@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Syne:wght@700;800&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --brand-900: #020d1a;
  --brand-800: #041d35;
  --brand-700: #062f56;
  --brand-500: #0d6fc7;
  --brand-400: #11abf3;
  --brand-300: #5ccbf8;
  --brand-200: #a8e4fd;
  --brand-100: #d4f1fe;
  --brand-50:  #eaf8ff;
  --cyan-light: #d9f0f5;
  --cyan-pale:  #eafafa;
  --white: #ffffff;
  --gray-50: #f7f9fc;
  --gray-100: #eef2f7;
  --gray-200: #dde4ee;
  --gray-400: #9aaabe;
  --gray-600: #556070;
  --gray-800: #1e2a38;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 2px 20px rgba(2,13,26,0.08), 0 0 1px rgba(2,13,26,0.12);
  --shadow-glow: 0 0 0 3px rgba(17,171,243,0.18);
  --transition: 0.22s cubic-bezier(0.4,0,0.2,1);
  --transition-spring: 0.35s cubic-bezier(0.34,1.56,0.64,1);
}

html { height: 100%; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--brand-900);
  color: var(--gray-800);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── SHELL LAYOUT ──────────────────────────────────────────────── */

.shell {
  display: grid;
  grid-template-rows: auto 1fr;
  grid-template-columns: 280px 1fr;
  grid-template-areas:
    "header header"
    "nav    main";
  min-height: 100vh;
}

/* ─── HEADER ────────────────────────────────────────────────────── */

header {
  grid-area: header;
  background: var(--brand-900);
  border-bottom: 1px solid rgba(17,171,243,0.15);
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--brand-400), var(--brand-500));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.header-logo svg { width: 20px; height: 20px; fill: white; }

h1 {
  font-family: 'Syne', sans-serif;
  font-size: 1.35rem;
  font-weight: 800;
  color: white;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  transition: none;
}

h1 span {
  color: var(--brand-400);
}

.header-badge {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(17,171,243,0.15);
  color: var(--brand-300);
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid rgba(17,171,243,0.25);
}

/* ─── NAV ───────────────────────────────────────────────────────── */

nav {
  grid-area: nav;
  background: var(--brand-800);
  border-right: 1px solid rgba(17,171,243,0.1);
  padding: 2rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
  float: none;
  width: auto;
  height: auto;
}

nav::before {
  content: 'NAVIGATION';
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--gray-400);
  padding: 0 0.75rem;
  margin-bottom: 8px;
}

nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--gray-400);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

nav a::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(17,171,243,0.12), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

nav a:hover {
  color: white;
  background: rgba(255,255,255,0.05);
  transform: translateX(3px);
}

nav a:hover::before { opacity: 1; }

nav a.active {
  color: var(--brand-300);
  background: rgba(17,171,243,0.12);
  border: 1px solid rgba(17,171,243,0.2);
}

nav a.active::before { opacity: 1; }

.nav-icon {
  width: 18px;
  height: 18px;
  opacity: 0.7;
  flex-shrink: 0;
}

nav a:hover .nav-icon,
nav a.active .nav-icon { opacity: 1; }

/* ─── MAIN CONTENT ──────────────────────────────────────────────── */

section {
  grid-area: main;
  background: var(--gray-50);
  padding: 2rem;
  float: none;
  width: auto;
  height: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  overflow-y: auto;
}

iframe {
  width: 100%;
  height: calc(100vh - 64px - 4rem);
  border: none;
  border-radius: var(--radius-lg);
  background: white;
  box-shadow: var(--shadow-card);
}

/* ─── FORM BODY (enregistrement + evaluation) ───────────────────── */

body#b,
body.form-body {
  background: var(--gray-50) !important;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

form {
  width: 100%;
  max-width: 560px;
}

fieldset {
  border: none;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 2rem 2.25rem 2.25rem;
  position: relative;
  overflow: hidden;
}

fieldset::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-400), var(--brand-300), var(--brand-500));
}

legend {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand-700);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 1.75rem;
  padding: 0;
  float: none;
  width: 100%;
}

/* ─── FORM FIELDS ───────────────────────────────────────────────── */

fieldset > div {
  margin-bottom: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  display: block !important;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gray-600);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  width: auto !important;
}

input[type="text"],
input[type="email"],
input[type="number"],
select {
  display: block !important;
  width: 100%;
  height: 46px;
  padding: 0 14px;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--gray-800);
  background: var(--gray-50);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

input[type="text"]:hover,
select:hover {
  border-color: var(--gray-400);
  background: white;
}

input[type="text"]:focus,
select:focus {
  border-color: var(--brand-400);
  background: white;
  box-shadow: var(--shadow-glow);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239aaabe' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

/* Radio buttons */

.radio-group {
  display: flex;
  gap: 12px;
  flex-direction: row !important;
  flex-wrap: wrap;
}

.radio-option {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  flex: 1;
  min-width: 120px;
}

.radio-option:hover {
  border-color: var(--brand-300);
  background: var(--brand-50);
}

.radio-option input[type="radio"] {
  width: 18px !important;
  height: 18px !important;
  min-width: 18px;
  accent-color: var(--brand-400);
  cursor: pointer;
  display: inline-block !important;
  padding: 0 !important;
  border: none !important;
  background: none !important;
  box-shadow: none !important;
}

.radio-option span {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
}

/* Checkbox */

.checkbox-row {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--gray-200);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}

.checkbox-row:hover {
  border-color: var(--brand-300);
  background: var(--brand-50);
}

input[type="checkbox"] {
  width: 18px !important;
  height: 18px !important;
  min-width: 18px;
  accent-color: var(--brand-400);
  cursor: pointer;
  display: inline-block !important;
  padding: 0 !important;
  border: none !important;
  background: none !important;
  box-shadow: none !important;
}

.checkbox-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  text-transform: none;
  letter-spacing: 0;
}

/* Notes fields inline */

.notes-row {
  display: flex !important;
  flex-direction: row !important;
  gap: 10px;
  align-items: flex-end;
}

.note-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

/* ─── BUTTONS ───────────────────────────────────────────────────── */

.btn-row {
  display: flex !important;
  flex-direction: row !important;
  gap: 10px;
  margin-top: 0.5rem;
}

input[type="reset"],
input[type="submit"],
button {
  height: 46px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform var(--transition-spring), box-shadow var(--transition);
  letter-spacing: 0.02em;
}

input[type="submit"] {
  background: linear-gradient(135deg, var(--brand-500), var(--brand-400));
  color: white;
  flex: 1;
  box-shadow: 0 4px 14px rgba(17,171,243,0.35);
}

input[type="submit"]:hover {
  background: linear-gradient(135deg, var(--brand-400), var(--brand-300));
  box-shadow: 0 6px 20px rgba(17,171,243,0.45);
  transform: translateY(-1px);
}

input[type="submit"]:active {
  transform: scale(0.97) translateY(0);
  box-shadow: 0 2px 8px rgba(17,171,243,0.3);
}

input[type="reset"] {
  background: transparent;
  color: var(--gray-600);
  border: 1.5px solid var(--gray-200);
}

input[type="reset"]:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
  color: var(--gray-800);
}

input[type="reset"]:active {
  transform: scale(0.97);
}

/* ─── ANIMATIONS ────────────────────────────────────────────────── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  from { background-position: -200% center; }
  to   { background-position: 200% center; }
}

fieldset {
  animation: fadeUp 0.45s cubic-bezier(0.22,1,0.36,1) both;
}

fieldset > div {
  animation: fadeUp 0.4s cubic-bezier(0.22,1,0.36,1) both;
}

fieldset > div:nth-child(1) { animation-delay: 0.05s; }
fieldset > div:nth-child(2) { animation-delay: 0.10s; }
fieldset > div:nth-child(3) { animation-delay: 0.15s; }
fieldset > div:nth-child(4) { animation-delay: 0.20s; }
fieldset > div:nth-child(5) { animation-delay: 0.25s; }
fieldset > div:nth-child(6) { animation-delay: 0.30s; }

/* ─── RESPONSIVE ─────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "header"
      "nav"
      "main";
  }
  nav { flex-direction: row; overflow-x: auto; padding: 0.75rem 1rem; }
  nav::before { display: none; }
  nav a { flex-direction: column; gap: 4px; font-size: 0.75rem; padding: 8px 12px; min-width: 80px; text-align: center; transform: none !important; }
  section { padding: 1rem; }
}