/* ==========================================================================
   Karta Polaka Practice — Landing Page Stylesheet
   Pure CSS3, mobile-first, light + dark themes.
   Customize brand colors and spacing via the CSS variables below.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Brand palette — matches the Karta Polaka app color scheme */
  --color-red-600: #a80100;
  --color-red-500: #c00100;
  --color-red-400: #dc143c;
  --color-red-300: #ff5541;
  --color-red-glow: #ff3b30;
  --color-gold: #f6d155;

  --color-white: #ffffff;
  --color-ink: #1c1b1b;

  /* Light theme surface tokens */
  --bg: #fbf7f6;
  --bg-alt: #f4eeec;
  --surface: #ffffff;
  --surface-2: #f7f1f0;
  --surface-border: #e7dedb;
  --text: #201b1a;
  --text-muted: #5b514e;
  --text-soft: #857a76;
  --accent: var(--color-red-500);
  --accent-strong: var(--color-red-600);
  --accent-contrast: #ffffff;
  --shadow-color: 220 30% 10%;
  --glow-opacity: 0.28;
  --header-bg: rgba(255, 255, 255, 0.78);
  --overlay-tint: 255, 255, 255;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  --container-w: 1180px;
  --space-section: clamp(64px, 9vw, 128px);

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.18s var(--ease);
  --transition-med: 0.35s var(--ease);
}

:root[data-theme="dark"] {
  --bg: #0c0d10;
  --bg-alt: #131417;
  --surface: #16171b;
  --surface-2: #1c1d22;
  --surface-border: #2a2b30;
  --text: #f5f2f1;
  --text-muted: #b9b3b0;
  --text-soft: #857e7b;
  --accent: #ff5541;
  --accent-strong: #ff7a68;
  --accent-contrast: #1c0000;
  --glow-opacity: 0.55;
  --header-bg: rgba(12, 13, 16, 0.72);
  --overlay-tint: 12, 13, 16;
}

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-base);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition-med), color var(--transition-med);
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  line-height: 1.15;
  margin: 0 0 0.5em;
  font-weight: 800;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 1em;
  color: var(--text-muted);
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

svg {
  display: block;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: 20px;
}

.container--narrow {
  max-width: 820px;
}

.section {
  padding-block: var(--space-section);
  position: relative;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-eyebrow {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
}

.section-lead {
  font-size: 1.05rem;
  margin-top: 12px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 12px 18px;
  border-radius: 0 0 10px 0;
  z-index: 1000;
  font-weight: 700;
}

.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--color-red-500), var(--color-red-400));
  color: #fff;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-glow {
  box-shadow: 0 0 0 rgba(220, 20, 60, 0);
}

.btn-glow:hover,
.btn-glow:focus-visible {
  box-shadow: 0 8px 30px -6px hsla(0, 90%, 45%, var(--glow-opacity)), 0 0 24px hsla(0, 100%, 60%, calc(var(--glow-opacity) * 0.6));
  transform: translateY(-2px);
}

.btn-store {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--surface-border);
  padding: 11px 22px 11px 18px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.btn-store svg {
  color: var(--accent);
  flex-shrink: 0;
}

.btn-store-text {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.2;
}

.btn-store-text small {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.btn-store-text strong {
  font-size: 1.02rem;
  font-weight: 700;
}

.btn-store:hover,
.btn-store:focus-visible {
  border-color: var(--accent);
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.icon-btn:hover {
  background: var(--surface-2);
  color: var(--accent);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-med), background var(--transition-med);
}

.site-header.is-scrolled {
  border-bottom-color: var(--surface-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  min-width: 0;
  flex: 1 1 auto;
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  flex-shrink: 0;
}

.brand-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.brand-name-accent {
  color: var(--accent);
}

.main-nav {
  display: none;
  align-items: center;
  gap: 28px;
  font-weight: 600;
  font-size: 0.92rem;
}

.main-nav a {
  color: var(--text-muted);
  position: relative;
  padding-block: 6px;
  transition: color var(--transition-fast);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--accent);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

@media (max-width: 460px) {
  .brand-name-accent {
    display: none;
  }
}

@media (max-width: 380px) {
  .lang-code {
    display: none;
  }
  .lang-btn {
    padding: 8px;
  }
}

.header-cta {
  display: none;
  padding: 10px 18px;
  font-size: 0.85rem;
}

.mobile-menu .btn {
  margin: 16px 20px 20px;
  max-width: calc(100% - 40px);
  white-space: normal;
  text-align: center;
}

.mobile-menu-toggle {
  position: relative;
}

.burger,
.burger::before,
.burger::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.burger {
  position: relative;
}

.burger::before {
  position: absolute;
  top: -6px;
}

.burger::after {
  position: absolute;
  top: 6px;
}

.mobile-menu-toggle[aria-expanded="true"] .burger {
  background: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .burger::before {
  transform: translateY(6px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .burger::after {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
  max-height: 0;
  overflow: hidden;
  background: var(--surface);
  border-top: 1px solid transparent;
  transition: max-height var(--transition-med), border-color var(--transition-med);
}

.mobile-menu.is-open {
  max-height: 520px;
  border-top-color: var(--surface-border);
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  padding: 12px 20px;
}

.mobile-menu nav a {
  padding: 12px 0;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--surface-border);
}

@media (min-width: 900px) {
  .main-nav {
    display: flex;
  }
  .header-cta {
    display: inline-flex;
  }
  .mobile-menu-toggle {
    display: none;
  }
}

/* ---------- Theme toggle icon swap ---------- */
.theme-toggle .icon-moon {
  display: none;
}

:root[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

:root[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}

/* ---------- Language switch (header dropdown) ---------- */
.lang-switch {
  position: relative;
}

.lang-btn {
  width: auto;
  border-radius: var(--radius-pill);
  padding: 6px 12px 6px 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-2);
}

.lang-flag {
  font-size: 1.05rem;
  line-height: 1;
}

.lang-code {
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.chevron {
  color: var(--text-soft);
  transition: transform var(--transition-fast);
}

.lang-btn[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 240px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px -12px hsla(var(--shadow-color) / 0.35);
  padding: 8px;
  display: grid;
  gap: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 50;
}

.lang-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  text-align: left;
  border: 1.5px solid transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.lang-option:hover:not(.lang-option--soon) {
  background: var(--surface-2);
}

.lang-option.is-selected {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
}

.lang-option--soon {
  opacity: 0.5;
  cursor: default;
}

.lang-texts {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  flex: 1 1 auto;
}

.lang-native {
  font-weight: 700;
  font-size: 0.9rem;
}

.lang-en-name {
  font-size: 0.75rem;
  color: var(--text-soft);
}

.lang-option-check {
  color: var(--accent);
  flex-shrink: 0;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.lang-option.is-selected .lang-option-check {
  opacity: 1;
  transform: scale(1);
}

/* ---------- Hero language grid ---------- */
.hero-lang-picker {
  margin-top: 36px;
}

.hero-lang-label {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  margin-bottom: 12px;
}

.lang-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 10px;
  max-width: 640px;
}

@media (max-width: 767px) {
  .hero-lang-picker {
    margin-top: 28px;
  }

  .lang-card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    max-width: 100%;
  }

  .lang-card {
    padding: 12px 6px 10px;
    border-radius: 14px;
  }

  .lang-card-flag {
    font-size: 1.45rem;
  }

  .lang-card-name {
    font-size: 0.68rem;
    line-height: 1.2;
    text-align: center;
  }

  .lang-card-check {
    top: 6px;
    right: 6px;
    width: 14px;
    height: 14px;
  }
}

@media (max-width: 380px) {
  .lang-card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.lang-menu {
  max-height: min(70vh, 420px);
  overflow-y: auto;
}

.lang-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 10px 14px;
  border-radius: 16px;
  background: var(--surface);
  border: 2px solid var(--surface-border);
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.lang-card:hover:not(.lang-card--soon) {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--surface-border));
}

.lang-card-flag {
  font-size: 2rem;
  line-height: 1;
}

.lang-card-name {
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.lang-card-check {
  position: absolute;
  top: 8px;
  right: 8px;
  color: var(--accent);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.lang-card.is-active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent);
}

.lang-card.is-active .lang-card-name {
  color: var(--text);
}

.lang-card.is-active .lang-card-check {
  opacity: 1;
  transform: scale(1);
}

.lang-card--soon {
  opacity: 0.5;
  cursor: default;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: 56px 40px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: var(--glow-opacity);
  pointer-events: none;
  z-index: 0;
}

.hero-glow--one {
  width: 480px;
  height: 480px;
  background: var(--color-red-400);
  top: -180px;
  right: -140px;
}

.hero-glow--two {
  width: 380px;
  height: 380px;
  background: var(--color-gold);
  opacity: calc(var(--glow-opacity) * 0.5);
  bottom: -160px;
  left: -120px;
}

.hero-glow--three {
  width: 520px;
  height: 520px;
  background: var(--color-red-400);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px 2px var(--color-red-glow);
}

.hero h1 {
  font-size: clamp(2.1rem, 5.6vw, 3.4rem);
  margin-bottom: 20px;
}

.text-accent {
  color: var(--accent);
  position: relative;
}

.hero-sub {
  font-size: 1.1rem;
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 20px;
}

.hero-start-btn {
  align-self: flex-start;
  width: 100%;
  max-width: 320px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.hero-store-badges {
  margin-bottom: 0;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 155px;
  height: 48px;
  line-height: 0;
  border-radius: 8px;
  flex-shrink: 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.store-badge:hover {
  transform: translateY(-2px);
  opacity: 0.92;
}

.store-badge img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.store-badge img.store-badge__apple-dark {
  display: none;
}

[data-theme="dark"] .store-badge img.store-badge__apple-light {
  display: none;
}

[data-theme="dark"] .store-badge img.store-badge__apple-dark {
  display: block;
}

.store-badge--sm {
  width: 130px;
  height: 40px;
}

.hero-microcopy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 0.86rem;
  color: var(--text-soft);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-pill);
  padding: 4px 2px;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.hero-microcopy:hover {
  color: var(--accent);
  transform: translateY(-1px);
}

.hero-microcopy:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.hero-microcopy svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* ---------- Phone mockups ---------- */
.hero-visual {
  display: flex;
  justify-content: center;
  overflow: visible;
}

.phones-stack {
  position: relative;
  width: min(100%, 380px);
  min-height: 420px;
  padding-block: 20px 60px;
  margin-inline: auto;
}

@media (min-width: 600px) and (max-width: 959px) {
  .phones-stack {
    min-height: 370px;
    width: min(100%, 320px);
    padding-block: 10px 40px;
  }

  .phones-stack .phone-mock {
    width: 200px;
  }

  .phones-stack .phone-mock--back {
    left: 0;
    top: 8px;
    transform: rotate(-8deg);
  }

  .phones-stack .phone-mock--front {
    right: 0;
    top: 56px;
    transform: rotate(7deg);
  }
}

@media (max-width: 599px) {
  .phones-stack {
    position: relative;
    min-height: 300px;
    width: min(100%, 280px);
    padding-block: 8px 48px;
    margin-inline: auto;
  }

  .phones-stack .phone-mock {
    position: absolute;
    width: min(44vw, 168px);
  }

  .phones-stack .phone-mock--back {
    left: 0;
    top: 6px;
    transform: rotate(-8deg);
    opacity: 0.94;
  }

  .phones-stack .phone-mock--front {
    right: 0;
    top: 44px;
    transform: rotate(7deg);
  }

  .hero-badge--free {
    left: 0;
    bottom: 0;
  }

  .hero-badge--languages {
    right: 0;
    bottom: -6px;
  }
}

.phone-mock {
  width: 230px;
  border-radius: 34px;
  padding: 10px;
  background: linear-gradient(160deg, #2b2b2b, #101010);
  box-shadow: 0 30px 60px -20px hsla(var(--shadow-color) / 0.5);
  position: relative;
}

.phone-mock--back {
  position: absolute;
  left: 0;
  top: 0;
  transform: rotate(-9deg);
  z-index: 1;
  opacity: 0.94;
}

.phone-mock--front {
  position: absolute;
  right: 0;
  top: 70px;
  transform: rotate(8deg);
  z-index: 2;
  box-shadow: 0 40px 70px -18px hsla(0, 90%, 40%, 0.35);
}

.phone-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 70px;
  height: 16px;
  background: #101010;
  border-radius: 0 0 14px 14px;
  z-index: 3;
}

.phone-screen {
  border-radius: 24px;
  overflow: hidden;
  padding: 26px 14px 16px;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.phone-screen--light {
  background: #fdfaf9;
  color: #221d1b;
}

.phone-screen--dark {
  background: #141313;
  color: #fdfaf9;
}

.mock-app-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.78rem;
}

.mock-crown {
  color: var(--color-red-500);
  font-size: 1rem;
}

.mock-logo {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  flex-shrink: 0;
}

.mock-progress {
  height: 6px;
  border-radius: 999px;
  background: rgba(128, 128, 128, 0.22);
  overflow: hidden;
}

.mock-progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-red-500), var(--color-red-300));
}

.mock-road {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 6px;
}

.mock-road--vertical {
  flex-direction: column;
  align-items: flex-start;
}

.mock-node {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(128, 128, 128, 0.14);
  font-size: 1.1rem;
}

.mock-node--done {
  background: var(--color-red-500);
  color: #fff;
}

.mock-node--active {
  background: var(--color-gold);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-gold) 30%, transparent);
}

.mock-question {
  font-size: 0.85rem;
  font-weight: 700;
  margin: 6px 0 4px;
}

.mock-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-option {
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(128, 128, 128, 0.14);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
}

.mock-option--correct {
  background: color-mix(in srgb, #2e7d32 30%, transparent);
  color: #7be08a;
}

.mock-xp {
  margin-top: auto;
  align-self: flex-end;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--color-gold);
  background: rgba(246, 209, 85, 0.15);
  padding: 5px 10px;
  border-radius: 999px;
}

.mock-lesson-title {
  font-weight: 800;
  font-size: 0.85rem;
  margin: 4px 0 0;
}

.mock-lesson-body {
  font-size: 0.76rem;
  line-height: 1.5;
}

.mock-chip {
  align-self: flex-start;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-gold) 25%, transparent);
  color: #7a5c00;
}

.phone-screen--dark .mock-chip {
  color: var(--color-gold);
}

.mock-explore-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 4px;
}

.mock-explore-item {
  background: rgba(128, 128, 128, 0.14);
  border-radius: 14px;
  padding: 14px 8px;
  text-align: center;
  font-size: 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.mock-explore-item span {
  font-size: 0.65rem;
  font-weight: 700;
}

.hero-badge {
  position: absolute;
  bottom: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 800;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  box-shadow: 0 12px 30px -10px hsla(var(--shadow-color) / 0.3);
  z-index: 3;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

a.hero-badge:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.hero-badge--free {
  left: 0;
  color: var(--accent);
  cursor: pointer;
}

.hero-badge--languages {
  right: 30px;
  bottom: -10px;
  color: var(--text-muted);
}

.scroll-cue {
  display: none;
}

@media (min-width: 700px) {
  .scroll-cue {
    display: flex;
    justify-content: center;
    margin-top: 24px;
  }
  .scroll-cue span {
    width: 22px;
    height: 36px;
    border: 2px solid var(--surface-border);
    border-radius: 999px;
    position: relative;
  }
  .scroll-cue span::before {
    content: "";
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    border-radius: 999px;
    background: var(--accent);
    animation: scrollCue 1.8s infinite;
  }
}

@keyframes scrollCue {
  0% { opacity: 1; transform: translate(-50%, 0); }
  70% { opacity: 0; transform: translate(-50%, 14px); }
  100% { opacity: 0; }
}

@media (min-width: 960px) {
  .hero-inner {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

/* ---------- Problem & Solution ---------- */
.ps-grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 760px) {
  .ps-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.ps-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.ps-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.ps-card--problem .ps-icon {
  background: color-mix(in srgb, #b3261e 14%, transparent);
  color: #b3261e;
}

.ps-card--solution .ps-icon {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}

.ps-card h3 {
  font-size: 1.2rem;
}

/* ---------- How it works / phases ---------- */
.phase-timeline {
  display: grid;
  gap: 20px;
  counter-reset: phase;
}

@media (min-width: 720px) {
  .phase-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .phase-timeline {
    grid-template-columns: repeat(4, 1fr);
  }
}

.phase-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.phase-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px -20px hsla(var(--shadow-color) / 0.35);
}

.phase-index {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.phase-card h3 {
  font-size: 1.15rem;
}

.phase-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.phase-tags li {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  color: var(--text-muted);
}

.phase-card--final {
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent) 10%, var(--surface)), var(--surface));
  border-color: color-mix(in srgb, var(--accent) 40%, var(--surface-border));
}

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px -18px hsla(var(--shadow-color) / 0.35);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.05rem;
}

.feature-card p {
  font-size: 0.92rem;
  margin-bottom: 0;
}

/* ---------- App previews ---------- */
.preview-carousel {
  position: relative;
}

.preview-carousel-hint {
  display: none;
  margin: 0 0 12px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-soft);
}

.preview-dots {
  display: none;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.preview-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--surface-border);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.preview-dot.is-active {
  background: var(--accent);
  transform: scale(1.15);
}

.preview-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: end;
}

.preview-card {
  margin: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
  height: 100%;
}

.phone-mock--preview {
  width: 230px;
  max-width: 100%;
  margin-inline: auto;
  background: linear-gradient(160deg, #2b2b2b, #101010);
  aspect-ratio: 9 / 16;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.phone-mock--preview .phone-screen {
  background: var(--surface);
  color: var(--text);
  flex: 1;
  min-height: 0 !important;
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 12px 14px;
}

.phone-mock--preview .mock-node,
.phone-mock--preview .mock-option,
.phone-mock--preview .mock-explore-item {
  background: var(--surface-2);
  color: var(--text);
  font-size: 0.72rem;
}

.phone-mock--preview .mock-app-bar {
  font-size: 0.68rem;
}

.phone-mock--preview .mock-lesson-title {
  font-size: 0.82rem;
}

.phone-mock--preview .mock-lesson-body {
  font-size: 0.74rem;
  line-height: 1.45;
}

.phone-mock--preview .mock-chip {
  align-self: flex-start;
  font-size: 0.66rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-gold) 14%, var(--surface-2));
  color: #9a7200;
  border: 1px solid color-mix(in srgb, var(--color-gold) 28%, var(--surface-border));
}

:root[data-theme="dark"] .phone-mock--preview .mock-chip {
  background: color-mix(in srgb, var(--color-gold) 16%, var(--surface-2));
  color: #f6d155;
  border-color: color-mix(in srgb, var(--color-gold) 32%, var(--surface-border));
}

.phone-mock--preview .mock-btn-secondary {
  margin-top: auto;
  padding: 9px 12px;
  border-radius: 12px;
  border: 1.5px solid var(--surface-border);
  background: var(--surface-2);
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 700;
  text-align: center;
  width: 100%;
}

.phone-mock--preview .mock-question,
.phone-mock--preview .mock-lesson-body--extra {
  font-size: 0.72rem;
  line-height: 1.35;
}

.phone-mock--preview .mock-node--done {
  background: var(--color-red-500);
  color: #fff;
}

.phone-mock--preview .mock-node--active {
  background: var(--color-gold);
}

.phone-mock--preview .mock-feedback {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 8px 10px;
  border-radius: 10px;
  text-align: center;
}

.phone-mock--preview .mock-feedback--correct {
  background: color-mix(in srgb, #1b8a4a 14%, var(--surface));
  color: #1b8a4a;
}

.phone-mock--preview .mock-xp {
  align-self: center;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--color-gold);
}

.phone-mock--preview .mock-explore-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.phone-mock--preview .mock-explore-item {
  padding: 10px 6px;
  font-size: 1.1rem;
}

.phone-mock--preview .mock-road--vertical {
  gap: 8px;
}

.phone-mock--preview .mock-node {
  width: 34px;
  height: 34px;
  font-size: 0.95rem;
}

.preview-card figcaption {
  margin-top: 14px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  min-height: 2.6em;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

@media (max-width: 759px) {
  .preview-carousel-hint {
    display: block;
  }

  .preview-dots {
    display: flex;
  }

  .preview-grid {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 20px;
    padding: 4px 20px 12px;
    margin-inline: -20px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .preview-grid::-webkit-scrollbar {
    display: none;
  }

  .preview-card {
    flex: 0 0 min(78vw, 230px);
    scroll-snap-align: center;
    scroll-snap-stop: always;
  }

  .preview-card .phone-mock--preview {
    width: min(78vw, 230px);
    max-width: 230px;
  }
}

/* ---------- Trust ---------- */
.trust-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, 1fr);
  margin-bottom: 40px;
}

@media (min-width: 760px) {
  .trust-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.trust-card {
  text-align: center;
  padding: 26px 16px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--surface-border);
}

.trust-stat {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 6px;
}

.trust-card p {
  font-size: 0.86rem;
  margin: 0;
}

.legal-note {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--surface-border);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-soft);
  text-align: center;
  max-width: 52ch;
  margin-inline: auto;
}

.legal-note a {
  color: var(--accent);
  font-weight: 600;
}

/* ---------- FAQ / Accordion ---------- */
.accordion {
  display: grid;
  gap: 12px;
}

.accordion-item {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-item h3 {
  margin: 0;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  text-align: left;
  font-weight: 700;
  font-size: 0.98rem;
}

.accordion-chevron {
  flex-shrink: 0;
  color: var(--accent);
  transition: transform var(--transition-fast);
}

.accordion-trigger[aria-expanded="true"] .accordion-chevron {
  transform: rotate(180deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-med);
}

.accordion-panel p {
  padding: 0 22px 20px;
  margin: 0;
  font-size: 0.92rem;
}

/* ---------- Final CTA ---------- */
.final-cta {
  position: relative;
  text-align: center;
  overflow: hidden;
  background: var(--bg-alt);
}

.final-cta-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.final-cta-logo {
  margin-inline: auto;
  margin-bottom: 24px;
  border-radius: 18px;
}

.final-cta h2 {
  font-size: clamp(1.6rem, 3.6vw, 2.3rem);
}

.final-cta .hero-ctas {
  justify-content: center;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--surface-border);
  padding-top: 56px;
}

.footer-inner {
  display: grid;
  gap: 40px;
}

@media (min-width: 760px) {
  .footer-inner {
    grid-template-columns: 1.2fr 2fr;
  }
}

.footer-brand p {
  margin-top: 14px;
  max-width: 320px;
  font-size: 0.9rem;
}

.footer-nav {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, 1fr);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  margin-top: 48px;
  padding-block: 22px;
  border-top: 1px solid var(--surface-border);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-soft);
}

.footer-bottom p {
  margin: 0;
}

/* ---------- Legal pages (privacy / terms) ---------- */
.legal-page {
  padding-block: 48px var(--space-section);
}

.legal-page .back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 28px;
}

.legal-content {
  max-width: 760px;
  margin-inline: auto;
}

.legal-content h1 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  margin-bottom: 8px;
}

.legal-content .legal-updated {
  color: var(--text-soft);
  font-size: 0.85rem;
  margin-bottom: 36px;
}

.legal-content h2 {
  font-size: 1.25rem;
  margin-top: 36px;
}

.legal-content p,
.legal-content li {
  color: var(--text-muted);
  font-size: 0.96rem;
}

.legal-content ul {
  list-style: disc;
  padding-left: 1.4em;
  margin-bottom: 1em;
}

.legal-content li {
  margin-bottom: 0.4em;
}

.legal-content a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
}

/* ---------- Floating mobile CTA ---------- */
.floating-cta {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 90;
  width: auto;
  max-width: calc(100% - 32px);
  margin-inline: auto;
  transform: translateY(140%);
  transition: transform var(--transition-med);
}

.floating-cta.is-visible {
  transform: translateY(0);
}

@media (max-width: 899px) {
  body {
    padding-bottom: 84px;
  }
}

@media (min-width: 900px) {
  .floating-cta {
    display: none;
  }
}

/* ---------- Scroll-triggered animations ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  transition-delay: calc(var(--stagger, 0) * 80ms);
}

[data-animate="fade-in"] {
  transform: translateY(0);
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-animate] {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Disclaimer banner ---------- */
.disclaimer-banner {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 120;
  padding: 14px 0 calc(14px + env(safe-area-inset-bottom, 0px));
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border-top: 1px solid var(--surface-border);
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(10px);
}

.disclaimer-banner.is-visible {
  display: block;
}

.disclaimer-banner[hidden] {
  display: none !important;
}

.disclaimer-banner-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 16px;
}

.disclaimer-banner-text {
  margin: 0;
  flex: 1 1 240px;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--text-muted);
}

.disclaimer-banner-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  flex-shrink: 0;
}

.disclaimer-banner-link {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.disclaimer-banner .btn-sm {
  padding: 10px 16px;
  font-size: 0.84rem;
}

body.has-disclaimer-banner .floating-cta {
  bottom: calc(88px + env(safe-area-inset-bottom, 0px));
}

@media (max-width: 759px) {
  body.has-disclaimer-banner .floating-cta.is-visible {
    bottom: calc(96px + env(safe-area-inset-bottom, 0px));
  }
}

/* RTL layout for Hebrew and Arabic */
html[dir="rtl"] .nav-inner,
html[dir="rtl"] .hero-inner,
html[dir="rtl"] .section-inner,
html[dir="rtl"] .footer-inner {
  direction: rtl;
}

html[dir="rtl"] .lang-option,
html[dir="rtl"] .lang-card {
  text-align: right;
}