/* ==========================================================================
   Español Plovdiv — Main Stylesheet
   Colour tokens are theme-scoped via [data-theme] on <html>.
   Remove the "Dev Tools" block at the bottom before production.
   ========================================================================== */

/* --- Base tokens (overridden per theme) --- */
:root {
  --font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-sans: var(--font-family);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.09);
  --header-height: 108px;
  --container: 1200px;
  --container-gutter: clamp(1.25rem, 5vw, 2.5rem);
  --section-space: clamp(4rem, 9vw, 6.5rem);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --bp-sm: 480px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --touch-min: 44px;
}

/* --- Theme: Coral (default) --- */
[data-theme="coral"],
:root:not([data-theme]) {
  --color-primary: #c0392b;
  --color-primary-hover: #a93226;
  --color-primary-light: #fdecea;
  --color-accent: #e67e22;
  --color-bg: #faf8f6;
  --color-bg-alt: #ffffff;
  --color-bg-muted: #f3efeb;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-border: #e0d8d0;
  --color-header-bg: rgba(255, 255, 255, 0.92);
  --color-footer-bg: #2c1810;
  --color-footer-text: #f5ebe3;
  --color-footer-muted: #c4a882;
  --color-hero-overlay: rgba(44, 24, 16, 0.55);
}

[data-theme="coral"][data-mode="dark"],
:root:not([data-theme])[data-mode="dark"] {
  --color-primary: #e74c3c;
  --color-primary-hover: #ff6b5a;
  --color-primary-light: #3d1f1a;
  --color-accent: #f39c12;
  --color-bg: #141010;
  --color-bg-alt: #1e1814;
  --color-bg-muted: #2a221c;
  --color-text: #f5f0eb;
  --color-text-muted: #a89888;
  --color-border: #3d332a;
  --color-header-bg: rgba(20, 16, 16, 0.94);
  --color-footer-bg: #0d0908;
  --color-footer-text: #f5ebe3;
  --color-footer-muted: #8a7560;
  --color-hero-overlay: rgba(0, 0, 0, 0.65);
}

/* --- Theme: Ocean --- */
[data-theme="ocean"] {
  --color-primary: #1a5276;
  --color-primary-hover: #154360;
  --color-primary-light: #eaf2f8;
  --color-accent: #2980b9;
  --color-bg: #f4f8fb;
  --color-bg-alt: #ffffff;
  --color-bg-muted: #e8f0f6;
  --color-text: #1a2332;
  --color-text-muted: #4a5f73;
  --color-border: #c8d8e4;
  --color-header-bg: rgba(255, 255, 255, 0.92);
  --color-footer-bg: #0f2438;
  --color-footer-text: #e8f0f6;
  --color-footer-muted: #7a9bb5;
  --color-hero-overlay: rgba(15, 36, 56, 0.6);
}

[data-theme="ocean"][data-mode="dark"] {
  --color-primary: #3498db;
  --color-primary-hover: #5dade2;
  --color-primary-light: #1a2f42;
  --color-accent: #5dade2;
  --color-bg: #0c1218;
  --color-bg-alt: #141c26;
  --color-bg-muted: #1c2836;
  --color-text: #e8f0f6;
  --color-text-muted: #8a9db0;
  --color-border: #2a3d50;
  --color-header-bg: rgba(12, 18, 24, 0.94);
  --color-footer-bg: #060c12;
  --color-footer-text: #e8f0f6;
  --color-footer-muted: #5a7a94;
  --color-hero-overlay: rgba(0, 0, 0, 0.65);
}

/* --- Theme: Forest --- */
[data-theme="forest"] {
  --color-primary: #0d6e6e;
  --color-primary-hover: #0a5555;
  --color-primary-light: #e6f5f5;
  --color-accent: #27ae60;
  --color-bg: #f4faf8;
  --color-bg-alt: #ffffff;
  --color-bg-muted: #e8f2ef;
  --color-text: #142420;
  --color-text-muted: #4a635c;
  --color-border: #c4ddd6;
  --color-header-bg: rgba(255, 255, 255, 0.92);
  --color-footer-bg: #0a2824;
  --color-footer-text: #e8f2ef;
  --color-footer-muted: #7aab9e;
  --color-hero-overlay: rgba(10, 40, 36, 0.58);
}

[data-theme="forest"][data-mode="dark"] {
  --color-primary: #1abc9c;
  --color-primary-hover: #48c9b0;
  --color-primary-light: #143028;
  --color-accent: #2ecc71;
  --color-bg: #0a100e;
  --color-bg-alt: #121a18;
  --color-bg-muted: #1a2622;
  --color-text: #e8f2ef;
  --color-text-muted: #8aa89e;
  --color-border: #2a3d36;
  --color-header-bg: rgba(10, 16, 14, 0.94);
  --color-footer-bg: #060e0c;
  --color-footer-text: #e8f2ef;
  --color-footer-muted: #5a8878;
  --color-hero-overlay: rgba(0, 0, 0, 0.65);
}

/* --- Theme: Violet --- */
[data-theme="violet"] {
  --color-primary: #6c3483;
  --color-primary-hover: #5b2c6f;
  --color-primary-light: #f4ecf7;
  --color-accent: #9b59b6;
  --color-bg: #faf8fc;
  --color-bg-alt: #ffffff;
  --color-bg-muted: #f0ebf5;
  --color-text: #1e1424;
  --color-text-muted: #5c4a6a;
  --color-border: #ddd0e8;
  --color-header-bg: rgba(255, 255, 255, 0.92);
  --color-footer-bg: #1a0f24;
  --color-footer-text: #f0ebf5;
  --color-footer-muted: #a088b8;
  --color-hero-overlay: rgba(26, 15, 36, 0.58);
}

[data-theme="violet"][data-mode="dark"] {
  --color-primary: #bb8fce;
  --color-primary-hover: #d2b4de;
  --color-primary-light: #2a1a36;
  --color-accent: #af7ac5;
  --color-bg: #100c14;
  --color-bg-alt: #1a1420;
  --color-bg-muted: #241c2e;
  --color-text: #f0ebf5;
  --color-text-muted: #9a88aa;
  --color-border: #3a2e48;
  --color-header-bg: rgba(16, 12, 20, 0.94);
  --color-footer-bg: #08060c;
  --color-footer-text: #f0ebf5;
  --color-footer-muted: #786090;
  --color-hero-overlay: rgba(0, 0, 0, 0.65);
}

/* --- Theme: Amber --- */
[data-theme="amber"] {
  --color-primary: #b7770d;
  --color-primary-hover: #9c6509;
  --color-primary-light: #fef5e7;
  --color-accent: #d4ac0d;
  --color-bg: #fdfaf4;
  --color-bg-alt: #ffffff;
  --color-bg-muted: #f8f0e0;
  --color-text: #241a08;
  --color-text-muted: #6a5830;
  --color-border: #e8dcc0;
  --color-header-bg: rgba(255, 255, 255, 0.92);
  --color-footer-bg: #241808;
  --color-footer-text: #f8f0e0;
  --color-footer-muted: #b89860;
  --color-hero-overlay: rgba(36, 24, 8, 0.58);
}

[data-theme="amber"][data-mode="dark"] {
  --color-primary: #f39c12;
  --color-primary-hover: #f5b041;
  --color-primary-light: #362810;
  --color-accent: #f1c40f;
  --color-bg: #141008;
  --color-bg-alt: #1e1810;
  --color-bg-muted: #2a2218;
  --color-text: #f8f0e0;
  --color-text-muted: #a89870;
  --color-border: #3d3220;
  --color-header-bg: rgba(20, 16, 8, 0.94);
  --color-footer-bg: #0c0804;
  --color-footer-text: #f8f0e0;
  --color-footer-muted: #887048;
  --color-hero-overlay: rgba(0, 0, 0, 0.65);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  letter-spacing: -0.011em;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.nav-open {
  overflow: hidden;
}

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

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

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

ul {
  list-style: none;
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-family);
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 5.5vw, 3.75rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.375rem); font-weight: 600; }
h3 { font-size: clamp(1.2rem, 2vw, 1.375rem); font-weight: 600; }

.section-title {
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  line-height: 1.6;
  margin-bottom: 2.5rem;
  max-width: 36rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 4rem;
  padding: 1.375rem 2.75rem;
  font-family: var(--font-family);
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
  border-radius: 0;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition),
    opacity 0.15s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.btn:active {
  opacity: 0.88;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: currentColor;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-ghost:focus-visible {
  outline-color: #fff;
}

/* --- Header (template-part: header) --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  background: var(--color-header-bg);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  transition: background var(--transition);
}

.site-header__inner {
  display: flex;
  align-items: center;
  position: relative;
  width: 100%;
  min-height: var(--header-height);
  padding-inline: max(var(--container-gutter), 2rem);
  padding-block: 1.25rem;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.site-logo {
  flex-shrink: 0;
  z-index: 1;
  font-family: var(--font-family);
  font-size: clamp(1.35rem, 2.5vw, 1.625rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  min-width: 0;
  line-height: 1.2;
  transition: color var(--transition);
}

.site-logo:hover {
  color: var(--color-primary);
}

.site-logo span {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: clamp(0.8125rem, 1.8vw, 0.9375rem);
  letter-spacing: 0;
  display: block;
  margin-top: 0.3rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.main-nav {
  min-width: 0;
}

.main-nav ul {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(2rem, 4vw, 3rem);
}

.main-nav a {
  position: relative;
  display: block;
  padding: 0.5rem 0;
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.main-nav a:hover {
  color: var(--color-text);
}

.main-nav a.active {
  color: var(--color-text);
  font-weight: 600;
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.header-actions {
  flex-shrink: 0;
  margin-left: auto;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Language picker */
.lang-picker {
  position: relative;
}

.lang-picker__toggle {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 0.85rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}

.lang-picker__toggle:hover {
  color: var(--color-text);
  background: var(--color-bg-muted);
}

.lang-picker__menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 168px;
  padding: 0.35rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  z-index: 10;
}

.lang-picker.is-open .lang-picker__menu {
  display: block;
}

.lang-picker__menu button {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-family);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  text-align: left;
  transition: background var(--transition);
}

.lang-picker__menu button:hover {
  background: var(--color-bg-muted);
}

.lang-picker__menu button.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Dark mode toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-bg-muted);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  width: 18px;
  height: 18px;
}

[data-mode="light"] .theme-toggle .icon-moon,
[data-mode="dark"] .theme-toggle .icon-sun {
  display: none;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-shrink: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text);
}

.nav-toggle:hover {
  background: var(--color-bg-muted);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero (template-part: hero) --- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100dvh - var(--header-height));
  display: flex;
  align-items: center;
  background:
    linear-gradient(var(--color-hero-overlay), var(--color-hero-overlay)),
    url("https://images.unsplash.com/photo-1523240795612-9a054b0db644?w=1600&q=80") center / cover no-repeat;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 42rem;
  color: #fff;
  padding-block: clamp(3rem, 8vw, 5rem);
}

.hero h1 {
  color: #fff;
  margin-bottom: 1.25rem;
  letter-spacing: -0.035em;
}

.hero p {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  opacity: 0.9;
  margin-bottom: 2.5rem;
  line-height: 1.75;
  max-width: 36rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

/* --- Page header (inner pages) --- */
.page-header {
  background: var(--color-primary-light);
  padding: clamp(3rem, 7vw, 4.5rem) 0;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.page-header h1 {
  color: var(--color-primary);
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin-top: 0.75rem;
  max-width: 36rem;
}

/* --- Content sections --- */
.page-content {
  padding: var(--section-space) 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 4.5rem);
  align-items: center;
}

.content-grid.reverse {
  direction: rtl;
}

.content-grid.reverse > * {
  direction: ltr;
}

.placeholder-image {
  aspect-ratio: 4 / 5;
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
}

.card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

/* --- Spanish Lessons page --- */
.lessons-layout {
  display: grid;
  grid-template-columns: 1fr min(19rem, 32%);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.lessons-intro {
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  max-width: 40rem;
}

.lesson-block {
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.lesson-block:last-of-type {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.lesson-block p {
  color: var(--color-text-muted);
  max-width: 40rem;
}

.lessons-cta {
  margin-top: 2.5rem;
}

.lessons-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

.course-index {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.course-index:hover {
  box-shadow: var(--shadow-md);
}

.course-index::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.course-index__eyebrow {
  padding: 1.35rem 1.35rem 0;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.course-index__title {
  padding: 0.35rem 1.35rem 1.1rem;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.course-index__table {
  width: 100%;
  border-collapse: collapse;
}

.course-index__table tr {
  border-top: 1px solid var(--color-border);
  transition: background var(--transition);
}

.course-index__table tr:hover {
  background: var(--color-primary-light);
}

.course-index__dot {
  width: 2.5rem;
  padding: 0.9rem 1.25rem 0.9rem 1.35rem;
  vertical-align: middle;
}

.course-index__dot::before {
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-border);
  transition: background var(--transition), transform var(--transition);
}

.course-index__table tr:hover .course-index__dot::before {
  background: var(--color-primary);
  transform: scale(1.25);
}

.course-index__link {
  padding: 0;
  vertical-align: middle;
}

.course-index__link a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1.35rem 0.9rem 0.5rem;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  line-height: 1.3;
  text-decoration: none;
  transition: color var(--transition);
}

.course-index__table tr:hover .course-index__link a {
  color: var(--color-primary);
}

.course-index__link svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--transition), transform var(--transition);
}

.course-index__table tr:hover .course-index__link svg {
  opacity: 1;
  transform: translateX(0);
}

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

/* --- Contact page --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-info-item__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
}

.contact-info-item strong {
  display: block;
  margin-bottom: 0.15rem;
}

.contact-info-item span,
.contact-info-item a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.map-container {
  margin-top: 2rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  aspect-ratio: 16 / 9;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* --- Form --- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-family);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
}

/* --- Full footer (template-part: footer) --- */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding-top: clamp(3rem, 6vw, 4.5rem);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
  font-family: var(--font-family);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 1rem;
}

.footer-logo span {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-footer-muted);
  margin-top: 0.35rem;
  letter-spacing: 0;
}

.footer-col h4 {
  color: #fff;
  font-family: var(--font-family);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--color-footer-muted);
  font-size: 1rem;
  font-weight: 500;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact p {
  color: var(--color-footer-muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.footer-contact a {
  color: var(--color-footer-muted);
}

.footer-contact a:hover {
  color: #fff;
}

.footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0 max(1.25rem, env(safe-area-inset-bottom, 0px));
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-bar__copy {
  font-size: 0.875rem;
  color: var(--color-footer-muted);
}

.footer-bar__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-footer-muted);
  transition: background var(--transition), color var(--transition);
}

.social-link:hover {
  background: var(--color-primary);
  color: #fff;
}

.scroll-top {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--color-footer-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.scroll-top:hover {
  background: var(--color-primary);
  color: #fff;
}

.scroll-top svg {
  width: 18px;
  height: 18px;
}

/* --- FAQ / Privacy placeholder --- */
.prose {
  max-width: 720px;
}

.prose p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.prose h2 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

/* ==========================================================================
   Responsive — mobile-first breakpoints
   sm ≤480px · md ≤768px · lg ≤1024px
   ========================================================================== */

/* Tablet */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer-grid .footer-col:first-child {
    grid-column: 1 / -1;
  }

  .contact-layout,
  .lessons-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .lessons-sidebar {
    position: static;
    order: -1;
  }
}

/* Mobile / small tablet */
@media (max-width: 768px) {
  :root {
    --header-height: 84px;
  }

  .site-header__inner {
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1.25rem;
    padding-block: 1rem;
  }

  .site-logo {
    flex: 1 1 auto;
    max-width: calc(100% - 7.5rem);
  }

  .nav-toggle {
    display: flex;
    order: 3;
    margin-left: 0;
  }

  .header-actions {
    order: 2;
    margin-left: auto;
    gap: 0;
  }

  .main-nav {
    display: none;
    order: 4;
    flex: 1 1 100%;
    width: 100%;
    grid-column: unset;
    justify-self: unset;
    padding: 1rem 0 0.5rem;
    border-top: 1px solid var(--color-border);
    margin-top: 0.5rem;
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
  }

  .main-nav a {
    padding: 1.125rem 0;
    min-height: var(--touch-min);
    font-size: 1.125rem;
    display: flex;
    align-items: center;
  }

  .main-nav a.active::after {
    display: none;
  }

  .main-nav a.active {
    color: var(--color-primary);
    padding-left: 1rem;
    border-left: 3px solid var(--color-primary);
  }

  .main-nav a:hover {
    color: var(--color-text);
  }

  .lang-picker__toggle {
    min-height: var(--touch-min);
    min-width: var(--touch-min);
    justify-content: center;
    padding-inline: 0.5rem;
  }

  .theme-toggle {
    width: var(--touch-min);
    height: var(--touch-min);
  }

  .hero__content {
    padding-block: 2.5rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .page-header {
    padding: 2rem 0;
  }

  .page-content {
    padding: 2.5rem 0 3rem;
  }

  .section-subtitle {
    margin-bottom: 1.5rem;
  }

  .content-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .content-grid.reverse {
    direction: ltr;
  }

  .placeholder-image {
    aspect-ratio: 16 / 10;
    max-height: 280px;
  }

  .card {
    padding: 1.25rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-bottom: 2rem;
  }

  .footer-grid .footer-col:first-child {
    grid-column: auto;
  }

  .site-footer {
    padding-top: 2.5rem;
  }

  .footer-bar {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem 0;
  }

  .footer-bar__actions {
    justify-content: center;
  }

  .social-link,
  .scroll-top {
    width: var(--touch-min);
    height: var(--touch-min);
  }

  .dev-panel {
    bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    left: max(0.75rem, env(safe-area-inset-left, 0px));
  }

  .dev-panel__toggle {
    margin-left: auto;
  }

  .dev-panel__menu {
    right: 0;
    left: 0;
    width: auto;
  }
}

/* Small phones */
@media (max-width: 480px) {
  .hero {
    min-height: min(calc(100dvh - var(--header-height)), 720px);
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .btn {
    min-height: 3.5rem;
    padding: 1.25rem 1.75rem;
  }

  .lang-picker__toggle .lang-code {
    display: none;
  }

  .form-group input,
  .form-group textarea {
    font-size: 16px;
  }

  .contact-info-item span,
  .contact-info-item a {
    word-break: break-word;
  }

  .map-container {
    aspect-ratio: 4 / 3;
  }
}

/* Large screens — centred nav, logo left, actions right */
@media (min-width: 769px) {
  .site-header__inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1.5rem;
  }

  .site-logo {
    grid-column: 1;
    justify-self: start;
  }

  .main-nav {
    grid-column: 2;
    justify-self: center;
    display: block !important;
  }

  .header-actions {
    grid-column: 3;
    justify-self: end;
    margin-left: 0;
  }

  .nav-toggle {
    display: none;
  }
}

/* ==========================================================================
   DEV TOOLS — Remove this block + dev-tools.js before production
   ========================================================================== */
.dev-panel {
  position: fixed;
  bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
  right: max(1.25rem, env(safe-area-inset-right, 0px));
  z-index: 9999;
  font-size: 0.8rem;
}

.dev-panel__toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.85rem;
  background: #1a1a2e;
  color: #eee;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  font-size: 0.8rem;
  font-weight: 600;
}

.dev-panel__menu {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  right: 0;
  width: 220px;
  padding: 1rem;
  background: #1a1a2e;
  color: #eee;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.dev-panel.is-open .dev-panel__menu {
  display: block;
}

.dev-panel__label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888;
  margin-bottom: 0.5rem;
}

.dev-panel__themes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.dev-panel__theme-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.dev-panel__theme-btn:hover {
  transform: scale(1.1);
}

.dev-panel__theme-btn.is-active {
  border-color: #fff;
  box-shadow: 0 0 0 2px #1a1a2e;
}

.dev-panel__mode {
  display: flex;
  gap: 0.4rem;
}

.dev-panel__mode-btn {
  flex: 1;
  padding: 0.45rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  color: #ccc;
  cursor: pointer;
  font-size: 0.75rem;
  transition: background 0.15s ease;
}

.dev-panel__mode-btn.is-active {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}
