:root {
  color-scheme: light dark;
  --bg-1: #eef3ff;
  --bg-2: #c6d8ff;
  --surface: #ffffff;
  --surface-2: #f4f8ff;
  --text: #10162a;
  --muted: #5b6781;
  --primary: #1e5fe0;
  --primary-2: #62a0ff;
  --accent: #0dd6b0;
  --shadow: 0 18px 36px rgba(16, 43, 96, 0.18);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-1: #091427;
    --bg-2: #1a2b50;
    --surface: #111d35;
    --surface-2: #1a2948;
    --text: #ecf2ff;
    --muted: #b9c5dc;
    --primary: #86b8ff;
    --primary-2: #66a3ff;
    --accent: #3ce7c8;
    --shadow: 0 22px 44px rgba(2, 8, 22, 0.45);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Manrope', sans-serif;
  color: var(--text);
  background:
    radial-gradient(120% 80% at 10% 0%, color-mix(in srgb, var(--primary) 18%, var(--bg-2)), transparent),
    radial-gradient(120% 80% at 100% 100%, color-mix(in srgb, var(--accent) 10%, var(--bg-1)), transparent),
    linear-gradient(160deg, var(--bg-1), color-mix(in srgb, var(--bg-2) 70%, #f4f7ff));
  display: flex;
  justify-content: center;
  padding: 18px 12px 24px;
}

.app-shell {
  width: min(430px, 100%);
  border-radius: 34px;
  padding: 16px 16px 18px;
  background:
    radial-gradient(130% 70% at 0% 0%, color-mix(in srgb, var(--primary) 18%, transparent), transparent),
    color-mix(in srgb, var(--surface) 95%, transparent);
  backdrop-filter: blur(9px);
  box-shadow: var(--shadow);
  min-height: calc(100vh - 42px);
  display: flex;
  flex-direction: column;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 2px 14px;
}

.top-actions {
  display: flex;
  gap: 8px;
}

.eyebrow {
  margin: 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

h1 {
  margin: 4px 0 0;
  font-size: 42px;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.icon-button,
.ghost-button,
.filled-button {
  border: 0;
  border-radius: 999px;
  font: inherit;
  cursor: pointer;
}

.icon-button {
  width: 46px;
  height: 46px;
  background: color-mix(in srgb, var(--surface-2) 72%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 20%, transparent);
  color: var(--text);
  font-size: 20px;
}

.ghost-button {
  padding: 8px 12px;
  background: transparent;
  color: var(--primary);
  font-weight: 700;
}

.filled-button {
  width: 100%;
  padding: 13px 16px;
  background: linear-gradient(120deg, var(--primary), var(--primary-2));
  color: #fff;
  font-weight: 800;
}

.status-banner {
  background: color-mix(in srgb, var(--primary) 12%, var(--surface));
  color: var(--text);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 14px;
}

.hidden {
  display: none;
}

.screen {
  display: none;
  animation: fade-up 220ms ease;
}

.screen.active {
  display: block;
}

.week-grid,
.exercise-list {
  display: grid;
  gap: 11px;
}

.day-card,
.exercise-card,
.detail-card {
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: 0 10px 24px rgba(6, 17, 43, 0.24);
}

.user-card {
  border: 1px solid color-mix(in srgb, var(--primary) 20%, transparent);
  width: 100%;
  padding: 14px;
  text-align: left; 
  cursor: pointer;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(
      120deg,
      color-mix(in srgb, var(--surface) 86%, var(--primary) 14%),
      var(--surface)
    );
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 56px 1fr auto;
  align-items: center;
  gap: 12px;
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease;
}

.user-card:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--primary) 42%, transparent);
}

.user-card:active {
  transform: translateY(0);
}

.user-name {
  display: block;
  font-size: 20px;
  font-weight: 800;
}

.user-meta {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 14px;
}

.user-content {
  min-width: 0;
}

.user-sheet {
  display: inline-block;
  margin-top: 7px;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 14%, var(--surface));
}

.user-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--primary) 35%, #fff), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid color-mix(in srgb, var(--primary) 40%, transparent);
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-avatar-fallback {
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.user-cta {
  padding: 8px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(120deg, var(--primary), var(--primary-2));
}

.day-card,
.exercise-card {
  border: 0;
  width: 100%;
  padding: 14px 14px 13px;
  text-align: left;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
  border: 1px solid color-mix(in srgb, var(--primary) 18%, transparent);
}

.day-card:hover,
.exercise-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 26px rgba(6, 17, 43, 0.3);
  border-color: color-mix(in srgb, var(--primary) 35%, transparent);
}

.day-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.day-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.day-name {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.day-plan {
  font-size: 15px;
  color: var(--muted);
  font-weight: 700;
}

.day-count {
  font-size: 12px;
  font-weight: 800;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 14%, var(--surface));
  border-radius: 999px;
  padding: 5px 9px;
}

.exercise-card {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 12px;
  align-items: center;
}

.exercise-thumb {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-md);
  object-fit: cover;
  background: var(--surface-2);
}

.exercise-name {
  margin: 0;
  font-size: 23px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.exercise-meta {
  margin-top: 8px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.meta-chip {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-2) 85%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 14%, transparent);
  border-radius: 999px;
  padding: 4px 8px;
}

.screen-head {
  margin-bottom: 8px;
}

.detail-card {
  padding: 14px;
  border: 1px solid color-mix(in srgb, var(--primary) 20%, transparent);
}

.detail-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-md);
  object-fit: cover;
  background: var(--surface-2);
}

.detail-title {
  margin: 12px 0 4px;
  font-size: 30px;
  letter-spacing: -0.03em;
}

.detail-subtitle {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.detail-chip {
  padding: 10px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface-2) 88%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 14%, transparent);
}

.detail-chip b {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.video-wrap {
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  aspect-ratio: 16 / 9;
}

.video-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.empty-state {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

@media (max-width: 420px) {
  h1 {
    font-size: 38px;
  }

  .day-name,
  .exercise-name,
  .detail-title {
    font-size: 24px;
  }
}