/* ============================================================
   OBLOZHKA — Clean Light Theme
   Modern light UI with cards, gradients, and smooth animations
   ============================================================ */

/* ------------------------------------------------------------------
   1. CSS Custom Properties
   ------------------------------------------------------------------ */
:root {
  /* Core palette — light */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-tertiary: #f1f3f5;
  --color-bg-surface: #ffffff;

  /* Accent — gradient stays */
  --color-accent-start: #e94560;
  --color-accent-end: #0f3460;
  --color-accent: #e94560;
  --color-accent-hover: #d63851;
  --gradient-accent: linear-gradient(135deg, var(--color-accent-start), var(--color-accent-end));
  --gradient-accent-reverse: linear-gradient(135deg, var(--color-accent-end), var(--color-accent-start));
  --gradient-accent-horizontal: linear-gradient(90deg, var(--color-accent-start), #c23152, var(--color-accent-end));

  /* Text — dark on light */
  --color-text-primary: #1a1a2e;
  --color-text-secondary: #4a5568;
  --color-text-muted: #9ca3af;
  --color-text-inverse: #ffffff;

  /* Borders */
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-hover: rgba(233, 69, 96, 0.4);

  /* Cards (replaces glassmorphism) */
  --glass-bg: #ffffff;
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --glass-blur: blur(0px);

  /* Shadows — subtle for light theme */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-accent: 0 4px 20px rgba(233, 69, 96, 0.2);

  /* Typography */
  --font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;
  --font-size-6xl: 4.5rem;
  --line-height-tight: 1.15;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 1200px;
  --sidebar-width: 260px;
  --nav-height: 72px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}


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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

::selection {
  background: rgba(233, 69, 96, 0.2);
  color: #1a1a2e;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}


/* ------------------------------------------------------------------
   3. Typography
   ------------------------------------------------------------------ */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-tight);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

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

p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 65ch;
}

.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-title {
  font-size: var(--font-size-3xl);
  text-align: center;
  margin-bottom: var(--space-md);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}


/* ------------------------------------------------------------------
   4. Navigation (sticky, transparent -> solid on scroll)
   ------------------------------------------------------------------ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  background: #ffffff;
  border-bottom: 1px solid transparent;
  transition:
    background var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.nav.scrolled {
  background: #ffffff;
  border-bottom-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav__logo {
  font-size: var(--font-size-xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

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

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

.nav__mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
  z-index: 999;
}

.nav__mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.nav__mobile-menu .nav__link {
  font-size: var(--font-size-2xl);
}


/* ------------------------------------------------------------------
   5. Hero Section
   ------------------------------------------------------------------ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + var(--space-3xl)) var(--space-lg) var(--space-4xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.06) 0%, transparent 70%);
  pointer-events: none;
  animation: pulse 8s ease-in-out infinite;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent-start);
  animation: pulse 2s ease-in-out infinite;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  animation: fadeIn 0.8s ease-out;
}

.hero__title .text-gradient {
  background: linear-gradient(135deg, var(--color-accent-start), #ff6b81, var(--color-accent-end));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-shift 6s ease infinite;
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
  animation: fadeIn 0.8s ease-out 0.2s both;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  animation: fadeIn 0.8s ease-out 0.4s both;
}

.hero__visual {
  margin-top: var(--space-3xl);
  position: relative;
  animation: slideUp 1s ease-out 0.6s both;
}

.hero__visual-frame {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xs);
  box-shadow: var(--shadow-xl);
}

.hero__visual-frame img {
  border-radius: var(--radius-md);
  width: 100%;
}


/* ------------------------------------------------------------------
   6. Features Section (Cards Grid)
   ------------------------------------------------------------------ */
.features {
  padding: var(--space-4xl) var(--space-lg);
}

.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  max-width: var(--container-max);
  margin: 0 auto;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent, transparent);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover::before {
  background: var(--gradient-accent);
  opacity: 1;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-accent);
}

.feature-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.feature-card__text {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}


/* ------------------------------------------------------------------
   7. How It Works Section (Numbered Steps)
   ------------------------------------------------------------------ */
.how-it-works {
  padding: var(--space-4xl) var(--space-lg);
  background: var(--color-bg-secondary);
}

.steps {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 27px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent-start), var(--color-accent-end));
  opacity: 0.3;
}

.step {
  display: flex;
  gap: var(--space-xl);
  padding-bottom: var(--space-2xl);
  position: relative;
}

.step:last-child {
  padding-bottom: 0;
}

.step__number {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: #fff;
  box-shadow: var(--shadow-accent);
  position: relative;
  z-index: 1;
}

.step__content {
  padding-top: var(--space-sm);
}

.step__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xs);
}

.step__text {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}


/* ------------------------------------------------------------------
   8. Pricing Section (Cards + Popular Highlight)
   ------------------------------------------------------------------ */
.pricing {
  padding: var(--space-4xl) var(--space-lg);
}

.pricing__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  max-width: 1000px;
  margin: 0 auto;
  align-items: start;
}

.pricing-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card--popular {
  border-color: var(--color-accent-start);
  box-shadow: 0 0 40px rgba(233, 69, 96, 0.15);
  transform: scale(1);
}

.pricing-card--popular:hover {
  transform: scale(1.02);
}

.pricing-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-accent);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-xs) var(--space-lg);
  border-radius: var(--radius-full);
}

.pricing-card__name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.pricing-card__price {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-xs);
}

.pricing-card__price span {
  font-size: var(--font-size-lg);
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-card__period {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

.pricing-card__features {
  text-align: left;
  margin-bottom: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pricing-card__feature {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pricing-card__feature::before {
  content: '\2713';
  color: var(--color-accent-start);
  font-weight: 700;
  flex-shrink: 0;
}


/* ------------------------------------------------------------------
   9. CTA Section
   ------------------------------------------------------------------ */
.cta {
  padding: var(--space-4xl) var(--space-lg);
  text-align: center;
}

.cta__box {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.cta__box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(233, 69, 96, 0.04), rgba(15, 52, 96, 0.04));
  pointer-events: none;
}

.cta__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
  position: relative;
}

.cta__text {
  color: var(--color-text-muted);
  margin: 0 auto var(--space-xl);
  max-width: 480px;
  position: relative;
}


/* ------------------------------------------------------------------
   10. Footer
   ------------------------------------------------------------------ */
.footer {
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand {
  max-width: 280px;
}

.footer__logo {
  font-size: var(--font-size-xl);
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--space-md);
}

.footer__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer__column-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.footer__link {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent-start);
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer__socials {
  display: flex;
  gap: var(--space-md);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast);
}

.footer__social-link:hover {
  border-color: var(--color-accent-start);
  color: var(--color-accent-start);
  background: rgba(233, 69, 96, 0.05);
}


/* ------------------------------------------------------------------
   11. Forms — Floating Labels
   ------------------------------------------------------------------ */
.form {
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
}

.form__group {
  position: relative;
  margin-bottom: var(--space-lg);
}

.form__input {
  width: 100%;
  padding: var(--space-lg) var(--space-md) var(--space-sm);
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form__input:focus {
  border-color: var(--color-accent-start);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.1);
}

.form__label {
  position: absolute;
  top: 50%;
  left: var(--space-md);
  transform: translateY(-50%);
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  pointer-events: none;
  transition:
    top var(--transition-fast),
    font-size var(--transition-fast),
    color var(--transition-fast);
}

.form__input:focus ~ .form__label,
.form__input:not(:placeholder-shown) ~ .form__label {
  top: 12px;
  font-size: var(--font-size-xs);
  color: var(--color-accent-start);
}

.form__input::placeholder {
  color: transparent;
}

.form__input--textarea {
  min-height: 120px;
  resize: vertical;
  padding-top: var(--space-xl);
}

.form__input--textarea ~ .form__label {
  top: var(--space-lg);
  transform: none;
}

.form__input--textarea:focus ~ .form__label,
.form__input--textarea:not(:placeholder-shown) ~ .form__label {
  top: 8px;
}

.form__hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.form__error {
  font-size: var(--font-size-xs);
  color: var(--color-accent-start);
  margin-top: var(--space-xs);
}

.form__divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.form__divider::before,
.form__divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.form__footer {
  text-align: center;
  margin-top: var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Auth pages wrapper */
.auth {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-lg);
}

.auth__card {
  width: 100%;
  max-width: 480px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.auth__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.auth__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-sm);
}

.auth__subtitle {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}


/* ------------------------------------------------------------------
   12. Dashboard Layout (Sidebar + Content)
   ------------------------------------------------------------------ */
.dashboard {
  display: flex;
  min-height: 100vh;
  padding-top: var(--nav-height);
}

.sidebar {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: #ffffff;
  border-right: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  z-index: 900;
}

.sidebar.open {
  transform: translateX(0);
}

.sidebar__section {
  padding: 0 var(--space-md);
  margin-bottom: var(--space-xl);
}

.sidebar__section-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  padding: 0 var(--space-md);
  margin-bottom: var(--space-sm);
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
}

.sidebar__link:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.sidebar__link.active {
  background: rgba(233, 69, 96, 0.08);
  color: var(--color-accent-start);
}

.sidebar__link-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.7;
}

.sidebar__link.active .sidebar__link-icon {
  opacity: 1;
}

.dashboard__content {
  flex: 1;
  padding: var(--space-xl) var(--space-lg);
  min-width: 0;
}

.dashboard__header {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.dashboard__title {
  font-size: var(--font-size-2xl);
}

.dashboard__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.stat-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.stat-card__value {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.stat-card__change {
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
}

.stat-card__change--up {
  color: #4ade80;
}

.stat-card__change--down {
  color: var(--color-accent-start);
}


/* ------------------------------------------------------------------
   13. Catalog (Grid of Preset Cards)
   ------------------------------------------------------------------ */
.catalog {
  padding: var(--space-xl) var(--space-lg);
}

.catalog__filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.catalog__filter {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}

.catalog__filter:hover {
  border-color: var(--color-accent-start);
  color: var(--color-text-primary);
}

.catalog__filter.active {
  background: var(--gradient-accent);
  border-color: transparent;
  color: #fff;
}

.catalog__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.preset-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  position: relative;
  cursor: pointer;
}

.preset-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent, transparent);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
  pointer-events: none;
}

.preset-card:hover::before {
  background: var(--gradient-accent);
  opacity: 1;
}

.preset-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl), 0 0 40px rgba(233, 69, 96, 0.1);
  border-color: transparent;
}

.preset-card__preview {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-bg-secondary);
}

.preset-card__preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.preset-card:hover .preset-card__preview img {
  transform: scale(1.06);
}

.preset-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26, 26, 46, 0.9) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: var(--space-lg);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.preset-card:hover .preset-card__overlay {
  opacity: 1;
}

.preset-card__body {
  padding: var(--space-lg);
}

.preset-card__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.preset-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.preset-card__tag {
  padding: 2px 10px;
  border-radius: var(--radius-full);
  background: rgba(233, 69, 96, 0.12);
  color: var(--color-accent-start);
  font-size: var(--font-size-xs);
  font-weight: 600;
}


/* ------------------------------------------------------------------
   14. Editor Page (Split View: Controls Left, Preview Right)
   ------------------------------------------------------------------ */
.editor {
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--nav-height));
  padding-top: var(--nav-height);
}

.editor__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  background: #ffffff;
  flex-shrink: 0;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.editor__toolbar-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.editor__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}

.editor__controls {
  padding: var(--space-lg);
  overflow-y: auto;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  flex: 0 0 auto;
  max-height: 45vh;
}

.editor__preview {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  padding: var(--space-lg);
  overflow: auto;
  min-height: 300px;
}

.editor__preview-canvas {
  max-width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
}

.editor__control-group {
  margin-bottom: var(--space-xl);
}

.editor__control-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  display: block;
}

.editor__range {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  outline: none;
}

.editor__range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gradient-accent);
  cursor: pointer;
  box-shadow: var(--shadow-accent);
}

.editor__range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gradient-accent);
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-accent);
}

.editor__color-picker {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.editor__color-swatch {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.editor__color-swatch:hover,
.editor__color-swatch.active {
  border-color: var(--color-text-primary);
  transform: scale(1.12);
}

.editor__divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-xl) 0;
}


/* ------------------------------------------------------------------
   15. Buttons
   ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.4;
}

.btn:active {
  transform: scale(0.97);
}

.btn--sm {
  padding: 8px 18px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: 16px 36px;
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
}

.btn--full {
  width: 100%;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  box-shadow: 0 6px 30px rgba(233, 69, 96, 0.4);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0) scale(0.97);
}

.btn-secondary {
  background: #ffffff;
  color: var(--color-text-primary);
  border-color: #d1d5db;
}

.btn-secondary:hover {
  background: var(--color-bg-secondary);
  border-color: #9ca3af;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent-start);
  border-color: var(--color-accent-start);
}

.btn-outline:hover {
  background: rgba(233, 69, 96, 0.1);
  box-shadow: 0 0 20px rgba(233, 69, 96, 0.15);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
  padding: 8px 14px;
}

.btn-ghost:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-secondary);
}

.btn-icon {
  padding: 10px;
  border-radius: var(--radius-sm);
}


/* ------------------------------------------------------------------
   16. Cards (Glassmorphism)
   ------------------------------------------------------------------ */
.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--glass-shadow);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.card__body {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.card__footer {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}


/* ------------------------------------------------------------------
   17. Alerts
   ------------------------------------------------------------------ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--glass-bg);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
}

.alert__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.alert__content {
  flex: 1;
}

.alert__title {
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.alert__text {
  color: var(--color-text-secondary);
}

.alert__close {
  flex-shrink: 0;
  padding: 4px;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.alert__close:hover {
  color: var(--color-text-primary);
}

.alert-error {
  border-color: rgba(233, 69, 96, 0.3);
  background: rgba(233, 69, 96, 0.05);
}

.alert-error .alert__icon,
.alert-error .alert__title {
  color: var(--color-accent-start);
}

.alert-success {
  border-color: rgba(74, 222, 128, 0.3);
  background: rgba(74, 222, 128, 0.08);
}

.alert-success .alert__icon,
.alert-success .alert__title {
  color: #4ade80;
}

.alert-warning {
  border-color: rgba(251, 191, 36, 0.3);
  background: rgba(251, 191, 36, 0.08);
}

.alert-warning .alert__icon,
.alert-warning .alert__title {
  color: #fbbf24;
}

.alert-info {
  border-color: rgba(96, 165, 250, 0.3);
  background: rgba(96, 165, 250, 0.08);
}

.alert-info .alert__icon,
.alert-info .alert__title {
  color: #60a5fa;
}


/* ------------------------------------------------------------------
   18. Modal
   ------------------------------------------------------------------ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: translateY(20px) scale(0.96);
  transition: transform var(--transition-spring);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.modal__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.modal__close {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
}

.modal__close:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.modal__body {
  padding: var(--space-xl);
  overflow-y: auto;
  max-height: calc(90vh - 140px);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--color-border);
}


/* ------------------------------------------------------------------
   19. Animations (@keyframes)
   ------------------------------------------------------------------ */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.05);
  }
}

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Intersection Observer animation classes */
.fade-in {
  opacity: 0;
  transition: opacity 0.7s ease-out;
}

.fade-in.visible {
  opacity: 1;
}

.slide-up {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.7s ease-out,
    transform 0.7s ease-out;
}

.slide-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-left {
  opacity: 0;
  transform: translateX(-40px);
  transition:
    opacity 0.7s ease-out,
    transform 0.7s ease-out;
}

.slide-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-right {
  opacity: 0;
  transform: translateX(40px);
  transition:
    opacity 0.7s ease-out,
    transform 0.7s ease-out;
}

.slide-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition:
    opacity 0.5s ease-out,
    transform 0.5s var(--transition-spring);
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays for child elements */
.stagger > *:nth-child(1) { transition-delay: 0ms; }
.stagger > *:nth-child(2) { transition-delay: 100ms; }
.stagger > *:nth-child(3) { transition-delay: 200ms; }
.stagger > *:nth-child(4) { transition-delay: 300ms; }
.stagger > *:nth-child(5) { transition-delay: 400ms; }
.stagger > *:nth-child(6) { transition-delay: 500ms; }
.stagger > *:nth-child(7) { transition-delay: 600ms; }
.stagger > *:nth-child(8) { transition-delay: 700ms; }

/* Loading spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent-start);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* Skeleton loading */
.skeleton {
  background: linear-gradient(
    90deg,
    #f1f3f5 25%,
    #e9ecef 50%,
    #f1f3f5 75%
  );
  background-size: 400% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}


/* ------------------------------------------------------------------
   20. Utility Classes
   ------------------------------------------------------------------ */

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

.container--sm {
  max-width: 720px;
}

.container--lg {
  max-width: 1400px;
}

/* Text alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Font sizes */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }

/* Font weight */
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Text color */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent-start); }

/* Display */
.d-none { display: none; }
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-flex { display: inline-flex; }

/* Flexbox */
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }
.flex-1 { flex: 1; }

/* Margin top */
.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }
.mt-4xl { margin-top: var(--space-4xl); }
.mt-auto { margin-top: auto; }

/* Margin bottom */
.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }
.mb-4xl { margin-bottom: var(--space-4xl); }

/* Margin horizontal */
.mx-auto { margin-left: auto; margin-right: auto; }

/* Padding */
.p-0 { padding: 0; }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }
.p-2xl { padding: var(--space-2xl); }

.py-sm { padding-top: var(--space-sm); padding-bottom: var(--space-sm); }
.py-md { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-lg { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.py-xl { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }

.px-sm { padding-left: var(--space-sm); padding-right: var(--space-sm); }
.px-md { padding-left: var(--space-md); padding-right: var(--space-md); }
.px-lg { padding-left: var(--space-lg); padding-right: var(--space-lg); }
.px-xl { padding-left: var(--space-xl); padding-right: var(--space-xl); }

/* Width / Height */
.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Border */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Opacity */
.opacity-50 { opacity: 0.5; }
.opacity-70 { opacity: 0.7; }

/* Pointer */
.pointer { cursor: pointer; }

/* Truncate */
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Divider */
.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin: var(--space-xl) 0;
}

/* Visually hidden (accessible) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  background: rgba(233, 69, 96, 0.12);
  color: var(--color-accent-start);
}

.badge--success {
  background: rgba(74, 222, 128, 0.12);
  color: #4ade80;
}

.badge--warning {
  background: rgba(251, 191, 36, 0.12);
  color: #fbbf24;
}

.badge--info {
  background: rgba(96, 165, 250, 0.12);
  color: #60a5fa;
}

/* Tooltip */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 6px 12px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-primary);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast);
  z-index: 100;
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}


/* ------------------------------------------------------------------
   21. Responsive Breakpoints
   ------------------------------------------------------------------ */

/* >= 480px — larger phones */
@media (min-width: 480px) {
  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }

  .catalog__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dashboard__stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* >= 768px — tablets */
@media (min-width: 768px) {
  h1 { font-size: var(--font-size-5xl); }
  h2 { font-size: var(--font-size-4xl); }

  .hero__title {
    font-size: var(--font-size-6xl);
  }

  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }

  .editor__body {
    flex-direction: row;
  }

  .editor__controls {
    width: 340px;
    flex: 0 0 340px;
    max-height: none;
    border-bottom: none;
    border-right: 1px solid var(--color-border);
  }

  .editor__preview {
    min-height: auto;
  }

  .catalog__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav__toggle {
    display: none;
  }

  .nav__links {
    display: flex;
  }
}

/* >= 1024px — small desktops */
@media (min-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pricing__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .catalog__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .dashboard__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .sidebar {
    transform: translateX(0);
  }

  .dashboard__content {
    margin-left: var(--sidebar-width);
  }

  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }

  .editor__controls {
    width: 380px;
    flex: 0 0 380px;
  }

  .cta__box {
    padding: var(--space-4xl) var(--space-3xl);
  }
}

/* >= 1200px — large desktops */
@media (min-width: 1200px) {
  .container {
    padding: 0 var(--space-xl);
  }

  .features__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .catalog__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .editor__controls {
    width: 420px;
    flex: 0 0 420px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in,
  .slide-up,
  .slide-left,
  .slide-right,
  .scale-in {
    opacity: 1;
    transform: none;
  }
}


/* ------------------------------------------------------------------
   22. Additional Classes (compatibility)
   ------------------------------------------------------------------ */

/* animate-on-scroll — used in home.php */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Button size/block aliases */
.btn-sm { padding: 8px 18px; font-size: var(--font-size-xs); border-radius: var(--radius-sm); }
.btn-lg { padding: 16px 36px; font-size: var(--font-size-base); border-radius: var(--radius-md); }
.btn-block, .btn--block { width: 100%; }

/* Section padding helper */
.section {
  padding: var(--space-4xl) 0;
}

/* Pricing section specific — features list with checkmarks */
.pricing-features {
  list-style: none;
  margin-bottom: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pricing-features li::before {
  content: '\2713';
  color: var(--color-accent-start);
  font-weight: 700;
  flex-shrink: 0;
}