/* ===========================
   PCycle Design System
   Inspired by Claude.ai
   Warm · Safe · Delightful
   =========================== */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400..700;1,400..700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ---- Custom Properties ---- */
:root {
  /* Colors - Light Theme (Claude.ai inspired eggshell & warm charcoal) */
  --bg-primary: #F9F8F6;
  --bg-secondary: #F3EFE9;
  --bg-surface: #FFFFFF;
  --bg-surface-hover: #FAF6F0;
  --bg-surface-glass: rgba(255, 255, 255, 0.55);

  --text-primary: #1D1816;
  --text-secondary: #5E5450;
  --text-muted: #9A8E89;
  --text-inverse: #FFFFFF;

  --color-primary: #D4726A;
  --color-primary-light: #E89B95;
  --color-primary-dark: #B85A53;
  --color-primary-bg: rgba(212, 114, 106, 0.08);
  --color-primary-bg-hover: rgba(212, 114, 106, 0.14);

  --color-rose: #F2C6C2;
  --color-lavender: #B8A9C9;
  --color-lavender-bg: rgba(184, 169, 201, 0.12);
  --color-sage: #A8BFA0;
  --color-sage-bg: rgba(168, 191, 160, 0.12);
  --color-amber: #E8B86D;
  --color-amber-bg: rgba(232, 184, 109, 0.12);
  --color-blush: #F2C6C2;
  --color-blush-bg: rgba(242, 198, 194, 0.2);

  /* Gradients from Watch Presentation */
  --gradient-welcome: linear-gradient(135deg, #FAF6F1 0%, #F5ECE2 100%);
  --gradient-blush: linear-gradient(135deg, #FAF1F1 0%, #F5E2E2 100%);
  --gradient-lavender: linear-gradient(135deg, #F3F1FA 0%, #E7E2F5 100%);
  --gradient-sage: linear-gradient(135deg, #F1FAF2 0%, #E2F5E4 100%);
  --gradient-amber: linear-gradient(135deg, #FAF8F1 0%, #F5EFE2 100%);
  --gradient-rose: linear-gradient(135deg, #FFF5F4 0%, #FDE4E2 100%);
  --gradient-follicular: linear-gradient(135deg, #FFFBF0 0%, #FDF3D5 100%);
  --gradient-ovulation: linear-gradient(135deg, #F5FAF4 0%, #E8F5E6 100%);
  --gradient-luteal: linear-gradient(135deg, #FBF8FF 0%, #F1E6FD 100%);
  --gradient-self-care: linear-gradient(135deg, #FAF6F1 0%, #F3EDE5 100%);
  --gradient-doctor: linear-gradient(135deg, #F1F8FA 0%, #E2EEF5 100%);
  --gradient-closing: linear-gradient(135deg, #FFEBE9 0%, #EAE0FC 100%);

  --border-color: rgba(29, 24, 22, 0.08);
  --border-color-hover: rgba(29, 24, 22, 0.16);

  /* Typography */
  --font-heading: 'Lora', Georgia, serif;
  --font-body: 'Inter', sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.75rem;
  --text-5xl: 3.5rem;

  --leading-tight: 1.15;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.02em;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.125rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.07);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.09);
  --shadow-glow: 0 0 40px rgba(212, 114, 106, 0.15);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 280ms var(--ease-out);
  --transition-slow: 450ms var(--ease-out);
  --transition-spring: 500ms var(--ease-spring);

  /* Container */
  --container-max: 1140px;
  --container-narrow: 780px;
  --container-padding: var(--space-6);

  /* Navbar */
  --navbar-height: 72px;
}

/* ---- Dark Theme (Claude.ai inspired dark warm charcoal) ---- */
[data-theme="dark"] {
  --bg-primary: #191816;
  --bg-secondary: #22201E;
  --bg-surface: #2A2724;
  --bg-surface-hover: #332F2B;
  --bg-surface-glass: rgba(42, 39, 36, 0.60);

  --text-primary: #F1ECE4;
  --text-secondary: #C4BAB0;
  --text-muted: #8E867E;
  --text-inverse: #191816;

  --color-primary: #E89B95;
  --color-primary-light: #F2C6C2;
  --color-primary-dark: #D4726A;
  --color-primary-bg: rgba(232, 155, 149, 0.1);
  --color-primary-bg-hover: rgba(232, 155, 149, 0.16);

  --border-color: rgba(241, 236, 228, 0.07);
  --border-color-hover: rgba(241, 236, 228, 0.14);

  --shadow-xs: 0 1px 2px rgba(0,0,0,0.15);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.25);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.3);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 40px rgba(232, 155, 149, 0.12);

  /* Gradients from Watch Presentation (Dark Mode) */
  --gradient-welcome: linear-gradient(135deg, #25201A 0%, #1A1612 100%);
  --gradient-blush: linear-gradient(135deg, #251A1A 0%, #1A1212 100%);
  --gradient-lavender: linear-gradient(135deg, #1D1A25 0%, #14121A 100%);
  --gradient-sage: linear-gradient(135deg, #1A251D 0%, #121A14 100%);
  --gradient-amber: linear-gradient(135deg, #25241A 0%, #1A1912 100%);
  --gradient-rose: linear-gradient(135deg, #2A1D1C 0%, #1C1211 100%);
  --gradient-follicular: linear-gradient(135deg, #2A2518 0%, #1C1810 100%);
  --gradient-ovulation: linear-gradient(135deg, #1A2A1E 0%, #101C13 100%);
  --gradient-luteal: linear-gradient(135deg, #231E2A 0%, #15111C 100%);
  --gradient-self-care: linear-gradient(135deg, #25201A 0%, #1D1914 100%);
  --gradient-doctor: linear-gradient(135deg, #1A242A 0%, #11181C 100%);
  --gradient-closing: linear-gradient(135deg, #2A1B24 0%, #1C1221 100%);
}

/* ---- Reset ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-padding-top: calc(var(--navbar-height) + var(--space-8));
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(at 10% 20%, rgba(212, 114, 106, 0.05) 0px, transparent 50%),
    radial-gradient(at 90% 10%, rgba(184, 169, 201, 0.05) 0px, transparent 50%),
    radial-gradient(at 50% 80%, rgba(168, 191, 160, 0.05) 0px, transparent 50%);
  background-attachment: fixed;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
  min-height: 100vh;
}
[data-theme="dark"] body {
  background-image: 
    radial-gradient(at 10% 20%, rgba(232, 155, 149, 0.06) 0px, transparent 50%),
    radial-gradient(at 90% 10%, rgba(184, 169, 201, 0.06) 0px, transparent 50%),
    radial-gradient(at 50% 80%, rgba(168, 191, 160, 0.06) 0px, transparent 50%);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; display: block; }

ul, ol { list-style: none; }

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
  font-size: inherit;
  color: inherit;
}

input, select, textarea {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

::selection {
  background: var(--color-primary-bg-hover);
  color: var(--color-primary-dark);
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p { color: var(--text-secondary); line-height: var(--leading-relaxed); }
.text-muted { color: var(--text-muted); }
.text-primary-color { color: var(--color-primary); }

/* ---- Layout ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}
.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-24) 0;
}
.section--sm { padding: var(--space-16) 0; }
.section--lg { padding: var(--space-32) 0; }

.page-content {
  padding-top: var(--navbar-height);
  min-height: 100vh;
}

/* ---- Navbar ---- */
/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  background: var(--bg-surface-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}
.navbar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-lavender) 50%, var(--color-sage) 100%);
  opacity: 0.35;
}
.navbar.scrolled {
  box-shadow: var(--shadow-md);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--text-primary);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}
.navbar__logo:hover { opacity: 0.8; color: var(--text-primary); }
.navbar__logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-lavender));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: white;
  box-shadow: 0 3px 8px rgba(212,114,106,0.2);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.navbar__link {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}
.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0px;
  left: 50%;
  width: 0%;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast) ease, left var(--transition-fast) ease;
}
.navbar__link:hover {
  color: var(--text-primary);
  background: var(--color-primary-bg);
}
.navbar__link.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
  font-weight: 600;
}
.navbar__link.active::after {
  width: 40%;
  left: 30%;
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: 18px;
  transition: background var(--transition-fast), transform var(--transition-spring);
  border: none;
  cursor: pointer;
}
.theme-toggle:hover {
  background: var(--color-primary-bg-hover);
  transform: scale(1.08);
}

.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text-primary);
  font-size: 22px;
  cursor: pointer;
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4) var(--space-6);
  z-index: 999;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
}
.mobile-menu__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.mobile-menu__link:hover,
.mobile-menu__link.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

/* ---- Footer ---- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-16) 0 var(--space-8);
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
}
.footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-3);
  line-height: var(--leading-relaxed);
  max-width: 300px;
}
.footer__privacy {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-sage-bg);
  color: var(--color-sage);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
}
.footer__col-title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer__link {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer__link:hover { color: var(--color-primary); }
.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.footer__heart { color: var(--color-primary); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -150%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transform: skewX(-25deg);
  transition: none;
  pointer-events: none;
}
.btn:hover::before {
  left: 150%;
  transition: left 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.12) 0%, transparent 100%);
  pointer-events: none;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--text-inverse);
  box-shadow: 0 4px 14px rgba(212, 114, 106, 0.25), 0 2px 4px rgba(0, 0, 0, 0.05);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(212, 114, 106, 0.35), 0 4px 8px rgba(0, 0, 0, 0.05);
  color: var(--text-inverse);
}
.btn--primary:active {
  transform: translateY(0);
}

.btn--secondary {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}
.btn--secondary:hover {
  background: var(--color-primary-bg-hover);
  transform: translateY(-2px);
  color: var(--color-primary-dark);
  box-shadow: 0 4px 10px rgba(212, 114, 106, 0.08);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1.5px solid var(--border-color);
}
.btn--ghost:hover {
  background: var(--bg-surface);
  border-color: var(--border-color-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-full);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ---- Cards ---- */
.card {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(29, 24, 22, 0.03), 0 1px 3px rgba(29, 24, 22, 0.02);
}
[data-theme="dark"] .card {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2), 0 2px 6px rgba(0, 0, 0, 0.15);
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.35) 0%, transparent 40%, var(--color-primary-light) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}
[data-theme="dark"] .card::before {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, transparent 40%, var(--color-primary-light) 100%);
}
.card:hover::before {
  opacity: 1;
}
.card:hover {
  border-color: rgba(212, 114, 106, 0.2);
  box-shadow: 0 12px 30px -4px rgba(212, 114, 106, 0.08), 0 4px 12px -2px rgba(45, 43, 46, 0.03);
  transform: translateY(-3px);
}
.card--glass {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.card--flat {
  border: none;
  background: var(--bg-secondary);
}
.card--flat:hover {
  background: var(--bg-surface-hover);
  box-shadow: var(--shadow-sm);
}
.card--interactive { cursor: pointer; }

.card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--space-5);
}
.card__icon--rose { background: var(--color-blush-bg); color: var(--color-primary); }
.card__icon--lavender { background: var(--color-lavender-bg); color: var(--color-lavender); }
.card__icon--sage { background: var(--color-sage-bg); color: var(--color-sage); }
.card__icon--amber { background: var(--color-amber-bg); color: var(--color-amber); }

.card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.card__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
}
.badge--primary { background: var(--color-primary-bg); color: var(--color-primary); }
.badge--sage { background: var(--color-sage-bg); color: var(--color-sage); }
.badge--lavender { background: var(--color-lavender-bg); color: var(--color-lavender); }
.badge--amber { background: var(--color-amber-bg); color: var(--color-amber); }

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}
.section-header__badge {
  margin-bottom: var(--space-4);
}
.section-header__title {
  margin-bottom: var(--space-4);
}
.section-header__desc {
  font-size: var(--text-lg);
  color: var(--text-muted);
}

/* ---- Decorative Blobs ---- */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}
.blob--rose { background: var(--color-rose); }
.blob--lavender { background: var(--color-lavender); }
.blob--sage { background: var(--color-sage); }
.blob--amber { background: var(--color-amber); }

[data-theme="dark"] .blob { opacity: 0.15; }

/* ---- Animations ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes pulse-soft {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.05); }
}
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Scroll-triggered animation classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}
.animate-on-scroll.delay-1 { transition-delay: 100ms; }
.animate-on-scroll.delay-2 { transition-delay: 200ms; }
.animate-on-scroll.delay-3 { transition-delay: 300ms; }
.animate-on-scroll.delay-4 { transition-delay: 400ms; }

/* ---- Utility ---- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---- Form Styles ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}
.form-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ---- Accordion ---- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.accordion__item {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition-fast);
  box-shadow: 0 4px 15px rgba(29, 24, 22, 0.015);
}
.accordion__item:hover {
  border-color: var(--border-color-hover);
}
.accordion__item.open {
  border-color: var(--color-primary-bg-hover);
}
.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  background: transparent;
  border: none;
  text-align: left;
  font-family: var(--font-body);
  transition: color var(--transition-fast);
}
.accordion__trigger:hover {
  color: var(--color-primary);
}
.accordion__icon {
  font-size: var(--text-xl);
  transition: transform var(--transition-base);
  color: var(--text-muted);
  flex-shrink: 0;
}
.accordion__item.open .accordion__icon {
  transform: rotate(45deg);
  color: var(--color-primary);
}
.accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}
.accordion__item.open .accordion__content {
  max-height: 800px;
}
.accordion__body {
  padding: 0 var(--space-6) var(--space-6);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--bg-secondary);
  padding: var(--space-1);
  border-radius: var(--radius-full);
  width: fit-content;
}
.tab {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
}
.tab:hover { color: var(--text-primary); }
.tab.active {
  background: var(--bg-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* ---- Tooltips ---- */
.tooltip {
  position: relative;
}
.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--text-primary);
  color: var(--bg-primary);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.tooltip:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  :root {
    --text-5xl: 2.75rem;
    --text-4xl: 2.25rem;
    --text-3xl: 1.75rem;
  }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-4xl: 1.875rem;
    --text-3xl: 1.5rem;
    --container-padding: var(--space-4);
    --navbar-height: 64px;
  }
  .section { padding: var(--space-16) 0; }
  .section--lg { padding: var(--space-20) 0; }
  .card { padding: var(--space-5); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: var(--space-6); }
  .footer__bottom { flex-direction: column; gap: var(--space-3); text-align: center; }

  .navbar__links { display: none; }
  .mobile-toggle { display: flex; }
  .mobile-menu { display: block; }
}

@media (max-width: 480px) {
  :root {
    --text-5xl: 1.875rem;
    --text-4xl: 1.5rem;
  }
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-color-hover);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ---- Gradient Section Background Utility Classes ---- */
.bg-grad-welcome { background: var(--gradient-welcome); }
.bg-grad-blush { background: var(--gradient-blush); }
.bg-grad-lavender { background: var(--gradient-lavender); }
.bg-grad-sage { background: var(--gradient-sage); }
.bg-grad-amber { background: var(--gradient-amber); }
.bg-grad-rose { background: var(--gradient-rose); }
.bg-grad-follicular { background: var(--gradient-follicular); }
.bg-grad-ovulation { background: var(--gradient-ovulation); }
.bg-grad-luteal { background: var(--gradient-luteal); }
.bg-grad-self-care { background: var(--gradient-self-care); }
.bg-grad-doctor { background: var(--gradient-doctor); }
.bg-grad-closing { background: var(--gradient-closing); }