/* ===========================
   Micro Stretch - styles
   =========================== */

*, *::before, *::after {
  box-sizing: border-box;
}

:root {
  color-scheme: light;

  --color-bg-1: #f4f6fb;
  --color-bg-2: #eceef8;
  --color-surface: #fff;
  --color-text: #2a2d3a;
  --color-muted: #666a78;
  --color-label: #8a8d99;
  --color-faint: #aaadb8;
  --color-border: #dcdfe8;
  --color-divider: #eef0f6;
  --color-primary: #4f6df5;
  --color-primary-2: #8b5cf6;
  --color-primary-hover: #3e58d6;
  --color-primary-tint: #eef1ff;

  --shadow-soft: 0 2px 10px rgba(30, 34, 60, 0.07);
  --shadow-lift: 0 8px 20px rgba(30, 34, 60, 0.12);
}

html {
  overflow-x: hidden;
}

body {
  font-family: -apple-system, "Segoe UI", "Hiragino Sans", system-ui, sans-serif;
  margin: 0;
  padding: 40px 20px 64px;
  background: linear-gradient(160deg, var(--color-bg-1) 0%, var(--color-bg-2) 100%);
  background-attachment: fixed;
  color: var(--color-text);
  overflow-x: hidden;
}

header, main {
  max-width: 680px;
  margin: 0 auto;
}

header {
  margin-bottom: 36px;
}

header h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  background: linear-gradient(100deg, var(--color-primary), var(--color-primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

header p {
  color: var(--color-muted);
  margin: 0;
  font-size: 14px;
}

h2 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 16px;
  padding-left: 12px;
  border-left: 4px solid var(--color-primary);
}

/* Stretch picker section */
#stretch-section {
  background: var(--color-surface);
  border-radius: 16px;
  padding: 26px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-divider);
  text-align: center;
}

.primary-btn {
  background: linear-gradient(100deg, var(--color-primary), var(--color-primary-2));
  color: #fff;
  border: none;
  padding: 14px 26px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(79, 109, 245, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  width: 100%;
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79, 109, 245, 0.4);
}

.primary-btn:active {
  transform: translateY(0);
}

.secondary-btn {
  background: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: 13px 18px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, transform 0.15s ease;
  width: 100%;
}

.secondary-btn:hover {
  background-color: var(--color-primary-tint);
  transform: translateY(-1px);
}

.stretch-card {
  margin-top: 24px;
  padding: 20px;
  background: var(--color-primary-tint);
  border-radius: 14px;
}

.stretch-name {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text);
}

.stretch-duration {
  margin: 0;
  font-size: 15px;
  color: var(--color-muted);
}

.stretch-steps {
  margin-top: 12px;
  padding-left: 20px;
  text-align: left;
}

.stretch-steps li {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.5;
  margin-bottom: 4px;
}

.stretch-steps li:last-child {
  margin-bottom: 0;
}

.stretch-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.stretch-actions .primary-btn,
.stretch-actions .secondary-btn {
  flex: 1;
}

.confirmation {
  margin: 16px 0 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

/* Records */
#records-section {
  margin-bottom: 40px;
}

.records-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.record-line {
  flex: 1;
  min-width: 140px;
  margin: 0;
  padding: 16px 20px;
  background: var(--color-surface);
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-divider);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  text-align: center;
}

@media (max-width: 480px) {
  .stretch-actions {
    flex-direction: column;
  }
}