/* ==========================================================================
   4everLearn — "Atelier" concept design system
   A warm, editorial, confident language-tutor brand.
   ========================================================================== */

:root {
  --ink: #1a1a2e;
  --ink-soft: #5b5b72;
  --ink-faint: #9494a8;
  --paper: #fbf7f0;
  --paper-alt: #f3ecdf;
  --paper-line: #e7ddc9;
  --white: #ffffff;
  --coral: #ff5a3c;
  --coral-dark: #e2431f;
  --coral-tint: #ffe4dc;
  --amber: #e8a33d;
  --amber-tint: #fbe8c9;
  --teal: #2f6f62;
  --teal-tint: #dcece7;
  --radius-sm: 0.6rem;
  --radius: 1.1rem;
  --radius-lg: 1.75rem;
  --shadow-sm: 0 2px 10px rgba(26, 26, 46, 0.07);
  --shadow-md: 0 14px 34px rgba(26, 26, 46, 0.10);
  --shadow-lg: 0 30px 70px rgba(26, 26, 46, 0.18);
  --serif: "DM Serif Display", Georgia, serif;
  --sans: "Schibsted Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.atelier {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}

.atelier h1, .atelier h2, .atelier h3, .atelier .font-serif {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.atelier .text-ink-soft { color: var(--ink-soft); }
.atelier .text-coral { color: var(--coral); }
.atelier .text-teal { color: var(--teal); }
.atelier .bg-paper-alt { background: var(--paper-alt); }
.atelier .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--coral-dark);
}
.atelier .eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--coral);
  display: inline-block;
}

/* ---------- nav ---------- */
.atelier-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.5rem 0;
  background: transparent;
  transition: background .35s ease, padding .35s ease, box-shadow .35s ease, border-color .35s ease;
  border-bottom: 1px solid transparent;
}
.atelier-nav .nav-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.atelier-nav.is-scrolled, .atelier-nav.is-solid {
  background: rgba(251, 247, 240, 0.92);
  backdrop-filter: blur(10px);
  padding: 0.85rem 0;
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid var(--paper-line);
}
.atelier-brand { display: flex; align-items: center; gap: 0; font-family: var(--serif); font-size: 1.4rem; color: var(--white); transition: color .35s ease; text-decoration: none; }
.atelier-nav.is-scrolled .atelier-brand, .atelier-nav.is-solid .atelier-brand { color: var(--ink); }
.atelier-brand .dot { color: var(--coral); }

.atelier-links { display: flex; align-items: center; gap: 2.1rem; list-style: none; margin: 0; padding: 0; }
.atelier-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255,255,255,0.88);
  text-decoration: none;
  position: relative;
  padding-bottom: 4px;
  transition: color .3s ease;
}
.atelier-nav.is-scrolled .atelier-links a, .atelier-nav.is-solid .atelier-links a { color: var(--ink-soft); }
.atelier-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--coral);
  transition: width .25s ease;
}
.atelier-links a:hover { color: var(--coral); }
.atelier-links a:hover::after { width: 100%; }
.atelier-links .dropdown-toggle::after { display: none; }
.atelier-links #menu-lang { top: 3.7px; }

.atelier-links .dropdown-menu {
  border: none;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  padding: 0.5rem;
  margin-top: 0.75rem;
}
.atelier-links .dropdown-item {
  border-radius: 0.5rem;
  padding: 0.55rem 0.9rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.atelier-links .dropdown-item:hover { background: var(--paper-alt); color: var(--coral-dark); }

.btn-atelier-nav-cta {
  background: var(--coral);
  color: #fff;
  border: none;
  padding: 0.6rem 1.3rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 8px 20px rgba(255, 90, 60, 0.28);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn-atelier-nav-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(255, 90, 60, 0.38); color:#fff; background: var(--coral-dark); }

.atelier-burger {
  display: none;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.5);
  background: transparent;
  color: #fff;
  align-items: center;
  justify-content: center;
}
.atelier-nav.is-scrolled .atelier-burger, .atelier-nav.is-solid .atelier-burger { color: var(--ink); border-color: var(--paper-line); }

#atelierMobileNav {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
#atelierMobileNav .nav-inner { padding-bottom: 1.75rem; }
body.nav-open { overflow: hidden; }

@media (max-width: 991px) {
  .atelier-links, .atelier-nav-actions .btn-atelier-nav-cta { display: none; }
  .atelier-burger { display: inline-flex; }
}

/* ---------- buttons ---------- */
.btn-atelier {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.9rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
  cursor: pointer;
}
.btn-atelier-primary { background: var(--coral); color: #fff; box-shadow: 0 10px 24px rgba(255, 90, 60, 0.3); }
.btn-atelier-primary:hover { background: var(--coral-dark); transform: translateY(-3px); box-shadow: 0 16px 30px rgba(255, 90, 60, 0.4); color: #fff; }
.btn-atelier-outline { background: transparent; border-color: rgba(255,255,255,0.55); color: #fff; }
.btn-atelier-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; color: #fff; transform: translateY(-3px); }
.btn-atelier-ink { background: var(--ink); color: #fff; }
.btn-atelier-ink:hover { background: #000; transform: translateY(-3px); color: #fff; }
.btn-atelier-ghost { background: var(--white); color: var(--ink); box-shadow: var(--shadow-sm); }
.btn-atelier-ghost:hover { background: var(--paper-line); color: var(--ink); transform: translateY(-2px); }

/* ---------- hero ---------- */
.atelier-hero {
  position: relative;
  background: radial-gradient(120% 140% at 15% -10%, #2b2b46 0%, var(--ink) 55%, #121223 100%);
  padding: 10.5rem 0 7rem;
  overflow: hidden;
}
.atelier-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.5;
  pointer-events: none;
}
.atelier-hero .hero-kicker {
  color: var(--amber);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.8rem;
}
.atelier-hero h1 {
  color: #fff;
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  line-height: 1.12;
  margin: 1rem 0 1.4rem;
}
.atelier-hero .rotator {
  color: var(--coral);
  display: inline-block;
  position: relative;
}
.atelier-hero p.lede {
  color: rgba(255,255,255,0.72);
  font-size: 1.12rem;
  max-width: 46ch;
  line-height: 1.65;
}
.atelier-hero .hero-photo-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 6px solid rgba(255,255,255,0.06);
}
.atelier-hero .hero-photo-wrap img { display: block; width: 100%; }
.atelier-hero .floating-card {
  position: absolute;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: floaty 4.5s ease-in-out infinite;
}
.atelier-hero .floating-card.fc-1 { top: -1.5rem; right: -1.8rem; }
.atelier-hero .floating-card.fc-2 { bottom: 1.5rem; left: -2rem; }
.atelier-hero .floating-card .fc-icon {
  width: 42px; height: 42px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.atelier-hero .floating-card .fc-icon.amber { background: var(--amber-tint); color: #a3691c; }
.atelier-hero .floating-card .fc-icon.teal { background: var(--teal-tint); color: var(--teal); }
.atelier-hero .floating-card strong { display: block; font-size: 0.95rem; color: var(--ink); }
.atelier-hero .floating-card span { font-size: 0.78rem; color: var(--ink-soft); }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- stats ---------- */
.atelier-stats { margin-top: -4.25rem; position: relative; z-index: 3; }
.atelier-stats .stats-bar {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.2rem 1rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.atelier-stats .stat { text-align: center; padding: 0 0.5rem; border-right: 1px solid var(--paper-line); }
.atelier-stats .stat:last-child { border-right: none; }
.atelier-stats .stat .num {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--coral-dark);
}
.atelier-stats .stat .label { color: var(--ink-soft); font-size: 0.88rem; margin-top: 0.2rem; }
@media (max-width: 767px) {
  .atelier-stats .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 1.5rem 0; }
  .atelier-stats .stat:nth-child(2) { border-right: none; }
  .atelier-stats .stat:nth-child(1), .atelier-stats .stat:nth-child(2) { border-bottom: 1px solid var(--paper-line); padding-bottom: 1.25rem; }
}

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible .reveal-child { opacity: 1; transform: translateY(0); }
.reveal-child { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.reveal-child:nth-child(1) { transition-delay: .05s; }
.reveal-child:nth-child(2) { transition-delay: .15s; }
.reveal-child:nth-child(3) { transition-delay: .25s; }
.reveal-child:nth-child(4) { transition-delay: .35s; }

/* ---------- section titles ---------- */
.atelier-section { padding: 6rem 0; }
.atelier-section-title { font-size: clamp(1.9rem, 3vw, 2.6rem); margin-bottom: 0.75rem; }
.atelier-section-lede { color: var(--ink-soft); font-size: 1.05rem; max-width: 60ch; }

/* ---------- level tabs (course finder) ---------- */
.level-tabs { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 2.2rem; }
.level-tab {
  border: 2px solid var(--paper-line);
  background: var(--white);
  color: var(--ink-soft);
  font-weight: 700;
  border-radius: 100px;
  padding: 0.65rem 1.5rem;
  cursor: pointer;
  transition: all .25s ease;
  font-family: var(--serif);
  font-size: 1.05rem;
}
.level-tab:hover { border-color: var(--coral); color: var(--coral-dark); }
.level-tab.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.level-panels { position: relative; }
.level-panel { display: none; }
.level-panel.is-active { display: block; animation: fadeIn .4s ease; }
@keyframes fadeIn { from { opacity:0; transform: translateY(10px);} to {opacity:1; transform:none;} }

.level-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
}
.level-card .level-media { position: relative; min-height: 280px; background-size: cover; background-position: center; }
.level-card .level-media .level-badge {
  position: absolute; top: 1.25rem; left: 1.25rem;
  background: rgba(26,26,46,0.85); color: #fff;
  font-family: var(--serif); font-size: 1.1rem;
  padding: 0.4rem 1rem; border-radius: 100px;
}
.level-card .level-body { padding: 2.4rem; }
.level-card .level-body h3 { font-size: 1.6rem; margin-bottom: 0.6rem; }
.level-card .level-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.2rem; }
.level-card .tag {
  font-size: 0.78rem; font-weight: 600;
  padding: 0.3rem 0.75rem; border-radius: 100px;
}
.tag.amber { background: var(--amber-tint); color: #a3691c; }
.tag.teal { background: var(--teal-tint); color: var(--teal); }
.tag.coral { background: var(--coral-tint); color: var(--coral-dark); }
@media (max-width: 900px) {
  .level-card { grid-template-columns: 1fr; }
  .level-card .level-media { min-height: 200px; }
}

/* ---------- course type cards ---------- */
.course-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease;
  text-decoration: none;
  color: var(--ink);
}
.course-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); color: var(--ink); }
.course-card .cc-media { height: 220px; background-size: cover; background-position: center 12%; position: relative; }
.course-card .cc-media::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(0,0,0,0) 55%, rgba(0,0,0,0.35) 100%); }
.course-card .cc-accent { height: 5px; }
.course-card .cc-body { padding: 1.6rem 1.5rem 1.8rem; flex: 1; display: flex; flex-direction: column; }
.course-card h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.course-card p { color: var(--ink-soft); font-size: 0.94rem; flex: 1; }
.course-card .cc-cta { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 700; color: var(--coral-dark); font-size: 0.9rem; margin-top: 0.75rem; text-decoration: none; }
.course-card .cc-cta .arrow { transition: transform .25s ease; }
.course-card:hover .cc-cta .arrow { transform: translateX(5px); }
.course-card .cc-cta-group { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 0.75rem; }
.course-card .cc-cta-group .cc-cta { margin-top: 0; }
.course-card .cc-cta-group .cc-cta:hover .arrow { transform: translateX(5px); }

/* ---------- quiz / level finder widget ---------- */
.quiz-widget {
  background: var(--ink);
  border-radius: var(--radius-lg);
  padding: 3rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.quiz-widget::before {
  content: "";
  position: absolute; right: -60px; top: -60px;
  width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,90,60,0.35), transparent 70%);
}
.quiz-chip {
  border: 2px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.04);
  color: #fff;
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  text-align: left;
  width: 100%;
  cursor: pointer;
  transition: all .22s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.quiz-chip:hover { border-color: var(--coral); background: rgba(255,90,60,0.1); }
.quiz-chip.is-selected { border-color: var(--coral); background: rgba(255,90,60,0.18); }
.quiz-result {
  margin-top: 1.75rem;
  padding: 1.5rem;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius);
  display: none;
}
.quiz-result.is-visible { display: block; animation: fadeIn .5s ease; }
.quiz-result .qr-level { font-family: var(--serif); font-size: 2rem; color: var(--coral); }

/* ---------- trust strip ---------- */
.trust-strip {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 2rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

/* ---------- footer ---------- */
.atelier-footer { background: var(--ink); color: rgba(255,255,255,0.7); padding: 4.5rem 0 1.75rem; }
.atelier-footer h5 { color: #fff; font-family: var(--sans); font-weight: 700; font-size: 0.95rem; margin-bottom: 1.1rem; }
.atelier-footer a { color: rgba(255,255,255,0.65); text-decoration: none; font-size: 0.92rem; }
.atelier-footer a:hover { color: var(--coral); }
.atelier-footer .footer-brand { font-family: var(--serif); font-size: 1.5rem; color: #fff; }
.atelier-footer input.form-control {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff;
}
.atelier-footer input.form-control::placeholder { color: rgba(255,255,255,0.45); }
.atelier-footer hr { border-color: rgba(255,255,255,0.12); }

/* ---------- floating trial CTA ---------- */
.floating-cta {
  position: fixed;
  right: 1.75rem;
  bottom: 1.75rem;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(140%);
  transition: transform .4s cubic-bezier(.2,.9,.3,1.1), opacity .3s ease, visibility 0s linear .3s;
}
.floating-cta.is-shown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition: transform .4s cubic-bezier(.2,.9,.3,1.1), opacity .3s ease, visibility 0s linear;
}

/* ---------- course detail page ---------- */
.course-detail-hero {
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 9.5rem 0 5rem;
}
.course-detail-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(26,26,46,0.55) 0%, rgba(26,26,46,0.82) 100%);
}
.course-detail-hero .container { position: relative; }
.level-meter { display: flex; gap: 0.4rem; margin: 1.5rem 0; }
.level-meter span {
  flex: 1; height: 8px; border-radius: 4px; background: rgba(255,255,255,0.25);
}
.level-meter span.is-active { background: var(--coral); }

.accordion-atelier .acc-item { border-bottom: 1px solid var(--paper-line); }
.accordion-atelier .acc-item:first-child { border-top: 1px solid var(--paper-line); }
.accordion-atelier .acc-head {
  width: 100%;
  background: none;
  border: none;
  padding: 1.35rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  cursor: pointer;
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--ink);
}
.accordion-atelier .acc-head .acc-plus { font-size: 1.4rem; color: var(--coral); transition: transform .3s ease; }
.accordion-atelier .acc-item.is-open .acc-plus { transform: rotate(45deg); }
.accordion-atelier .acc-panel { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.accordion-atelier .acc-panel-inner { padding-bottom: 1.5rem; }
.accordion-atelier .skill-row {
  display: flex; align-items: flex-start; gap: 0.75rem;
  padding: 0.55rem 0;
  color: var(--ink-soft);
}
.accordion-atelier .skill-row i { color: var(--teal); margin-top: 0.2rem; }

.sidebar-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}
.sidebar-card h4 { font-size: 1.2rem; margin-bottom: 1rem; }
.sidebar-sticky { position: sticky; top: 6.5rem; }

.form-control.atelier-input {
  border: 2px solid var(--paper-line);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
}
.form-control.atelier-input:focus { border-color: var(--coral); box-shadow: none; }

@media (max-width: 991px) {
  .atelier-section { padding: 4rem 0; }
  .atelier-hero { padding: 7.5rem 0 4rem; }
}