/* === Alpine AI Coach design system (ported from the AlpineAICoach website) === */
:root {
  --color-bg:             #050d1f;
  --color-surface:        #0a1628;
  --color-surface-2:      #0f1e35;
  --color-border:         #1a2d4a;
  --color-border-light:   #243d5e;
  --color-primary:        #38bdf8;
  --color-primary-dim:    #7dd3fc;
  --color-primary-muted:  #1e6a9a;
  --color-accent:         #0ea5e9;
  --color-accent-light:   #38bdf8;
  --color-text:           #f0f8ff;
  --color-text-secondary: #94b8d4;
  --color-text-muted:     #3a5878;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --spacing-xs:  8px;
  --spacing-sm:  16px;
  --spacing-md:  24px;
  --spacing-lg:  40px;
  --spacing-xl:  64px;
  --spacing-2xl: 96px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-md: 0 4px 12px rgba(0,0,0,0.6);
  --transition: 220ms ease-in-out;
  --container-max: 1100px;
  --container-pad: 20px;
}
html[data-theme="light"] {
  --color-bg: #f0f4f8;
  --color-surface: #ffffff;
  --color-surface-2: #f8fafc;
  --color-border: #dde3ed;
  --color-border-light: #c4cfe0;
  --color-primary: #0284c7;
  --color-primary-dim: #0369a1;
  --color-primary-muted: #0284c7;
  --color-accent: #0284c7;
  --color-accent-light: #0369a1;
  --color-text: #0f172a;
  --color-text-secondary: #334155;
  --color-text-muted: #64748b;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.2; letter-spacing: -0.02em; color: var(--color-text); }
h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.1; }
h2 { font-size: clamp(24px, 3.5vw, 36px); }
h3 { font-size: clamp(18px, 2.5vw, 22px); }
h4 { font-size: 16px; font-weight: 500; }
p { color: var(--color-text-secondary); line-height: 1.7; font-size: 16px; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-text); }
strong { color: var(--color-text); font-weight: 600; }

/* === LAYOUT === */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-pad); }
.section { padding: var(--spacing-xl) 0; }
.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-muted);
  margin-bottom: var(--spacing-md);
}

/* === NAVIGATION === */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 14px 0;
  background: rgba(5, 13, 31, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
html[data-theme="light"] .nav { background: rgba(255, 255, 255, 0.95); }
.nav-inner { display: flex; align-items: center; gap: 12px; justify-content: space-between; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.theme-toggle {
  background: none; border: 1px solid var(--color-border); border-radius: 8px;
  cursor: pointer; font-size: 15px; padding: 4px 8px; line-height: 1;
  color: var(--color-text-secondary);
}
.theme-toggle:hover { border-color: var(--color-primary); }
.lang-switch { display: inline-flex; border: 1px solid var(--color-border); border-radius: 8px; overflow: hidden; }
.lang-btn { padding: 4px 8px; font-size: 12px; font-weight: 700; color: var(--color-text-secondary); text-decoration: none; }
.lang-btn:hover { color: var(--color-primary); }
.lang-btn.lang-active { background: var(--color-primary); color: #050d1f; }
html[data-theme="light"] .lang-btn.lang-active { color: #fff; }
.nav-links { display: flex; gap: 18px; }
.nav-link { font-size: 13px; font-weight: 600; color: var(--color-text-secondary); }
.nav-link:hover { color: var(--color-primary); }

/* Hamburger menu: phone + tablet (below 900px); desktop keeps inline links */
.nav-burger { display: none; position: relative; }
.nav-burger summary { list-style: none; cursor: pointer; font-size: 20px; color: var(--color-text); padding: 4px 10px; user-select: none; }
.nav-burger summary::-webkit-details-marker { display: none; }
.nav-burger[open] summary { color: var(--color-primary); }
.nav-burger-menu {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 160px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 10px; padding: 6px; z-index: 50;
  display: flex; flex-direction: column;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}
.nav-burger-menu a { padding: 10px 14px; font-size: 14px; font-weight: 600; color: var(--color-text-secondary); border-radius: 6px; }
.nav-burger-menu a:hover { background: var(--color-surface-2); color: var(--color-primary); }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-burger { display: block; }
}
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo-img { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; }
.nav-logo:hover .nav-logo-text { color: var(--color-primary); }
.nav-logo-text { font-size: 15px; font-weight: 700; color: var(--color-text); letter-spacing: -0.01em; white-space: nowrap; }

/* === BUTTONS === */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-primary); font-size: 14px; font-weight: 600; line-height: 1;
  padding: 14px 24px; border-radius: var(--radius-md); border: none; cursor: pointer;
  text-decoration: none; transition: all var(--transition); letter-spacing: 0.01em; white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
.btn-primary { background: var(--color-primary); color: #050d1f; }
.btn-primary:hover { background: var(--color-text); color: #050d1f; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(56,189,248,0.3); }
.btn-secondary { background: transparent; color: var(--color-text-secondary); border: 1px solid var(--color-border-light); }
.btn-secondary:hover { border-color: var(--color-primary-muted); color: var(--color-text); }

/* === HERO === */
.hero {
  min-height: 100vh; display: flex; flex-direction: column; justify-content: center;
  padding: 120px 0 var(--spacing-xl); position: relative; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-bg-gradient {
  position: absolute; top: 0; left: 0; right: 0; height: 60%;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(56,189,248,0.1) 0%, transparent 70%);
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(56,189,248,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(56,189,248,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, black 30%, transparent 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 760px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(56,189,248,0.08); border: 1px solid rgba(56,189,248,0.2);
  border-radius: 100px; padding: 6px 14px; font-size: 12px; font-weight: 500;
  color: var(--color-primary-dim); margin-bottom: var(--spacing-md); letter-spacing: 0.03em;
}
.hero-tag-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); flex-shrink: 0; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.85); } }
.hero-headline { margin-bottom: var(--spacing-md); }
.hero-headline em { font-style: normal; color: var(--color-primary); }
.hero-subheadline { font-size: 18px; color: var(--color-text-secondary); line-height: 1.65; margin-bottom: var(--spacing-lg); max-width: 600px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--spacing-sm); margin-bottom: var(--spacing-xl); }
.hero-footnote { font-size: 12px; color: var(--color-text-muted); display: flex; align-items: center; gap: 6px; }
.hero-footnote::before { content: ''; display: inline-block; width: 16px; height: 1px; background: var(--color-text-muted); }
.hero-stats { display: flex; flex-wrap: wrap; gap: var(--spacing-lg); padding-top: var(--spacing-xl); border-top: 1px solid var(--color-border); }
.hero-stat-item { display: flex; flex-direction: column; gap: 4px; }
.hero-stat-value { font-size: 22px; font-weight: 700; color: var(--color-text); letter-spacing: -0.03em; }
.hero-stat-label { font-size: 12px; color: var(--color-text-muted); letter-spacing: 0.03em; }

/* === CARDS === */
.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--spacing-md);
  transition: border-color var(--transition);
}
.card:hover { border-color: var(--color-border-light); }
.card h4 { margin-bottom: 6px; }
.card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

/* === FORMS (htmx-friendly, dark theme) === */
label { display: block; font-size: 13px; font-weight: 500; color: var(--color-text-secondary); margin-bottom: 6px; }
input, select, textarea {
  width: 100%; font-family: var(--font-primary); font-size: 15px;
  background: var(--color-surface-2); color: var(--color-text);
  border: 1px solid var(--color-border-light); border-radius: var(--radius-md);
  padding: 12px 14px; margin-bottom: var(--spacing-sm); transition: border-color var(--transition);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--color-primary); }

/* === MAIN === */
main { padding-top: 76px; /* fixed nav offset */ }
main:has(.hero) { padding-top: 0; }

/* === AI ASSISTANT BUBBLE (coach rider detail) === */
.ai-bubble { position: fixed; right: 20px; bottom: 20px; z-index: 60; }
.ai-bubble summary {
  list-style: none; cursor: pointer; width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: #fff; font-weight: 800; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.45); user-select: none;
}
.ai-bubble summary::-webkit-details-marker { display: none; }
.ai-bubble[open] summary { opacity: 0.85; }
.ai-panel {
  position: absolute; right: 0; bottom: 64px; width: 360px; max-width: calc(100vw - 40px);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 14px; overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}
.ai-panel-head {
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: #fff; padding: 12px 16px; font-size: 14px;
}
.ai-suggestions { display: flex; flex-wrap: wrap; gap: 6px; padding: 12px 16px 0; }
.ai-suggestion {
  background: var(--color-surface-2); border: 1px solid var(--color-border);
  border-radius: 999px; padding: 6px 12px; font-size: 12px; cursor: pointer;
  color: #38bdf8; text-align: left;
}
.ai-suggestion:hover { border-color: var(--color-primary); }
.ai-note { font-size: 13px; color: var(--color-text-secondary); padding: 10px 16px 0; }
.ai-answer { padding: 8px 16px; font-size: 13px; max-height: 260px; overflow-y: auto; }
.ai-form { padding: 8px 16px 14px; }
.ai-form textarea {
  width: 100%; min-height: 72px; resize: vertical; margin: 0 0 6px;
  background: var(--color-surface-2); border: 1px solid var(--color-border);
  border-radius: 8px; padding: 10px; color: var(--color-text); font-size: 13px;
}
.ai-form-foot { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 11px; color: var(--color-text-muted); }

/* === SESSION TYPE CHIPS === */
.type-chip {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; color: #0b1220; white-space: nowrap;
}
/* === Last 7 Days dots: 4 over 3 on narrow, 7-across on wide === */
.day-dots {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 14px 10px;
  margin-top: var(--spacing-sm);
}
.day-dots > * { flex: 0 0 calc(25% - 10px); box-sizing: border-box; }
@media (min-width: 641px) {
  .day-dots { flex-wrap: nowrap; justify-content: space-between; gap: 8px; }
  .day-dots > * { flex: 1 1 0; }                /* 7 equal across on tablet/desktop */
}

/* Global loading indicator: thin progress bar pinned under the nav,
   shown while any htmx request or form submit is in flight. */
body.alpine-loading::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 40%;
  background: var(--color-primary, #3b82f6);
  z-index: 9999;
  animation: alpine-progress 1.2s ease-in-out infinite;
}
@keyframes alpine-progress {
  0% { left: -10%; width: 25%; }
  50% { left: 40%; width: 45%; }
  100% { left: 100%; width: 25%; }
}
button.btn-busy { opacity: 0.6; cursor: wait; }