/* ═══════════════════════════════════════════════════
   ITO'26 — Landing Page Académique
   Style principal — Version 2 avec Formulaire de Soumission
   ═══════════════════════════════════════════════════ */

/* ─── Variables ─── */
:root {
  --navy:        #1a2744;
  --navy-mid:    #243154;
  --navy-light:  #2e3f6e;
  --gold:        #c9a227;
  --gold-light:  #e4b83a;
  --gold-pale:   #f5e9c0;
  --cream:       #faf8f3;
  --white:       #ffffff;
  --text:        #2d3748;
  --text-muted:  #6b7280;
  --border:      #e2ddd5;
  --success:     #2d7a3e;
  --success-bg:  #f0faf3;
  --error:       #c0392b;
  --error-bg:    #fdf3f2;
  --shadow:      0 4px 20px rgba(26,39,68,.10);
  --shadow-lg:   0 10px 40px rgba(26,39,68,.15);
  --radius:      6px;
  --radius-lg:   12px;
  --transition:  .25s ease;
  --max-w:       1200px;
  --header-h:    72px;
  --font-serif:  'EB Garamond', Georgia, serif;
  --font-sans:   'Source Sans 3', system-ui, sans-serif;
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; }

/* ─── Scroll indicator ─── */
.scroll-indicator {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  width: 0%;
  z-index: 9999;
  transition: width .1s linear;
}

/* ─── Container ─── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ─── Header ─── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(26,39,68,.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(201,162,39,.2);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,.25); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-family: var(--font-serif);
}
.brand-acronym {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: .02em;
}
.brand-year { color: var(--gold); }
.brand-sep { color: rgba(255,255,255,.3); font-size: 1.2rem; }
.brand-full { color: rgba(255,255,255,.7); font-size: .9rem; font-weight: 400; }
.header-nav {
  display: flex;
  align-items: center;
  gap: .25rem;
}
.header-nav a {
  color: rgba(255,255,255,.8);
  font-size: .875rem;
  font-weight: 500;
  padding: .45rem .85rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.header-nav a:hover { color: var(--white); background: rgba(255,255,255,.1); }
.btn-nav-submit {
  background: var(--gold) !important;
  color: var(--navy) !important;
  font-weight: 700 !important;
  margin-left: .5rem;
  padding: .5rem 1.1rem !important;
}
.btn-nav-submit:hover { background: var(--gold-light) !important; }
.nav-toggle {
  display: none;
  color: var(--white);
  font-size: 1.2rem;
  padding: .5rem;
}

/* ─── Buttons ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--gold);
  color: var(--navy);
  font-weight: 700;
  font-size: .95rem;
  padding: .85rem 1.8rem;
  border-radius: var(--radius);
  border: 2px solid var(--gold);
  transition: all var(--transition);
  cursor: pointer;
  font-family: var(--font-sans);
}
.btn-primary:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201,162,39,.35);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: transparent;
  color: var(--white);
  font-weight: 600;
  font-size: .95rem;
  padding: .85rem 1.8rem;
  border-radius: var(--radius);
  border: 2px solid rgba(255,255,255,.4);
  transition: all var(--transition);
}
.btn-secondary:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.7);
  transform: translateY(-2px);
}
.btn-sm { padding: .6rem 1.25rem; font-size: .875rem; }

/* ─── Hero ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #0e1829 0%, var(--navy) 45%, #1e3060 100%);
  padding: calc(var(--header-h) + 4rem) 0 4rem;
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 60% 40%, rgba(201,162,39,.08) 0%, transparent 70%);
}
.hero-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 50px 50px;
}
.hero-inner { position: relative; z-index: 1; max-width: 900px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(201,162,39,.15);
  border: 1px solid rgba(201,162,39,.4);
  color: var(--gold-light);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .45rem 1rem;
  border-radius: 2rem;
  margin-bottom: 2rem;
}
.hero-title {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.title-acronym {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  letter-spacing: -.02em;
}
.apostrophe { color: var(--gold); }
.title-divider {
  display: block;
  width: 70px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), transparent);
}
.title-full {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  font-weight: 500;
  color: rgba(255,255,255,.9);
  line-height: 1.3;
}
.hero-theme {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  border-left: 3px solid var(--gold);
  padding-left: 1.2rem;
  margin-bottom: 2rem;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 2.5rem;
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .875rem;
  color: rgba(255,255,255,.75);
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  padding: .4rem .85rem;
  border-radius: 2rem;
}
.meta-free { color: #6ee7a0 !important; border-color: rgba(110,231,160,.3) !important; background: rgba(110,231,160,.08) !important; }
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

/* Countdown */
.countdown-block {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(201,162,39,.25);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  display: inline-block;
}
.countdown-label {
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
  margin-bottom: .85rem;
  font-weight: 600;
}
.countdown-grid {
  display: flex;
  align-items: center;
  gap: .5rem;
}
.cd-unit {
  text-align: center;
  min-width: 64px;
  background: rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: .6rem .5rem .4rem;
}
.cd-unit span {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1;
}
.cd-unit em {
  display: block;
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  font-style: normal;
  margin-top: .3rem;
}
.cd-sep { color: var(--gold); font-size: 1.5rem; font-weight: 700; }
.countdown-deadline {
  font-size: .8rem;
  color: rgba(255,255,255,.45);
  margin-top: .85rem;
  text-align: center;
}

/* ─── Section base ─── */
.section { padding: 6rem 0; }
.section.axes    { background: var(--cream); }
.section.calendrier { background: var(--navy); color: var(--white); }
.section.form-section { background: #f4f1eb; }
.section.contact { background: var(--cream); }

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-label {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: .65rem;
  padding: .3rem .9rem;
  border-radius: 2rem;
  background: rgba(201,162,39,.1);
  border: 1px solid rgba(201,162,39,.25);
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 1rem;
  line-height: 1.25;
}
.calendrier .section-title { color: var(--white); }
.section-rule {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  margin: 0 auto .9rem;
  border-radius: 2px;
}
.section-sub { color: var(--text-muted); font-size: 1.05rem; max-width: 640px; margin: 0 auto; }
.form-section .section-sub { color: #555; }

/* ─── About ─── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-text p { margin-bottom: 1.1rem; font-size: 1.05rem; color: #444; }
.about-text strong { color: var(--navy); }
.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.about-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  text-align: center;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}
.about-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--gold-pale); }
.about-card i { font-size: 1.6rem; color: var(--gold); margin-bottom: .65rem; }
.about-card h4 { font-family: var(--font-serif); font-size: 1rem; font-weight: 600; color: var(--navy); margin-bottom: .3rem; }
.about-card p { font-size: .875rem; color: var(--text-muted); }

/* ─── Axes ─── */
.axes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.axe-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  transition: all var(--transition);
  box-shadow: var(--shadow);
  border-top: 3px solid transparent;
}
.axe-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-top-color: var(--gold);
}
.axe-num {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gold-pale);
  line-height: 1;
  margin-bottom: .75rem;
}
.axe-card:hover .axe-num { color: rgba(201,162,39,.3); }
.axe-card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: .85rem;
  line-height: 1.4;
}
.axe-card ul { padding-left: 0; }
.axe-card ul li {
  font-size: .87rem;
  color: var(--text-muted);
  padding: .3rem 0;
  padding-left: 1.2em;
  position: relative;
}
.axe-card ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-size: .75rem;
}

/* ─── Modalités ─── */
.modalites-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
.modalites-col h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: .6rem;
}
.modalites-col h3 i { color: var(--gold); }
.modalites-col p { color: #555; margin-bottom: 1rem; font-size: .95rem; }
.structure-list { counter-reset: steps; }
.structure-list li {
  counter-increment: steps;
  padding: .65rem .75rem .65rem 2.5rem;
  position: relative;
  font-size: .93rem;
  border-bottom: 1px solid var(--border);
  color: #444;
}
.structure-list li:last-child { border-bottom: none; }
.structure-list li::before {
  content: counter(steps);
  position: absolute;
  left: .5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.5rem;
  height: 1.5rem;
  background: var(--gold);
  color: var(--navy);
  border-radius: 50%;
  font-size: .72rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.req-items { margin-bottom: 1.5rem; }
.req-item {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .92rem;
  color: #444;
  padding: .55rem 0;
  border-bottom: 1px solid var(--border);
}
.req-item:last-child { border-bottom: none; }
.req-item i { color: var(--success); margin-top: .15rem; flex-shrink: 0; }
.lang-box {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(201,162,39,.08);
  border: 1px solid rgba(201,162,39,.3);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}
.lang-box i { font-size: 1.5rem; color: var(--gold); flex-shrink: 0; }
.lang-box strong { display: block; color: var(--navy); font-size: .9rem; }
.lang-box p { font-size: .88rem; color: var(--text-muted); margin: 0; }

/* ─── Calendrier / Timeline ─── */
.timeline {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 2.5rem;
  top: 0; bottom: 0;
  width: 2px;
  background: rgba(255,255,255,.15);
}
.tl-item {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  align-items: flex-start;
  position: relative;
}
.tl-dot {
  position: relative;
  z-index: 1;
  min-width: 3rem;
  height: 3rem;
  background: rgba(255,255,255,.1);
  border: 2px solid rgba(255,255,255,.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.6);
  font-size: .9rem;
  flex-shrink: 0;
  margin-left: 1rem;
  transition: all var(--transition);
}
.tl-active .tl-dot, .tl-conference .tl-dot {
  background: var(--gold);
  border-color: var(--gold-light);
  color: var(--navy);
  box-shadow: 0 0 0 5px rgba(201,162,39,.2);
}
.tl-content {
  padding: 1.5rem 1.75rem;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  flex: 1;
  transition: all var(--transition);
}
.tl-active .tl-content, .tl-conference .tl-content {
  border-color: rgba(201,162,39,.35);
  background: rgba(201,162,39,.07);
}
.tl-badge {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-weight: 700;
  background: var(--gold);
  color: var(--navy);
  padding: .2rem .65rem;
  border-radius: 2rem;
  margin-bottom: .5rem;
}
.tl-badge-conf { background: #4fc3f7; color: #0c2340; }
.tl-content h4 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: .4rem;
}
.tl-date { font-size: .88rem; color: var(--gold-light); margin-bottom: .4rem; }
.tl-date i { margin-right: .3rem; }
.tl-content p { font-size: .9rem; color: rgba(255,255,255,.65); }

/* ═══════════════════════════════════════════════════
   FORMULAIRE DE SOUMISSION
   ═══════════════════════════════════════════════════ */
.form-section .section-title { color: var(--navy); }
.req-star { color: var(--error); font-weight: 700; }

.submission-form {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Fieldsets */
.form-fieldset {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
  box-shadow: var(--shadow);
  position: relative;
}
.form-fieldset legend {
  display: flex;
  align-items: center;
  gap: .65rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--navy);
  padding: 0 .5rem;
  background: var(--white);
  margin-bottom: .25rem;
}
.fieldset-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.9rem;
  height: 1.9rem;
  background: var(--gold);
  color: var(--navy);
  border-radius: 50%;
  font-size: .82rem;
  font-weight: 800;
  font-family: var(--font-sans);
  flex-shrink: 0;
}
.legend-opt {
  font-size: .85rem;
  font-weight: 400;
  color: var(--text-muted);
  font-family: var(--font-sans);
}

/* Form grid */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1.25rem;
}
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group.full-width { margin-top: 1.25rem; }

/* Labels */
.form-group label {
  font-size: .875rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: .01em;
}

/* Inputs / Textareas */
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: .7rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: .95rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--navy-light);
  box-shadow: 0 0 0 3px rgba(46,63,110,.1);
}
.form-group input.error,
.form-group textarea.error,
.form-group select.error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(192,57,43,.08);
}
.form-group textarea { resize: vertical; min-height: 120px; line-height: 1.6; }

/* Select wrapper */
.select-wrapper { position: relative; }
.select-wrapper select {
  -webkit-appearance: none;
  appearance: none;
  padding-right: 2.5rem;
  cursor: pointer;
}
.select-arrow {
  position: absolute;
  right: .9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: .8rem;
}

/* Char count */
.char-count {
  font-size: .78rem;
  color: var(--text-muted);
  text-align: right;
  margin-top: .3rem;
}

/* Field hint */
.field-hint {
  font-size: .78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: .3rem;
}
.field-hint i { color: var(--gold); }

/* Error messages */
.form-error {
  font-size: .8rem;
  color: var(--error);
  min-height: 1em;
  display: block;
}

/* Info boxes */
.form-info-box {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: rgba(201,162,39,.07);
  border: 1px solid rgba(201,162,39,.3);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  font-size: .9rem;
  color: #444;
  line-height: 1.6;
}
.form-info-box > i { color: var(--gold); font-size: 1.1rem; flex-shrink: 0; margin-top: .1rem; }
.form-info-box strong { color: var(--navy); display: block; margin-bottom: .3rem; }
.form-info-apa {
  background: rgba(26,39,68,.04);
  border-color: rgba(26,39,68,.2);
}
.form-info-apa > i { color: var(--navy-light); }

/* Checkboxes */
.form-fieldset-decl { border-color: rgba(26,39,68,.15); }
.checkbox-group { margin-top: 1rem; }
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  cursor: pointer;
  font-size: .92rem;
  color: #444;
  line-height: 1.5;
}
.checkbox-label input[type="checkbox"] { display: none; }
.checkbox-custom {
  width: 1.2rem;
  height: 1.2rem;
  border: 2px solid var(--border);
  border-radius: 3px;
  background: var(--white);
  flex-shrink: 0;
  margin-top: .15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  position: relative;
}
.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
  background: var(--navy);
  border-color: var(--navy);
}
.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
  content: '';
  position: absolute;
  width: .35rem;
  height: .6rem;
  border: 2px solid var(--white);
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
}
.checkbox-custom.error { border-color: var(--error); }

/* Form actions */
.form-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: .5rem;
}
.btn-reset {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: transparent;
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 500;
  padding: .75rem 1.4rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.btn-reset:hover { border-color: var(--navy); color: var(--navy); }
.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--navy);
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  padding: .9rem 2.2rem;
  border-radius: var(--radius);
  border: 2px solid var(--navy);
  transition: all var(--transition);
  position: relative;
}
.btn-submit:hover {
  background: var(--navy-light);
  border-color: var(--navy-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26,39,68,.25);
}
.btn-submit:active { transform: translateY(0); }

/* Success message */
.submission-success {
  max-width: 620px;
  margin: 2rem auto 0;
  background: var(--white);
  border: 1px solid #a8d5b5;
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.success-icon {
  font-size: 3rem;
  color: var(--success);
  margin-bottom: 1rem;
}
.submission-success h3 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 1rem;
}
.submission-success p { color: #555; margin-bottom: .6rem; font-size: .97rem; }
.success-ref { font-family: monospace; font-size: .85rem; color: var(--text-muted); }

/* ─── Contact ─── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.contact-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-main { border-top: 3px solid var(--gold); }
.cc-icon {
  width: 3rem; height: 3rem;
  background: rgba(26,39,68,.07);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--navy);
  margin: 0 auto .85rem;
}
.contact-card h4 {
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: .5rem;
}
.cc-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: .5rem;
}
.cc-orga { font-size: .85rem; color: var(--text-muted); margin-bottom: .5rem; }
.cc-link {
  display: block;
  font-size: .88rem;
  color: var(--navy-light);
  margin-top: .4rem;
  transition: color var(--transition);
}
.cc-link:hover { color: var(--gold); }
.cc-link i { margin-right: .3rem; font-size: .8rem; }
.contact-note {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  background: rgba(201,162,39,.07);
  border: 1px solid rgba(201,162,39,.25);
  border-radius: var(--radius);
  padding: 1.1rem 1.5rem;
  font-size: .93rem;
  color: #555;
  max-width: 700px;
  margin: 0 auto;
}
.contact-note i { color: var(--gold); margin-top: .15rem; flex-shrink: 0; }

/* ─── Footer ─── */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,.75);
  padding: 3rem 0 0;
}
.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .brand-acronym { font-size: 1.75rem; font-family: var(--font-serif); }
.footer-brand p { font-size: .85rem; color: rgba(255,255,255,.5); margin-top: .5rem; max-width: 280px; }
.footer-info p {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .88rem;
  margin-bottom: .4rem;
}
.footer-info i { color: var(--gold); width: 1rem; }
.footer-bottom {
  text-align: center;
  padding: 1.2rem 0;
  font-size: .82rem;
  color: rgba(255,255,255,.35);
}

/* ─── Back to top ─── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 2.75rem;
  height: 2.75rem;
  background: var(--gold);
  color: var(--navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
  opacity: 0;
  transform: translateY(1rem);
  transition: all var(--transition);
  z-index: 500;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--gold-light); transform: translateY(-2px); }

/* ─── Utilities ─── */
.hide-mobile { display: inline; }

/* ═══════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .axes-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { gap: 2.5rem; }
}

@media (max-width: 900px) {
  .header-nav { display: none; }
  .header-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(26,39,68,.98);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,.1);
    gap: .25rem;
    align-items: stretch;
  }
  .header-nav.open a { padding: .75rem 1.5rem; border-radius: 0; }
  .btn-nav-submit { margin-left: 0 !important; }
  .nav-toggle { display: flex; }
  .hero-inner { max-width: 100%; }
  .about-grid { grid-template-columns: 1fr; }
  .axes-grid { grid-template-columns: 1fr 1fr; }
  .modalites-grid { grid-template-columns: 1fr; gap: 2rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .form-fieldset { padding: 1.5rem 1.25rem; }
}

@media (max-width: 640px) {
  .section { padding: 4rem 0; }
  .axes-grid { grid-template-columns: 1fr; }
  .about-cards { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
  .countdown-grid { gap: .35rem; }
  .cd-unit { min-width: 52px; }
  .cd-unit span { font-size: 1.5rem; }
  .timeline::before { left: 1.6rem; }
  .tl-dot { min-width: 2.2rem; height: 2.2rem; margin-left: .5rem; font-size: .75rem; }
  .tl-item { gap: 1rem; }
  .footer-inner { flex-direction: column; }
  .form-actions { flex-direction: column-reverse; width: 100%; }
  .btn-submit, .btn-reset { width: 100%; justify-content: center; }
  .hide-mobile { display: none; }
}