:root {
  --coach-cyan: #2f9bff;
  /* Repointed from teal/mint to the Coach category's cyan accent -- the
     variable name is kept to avoid touching every one of its ~15 usages
     below, which are all decorative accent colour, not semantic content. */
  --coach-green: #35cfdf;
  --coach-panel: rgba(16, 39, 67, 0.78);
  --coach-stroke: rgba(53, 207, 223, 0.13);
}

body {
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 8%, rgba(47, 155, 255, 0.16), transparent 32%),
    radial-gradient(circle at 88% 90%, rgba(53, 207, 223, 0.1), transparent 30%),
    linear-gradient(145deg, #050b16 0%, #0c1c32 52%, #081426 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  width: 420px;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(85px);
  opacity: 0.16;
  pointer-events: none;
  animation: coachFloat 13s ease-in-out infinite alternate;
}

body::before { top: -190px; left: -100px; background: #2f9bff; }
body::after { right: -140px; bottom: -220px; background: #35cfdf; animation-delay: -6s; }

.container {
  position: relative;
  width: min(1440px, calc(100% - 40px));
  min-height: calc(100vh - 40px);
  margin: 20px auto;
  padding: 18px;
  overflow: hidden;
  background: rgba(26, 35, 36, 0.72);
  border: 1px solid var(--coach-stroke);
  border-radius: 28px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(22px);
  animation: coachEnter .55s cubic-bezier(.2,.8,.2,1) both;
}

.container::before {
  content: "";
  position: absolute;
  top: 34px;
  right: 30%;
  width: 120px;
  height: 3px;
  border-radius: 99px;
  background: linear-gradient(90deg, transparent, rgba(110, 159, 194, 0.38), transparent);
  box-shadow: -36px 0 0 -1px rgba(53, 207, 223, .2), 36px 0 0 -1px rgba(53, 207, 223, .2);
  pointer-events: none;
  animation: repGlow 5s ease-in-out infinite;
}

.top-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  margin: 0 0 18px;
  padding: 6px 8px 18px;
  border-bottom: 1px solid rgba(53, 207, 223, 0.1);
}

.brand { position: relative; padding-left: 64px; }
.brand::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  transform: translateY(-50%);
  background:
    linear-gradient(#dff8ff, #dff8ff) 11px 12px / 5px 22px no-repeat,
    linear-gradient(#dff8ff, #dff8ff) 30px 12px / 5px 22px no-repeat,
    linear-gradient(90deg, var(--coach-cyan), var(--coach-green)) center / 24px 4px no-repeat,
    linear-gradient(145deg, rgba(110, 159, 194,.23), rgba(53,207,223,.13));
  border: 1px solid rgba(125,211,252,.24);
  box-shadow: 0 0 30px rgba(110, 159, 194,.12);
}

.brand::after {
  content: "FUELPHYSIQUE";
  display: block;
  position: absolute;
  left: 64px;
  top: -11px;
  color: #8fb8cf;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .24em;
}

.brand h1 { font-size: clamp(27px, 3vw, 38px); line-height: 1; }
.brand .subtitle { margin-top: 8px; font-size: 13px; }

.top-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  width: auto;
}

.top-actions .workout-btn:not(.dashboard-btn),
.top-actions .nutrition-builder-btn,
.top-actions .saved-workouts-btn,
.top-actions .saved-nutrition-btn,
.top-actions .progress-btn,
.top-actions .workout-tracker-btn,
.top-actions .workout-history-btn,
.top-actions .exercise-progress-btn { display: none !important; }

.top-actions .dashboard-btn {
  order: -1;
  width: auto;
  min-width: 128px;
  min-height: 43px;
  padding: 9px 14px;
  border-radius: 13px;
  background: rgba(110, 159, 194, 0.08);
  border: 1px solid rgba(110, 159, 194, 0.22);
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.top-actions .dashboard-btn:hover { transform: translateX(-3px); background: rgba(110, 159, 194,.14); border-color: rgba(110, 159, 194,.4); }
.top-actions .dashboard-btn .title { font-size: 14px; }

.top-actions .settings-btn,
.top-actions .clear-btn {
  display: grid;
  place-items: center;
  width: 43px;
  min-width: 43px;
  height: 43px;
  min-height: 43px;
  padding: 0;
  overflow: hidden;
  color: transparent;
  border-radius: 13px;
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.1);
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.top-actions .settings-btn::after { content: "⚙"; color:#dceeff; font-size:18px; }
.top-actions .clear-btn::after { content: "↻"; color:#dceeff; font-size:21px; }
.top-actions .settings-btn::after,
.top-actions .clear-btn::after { -webkit-text-fill-color:#dceeff; font-family:Arial, sans-serif; }
.top-actions .settings-btn:hover { transform: rotate(22deg); background: rgba(110, 159, 194,.13); border-color: rgba(110, 159, 194,.35); }
.top-actions .clear-btn:hover { transform: rotate(-30deg); background: rgba(217, 111, 112,.13); border-color: rgba(251,113,133,.35); }

.app-layout { grid-template-columns: 285px minmax(0, 1fr); gap: 14px; }
.conversation-history,
#chat { border-color: var(--coach-stroke); background: var(--coach-panel); backdrop-filter: blur(14px); }
.conversation-history { min-height: calc(100vh - 155px); animation: slideInLeft .5s .08s both; }
.conversation-history-header h2 { font-size: 22px; }
.conversation-history-header p { font-size: 13px; }
.session-trail-item { transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.session-trail-item:hover { transform: translateX(3px); }

.chat-area { min-height: calc(100vh - 155px); animation: slideInUp .5s .12s both; }
#chat { min-height: 0; height: calc(100vh - 260px); padding: 22px; scroll-behavior: smooth; }
.user, .bot { animation: messagePop .3s cubic-bezier(.2,.8,.2,1) both; }
.bot { border-left: 2px solid rgba(110, 159, 194,.45); }
.user { border-right: 2px solid rgba(53,207,223,.55); }

.input-row {
  position: relative;
  gap: 10px;
  margin-top: 10px;
  padding: 9px;
  border: 1px solid rgba(125,211,252,.14);
  border-radius: 18px;
  background: rgba(3, 11, 25, .72);
  box-shadow: 0 14px 35px rgba(0,0,0,.18);
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.input-row:focus-within { border-color: rgba(110, 159, 194,.45); box-shadow: 0 0 0 4px rgba(110, 159, 194,.07), 0 16px 38px rgba(0,0,0,.22); transform: translateY(-1px); }
.input-row textarea { min-height: 54px; max-height: 150px; padding: 15px 12px; border: 0; background: transparent; }
.input-row textarea:focus { border: 0; box-shadow: none; }
#voiceInputBtn, #sendBtn { min-height: 50px; border-radius: 14px; }
#voiceInputBtn { transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
#voiceInputBtn:hover { transform: translateY(-2px) scale(1.03); box-shadow: 0 8px 22px rgba(110, 159, 194,.15); }
#sendBtn { transition: transform .2s ease, box-shadow .2s ease, filter .2s ease; }
#sendBtn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(53, 207, 223,.2); filter: brightness(1.08); }

@keyframes coachEnter { from { opacity:0; transform: translateY(10px) scale(.992); } to { opacity:1; transform:none; } }
@keyframes slideInLeft { from { opacity:0; transform:translateX(-14px); } to { opacity:1; transform:none; } }
@keyframes slideInUp { from { opacity:0; transform:translateY(14px); } to { opacity:1; transform:none; } }
@keyframes messagePop { from { opacity:0; transform:translateY(7px) scale(.99); } to { opacity:1; transform:none; } }
@keyframes coachFloat { to { transform: translate3d(45px, 32px, 0) scale(1.12); } }
@keyframes repGlow { 0%,100% { opacity:.2; } 50% { opacity:.8; filter:drop-shadow(0 0 10px rgba(110, 159, 194,.4)); } }

html[data-theme="light"] .container { background: rgba(235, 247, 251, .82); }
html[data-theme="light"] .input-row { background: rgba(244, 251, 253, .88); }
html[data-theme="light"] .top-actions .settings-btn::after,
html[data-theme="light"] .top-actions .clear-btn::after { color:#17324d; }

@media (max-width: 900px) {
  .container { width: calc(100% - 20px); min-height: calc(100vh - 20px); margin:10px auto; border-radius:22px; }
  .top-bar { grid-template-columns:minmax(0,1fr) auto; }
  .brand .subtitle { display:none; }
  .conversation-history { min-height:auto; }
  .chat-area { min-height: calc(100vh - 140px); }
  #chat { height: calc(100vh - 270px); }
}

@media (max-width: 700px) {
  .container { width: calc(100% - 12px); margin: 6px auto; padding:12px; border-radius:18px; }
  .container::before { display:none; }
  .top-bar { gap:10px; padding:4px 2px 12px; align-items:flex-start; }
  .brand { padding-left:56px; min-width:0; }
  .brand::before { width:40px; height:40px; }
  .brand::after { left:56px; top:-9px; font-size:8px; }
  .top-actions .settings-btn { display:none; }
  .brand h1 { font-size:22px; line-height:1.05; }
  .top-actions { gap:8px; }
  .top-actions .dashboard-btn { min-width:44px; width:44px; overflow:hidden; white-space:nowrap; color:transparent; }
  .top-actions .dashboard-btn::after { content:"←"; color:#dceeff; font-size:20px; position:absolute; }
  .mobile-history-toggle { margin-bottom:10px; min-height:46px; }
  .chat-area { min-height: calc(100vh - 150px); }
  #chat { height: calc(100vh - 290px); padding:14px; }
  .input-row { flex-direction:row; align-items:flex-end; }
  .input-row textarea { width:100%; min-height:50px; }
  #voiceInputBtn { width:48px; min-width:48px; }
  #sendBtn { width:auto; min-width:72px; min-height:50px; }
  .conversation-history,
  .chat-area,
  #chat { border-radius:18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}

.conversation-history { border-top:2px solid rgba(53, 207, 223,.5); }
.conversation-history-header h2 { background:linear-gradient(90deg,#9d8fc7,#8fb8cf);background-clip:text;-webkit-background-clip:text;color:transparent; }
#newSessionBtn { border-color:rgba(53, 207, 223,.38);background:linear-gradient(135deg,rgba(53, 207, 223,.17),rgba(110, 159, 194,.11)); }
#deleteAllSessionsBtn { border-color:rgba(251,113,133,.32);background:rgba(217, 111, 112,.09); }
.session-trail-item.active { border-color:rgba(53,207,223,.48);background:linear-gradient(135deg,rgba(53, 207, 223,.15),rgba(14,165,233,.09));box-shadow:inset 3px 0 0 #35cfdf; }
.bot { background:linear-gradient(135deg,rgba(20,33,58,.98),rgba(15,36,61,.96));box-shadow:0 8px 28px rgba(14,165,233,.06); }
.user { background:linear-gradient(135deg,rgba(15,101,182,.52),rgba(31,163,186,.42));box-shadow:0 8px 28px rgba(47, 155, 255,.1); }
#sendBtn { background:linear-gradient(135deg,#167fdc,#2f9bff); }
#voiceInputBtn.listening { background:linear-gradient(135deg,rgba(217, 111, 112,.32),rgba(53, 207, 223,.25));box-shadow:0 0 0 6px rgba(217, 111, 112,.08),0 0 24px rgba(217, 111, 112,.2); }

body.settings-page-mode { background:linear-gradient(145deg,#07111f,#10152c 52%,#081d24); }
body.settings-page-mode .container { display:none; }
body.settings-page-mode .settings-overlay { background:radial-gradient(circle at 15% 10%,rgba(110, 159, 194,.14),transparent 28%),radial-gradient(circle at 85% 85%,rgba(53, 207, 223,.13),transparent 30%),#070f1d;backdrop-filter:none; }
body.settings-page-mode .settings-window { width:min(1080px,calc(100% - 36px));height:min(760px,calc(100% - 36px));border-color:rgba(125,211,252,.16);box-shadow:0 30px 90px rgba(0,0,0,.42); }

.coach-minimal-header {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 0;
  margin: 0 0 14px;
  padding: 0 0 14px;
}

.coach-back-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 999px;
  color: #dceeff;
  font-weight: 900;
  text-decoration: none;
  background: rgba(110, 159, 194, 0.08);
  border: 1px solid rgba(125, 211, 252, 0.22);
  box-shadow: 0 10px 28px rgba(14, 165, 233, 0.08);
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}

.coach-back-link:hover {
  transform: translateX(-2px);
  background: rgba(110, 159, 194, 0.14);
  border-color: rgba(125, 211, 252, 0.4);
}

html[data-theme="light"] body { background:radial-gradient(circle at 14% 12%,rgba(22, 127, 220,.16),transparent 30%),radial-gradient(circle at 88% 82%,rgba(26, 169, 186,.1),transparent 30%),linear-gradient(145deg,#eef4fc,#f3f8fd 52%,#e7f0fa);color:#17233b; }
html[data-theme="light"] .container { background:rgba(245,251,253,.76);border-color:rgba(67,92,126,.14);box-shadow:0 28px 75px rgba(52, 69, 70,.14); }
html[data-theme="light"] .conversation-history,html[data-theme="light"] #chat { background:rgba(249,252,255,.72);border-color:rgba(67,92,126,.13); }
html[data-theme="light"] .input-row { background:rgba(255,255,255,.74);border-color:rgba(14,116,144,.18); }
html[data-theme="light"] .bot { background:linear-gradient(135deg,rgba(255,255,255,.9),rgba(232,245,252,.88));color:#17233b; }
html[data-theme="light"] .user { background:linear-gradient(135deg,rgba(187,247,208,.8),rgba(165,243,252,.72));color:#12352b; }
html[data-theme="light"] body.settings-page-mode .settings-overlay { background:radial-gradient(circle at 15% 10%,rgba(110, 159, 194,.24),transparent 30%),radial-gradient(circle at 86% 88%,rgba(53, 207, 223,.16),transparent 32%),linear-gradient(145deg,#e7f7fb,#eef0ff 52%,#e8f8f1); }
html[data-theme="light"] body.settings-page-mode .settings-window { background:rgba(248,252,254,.94);border-color:rgba(67,92,126,.15);box-shadow:0 30px 85px rgba(52, 69, 70,.2); }
html[data-theme="light"] body.settings-page-mode .settings-sidebar { background:linear-gradient(180deg,#e1f2f8,#e9e8fb); }