:root {
  --bg:       #141414;
  --surface:  #1e1e1e;
  --surface2: #272727;
  --border:   #333333;
  --accent:   #e00000;
  --accent2:  #ff3333;
  --text:     #f0f0f0;
  --text-muted: #888;
  --success:  #22c55e;
  --warning:  #f59e0b;
  --danger:   #ef4444;
  --radius:   8px;
  --shadow:   0 4px 24px rgba(0,0,0,0.6);
}

/* ── Light theme overrides ──────────────────────────────────────────────────── */
[data-theme="light"] {
  --bg:       #f2f3f5;
  --surface:  #ffffff;
  --surface2: #eceef1;
  --border:   #d0d3d9;
  --text:     #1a1c20;
  --text-muted: #606570;
  --shadow:   0 4px 24px rgba(0,0,0,0.10);
}
[data-theme="light"] nav       { background: #fff; border-bottom-color: #d0d3d9; }
[data-theme="light"] nav .logo { color: var(--accent); }
[data-theme="light"] .nav-links a { color: var(--text-muted); }
[data-theme="light"] .nav-links a:hover { background: var(--surface2); color: var(--text); }
[data-theme="light"] .nav-links a.active { background: rgba(224,0,0,0.08); color: var(--accent); }
[data-theme="light"] .card { background: var(--surface); border-color: var(--border); }
[data-theme="light"] input,
[data-theme="light"] select,
[data-theme="light"] textarea { background: var(--surface); border-color: var(--border); color: var(--text); }
[data-theme="light"] .upload-area { border-color: var(--border); background: var(--surface2); }

/* ── Theme toggle button ────────────────────────────────────────────────────── */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 15px;
  line-height: 1.2;
  transition: background 0.15s, border-color 0.15s;
  flex-shrink: 0;
}
.theme-toggle:hover { background: var(--surface2); }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Navigation ────────────────────────────────────────────────────────────── */
nav {
  background: #000;
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 200;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 0;
}

nav .logo {
  font-size: 16px;
  font-weight: 800;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  margin-right: 32px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}

.nav-links a:hover   { color: var(--text); background: var(--surface2); }
.nav-links a:visited { color: var(--text-muted); }
.nav-links a.active  { color: var(--text); background: rgba(224,0,0,0.12); }
.nav-links a.active:visited { color: var(--text); }

/* Kill browser default visited purple sitewide */
a:visited { color: inherit; }

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  justify-content: center;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
@media (max-width: 768px) {
  nav { padding: 0 16px; }

  .nav-hamburger { display: flex; }

  .nav-links {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: #000;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 16px;
    z-index: 199;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6);
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: var(--radius);
  }
}

/* ── Layout ────────────────────────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px;
}

h1 { font-size: 24px; font-weight: 700; margin-bottom: 6px; letter-spacing: -0.3px; }
h2 { font-size: 17px; font-weight: 600; margin-bottom: 14px; }
h3 { font-size: 14px; font-weight: 600; }

.subtitle { color: var(--text-muted); margin-bottom: 24px; font-size: 14px; }

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.card + .card { margin-top: 14px; }

/* ── Next race countdown banner ────────────────────────────────────────────── */
.next-race-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 12px 20px;
  flex-wrap: wrap;
}

.next-race-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--accent);
  text-transform: uppercase;
  flex-shrink: 0;
}

.next-race-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  flex: 1;
}

.next-race-days {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Home hero / explainer ─────────────────────────────────────────────────── */
.home-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  margin-bottom: 32px;
}

.home-hero-text h1 {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.home-hero-text p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

.home-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.home-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.home-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 800;
  flex-shrink: 0;
  line-height: 1;
  text-shadow: none;
  margin-top: 1px;
}

.home-step div {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.home-step strong {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.home-step span {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .home-hero { grid-template-columns: 1fr; gap: 20px; padding: 20px; }
  .home-hero-text h1 { font-size: 18px; }
}

/* ── Profile grid ──────────────────────────────────────────────────────────── */
.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

.profile-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.profile-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(224,0,0,0.12);
}

.profile-card.empty {
  border-style: dashed;
  border-color: var(--border);
  align-items: center;
  justify-content: center;
  min-height: 130px;
  color: var(--text-muted);
}

.profile-card.empty:hover { border-color: var(--accent); color: var(--text); }

.profile-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: white;
  margin-bottom: 2px;
  flex-shrink: 0;
}

.profile-name  { font-size: 16px; font-weight: 600; }
.profile-stats { color: var(--text-muted); font-size: 13px; }

.profile-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 8px;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 6px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s, background 0.15s;
  text-decoration: none;
  white-space: nowrap;
  min-height: 38px;
}

.btn:hover  { opacity: 0.85; transform: translateY(-1px); }
.btn:active { transform: translateY(0); opacity: 1; }

.btn-primary   { background: var(--accent); color: #fff; }
.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-success   { background: var(--success); color: #fff; }
.btn-danger    { background: var(--danger); color: #fff; }
.btn-sm        { padding: 7px 13px; font-size: 13px; min-height: 34px; }
.btn-block     { width: 100%; }

/* ── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 14px; }

label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

input[type=text],
input[type=number],
input[type=password],
select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 10px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
}

input:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(224,0,0,0.12);
}

/* ── Gear table ────────────────────────────────────────────────────────────── */
.gear-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.gear-tab {
  padding: 8px 16px;
  border-radius: 6px 6px 0 0;
  background: none;
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
  bottom: -1px;
  white-space: nowrap;
}

.gear-tab.active {
  color: var(--text);
  background: var(--surface2);
  border-color: var(--border);
  border-bottom-color: var(--surface2);
}

.gear-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.gear-table th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 500;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.gear-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.gear-table tr:last-child td { border-bottom: none; }
.gear-table tr:hover td { background: var(--surface2); }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-shared   { background: rgba(224,0,0,0.15); color: var(--accent2); }
.badge-personal { background: rgba(34,197,94,0.15); color: var(--success); }

/* Add gear form */
.add-gear-form {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  gap: 10px;
  align-items: end;
  margin-top: 16px;
}

/* ── Gravel type selector ──────────────────────────────────────────────────── */
.gravel-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}

.gravel-option {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 8px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  user-select: none;
}

.gravel-option:hover { border-color: var(--accent2); }
.gravel-option.selected { border-color: var(--accent); background: rgba(224,0,0,0.08); }
.gravel-option .icon  { font-size: 24px; margin-bottom: 5px; }
.gravel-option .label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.3px; }
.gravel-option .desc  { font-size: 11px; color: var(--text-muted); margin-top: 2px; line-height: 1.3; }

/* ── File upload ───────────────────────────────────────────────────────────── */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  margin-bottom: 14px;
}

.upload-area:hover, .upload-area.drag-over {
  border-color: var(--accent);
  background: rgba(224,0,0,0.04);
}

.upload-area .upload-icon     { font-size: 32px; margin-bottom: 8px; }
.upload-area .upload-text     { color: var(--text-muted); font-size: 13px; }
.upload-area .upload-filename { color: var(--success); font-weight: 600; margin-top: 8px; font-size: 13px; }

/* ── Result card ───────────────────────────────────────────────────────────── */
.result-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-top: 20px;
}

.result-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.result-header .rider-name { font-size: 17px; font-weight: 700; }

.result-header .badge-terrain {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(224,0,0,0.15);
  color: var(--accent2);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  white-space: nowrap;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 18px;
}

.result-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 12px 14px;
}

.result-item .result-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  margin-bottom: 5px;
  font-weight: 600;
}

.result-item .result-value { font-size: 14px; font-weight: 600; }

.pressure-display {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 18px;
}

.pressure-box {
  background: linear-gradient(135deg, var(--accent), #8b0000);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.pressure-box .psi-value {
  font-size: 34px;
  font-weight: 800;
  color: white;
  line-height: 1;
}

.pressure-box .psi-label {
  font-size: 11px;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.course-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 8px;
  margin-bottom: 18px;
}

.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 11px;
  text-align: center;
}

.stat-box .stat-value { font-size: 19px; font-weight: 700; color: var(--accent2); }
.stat-box .stat-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.4px; margin-top: 2px; }

.reasoning-list { list-style: none; padding: 0; }
.reasoning-list li {
  padding: 8px 0 8px 20px;
  position: relative;
  color: var(--text-muted);
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.reasoning-list li:last-child { border-bottom: none; }
.reasoning-list li::before { content: '→'; position: absolute; left: 0; color: var(--accent); }

/* ── Toast ─────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 18px;
  box-shadow: var(--shadow);
  font-size: 14px;
  font-weight: 500;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  max-width: calc(100vw - 40px);
}

.toast.show    { transform: translateY(0); opacity: 1; }
.toast.success { border-color: var(--success); }
.toast.error   { border-color: var(--danger); }

/* ── Loading spinner ───────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Modal ─────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow);
  max-height: 90vh;
  overflow-y: auto;
}

.modal h2 { margin-bottom: 18px; }

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
  flex-wrap: wrap;
}

/* ── Empty state ───────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 44px; margin-bottom: 12px; }
.empty-state p { max-width: 300px; margin: 0 auto; font-size: 14px; }

/* ── History ───────────────────────────────────────────────────────────────── */
.history-item {
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 12px 14px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: border-color 0.2s;
}
.history-item:hover { border-color: var(--accent); }
.history-meta { font-size: 12px; color: var(--text-muted); margin-top: 3px; }

/* ── Section titles ────────────────────────────────────────────────────────── */
.section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 10px;
  margin-top: 20px;
}

/* ── Info tooltip ──────────────────────────────────────────────────────────── */
.tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
  cursor: default;
  position: relative;
  vertical-align: middle;
  margin-left: 5px;
  flex-shrink: 0;
  line-height: 1;
  font-style: normal;
  user-select: none;
}

.tip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  transform: translateX(-50%);
  background: #1a1a1a;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  padding: 8px 11px;
  border-radius: 7px;
  width: max-content;
  max-width: 240px;
  white-space: normal;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 999;
  box-shadow: 0 4px 16px rgba(0,0,0,0.6);
  text-align: left;
}

.tip:hover::after { opacity: 1; }

/* ── Responsive layout helpers ─────────────────────────────────────────────── */

/* 4-col rider info grid */
.rider-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

/* ── Responsive ────────────────────────────────────────────────────────────── */

/* Tablet */
@media (max-width: 900px) {
  .container { padding: 20px 16px; }
  .rider-info-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile */
@media (max-width: 768px) {
  h1 { font-size: 21px; }
  h2 { font-size: 16px; }

  .container { padding: 16px 14px; }

  /* Stack 2-col page grids */
  .page-grid { grid-template-columns: 1fr !important; }

  .result-grid    { grid-template-columns: 1fr; }
  .result-header  { flex-wrap: wrap; }
  .gravel-options { grid-template-columns: 1fr 1fr; }
  .add-gear-form  { grid-template-columns: 1fr; }
  .course-stats   { grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); }
  .pressure-display { grid-template-columns: 1fr 1fr; }

  /* Touch-friendly buttons */
  .btn-sm { padding: 9px 13px; font-size: 13px; min-height: 38px; }

  .profile-actions { grid-template-columns: 1fr 1fr; }

  .modal { padding: 18px; }

  .modal-actions { justify-content: stretch; }
  .modal-actions .btn { flex: 1; }

  .empty-state { padding: 32px 16px; }

  /* Toast full-width on mobile */
  .toast {
    bottom: 12px;
    left: 12px;
    right: 12px;
    max-width: none;
    text-align: center;
  }

  /* Tables scroll horizontally */
  .table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  .gear-table { min-width: 480px; }
}

@media (max-width: 480px) {
  .gravel-options { gap: 6px; }
  .gravel-option { padding: 10px 6px; }
  .gravel-option .icon { font-size: 20px; }
  .pressure-box .psi-value { font-size: 28px; }
  .rider-info-grid { grid-template-columns: 1fr 1fr; }

  /* Tire table: hide RR W column on very small screens */
  .tire-table .col-rr  { display: none; }
}