/*
 * KalorienKlar Marketing UI v1.0
 * Calm Adaptive Health UI
 * Stand: 2026-08-19
 *
 * Ziel:
 * - Gemeinsame Designbasis für kalorienklar.de, Landingpages und Web-Onboarding.
 * - Ruhige, hochwertige Direct-Response-Dramaturgie ohne visuelle Überladung.
 * - Keine extern eingebettete SF Pro. Systemschrift-Stack.
 * - Alle Marketing-Komponenten verwenden semantische Design Tokens.
 *
 * Namenskonvention:
 * - Foundations: --kk-*
 * - Komponenten: .kk-*
 * - Modifiers: .kk-foo--bar
 * - States: [data-state="..."], :hover, :focus-visible, :disabled
 */

/* ==========================================================================
   01. TOKENS
   ========================================================================== */

:root {
  /* Brand */
  --kk-green-50: #eef7f2;
  --kk-green-100: #ddefe5;
  --kk-green-200: #bbddcb;
  --kk-green-300: #8fc4a8;
  --kk-green-400: #5fa781;
  --kk-green-500: #2e7d5a;
  --kk-green-600: #256b4c;
  --kk-green-700: #1e583f;
  --kk-green-800: #194734;
  --kk-green-900: #13392a;

  /* Neutrals */
  --kk-neutral-0: #ffffff;
  --kk-neutral-25: #fcfdfc;
  --kk-neutral-50: #f7f9f8;
  --kk-neutral-100: #f0f3f1;
  --kk-neutral-200: #e2e7e4;
  --kk-neutral-300: #cbd3ce;
  --kk-neutral-400: #98a39d;
  --kk-neutral-500: #68736d;
  --kk-neutral-600: #4d5752;
  --kk-neutral-700: #343c38;
  --kk-neutral-800: #222825;
  --kk-neutral-900: #151a17;
  --kk-neutral-950: #0d100e;

  /* Semantic light */
  --kk-bg-canvas: var(--kk-neutral-50);
  --kk-bg-surface: var(--kk-neutral-0);
  --kk-bg-subtle: var(--kk-neutral-100);
  --kk-bg-elevated: var(--kk-neutral-0);
  --kk-bg-inverse: var(--kk-neutral-900);

  --kk-text-primary: var(--kk-neutral-900);
  --kk-text-secondary: var(--kk-neutral-600);
  --kk-text-tertiary: var(--kk-neutral-500);
  --kk-text-disabled: var(--kk-neutral-400);
  --kk-text-inverse: var(--kk-neutral-0);

  --kk-border-subtle: var(--kk-neutral-200);
  --kk-border-default: var(--kk-neutral-300);
  --kk-border-strong: #8a958f;

  --kk-action-primary: var(--kk-green-500);
  --kk-action-primary-hover: var(--kk-green-600);
  --kk-action-primary-active: var(--kk-green-700);
  --kk-action-primary-subtle: var(--kk-green-50);
  --kk-action-on-primary: #ffffff;

  --kk-info: #175cd3;
  --kk-info-bg: #eff4ff;
  --kk-warning: #8a4b08;
  --kk-warning-bg: #fff4e5;
  --kk-danger: #b42318;
  --kk-danger-bg: #fef3f2;
  --kk-success: var(--kk-green-600);
  --kk-success-bg: var(--kk-green-50);

  --kk-focus: #102a1f;

  /* Data palette */
  --kk-data-energy: #2e7d5a;
  --kk-data-protein: #6d5bd0;
  --kk-data-carbs: #2f6fdb;
  --kk-data-fat: #b35c1e;
  --kk-data-fiber: #0f766e;
  --kk-data-water: #2b6cb0;

  /* Typography */
  --kk-font-sans:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;

  --kk-fw-regular: 400;
  --kk-fw-medium: 500;
  --kk-fw-semibold: 600;
  --kk-fw-bold: 700;

  --kk-fs-xs: 0.8125rem; /* 13 */
  --kk-fs-sm: 0.875rem;  /* 14 */
  --kk-fs-md: 0.9375rem; /* 15 */
  --kk-fs-base: 1.0625rem; /* 17 */
  --kk-fs-lg: 1.125rem; /* 18 */
  --kk-fs-xl: 1.25rem; /* 20 */
  --kk-fs-2xl: 1.5rem; /* 24 */
  --kk-fs-3xl: 1.75rem; /* 28 */
  --kk-fs-4xl: 2rem; /* 32 */
  --kk-fs-5xl: 2.5rem; /* 40 */
  --kk-fs-6xl: 3rem; /* 48 */
  --kk-fs-7xl: 4rem; /* 64 */

  --kk-lh-tight: 1.06;
  --kk-lh-heading: 1.15;
  --kk-lh-body: 1.55;

  --kk-tracking-tight: -0.035em;
  --kk-tracking-heading: -0.02em;
  --kk-tracking-normal: 0;

  /* Spacing: 4px base grid */
  --kk-space-0: 0;
  --kk-space-1: 0.25rem;
  --kk-space-2: 0.5rem;
  --kk-space-3: 0.75rem;
  --kk-space-4: 1rem;
  --kk-space-5: 1.25rem;
  --kk-space-6: 1.5rem;
  --kk-space-8: 2rem;
  --kk-space-10: 2.5rem;
  --kk-space-12: 3rem;
  --kk-space-16: 4rem;
  --kk-space-20: 5rem;
  --kk-space-24: 6rem;
  --kk-space-28: 7rem;
  --kk-space-32: 8rem;

  /* Marketing spacing */
  --kk-section-sm: 4rem;
  --kk-section-md: 6rem;
  --kk-section-lg: 8rem;

  /* Radius */
  --kk-radius-sm: 0.5rem;
  --kk-radius-md: 0.75rem;
  --kk-radius-lg: 1rem;
  --kk-radius-xl: 1.25rem;
  --kk-radius-2xl: 1.5rem;
  --kk-radius-full: 999px;

  /* Layout */
  --kk-page-gutter: 1rem;
  --kk-page-max: 75rem; /* 1200 */
  --kk-copy-max: 40rem; /* 640 */
  --kk-reading-max: 42.5rem; /* 680 */
  --kk-wide-max: 87.5rem; /* 1400 */

  /* Shadows */
  --kk-shadow-raised:
    0 1px 2px rgba(18, 26, 22, 0.05),
    0 4px 12px rgba(18, 26, 22, 0.05);
  --kk-shadow-overlay:
    0 12px 32px rgba(18, 26, 22, 0.12);
  --kk-shadow-modal:
    0 20px 48px rgba(18, 26, 22, 0.16);

  /* Motion */
  --kk-motion-fast: 120ms;
  --kk-motion-default: 180ms;
  --kk-motion-enter: 240ms;
  --kk-motion-overlay: 280ms;
  --kk-motion-route: 320ms;
  --kk-ease-standard: cubic-bezier(0.2, 0, 0, 1);

  /* Component dimensions */
  --kk-control-h-sm: 2.5rem;
  --kk-control-h-md: 3rem;
  --kk-control-h-lg: 3.5rem;
  --kk-touch-target: 2.75rem;

  color-scheme: light;
}

/* Optional explicit dark mode */
[data-theme="dark"] {
  --kk-bg-canvas: #0e1210;
  --kk-bg-surface: #151a17;
  --kk-bg-subtle: #1c221f;
  --kk-bg-elevated: #202824;
  --kk-bg-inverse: #f4f7f5;

  --kk-text-primary: #f4f7f5;
  --kk-text-secondary: #c3cbc6;
  --kk-text-tertiary: #a3ada7;
  --kk-text-disabled: #69736d;
  --kk-text-inverse: #151a17;

  --kk-border-subtle: #2a332e;
  --kk-border-default: #3c4842;
  --kk-border-strong: #657169;

  --kk-action-primary: #6cb08d;
  --kk-action-primary-hover: #74b896;
  --kk-action-primary-active: #5fa47f;
  --kk-action-primary-subtle: #193426;
  --kk-action-on-primary: #0b1a12;

  --kk-info: #82b1ff;
  --kk-info-bg: #162238;
  --kk-warning: #f4b56a;
  --kk-warning-bg: #2e2418;
  --kk-danger: #ff8a80;
  --kk-danger-bg: #331c1a;
  --kk-success: #7fd0a5;
  --kk-success-bg: #193426;

  --kk-focus: #f4f7f5;

  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --kk-bg-canvas: #0e1210;
    --kk-bg-surface: #151a17;
    --kk-bg-subtle: #1c221f;
    --kk-bg-elevated: #202824;
    --kk-bg-inverse: #f4f7f5;

    --kk-text-primary: #f4f7f5;
    --kk-text-secondary: #c3cbc6;
    --kk-text-tertiary: #a3ada7;
    --kk-text-disabled: #69736d;
    --kk-text-inverse: #151a17;

    --kk-border-subtle: #2a332e;
    --kk-border-default: #3c4842;
    --kk-border-strong: #657169;

    --kk-action-primary: #6cb08d;
    --kk-action-primary-hover: #74b896;
    --kk-action-primary-active: #5fa47f;
    --kk-action-primary-subtle: #193426;
    --kk-action-on-primary: #0b1a12;

    --kk-info: #82b1ff;
    --kk-info-bg: #162238;
    --kk-warning: #f4b56a;
    --kk-warning-bg: #2e2418;
    --kk-danger: #ff8a80;
    --kk-danger-bg: #331c1a;
    --kk-success: #7fd0a5;
    --kk-success-bg: #193426;

    --kk-focus: #f4f7f5;

    color-scheme: dark;
  }
}

/* ==========================================================================
   02. RESET / BASE
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 20rem;
  background: var(--kk-bg-canvas);
  color: var(--kk-text-primary);
  font-family: var(--kk-font-sans);
  font-size: var(--kk-fs-base);
  line-height: var(--kk-lh-body);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--kk-action-primary);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--kk-action-primary-hover);
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--kk-text-primary);
}

hr {
  height: 1px;
  border: 0;
  background: var(--kk-border-subtle);
  margin: var(--kk-space-8) 0;
}

::selection {
  color: var(--kk-text-primary);
  background: var(--kk-green-200);
}

/* ==========================================================================
   03. TYPOGRAPHY
   ========================================================================== */

.kk-display-xl,
.kk-display-lg,
.kk-title-1,
.kk-title-2,
.kk-title-3 {
  margin: 0;
  letter-spacing: var(--kk-tracking-heading);
}

.kk-display-xl {
  font-size: clamp(2.25rem, 5vw, 4rem);
  line-height: var(--kk-lh-tight);
  font-weight: var(--kk-fw-bold);
  letter-spacing: var(--kk-tracking-tight);
}

.kk-display-lg {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  font-weight: var(--kk-fw-bold);
  letter-spacing: var(--kk-tracking-tight);
}

.kk-title-1 {
  font-size: clamp(1.75rem, 3vw, 2rem);
  line-height: 1.2;
  font-weight: var(--kk-fw-bold);
}

.kk-title-2 {
  font-size: clamp(1.5rem, 2.4vw, 1.625rem);
  line-height: 1.25;
  font-weight: var(--kk-fw-semibold);
}

.kk-title-3 {
  font-size: 1.25rem;
  line-height: 1.3;
  font-weight: var(--kk-fw-semibold);
}

.kk-body-lg {
  font-size: var(--kk-fs-lg);
  line-height: 1.55;
}

.kk-body {
  font-size: var(--kk-fs-base);
  line-height: var(--kk-lh-body);
}

.kk-body-sm {
  font-size: var(--kk-fs-md);
  line-height: 1.5;
}

.kk-label {
  font-size: var(--kk-fs-sm);
  line-height: 1.3;
  font-weight: var(--kk-fw-semibold);
}

.kk-caption {
  font-size: var(--kk-fs-xs);
  line-height: 1.4;
  color: var(--kk-text-tertiary);
}

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

.kk-text-tertiary {
  color: var(--kk-text-tertiary);
}

.kk-text-center {
  text-align: center;
}

.kk-numeric {
  font-variant-numeric: tabular-nums;
}

.kk-numeric-hero {
  font-size: clamp(2.75rem, 6vw, 4rem);
  line-height: 1;
  font-weight: var(--kk-fw-bold);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
}

.kk-copy {
  max-width: var(--kk-copy-max);
}

.kk-reading {
  max-width: var(--kk-reading-max);
}

/* ==========================================================================
   04. LAYOUT
   ========================================================================== */

.kk-container {
  width: min(calc(100% - (2 * var(--kk-page-gutter))), var(--kk-page-max));
  margin-inline: auto;
}

.kk-container--wide {
  width: min(calc(100% - (2 * var(--kk-page-gutter))), var(--kk-wide-max));
  margin-inline: auto;
}

.kk-container--copy {
  width: min(calc(100% - (2 * var(--kk-page-gutter))), var(--kk-copy-max));
  margin-inline: auto;
}

.kk-section {
  padding-block: var(--kk-section-md);
}

.kk-section--sm {
  padding-block: var(--kk-section-sm);
}

.kk-section--lg {
  padding-block: var(--kk-section-lg);
}

.kk-section--surface {
  background: var(--kk-bg-surface);
}

.kk-section--subtle {
  background: var(--kk-bg-subtle);
}

.kk-section--brand-subtle {
  background: var(--kk-action-primary-subtle);
}

.kk-stack {
  display: flex;
  flex-direction: column;
}

.kk-stack--2 { gap: var(--kk-space-2); }
.kk-stack--3 { gap: var(--kk-space-3); }
.kk-stack--4 { gap: var(--kk-space-4); }
.kk-stack--6 { gap: var(--kk-space-6); }
.kk-stack--8 { gap: var(--kk-space-8); }
.kk-stack--12 { gap: var(--kk-space-12); }

.kk-cluster {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--kk-space-3);
}

.kk-center {
  display: grid;
  place-items: center;
}

.kk-grid {
  display: grid;
  gap: var(--kk-space-6);
}

.kk-grid--2,
.kk-grid--3,
.kk-grid--4 {
  grid-template-columns: 1fr;
}

.kk-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--kk-space-12);
  align-items: center;
}

.kk-split--reverse .kk-split__media {
  order: -1;
}

/* ==========================================================================
   05. ACCESSIBILITY UTILITIES
   ========================================================================== */

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

:where(
  a,
  button,
  input,
  textarea,
  select,
  summary,
  [tabindex]:not([tabindex="-1"])
):focus-visible {
  outline: 3px solid var(--kk-focus);
  outline-offset: 2px;
}

[aria-disabled="true"],
:disabled {
  cursor: not-allowed;
}

/* ==========================================================================
   06. BUTTONS
   ========================================================================== */

.kk-btn {
  min-height: var(--kk-control-h-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--kk-space-2);
  border: 1px solid transparent;
  border-radius: var(--kk-radius-md);
  padding: 0 var(--kk-space-5);
  font-size: var(--kk-fs-md);
  line-height: 1;
  font-weight: var(--kk-fw-semibold);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition:
    background-color var(--kk-motion-default) var(--kk-ease-standard),
    border-color var(--kk-motion-default) var(--kk-ease-standard),
    color var(--kk-motion-default) var(--kk-ease-standard),
    box-shadow var(--kk-motion-default) var(--kk-ease-standard),
    transform var(--kk-motion-fast) var(--kk-ease-standard);
}

.kk-btn:hover {
  text-decoration: none;
}

.kk-btn:active {
  transform: translateY(1px);
}

.kk-btn--lg {
  min-height: var(--kk-control-h-lg);
  padding-inline: var(--kk-space-6);
  font-size: 1rem;
}

.kk-btn--primary {
  background: var(--kk-action-primary);
  color: var(--kk-action-on-primary);
  border-color: var(--kk-action-primary);
}

.kk-btn--primary:hover {
  background: var(--kk-action-primary-hover);
  color: var(--kk-action-on-primary);
  border-color: var(--kk-action-primary-hover);
}

.kk-btn--primary:active {
  background: var(--kk-action-primary-active);
}

.kk-btn--secondary {
  background: var(--kk-bg-surface);
  color: var(--kk-text-primary);
  border-color: var(--kk-border-default);
}

.kk-btn--secondary:hover {
  background: var(--kk-bg-subtle);
  border-color: var(--kk-border-strong);
  color: var(--kk-text-primary);
}

.kk-btn--tertiary {
  background: transparent;
  color: var(--kk-action-primary);
  border-color: transparent;
}

.kk-btn--tertiary:hover {
  background: var(--kk-action-primary-subtle);
  color: var(--kk-action-primary-hover);
}

.kk-btn--destructive {
  background: var(--kk-danger);
  color: #fff;
}

.kk-btn--block {
  width: 100%;
}

.kk-btn:disabled,
.kk-btn[aria-disabled="true"] {
  opacity: 0.5;
  transform: none;
  pointer-events: none;
}

.kk-btn__icon {
  width: 1.25rem;
  height: 1.25rem;
  flex: 0 0 auto;
}

/* ==========================================================================
   07. FORMS
   ========================================================================== */

.kk-field {
  display: grid;
  gap: var(--kk-space-2);
}

.kk-field__label {
  font-size: var(--kk-fs-sm);
  font-weight: var(--kk-fw-semibold);
  color: var(--kk-text-primary);
}

.kk-field__hint {
  font-size: var(--kk-fs-xs);
  color: var(--kk-text-tertiary);
}

.kk-field__error {
  font-size: var(--kk-fs-xs);
  color: var(--kk-danger);
}

.kk-input,
.kk-select,
.kk-textarea {
  width: 100%;
  min-height: 3.25rem;
  border: 1px solid var(--kk-border-default);
  border-radius: var(--kk-radius-md);
  background: var(--kk-bg-surface);
  color: var(--kk-text-primary);
  padding: 0.75rem 0.875rem;
  transition:
    border-color var(--kk-motion-default) var(--kk-ease-standard),
    box-shadow var(--kk-motion-default) var(--kk-ease-standard),
    background-color var(--kk-motion-default) var(--kk-ease-standard);
}

.kk-textarea {
  min-height: 8rem;
  resize: vertical;
}

.kk-input::placeholder,
.kk-textarea::placeholder {
  color: var(--kk-text-tertiary);
}

.kk-input:hover,
.kk-select:hover,
.kk-textarea:hover {
  border-color: var(--kk-border-strong);
}

.kk-input:focus,
.kk-select:focus,
.kk-textarea:focus {
  outline: none;
  border-color: var(--kk-action-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--kk-action-primary) 22%, transparent);
}

.kk-field[data-state="error"] .kk-input,
.kk-field[data-state="error"] .kk-select,
.kk-field[data-state="error"] .kk-textarea {
  border-color: var(--kk-danger);
}

/* ==========================================================================
   08. CARDS
   ========================================================================== */

.kk-card {
  background: var(--kk-bg-surface);
  border: 1px solid var(--kk-border-subtle);
  border-radius: var(--kk-radius-lg);
  padding: var(--kk-space-5);
}

.kk-card--raised {
  box-shadow: var(--kk-shadow-raised);
}

.kk-card--interactive {
  transition:
    transform var(--kk-motion-default) var(--kk-ease-standard),
    box-shadow var(--kk-motion-default) var(--kk-ease-standard),
    border-color var(--kk-motion-default) var(--kk-ease-standard);
}

.kk-card--interactive:hover {
  transform: translateY(-2px);
  border-color: var(--kk-border-default);
  box-shadow: var(--kk-shadow-raised);
}

.kk-card--brand {
  background: var(--kk-action-primary-subtle);
  border-color: color-mix(in srgb, var(--kk-action-primary) 24%, var(--kk-border-subtle));
}

/* ==========================================================================
   09. SITE HEADER / NAVIGATION
   ========================================================================== */

.kk-site-header {
  position: relative;
  z-index: 50;
  background: color-mix(in srgb, var(--kk-bg-canvas) 86%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--kk-border-subtle) 88%, transparent);
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
}

.kk-site-header--sticky {
  position: sticky;
  top: 0;
}

.kk-site-header__inner {
  min-height: 4.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--kk-space-5);
}

.kk-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--kk-space-2);
  color: var(--kk-text-primary);
  text-decoration: none;
  font-weight: var(--kk-fw-bold);
  letter-spacing: -0.02em;
}

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

.kk-brand__mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.6rem;
  background: var(--kk-action-primary);
  color: var(--kk-action-on-primary);
  display: grid;
  place-items: center;
}

.kk-site-nav {
  display: none;
  align-items: center;
  gap: var(--kk-space-6);
}

.kk-site-nav a {
  color: var(--kk-text-secondary);
  text-decoration: none;
  font-size: var(--kk-fs-sm);
  font-weight: var(--kk-fw-medium);
}

.kk-site-nav a:hover {
  color: var(--kk-text-primary);
}

/* ==========================================================================
   10. HERO
   ========================================================================== */

.kk-hero {
  padding-block:
    clamp(var(--kk-space-16), 9vw, var(--kk-space-28))
    clamp(var(--kk-space-16), 8vw, var(--kk-space-24));
}

.kk-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--kk-space-12);
  align-items: center;
}

.kk-hero__content {
  display: grid;
  gap: var(--kk-space-6);
  max-width: 43rem;
}

.kk-eyebrow {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: var(--kk-space-2);
  min-height: 2rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--kk-radius-full);
  background: var(--kk-action-primary-subtle);
  color: var(--kk-green-700);
  font-size: var(--kk-fs-xs);
  line-height: 1.2;
  font-weight: var(--kk-fw-semibold);
}

[data-theme="dark"] .kk-eyebrow {
  color: var(--kk-text-primary);
}

.kk-hero__title {
  margin: 0;
  max-width: 13ch;
  font-size: clamp(2.5rem, 7vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: var(--kk-fw-bold);
}

.kk-hero__lead {
  max-width: 36rem;
  margin: 0;
  color: var(--kk-text-secondary);
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  line-height: 1.55;
}

.kk-hero__actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--kk-space-3);
}

.kk-hero__microcopy {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kk-space-2) var(--kk-space-4);
  color: var(--kk-text-tertiary);
  font-size: var(--kk-fs-xs);
}

.kk-hero__visual {
  position: relative;
  min-height: 22rem;
  display: grid;
  place-items: center;
}

.kk-product-frame {
  width: min(100%, 31rem);
  overflow: hidden;
  border: 1px solid var(--kk-border-subtle);
  border-radius: 1.75rem;
  background: var(--kk-bg-surface);
  box-shadow: var(--kk-shadow-overlay);
}

.kk-product-frame__topbar {
  height: 2.75rem;
  border-bottom: 1px solid var(--kk-border-subtle);
  background: var(--kk-bg-subtle);
}

.kk-product-frame__body {
  padding: var(--kk-space-6);
}

/* ==========================================================================
   11. TRUST / PROOF
   ========================================================================== */

.kk-trust-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--kk-space-4) var(--kk-space-8);
  color: var(--kk-text-secondary);
  font-size: var(--kk-fs-sm);
}

.kk-trust-item {
  display: inline-flex;
  align-items: center;
  gap: var(--kk-space-2);
}

.kk-check {
  width: 1.25rem;
  height: 1.25rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: var(--kk-radius-full);
  background: var(--kk-action-primary-subtle);
  color: var(--kk-action-primary);
  font-size: 0.8rem;
  font-weight: var(--kk-fw-bold);
}

.kk-proof-strip {
  display: grid;
  gap: var(--kk-space-4);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.kk-proof-metric {
  padding: var(--kk-space-5);
  text-align: center;
  border: 1px solid var(--kk-border-subtle);
  border-radius: var(--kk-radius-lg);
  background: var(--kk-bg-surface);
}

.kk-proof-metric__value {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1;
  font-weight: var(--kk-fw-bold);
  font-variant-numeric: tabular-nums;
}

.kk-proof-metric__label {
  margin-top: var(--kk-space-2);
  color: var(--kk-text-secondary);
  font-size: var(--kk-fs-sm);
}

/* ==========================================================================
   12. SECTION HEADERS / BENEFITS
   ========================================================================== */

.kk-section-head {
  display: grid;
  gap: var(--kk-space-4);
  margin-bottom: var(--kk-space-12);
}

.kk-section-head--center {
  max-width: 46rem;
  margin-inline: auto;
  text-align: center;
}

.kk-section-head__kicker {
  color: var(--kk-action-primary);
  font-size: var(--kk-fs-sm);
  font-weight: var(--kk-fw-semibold);
}

.kk-section-head__title {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: var(--kk-fw-bold);
}

.kk-section-head__lead {
  margin: 0;
  color: var(--kk-text-secondary);
  font-size: var(--kk-fs-lg);
  line-height: 1.6;
}

.kk-benefit-card {
  display: grid;
  gap: var(--kk-space-4);
  min-height: 100%;
}

.kk-benefit-card__icon {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  border-radius: var(--kk-radius-md);
  background: var(--kk-action-primary-subtle);
  color: var(--kk-action-primary);
}

.kk-benefit-card__title {
  margin: 0;
  font-size: var(--kk-fs-xl);
  line-height: 1.3;
  font-weight: var(--kk-fw-semibold);
}

.kk-benefit-card__text {
  margin: 0;
  color: var(--kk-text-secondary);
}

/* ==========================================================================
   13. EXPLAINER / STEPS
   ========================================================================== */

.kk-steps {
  counter-reset: kk-step;
  display: grid;
  gap: var(--kk-space-4);
}

.kk-step {
  counter-increment: kk-step;
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: var(--kk-space-4);
  align-items: start;
  padding: var(--kk-space-5);
  border: 1px solid var(--kk-border-subtle);
  border-radius: var(--kk-radius-lg);
  background: var(--kk-bg-surface);
}

.kk-step::before {
  content: counter(kk-step);
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  border-radius: var(--kk-radius-full);
  background: var(--kk-action-primary);
  color: var(--kk-action-on-primary);
  font-weight: var(--kk-fw-bold);
  font-variant-numeric: tabular-nums;
}

.kk-step__title {
  margin: 0 0 var(--kk-space-2);
  font-weight: var(--kk-fw-semibold);
}

.kk-step__text {
  margin: 0;
  color: var(--kk-text-secondary);
}

/* ==========================================================================
   14. TESTIMONIALS
   ========================================================================== */

.kk-testimonial {
  display: grid;
  gap: var(--kk-space-5);
  min-height: 100%;
}

.kk-testimonial__quote {
  margin: 0;
  font-size: var(--kk-fs-lg);
  line-height: 1.55;
  color: var(--kk-text-primary);
}

.kk-testimonial__person {
  display: flex;
  align-items: center;
  gap: var(--kk-space-3);
}

.kk-testimonial__avatar {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--kk-radius-full);
  object-fit: cover;
  background: var(--kk-bg-subtle);
}

.kk-testimonial__name {
  font-size: var(--kk-fs-sm);
  font-weight: var(--kk-fw-semibold);
}

.kk-testimonial__meta {
  font-size: var(--kk-fs-xs);
  color: var(--kk-text-tertiary);
}

/* ==========================================================================
   15. COMPARISON
   ========================================================================== */

.kk-comparison {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--kk-border-subtle);
  border-radius: var(--kk-radius-lg);
  background: var(--kk-bg-surface);
}

.kk-comparison table {
  width: 100%;
  min-width: 42rem;
  border-collapse: collapse;
}

.kk-comparison th,
.kk-comparison td {
  padding: var(--kk-space-4) var(--kk-space-5);
  border-bottom: 1px solid var(--kk-border-subtle);
  text-align: left;
}

.kk-comparison tr:last-child td {
  border-bottom: 0;
}

.kk-comparison th {
  color: var(--kk-text-secondary);
  font-size: var(--kk-fs-sm);
  font-weight: var(--kk-fw-semibold);
  background: var(--kk-bg-subtle);
}

.kk-comparison__yes {
  color: var(--kk-success);
  font-weight: var(--kk-fw-semibold);
}

.kk-comparison__muted {
  color: var(--kk-text-tertiary);
}

/* ==========================================================================
   16. PRICING
   ========================================================================== */

.kk-pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--kk-space-5);
  align-items: stretch;
}

.kk-pricing-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--kk-space-5);
  padding: var(--kk-space-6);
  border: 1px solid var(--kk-border-subtle);
  border-radius: var(--kk-radius-xl);
  background: var(--kk-bg-surface);
}

.kk-pricing-card--recommended {
  border-color: color-mix(in srgb, var(--kk-action-primary) 55%, var(--kk-border-subtle));
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--kk-action-primary) 16%, transparent),
    var(--kk-shadow-raised);
}

.kk-pricing-card__badge {
  width: fit-content;
  min-height: 1.75rem;
  display: inline-flex;
  align-items: center;
  padding-inline: 0.625rem;
  border-radius: var(--kk-radius-full);
  background: var(--kk-action-primary-subtle);
  color: var(--kk-action-primary);
  font-size: var(--kk-fs-xs);
  font-weight: var(--kk-fw-semibold);
}

.kk-pricing-card__title {
  margin: 0;
  font-size: var(--kk-fs-xl);
  font-weight: var(--kk-fw-semibold);
}

.kk-price {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--kk-space-2);
}

.kk-price__value {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  line-height: 1;
  font-weight: var(--kk-fw-bold);
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.kk-price__period {
  color: var(--kk-text-secondary);
  font-size: var(--kk-fs-sm);
}

.kk-pricing-list {
  display: grid;
  gap: var(--kk-space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.kk-pricing-list li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--kk-text-secondary);
}

.kk-pricing-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--kk-success);
  font-weight: var(--kk-fw-bold);
}

.kk-pricing-card__cta {
  margin-top: auto;
}

/* ==========================================================================
   17. FAQ
   ========================================================================== */

.kk-faq {
  display: grid;
  gap: var(--kk-space-3);
}

.kk-faq__item {
  border: 1px solid var(--kk-border-subtle);
  border-radius: var(--kk-radius-lg);
  background: var(--kk-bg-surface);
  overflow: clip;
}

.kk-faq__item summary {
  min-height: 3.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--kk-space-4);
  padding: var(--kk-space-4) var(--kk-space-5);
  cursor: pointer;
  font-weight: var(--kk-fw-semibold);
  list-style: none;
}

.kk-faq__item summary::-webkit-details-marker {
  display: none;
}

.kk-faq__item summary::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--kk-text-tertiary);
  font-size: 1.5rem;
  line-height: 1;
  font-weight: var(--kk-fw-regular);
}

.kk-faq__item[open] summary::after {
  content: "−";
}

.kk-faq__answer {
  padding: 0 var(--kk-space-5) var(--kk-space-5);
  color: var(--kk-text-secondary);
}

.kk-faq__answer > :last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   18. CALLOUT / INLINE PROOF
   ========================================================================== */

.kk-callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--kk-space-3);
  align-items: start;
  padding: var(--kk-space-4);
  border-radius: var(--kk-radius-md);
  border: 1px solid var(--kk-border-subtle);
  background: var(--kk-bg-surface);
}

.kk-callout--success {
  background: var(--kk-success-bg);
}

.kk-callout--warning {
  background: var(--kk-warning-bg);
}

.kk-callout--info {
  background: var(--kk-info-bg);
}

/* ==========================================================================
   19. STICKY CTA
   ========================================================================== */

.kk-sticky-cta {
  position: fixed;
  z-index: 100;
  left: max(var(--kk-space-3), env(safe-area-inset-left));
  right: max(var(--kk-space-3), env(safe-area-inset-right));
  bottom: max(var(--kk-space-3), env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--kk-space-3);
  padding: 0.625rem;
  border: 1px solid color-mix(in srgb, var(--kk-border-default) 70%, transparent);
  border-radius: var(--kk-radius-xl);
  background: color-mix(in srgb, var(--kk-bg-surface) 88%, transparent);
  box-shadow: var(--kk-shadow-overlay);
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
}

.kk-sticky-cta__copy {
  min-width: 0;
  padding-left: var(--kk-space-2);
}

.kk-sticky-cta__title {
  display: block;
  font-size: var(--kk-fs-sm);
  line-height: 1.2;
  font-weight: var(--kk-fw-semibold);
}

.kk-sticky-cta__meta {
  display: block;
  margin-top: 0.15rem;
  color: var(--kk-text-tertiary);
  font-size: 0.72rem;
  line-height: 1.2;
}

/* ==========================================================================
   20. FINAL CTA
   ========================================================================== */

.kk-final-cta {
  overflow: hidden;
  position: relative;
  padding: clamp(var(--kk-space-8), 7vw, var(--kk-space-16));
  border: 1px solid color-mix(in srgb, var(--kk-action-primary) 24%, var(--kk-border-subtle));
  border-radius: var(--kk-radius-2xl);
  background:
    radial-gradient(
      circle at 85% 5%,
      color-mix(in srgb, var(--kk-green-200) 72%, transparent),
      transparent 34%
    ),
    var(--kk-action-primary-subtle);
}

.kk-final-cta__inner {
  position: relative;
  display: grid;
  gap: var(--kk-space-5);
  max-width: 45rem;
}

/* ==========================================================================
   21. FOOTER
   ========================================================================== */

.kk-footer {
  padding-block: var(--kk-space-12);
  border-top: 1px solid var(--kk-border-subtle);
  background: var(--kk-bg-surface);
}

.kk-footer__grid {
  display: grid;
  gap: var(--kk-space-8);
}

.kk-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--kk-space-3) var(--kk-space-6);
}

.kk-footer__nav a {
  color: var(--kk-text-secondary);
  font-size: var(--kk-fs-sm);
  text-decoration: none;
}

.kk-footer__nav a:hover {
  color: var(--kk-text-primary);
}

.kk-footer__legal {
  color: var(--kk-text-tertiary);
  font-size: var(--kk-fs-xs);
}

/* ==========================================================================
   22. GENERIC PRODUCT UI PREVIEWS FOR LANDINGPAGES
   ========================================================================== */

.kk-metric {
  display: grid;
  gap: var(--kk-space-2);
}

.kk-metric__value {
  font-size: clamp(2.25rem, 5vw, 3rem);
  line-height: 1;
  letter-spacing: -0.04em;
  font-weight: var(--kk-fw-bold);
  font-variant-numeric: tabular-nums;
}

.kk-metric__label {
  color: var(--kk-text-secondary);
  font-size: var(--kk-fs-sm);
}

.kk-progress {
  height: 0.625rem;
  overflow: hidden;
  border-radius: var(--kk-radius-full);
  background: var(--kk-bg-subtle);
}

.kk-progress__bar {
  width: var(--kk-progress, 50%);
  height: 100%;
  border-radius: inherit;
  background: var(--kk-action-primary);
}

.kk-meal-preview {
  display: grid;
  gap: var(--kk-space-3);
}

.kk-meal-preview__row {
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  gap: var(--kk-space-3);
  align-items: center;
}

.kk-meal-preview__image {
  width: 3.5rem;
  aspect-ratio: 1;
  border-radius: var(--kk-radius-md);
  background:
    linear-gradient(135deg, var(--kk-green-100), var(--kk-neutral-100));
}

.kk-meal-preview__name {
  font-size: var(--kk-fs-sm);
  font-weight: var(--kk-fw-semibold);
}

.kk-meal-preview__meta,
.kk-meal-preview__value {
  color: var(--kk-text-secondary);
  font-size: var(--kk-fs-xs);
}

.kk-meal-preview__value {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ==========================================================================
   23. SMALL UTILITIES
   ========================================================================== */

.kk-mt-0 { margin-top: 0 !important; }
.kk-mt-2 { margin-top: var(--kk-space-2) !important; }
.kk-mt-4 { margin-top: var(--kk-space-4) !important; }
.kk-mt-6 { margin-top: var(--kk-space-6) !important; }
.kk-mt-8 { margin-top: var(--kk-space-8) !important; }
.kk-mt-12 { margin-top: var(--kk-space-12) !important; }

.kk-mb-0 { margin-bottom: 0 !important; }
.kk-mb-2 { margin-bottom: var(--kk-space-2) !important; }
.kk-mb-4 { margin-bottom: var(--kk-space-4) !important; }
.kk-mb-6 { margin-bottom: var(--kk-space-6) !important; }
.kk-mb-8 { margin-bottom: var(--kk-space-8) !important; }
.kk-mb-12 { margin-bottom: var(--kk-space-12) !important; }

.kk-hide-mobile {
  display: none !important;
}

/* ==========================================================================
   24. RESPONSIVE
   ========================================================================== */

@media (min-width: 37.5rem) { /* 600px */
  :root {
    --kk-page-gutter: 1.5rem;
  }

  .kk-grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .kk-proof-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .kk-hero__actions {
    flex-direction: row;
    align-items: center;
  }

  .kk-pricing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 52.5rem) { /* 840px */
  :root {
    --kk-page-gutter: 2rem;
  }

  .kk-site-nav {
    display: flex;
  }

  .kk-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(20rem, 0.95fr);
    gap: var(--kk-space-16);
  }

  .kk-grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .kk-grid--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .kk-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--kk-space-16);
  }

  .kk-split--reverse .kk-split__media {
    order: 0;
  }

  .kk-split--reverse .kk-split__content {
    order: 1;
  }

  .kk-card {
    padding: var(--kk-space-6);
  }

  .kk-pricing-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .kk-sticky-cta {
    display: none;
  }

  .kk-footer__grid {
    grid-template-columns: 1fr auto;
    align-items: start;
  }

  .kk-hide-mobile {
    display: initial !important;
  }
}

@media (min-width: 75rem) { /* 1200px */
  :root {
    --kk-page-gutter: 3rem;
  }
}

/* ==========================================================================
   25. REDUCED MOTION / HIGH CONTRAST / FALLBACKS
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .kk-card--interactive:hover {
    transform: none;
  }

  .kk-btn:active {
    transform: none;
  }
}

@media (prefers-contrast: more) {
  :root {
    --kk-border-subtle: var(--kk-border-default);
    --kk-border-default: var(--kk-border-strong);
  }

  .kk-site-header,
  .kk-sticky-cta {
    background: var(--kk-bg-surface);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@supports not (backdrop-filter: blur(1px)) {
  .kk-site-header,
  .kk-sticky-cta {
    background: var(--kk-bg-surface);
  }
}

@supports not (color: color-mix(in srgb, white, black)) {
  .kk-site-header {
    background: var(--kk-bg-canvas);
  }

  .kk-sticky-cta {
    background: var(--kk-bg-surface);
  }

  .kk-pricing-card--recommended {
    border-color: var(--kk-action-primary);
  }

  .kk-input:focus,
  .kk-select:focus,
  .kk-textarea:focus {
    box-shadow: 0 0 0 3px rgba(46, 125, 90, 0.2);
  }
}

/* ==========================================================================
   26. PRINT
   ========================================================================== */

@media print {
  .kk-site-header,
  .kk-sticky-cta,
  .kk-btn,
  .kk-footer__nav {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .kk-section {
    padding-block: 1.5rem;
  }

  .kk-card,
  .kk-pricing-card,
  .kk-faq__item {
    box-shadow: none;
    break-inside: avoid;
  }
}