/* ── Root variables ─────────────────────────────────────────────────────────── */
:root {
  --blue:       #002395;
  --blue-light: #1a3cbf;
  --blue-bg:    #EEF2FF;
  --red:        #ED2939;
  --white:      #FFFFFF;
  --surface:    #F4F5F7;
  --text:       #1A1A2E;
  --text-muted: #6B7280;
  --border:     #E5E7EB;
  --green:      #16A34A;
  --green-bg:   #DCFCE7;
  --red-bg:     #FEE2E2;
  --shadow:     0 1px 3px rgba(0,0,0,.08);
  --radius:     8px;
  --sidebar-w:  220px;
  --header-h:   60px;
}

/* ── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--surface);
  min-height: 100vh;
}
a { color: var(--blue); text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
ul { list-style: none; }

/* ── Focus ring ─────────────────────────────────────────────────────────────── */
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* ── Header ─────────────────────────────────────────────────────────────────── */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: var(--blue);
  border-bottom: 3px solid var(--red);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.25rem;
  gap: 1rem;
}
.header__logo {
  display: flex; align-items: center; gap: .5rem;
  color: var(--white); font-size: 1.1rem; font-weight: 700;
  white-space: nowrap;
}
.header__logo-flag { font-size: 1.4rem; }
.header__right { display: flex; align-items: center; gap: .75rem; }

/* language switcher */
.lang-switcher { display: flex; gap: .3rem; }
.lang-btn {
  padding: .28rem .65rem;
  border-radius: 20px;
  font-size: .8rem; font-weight: 600;
  border: 1.5px solid rgba(255,255,255,.55);
  background: transparent;
  color: rgba(255,255,255,.85);
  transition: background .15s, color .15s, border-color .15s;
}
.lang-btn:hover  { background: rgba(255,255,255,.15); border-color: white; color: white; }
.lang-btn.active { background: white; color: var(--blue); border-color: white; }

/* hamburger (mobile) */
.hamburger {
  display: none;
  background: none; border: none; color: white;
  font-size: 1.5rem; line-height: 1; padding: .2rem;
}

/* ── Layout ─────────────────────────────────────────────────────────────────── */
.layout {
  display: flex;
  padding-top: var(--header-h);
  min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--white);
  border-right: 1px solid var(--border);
  position: fixed; top: var(--header-h); left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 90;
  display: flex; flex-direction: column;
}
.sidebar__nav {
  flex: 1;
  padding: 1.25rem .75rem;
  display: flex; flex-direction: column; gap: .25rem;
}
.sidebar__nav-label {
  font-size: .68rem; font-weight: 700; letter-spacing: .08em;
  color: var(--text-muted); text-transform: uppercase;
  padding: 0 .5rem .5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: .5rem;
}
.nav-item {
  display: flex; align-items: center; gap: .75rem;
  padding: .65rem .85rem;
  font-size: .9rem; font-weight: 500;
  color: var(--text-muted);
  border-radius: 8px;
  border: none; background: transparent; width: 100%; text-align: left;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.nav-item:hover { background: var(--surface); color: var(--text); }
.nav-item.active {
  background: var(--blue-bg);
  color: var(--blue);
  font-weight: 600;
}
.nav-item__icon-wrap {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--surface);
  font-size: 1rem; flex-shrink: 0;
  transition: background .15s;
}
.nav-item.active .nav-item__icon-wrap { background: var(--blue); }
.nav-item__icon { font-size: 1rem; }
.nav-item__label { font-size: .9rem; }

/* ── Main content ───────────────────────────────────────────────────────────── */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 2rem 1.5rem;
  max-width: 900px;
}

/* ── Views ──────────────────────────────────────────────────────────────────── */
.view { display: none; }
.view.active { display: block; }

/* ── Page titles ─────────────────────────────────────────────────────────────── */
.page-title { font-size: 1.6rem; font-weight: 700; color: var(--text); margin-bottom: .3rem; }
.page-subtitle { color: var(--text-muted); margin-bottom: 1.5rem; font-size: .95rem; }

/* ── Cards ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: border-color .2s, box-shadow .2s;
}
.card:hover { border-color: var(--blue); box-shadow: 0 2px 8px rgba(0,35,149,.1); }

/* ── Home dashboard ─────────────────────────────────────────────────────────── */
.home-hero {
  border-radius: var(--radius);
  padding: 3rem 2rem 2.25rem;
  color: white;
  margin-bottom: 1.25rem;
  position: relative;
  overflow: hidden;
  background-image: url('../Image_France_1.jpg');
  background-size: cover;
  background-position: center 55%;
  background-color: var(--blue); /* fallback if image fails */
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  box-shadow: 0 4px 20px rgba(0,35,149,.2);
}
/* gradient overlay: blue-left fades into a darker veil right */
.home-hero::before {
  content: '';
  position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(
    120deg,
    rgba(0,35,149,.82) 0%,
    rgba(0,20,90,.60) 45%,
    rgba(0,10,50,.45) 100%
  );
}
/* thin tricolour stripe across the bottom */
.home-hero::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 4px; z-index: 1;
  background: linear-gradient(to right,
    var(--blue) 33.3%, white 33.3%, white 66.6%, var(--red) 66.6%);
}
.home-hero > * { position: relative; z-index: 2; }

.home-hero__welcome {
  font-size: .85rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  opacity: .75; margin-bottom: .4rem;
  text-shadow: 0 1px 4px rgba(0,0,0,.5);
}
.home-hero__title {
  font-size: 2rem; font-weight: 800;
  line-height: 1.15; margin-bottom: .6rem;
  text-shadow: 0 2px 8px rgba(0,0,0,.55);
  letter-spacing: -.01em;
}
.home-hero__sub {
  font-size: .95rem; opacity: .88; max-width: 480px;
  line-height: 1.55;
  text-shadow: 0 1px 4px rgba(0,0,0,.45);
}
.home-hero__credit {
  font-size: .7rem; opacity: .45; margin-top: .6rem;
  letter-spacing: .04em;
}

.home-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.5rem; }
.home-card { text-decoration: none; color: inherit; }
.home-card .card { height: 100%; display: flex; flex-direction: column; }
.home-card__icon { font-size: 2rem; margin-bottom: .75rem; }
.home-card__title { font-size: 1.1rem; font-weight: 700; margin-bottom: .4rem; color: var(--text); }
.home-card__desc  { font-size: .9rem; color: var(--text-muted); flex: 1; margin-bottom: 1rem; }
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .55rem 1.1rem;
  border-radius: 6px;
  font-size: .9rem; font-weight: 600;
  border: none;
  transition: opacity .15s, transform .1s;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary  { background: var(--blue); color: white; }
.btn--red      { background: var(--red);  color: white; }
.btn--outline  { background: transparent; color: var(--blue); border: 1.5px solid var(--blue); }
.btn--sm { padding: .4rem .85rem; font-size: .85rem; }
.btn--lg { padding: .75rem 1.5rem; font-size: 1rem; }

.tip-box {
  background: var(--blue-bg);
  border: 1px solid rgba(0,35,149,.2);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  display: flex; gap: .75rem; align-items: flex-start;
}
.tip-box__icon  { font-size: 1.2rem; flex-shrink: 0; }
.tip-box__title { font-weight: 700; font-size: .9rem; color: var(--blue); margin-bottom: .2rem; }
.tip-box__text  { font-size: .88rem; color: var(--text-muted); }

/* ── Accordion (study) ──────────────────────────────────────────────────────── */
.accordion { display: flex; flex-direction: column; gap: .75rem; }
.accordion-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.accordion-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.25rem;
  cursor: pointer;
  gap: 1rem;
  transition: background .15s;
}
.accordion-header:hover { background: var(--surface); }
.accordion-header__left { display: flex; align-items: center; gap: .75rem; }
.accordion-header__icon { font-size: 1.4rem; }
.accordion-header__title { font-size: 1rem; font-weight: 700; color: var(--text); }
.accordion-header__badge {
  font-size: .72rem; font-weight: 600;
  background: var(--blue-bg); color: var(--blue);
  padding: .15rem .5rem; border-radius: 20px;
  white-space: nowrap;
}
.accordion-chevron { color: var(--text-muted); font-size: 1.1rem; transition: transform .25s; flex-shrink: 0; }
.accordion-item.open .accordion-chevron { transform: rotate(180deg); }
.accordion-item.open .accordion-header { background: var(--blue-bg); border-bottom: 1px solid rgba(0,35,149,.15); }

.accordion-body { display: none; padding: 0; }
.accordion-item.open .accordion-body { display: block; }
.accordion-section { padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); }
.accordion-section:last-child { border-bottom: none; }
.accordion-section h4 {
  font-size: .9rem; font-weight: 700;
  color: var(--blue); margin-bottom: .6rem;
  display: flex; align-items: center; gap: .4rem;
}
.accordion-section h4::before { content: '▸'; color: var(--red); }
.accordion-section ul { display: flex; flex-direction: column; gap: .4rem; padding-left: .5rem; }
.accordion-section li {
  font-size: .9rem; line-height: 1.55;
  color: var(--text);
  padding: .3rem .6rem;
  border-left: 2px solid var(--border);
  background: var(--surface);
  border-radius: 0 4px 4px 0;
}
.accordion-section li strong { color: var(--text); }
.accordion-section li em { color: var(--blue); font-style: normal; font-weight: 600; }
.accordion-source {
  padding: .65rem 1.25rem;
  font-size: .75rem; color: var(--text-muted);
  background: var(--surface);
  border-top: 1px solid var(--border);
}

/* ── Exam setup ─────────────────────────────────────────────────────────────── */
.exam-setup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.5rem; }
.level-card {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  background: var(--white);
}
.level-card:hover  { border-color: var(--blue); background: var(--blue-bg); }
.level-card.selected { border-color: var(--blue); background: var(--blue-bg); }
.level-card.selected .level-card__badge { background: var(--blue); color: white; }
.level-card__badge {
  display: inline-block;
  font-size: .75rem; font-weight: 700;
  background: var(--surface); color: var(--blue);
  border: 1px solid var(--blue);
  padding: .15rem .55rem; border-radius: 20px;
  margin-bottom: .6rem;
}
.level-card__title { font-size: 1rem; font-weight: 700; margin-bottom: .4rem; }
.level-card__desc  { font-size: .875rem; color: var(--text-muted); }
.exam-info-bar {
  text-align: center; font-size: .85rem; color: var(--text-muted);
  margin-bottom: 1.25rem;
}

/* ── Exam ───────────────────────────────────────────────────────────────────── */
.exam-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.25rem; flex-wrap: wrap; gap: .5rem;
}
.exam-progress-wrap { display: flex; align-items: center; gap: .75rem; }
.exam-page-label { font-size: .9rem; font-weight: 600; color: var(--blue); }
.exam-answered { font-size: .82rem; color: var(--text-muted); }
.progress-bar-track {
  width: 140px; height: 6px;
  background: var(--border); border-radius: 99px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; background: var(--blue); border-radius: 99px;
  transition: width .3s;
}

/* timer */
.exam-timer {
  display: flex; align-items: center; gap: .45rem;
  padding: .35rem .85rem;
  border-radius: 20px;
  font-size: .9rem; font-weight: 700;
  background: var(--blue-bg);
  color: var(--blue);
  border: 1.5px solid rgba(0,35,149,.2);
  transition: background .4s, color .4s, border-color .4s;
  font-variant-numeric: tabular-nums;
  letter-spacing: .03em;
}
.exam-timer__icon { font-size: 1rem; }
.exam-timer.warn {
  background: #FFF7ED; color: #C2410C;
  border-color: rgba(194,65,12,.3);
}
.exam-timer.danger {
  background: var(--red-bg); color: var(--red);
  border-color: rgba(237,41,57,.35);
  animation: pulse-timer 1s ease-in-out infinite;
}
@keyframes pulse-timer {
  0%,100% { opacity: 1; }
  50%      { opacity: .6; }
}

/* question dots */
.question-dots {
  display: flex; flex-wrap: wrap; gap: .35rem;
  margin-bottom: 1.25rem;
}
.q-dot {
  width: 26px; height: 26px; border-radius: 50%;
  font-size: .72rem; font-weight: 700;
  border: 2px solid var(--border);
  background: var(--white); color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all .15s;
}
.q-dot.answered  { border-color: var(--blue); background: var(--blue-bg); color: var(--blue); }
.q-dot.current   { border-color: var(--blue); background: var(--blue); color: white; }

/* question card */
.question-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.question-topic-badge {
  display: inline-flex; align-items: center;
  font-size: .75rem; font-weight: 600;
  background: var(--blue-bg); color: var(--blue);
  padding: .2rem .6rem; border-radius: 20px;
  margin-bottom: .75rem;
}
.question-number { font-size: .8rem; color: var(--text-muted); margin-bottom: .4rem; }
.question-text {
  font-size: 1.05rem; font-weight: 600;
  line-height: 1.5; color: var(--text);
  margin-bottom: 1.1rem;
}
.options-list { display: flex; flex-direction: column; gap: .5rem; }
.option-item {
  display: flex; align-items: center; gap: .75rem;
  padding: .75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  background: var(--white);
  transition: border-color .15s, background .15s;
}
.option-item:hover { border-color: var(--blue); background: var(--blue-bg); }
.option-item.selected {
  border-color: var(--blue); background: var(--blue-bg);
}
.option-item.selected .option-radio { background: var(--blue); border-color: var(--blue); }
.option-radio {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  transition: background .15s, border-color .15s;
  position: relative;
}
.option-item.selected .option-radio::after {
  content: '';
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 7px; height: 7px;
  background: white; border-radius: 50%;
}
.option-letter {
  font-size: .8rem; font-weight: 700;
  color: var(--text-muted); min-width: 1.2rem;
}
.option-text { font-size: .93rem; line-height: 1.45; color: var(--text); flex: 1; }

/* exam nav */
.exam-nav {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: .5rem;
}

/* ── Results ─────────────────────────────────────────────────────────────────── */
.results-header {
  display: flex; gap: 1.5rem; align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.score-circle {
  width: 110px; height: 110px; border-radius: 50%;
  border: 6px solid var(--blue);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  flex-shrink: 0;
  background: var(--white);
}
.score-circle.passed { border-color: var(--green); }
.score-circle.failed { border-color: var(--red); }
.score-circle__num   { font-size: 1.8rem; font-weight: 800; color: var(--text); line-height: 1; }
.score-circle__denom { font-size: .8rem; color: var(--text-muted); }
.results-info__badge {
  display: inline-block;
  font-size: .8rem; font-weight: 700;
  padding: .25rem .8rem; border-radius: 20px;
  margin-bottom: .4rem;
}
.results-info__badge.passed { background: var(--green-bg); color: var(--green); }
.results-info__badge.failed { background: var(--red-bg);   color: var(--red); }
.results-info__msg   { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: .25rem; }
.results-info__threshold { font-size: .82rem; color: var(--text-muted); }
.results-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-bottom: 1.5rem; }

.review-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 1rem; }
.review-list { display: flex; flex-direction: column; gap: .75rem; }
.review-item {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.review-item.correct   { border-left: 4px solid var(--green); }
.review-item.incorrect { border-left: 4px solid var(--red); }
.review-item__header {
  padding: .75rem 1rem;
  display: flex; align-items: flex-start; gap: .75rem;
}
.review-badge {
  font-size: .72rem; font-weight: 700;
  padding: .15rem .5rem; border-radius: 20px;
  white-space: nowrap; flex-shrink: 0; margin-top: .1rem;
}
.review-badge.correct   { background: var(--green-bg); color: var(--green); }
.review-badge.incorrect { background: var(--red-bg);   color: var(--red); }
.review-item__q { font-size: .9rem; font-weight: 600; line-height: 1.45; flex: 1; }
.review-item__body { padding: 0 1rem .85rem 1rem; display: flex; flex-direction: column; gap: .35rem; }
.review-answer { font-size: .85rem; }
.review-answer span { font-weight: 600; }
.review-answer.your-wrong { color: var(--red); }
.review-answer.correct-ans { color: var(--green); }
.review-explanation {
  font-size: .83rem; color: var(--text-muted);
  background: var(--surface);
  border-radius: 4px;
  padding: .5rem .7rem;
  border-left: 3px solid var(--blue);
  line-height: 1.5;
}

/* ── T&C ─────────────────────────────────────────────────────────────────────── */
.tc-lang-tabs { display: flex; gap: .5rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.tc-tab {
  padding: .4rem 1rem;
  border-radius: 6px;
  font-size: .875rem; font-weight: 600;
  border: 1.5px solid var(--border);
  background: var(--white); color: var(--text-muted);
  cursor: pointer; transition: all .15s;
}
.tc-tab:hover  { border-color: var(--blue); color: var(--blue); }
.tc-tab.active { background: var(--blue); border-color: var(--blue); color: white; }
.tc-content { display: none; }
.tc-content.active { display: block; }
.tc-body {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  font-size: .9rem; line-height: 1.7; color: var(--text);
}
.tc-body h2 { font-size: 1.15rem; font-weight: 700; margin: 1.25rem 0 .5rem; color: var(--blue); }
.tc-body h3 { font-size: 1rem; font-weight: 700; margin: 1rem 0 .4rem; }
.tc-body p  { margin-bottom: .75rem; }
.tc-body ul { padding-left: 1.25rem; margin-bottom: .75rem; }
.tc-body ul li { margin-bottom: .3rem; list-style: disc; }
.tc-body .tc-header-block {
  text-align: center; padding-bottom: 1.25rem;
  border-bottom: 2px solid var(--border); margin-bottom: 1.25rem;
}
.tc-body .tc-header-block h1 { font-size: 1.3rem; font-weight: 800; color: var(--text); margin-bottom: .2rem; }
.tc-body .tc-header-block .tc-meta { font-size: .8rem; color: var(--text-muted); }

/* ── Footer ─────────────────────────────────────────────────────────────────── */
.footer {
  margin-left: var(--sidebar-w);
  padding: 1rem 1.5rem;
  background: var(--white);
  border-top: 1px solid var(--border);
  font-size: .78rem; color: var(--text-muted);
  display: flex; flex-wrap: wrap; gap: .5rem; align-items: center;
  justify-content: space-between;
}
.footer a { color: var(--blue); }

/* ── Overlay (mobile sidebar) ───────────────────────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0; background: rgba(0,0,0,.45);
  z-index: 85;
}
.sidebar-overlay.active { display: block; }

/* ── Mobile nav bar ─────────────────────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--white); border-top: 1px solid var(--border);
  z-index: 95;
  padding: .25rem 0;
}
.mobile-nav__items { display: flex; }
.mobile-nav__item {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  padding: .5rem .25rem;
  font-size: .7rem; font-weight: 500; color: var(--text-muted);
  cursor: pointer; border: none; background: none;
  transition: color .15s;
}
.mobile-nav__item.active { color: var(--blue); }
.mobile-nav__item__icon { font-size: 1.25rem; margin-bottom: .15rem; }

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 767px) {
  .sidebar { transform: translateX(-100%); transition: transform .25s; }
  .sidebar.open { transform: translateX(0); }
  .hamburger { display: flex; }
  .main { margin-left: 0; padding: 1.25rem 1rem 5rem; }
  .footer { margin-left: 0; padding-bottom: 5rem; }
  .mobile-nav { display: block; }
  .home-cards { grid-template-columns: 1fr; }
  .exam-setup-grid { grid-template-columns: 1fr; }
  .home-hero__title { font-size: 1.4rem; }
  .home-hero::after { display: none; }
  .results-header { flex-direction: column; align-items: flex-start; }
  .progress-bar-track { width: 100px; }
  .question-dots { gap: .25rem; }
  .q-dot { width: 24px; height: 24px; font-size: .68rem; }
}

@media (min-width: 768px) and (max-width: 900px) {
  .main { max-width: 100%; }
}

/* ── Utility ─────────────────────────────────────────────────────────────────── */
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.text-center { text-align: center; }
.hidden { display: none !important; }