/* =====================================================
   FITTRACK — Global Styles
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ── CSS Variables ── */
:root {
  --bg:          #0a0d14;
  --bg-surface:  #0f1420;
  --bg-card:     #161d2e;
  --bg-card-hov: #1c2438;
  --border:      rgba(255 255 255 / .07);
  --border-hov:  rgba(255 255 255 / .13);

  --primary:     #00e5aa;
  --primary-dk:  #00b887;
  --primary-gl:  rgba(0, 229, 170, .14);

  --secondary:   #ff6040;
  --secondary-gl:rgba(255, 96, 64,  .14);

  --purple:      #8b7cf8;
  --purple-gl:   rgba(139, 124, 248, .14);

  --blue:        #4d9eff;

  --danger:      #ff4d6d;
  --success:     #2ed573;
  --warning:     #ffa502;
  --info:        #4d9eff;

  --cardio-c:    #ff6040;
  --strength-c:  #8b7cf8;
  --yoga-c:      #00e5aa;

  --txt:         #eef2ff;
  --txt-sub:     #8892a8;
  --txt-muted:   #505970;

  --shadow-sm:   0 2px 8px  rgba(0 0 0 / .35);
  --shadow:      0 4px 20px rgba(0 0 0 / .45);
  --shadow-lg:   0 8px 40px rgba(0 0 0 / .55);

  --r-sm:  6px;
  --r:     12px;
  --r-lg:  16px;
  --r-xl:  24px;

  --ease: .25s cubic-bezier(.4,0,.2,1);
  --nav-h: 66px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--txt);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-surface); }
::-webkit-scrollbar-thumb { background: #2a3450; border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: #3a4a6a; }

/* ── Page wrapper ── */
.page-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 32px) 24px 64px;
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(10, 13, 20, .88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--txt);
  letter-spacing: -.4px;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo-icon {
  width: 34px; height: 34px;
  background: var(--primary);
  border-radius: var(--r-sm);
  display: grid; place-items: center;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: var(--r-sm);
  font-size: .9rem;
  font-weight: 500;
  color: var(--txt-sub);
  text-decoration: none;
  transition: background var(--ease), color var(--ease);
}
.nav-link:hover { background: var(--bg-card); color: var(--txt); text-decoration: none; }
.nav-link.active { background: var(--primary-gl); color: var(--primary); }
.nav-link svg { flex-shrink: 0; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .88rem;
  color: var(--txt-sub);
}
.nav-avatar {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: .8rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.btn-logout {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--r-sm);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--txt-sub);
  font-size: .88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--ease);
}
.btn-logout:hover { border-color: var(--danger); color: var(--danger); background: rgba(255,77,109,.08); }

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--txt);
  border-radius: 99px;
  transition: var(--ease);
}

.nav-mobile-menu {
  display: none;
  flex-direction: column;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: rgba(10,13,20,.97);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px 20px;
  gap: 4px;
  z-index: 99;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu .nav-link { padding: 10px 14px; font-size: .95rem; }
.nav-mobile-divider { height: 1px; background: var(--border); margin: 8px 0; }
.nav-mobile-user { display: flex; align-items: center; gap: 10px; padding: 8px 14px; color: var(--txt-sub); font-size:.88rem; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 20px;
  border-radius: var(--r-sm);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #0a0d14;
}
.btn-primary:hover { background: var(--primary-dk); transform: translateY(-1px); box-shadow: 0 4px 16px var(--primary-gl); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--bg-card);
  color: var(--txt);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-card-hov); border-color: var(--border-hov); }

.btn-ghost {
  background: transparent;
  color: var(--txt-sub);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-card); color: var(--txt); }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid rgba(255,77,109,.3);
}
.btn-danger:hover { background: rgba(255,77,109,.12); }

.btn-sm { padding: 6px 14px; font-size: .82rem; }
.btn-lg { padding: 13px 26px; font-size: 1rem; }
.btn-full { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; pointer-events: none; }

/* ── Form elements ── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--txt-sub);
  letter-spacing: .4px;
  text-transform: uppercase;
}
.form-input, .form-select {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-surface);
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--txt);
  font-size: .9rem;
  font-family: inherit;
  transition: border-color var(--ease), box-shadow var(--ease);
  outline: none;
}
.form-input::placeholder { color: var(--txt-muted); }
.form-input:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-gl);
}
.form-input.is-error { border-color: var(--danger); }
.form-input.is-error:focus { box-shadow: 0 0 0 3px rgba(255,77,109,.15); }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238892a8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; cursor: pointer; }
.form-select option { background: #1a2035; }
.form-error { font-size: .78rem; color: var(--danger); min-height: 16px; }
.form-hint { font-size: .78rem; color: var(--txt-muted); }

/* Input group with icon */
.input-wrap { position: relative; }
.input-icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--txt-muted); pointer-events: none; }
.input-wrap .form-input { padding-left: 38px; }
.input-action { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--txt-muted); cursor: pointer; padding: 4px; display: flex; align-items: center; }
.input-action:hover { color: var(--txt); }

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  transition: border-color var(--ease);
}
.card:hover { border-color: var(--border-hov); }
.card-title { font-size: 1rem; font-weight: 700; color: var(--txt); margin-bottom: 4px; }
.card-sub { font-size: .82rem; color: var(--txt-muted); }

/* ── Toast ── */
.toast-container {
  position: fixed;
  bottom: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 10px;
  z-index: 999;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: var(--r-sm);
  font-size: .88rem;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--txt);
  transform: translateX(110%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  pointer-events: all;
  max-width: 320px;
}
.toast.show { transform: translateX(0); }
.toast.t-success { border-color: rgba(46,213,115,.4); }
.toast.t-success .toast-dot { background: var(--success); }
.toast.t-danger  { border-color: rgba(255,77,109,.4); }
.toast.t-danger  .toast-dot { background: var(--danger); }
.toast.t-info    { border-color: rgba(77,158,255,.4); }
.toast.t-info    .toast-dot { background: var(--info); }
.toast-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

/* ── Progress bars ── */
.prog-track {
  width: 100%;
  height: 8px;
  background: rgba(255 255 255 / .06);
  border-radius: 99px;
  overflow: hidden;
}
.prog-fill {
  height: 100%;
  border-radius: 99px;
  transition: width .6s cubic-bezier(.4,0,.2,1);
}
.fill-done { background: linear-gradient(90deg, var(--primary), var(--success)); }
.fill-good { background: linear-gradient(90deg, var(--blue), var(--primary)); }
.fill-low  { background: linear-gradient(90deg, var(--secondary), var(--warning)); }

/* ── Page header ── */
.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}
.page-header-left h1 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -.5px;
  color: var(--txt);
}
.page-header-left p {
  font-size: .9rem;
  color: var(--txt-sub);
  margin-top: 4px;
}

/* ── Section title ── */
.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--txt);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Empty state ── */
.empty-state { text-align: center; padding: 48px 24px; color: var(--txt-sub); }
.empty-state .es-icon { font-size: 3rem; margin-bottom: 12px; opacity: .5; }
.empty-state h3 { font-size: 1.1rem; color: var(--txt); margin-bottom: 6px; }
.empty-state p { font-size: .9rem; }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeUp .35s var(--ease) both; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .page-content { padding: calc(var(--nav-h) + 20px) 16px 48px; }
  .page-header { margin-bottom: 20px; }
  .page-header-left h1 { font-size: 1.4rem; }
  .navbar { padding: 0 16px; }
  .nav-links, .nav-right { display: none; }
  .nav-hamburger { display: flex; }
}
@media (max-width: 480px) {
  .page-content { padding: calc(var(--nav-h) + 12px) 12px 48px; }
}

/* Utility */
.modal-open { overflow: hidden; }
.sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }