/* ═══════════════════════════════════════════════════════════
   Charte graphique — Énergie d'Ici
   Polices : placez les fichiers woff/woff2 dans /public/fonts/
   ═══════════════════════════════════════════════════════════ */

/* ── Carnas ─────────────────────────────────────────────── */
@font-face {
  font-family: 'Carnas';
  src: url('/fonts/Carnas-Light.woff2') format('woff2'),
       url('/fonts/Carnas-Light.woff') format('woff');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Carnas';
  src: url('/fonts/Carnas-Regular.woff2') format('woff2'),
       url('/fonts/Carnas-Regular.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Carnas';
  src: url('/fonts/Carnas-Medium.woff2') format('woff2'),
       url('/fonts/Carnas-Medium.woff') format('woff');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Carnas';
  src: url('/fonts/Carnas-Bold.woff2') format('woff2'),
       url('/fonts/Carnas-Bold.woff') format('woff');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ── Tingler Print ──────────────────────────────────────── */
@font-face {
  font-family: 'Tingler Print';
  src: url('/fonts/TinglerPrint-Regular.woff2') format('woff2'),
       url('/fonts/TinglerPrint-Regular.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ── Variables ──────────────────────────────────────────── */
:root {
  /* Couleurs de marque */
  --c-vert:       #00ab97;
  --c-bleu:       #00b1eb;
  --c-bleu-alt:   #4dd9ff;
  --c-gris:       #9d9d9c;
  --c-blanc:      #ffffff;

  /* Encre & surfaces neutres */
  --ink:          #1c2b33;
  --ink-soft:     #51616b;
  --ink-muted:    #8a97a0;
  --surface:      #ffffff;
  --surface-2:    #f4f8fb;
  --line:         #e3eaf0;
  --line-strong:  #cfdae2;

  /* Dégradés */
  --grad-brand:      linear-gradient(120deg, #00b1eb 0%, #00ab97 100%);
  --grad-brand-soft: linear-gradient(120deg, rgba(0,177,235,.10) 0%, rgba(0,171,151,.10) 100%);
  --grad-blanc-bleu: linear-gradient(135deg, #ffffff 0%, #4dd9ff 100%);

  /* Typographies */
  --font-base:   'Carnas', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-accent: 'Tingler Print', 'Carnas', system-ui, sans-serif;

  /* Rayons */
  --radius-sm:  8px;
  --radius:     12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --radius-pill: 999px;

  /* Ombres en couches */
  --shadow-sm:  0 1px 2px rgba(16, 40, 54, .06), 0 1px 3px rgba(16, 40, 54, .05);
  --shadow:     0 4px 12px -2px rgba(16, 40, 54, .08), 0 2px 6px -2px rgba(16, 40, 54, .06);
  --shadow-md:  0 12px 28px -8px rgba(16, 40, 54, .14), 0 4px 10px -4px rgba(16, 40, 54, .08);
  --shadow-brand: 0 10px 30px -8px rgba(0, 177, 235, .45);

  /* Anneau de focus */
  --ring: 0 0 0 4px rgba(0, 177, 235, .18);

  /* Transitions */
  --t:        .2s cubic-bezier(.4, 0, .2, 1);
  --t-slow:   .35s cubic-bezier(.4, 0, .2, 1);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* ── Base ───────────────────────────────────────────────── */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  font-weight: 400;
  color: var(--ink);
  background-color: #eef3f7;
  background-image:
    radial-gradient(60rem 60rem at 110% -10%, rgba(0, 177, 235, .10), transparent 55%),
    radial-gradient(50rem 50rem at -10% 0%, rgba(0, 171, 151, .10), transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
}

::selection {
  background: rgba(0, 177, 235, .22);
  color: var(--ink);
}

/* ── Site header ────────────────────────────────────────── */
.site-header {
  background: rgba(255, 255, 255, .72);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__brand {
  position: relative;
  font-family: var(--font-accent);
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: .04em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
  white-space: nowrap;
  padding-left: 1.65rem;
}

/* Pin de marque devant le logo texte */
.site-header__brand::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
  background: var(--grad-brand);
  border-radius: 50% 50% 50% 2px;
  rotate: 45deg;
  box-shadow: 0 2px 8px rgba(0, 177, 235, .45);
}

.site-header__nav {
  display: flex;
  gap: .25rem;
}

.site-header__nav a {
  position: relative;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  padding: .45rem 1rem;
  border-radius: var(--radius-pill);
  transition: color var(--t), background var(--t);
  white-space: nowrap;
}

.site-header__nav a:hover {
  color: var(--c-bleu);
  background: var(--grad-brand-soft);
}

/* ── Main layout ────────────────────────────────────────── */
.site-main {
  flex: 1;
  padding: 2.5rem 1.5rem;
  max-width: 920px;
  width: 100%;
  margin: 0 auto;
  animation: rise var(--t-slow) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: .8rem;
  color: var(--ink-muted);
  border-top: 1px solid var(--line);
  margin-top: 3.5rem;
}

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--grad-brand);
  border-radius: var(--radius-xl);
  padding: 3rem 2.5rem;
  color: var(--c-blanc);
  margin-bottom: 2rem;
  box-shadow: var(--shadow-brand);
  isolation: isolate;
}

/* Halos décoratifs */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  z-index: -1;
}

.hero::before {
  width: 22rem;
  height: 22rem;
  top: -10rem;
  right: -6rem;
  background: radial-gradient(circle, rgba(255, 255, 255, .25), transparent 70%);
}

.hero::after {
  width: 16rem;
  height: 16rem;
  bottom: -9rem;
  left: -4rem;
  background: radial-gradient(circle, rgba(255, 255, 255, .15), transparent 70%);
}

.hero__title {
  font-family: var(--font-accent);
  font-size: 2.4rem;
  font-weight: 400;
  letter-spacing: .02em;
  line-height: 1.15;
  margin-bottom: .6rem;
}

.hero__subtitle {
  font-weight: 300;
  font-size: 1.05rem;
  opacity: .92;
  max-width: 44ch;
}

/* ── Action cards (home) ────────────────────────────────── */
.action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.action-card {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
  box-shadow: var(--shadow-sm);
}

/* Liseré dégradé qui se révèle au survol */
.action-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad-brand);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--t);
}

.action-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.action-card:hover::before { opacity: 1; }

.action-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  font-size: 1.5rem;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  background: var(--grad-brand-soft);
}

.action-card__title {
  font-weight: 500;
  color: var(--ink);
  font-size: 1.1rem;
  margin-bottom: .4rem;
}

.action-card:hover .action-card__title { color: var(--c-bleu); }

.action-card__desc {
  font-size: .875rem;
  color: var(--ink-muted);
  line-height: 1.55;
}

/* ── Card ───────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 2.25rem;
}

.card + .card {
  margin-top: 1.5rem;
}

/* ── Section title ──────────────────────────────────────── */
.section-title {
  font-family: var(--font-base);
  font-weight: 500;
  font-size: 1.3rem;
  color: var(--ink);
  margin-bottom: 1.75rem;
  padding-left: .9rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  border-left: 4px solid transparent;
  border-image: var(--grad-brand) 1;
}

/* ── Form grid ──────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem 1.5rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-field label {
  font-weight: 600;
  font-size: .78rem;
  color: var(--ink-soft);
  letter-spacing: .04em;
  text-transform: uppercase;
}

.form-field input,
.form-field select,
.form-field textarea {
  font-family: var(--font-base);
  font-size: .95rem;
  color: var(--ink);
  background: var(--surface-2);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  padding: .7rem .9rem;
  width: 100%;
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
  outline: none;
}

/* Réinitialise l'apparence native uniquement sur les champs texte/sélecteurs,
   jamais sur les cases à cocher ou boutons radio. */
.form-field input:not([type="checkbox"]):not([type="radio"]),
.form-field select,
.form-field textarea {
  appearance: none;
  -webkit-appearance: none;
}

.form-field input:not([type="checkbox"]):not([type="radio"]):focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--c-bleu);
  background: var(--surface);
  box-shadow: var(--ring);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--ink-muted);
  opacity: .9;
}

.form-field input[aria-invalid="true"],
.form-field select[aria-invalid="true"],
.form-field textarea[aria-invalid="true"] {
  border-color: #e5484d;
  background: #fff5f5;
  box-shadow: 0 0 0 4px rgba(229, 72, 77, .12);
}

.form-field textarea {
  resize: vertical;
  min-height: 96px;
  line-height: 1.5;
}

/* Select arrow */
.form-field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='none' stroke='%2351616b' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round' d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

/* File input */
.form-field input[type="file"] {
  padding: .55rem .7rem;
  font-size: .875rem;
  cursor: pointer;
  color: var(--ink-soft);
}

.form-field input[type="file"]::file-selector-button {
  font-family: var(--font-base);
  font-weight: 500;
  font-size: .82rem;
  color: var(--c-bleu);
  background: var(--grad-brand-soft);
  border: none;
  border-radius: var(--radius-pill);
  padding: .4rem .9rem;
  margin-right: .8rem;
  cursor: pointer;
  transition: background var(--t), color var(--t);
}

.form-field input[type="file"]::file-selector-button:hover {
  background: var(--c-bleu);
  color: var(--c-blanc);
}

/* ── Checkbox personnalisée ─────────────────────────────── */
.form-checkbox {
  display: flex;
  align-items: center;
  gap: .65rem;
  cursor: pointer;
  font-size: .92rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: .7rem .9rem;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  user-select: none;
  transition: border-color var(--t), background var(--t);
}

.form-checkbox:hover {
  border-color: var(--line-strong);
}

.form-checkbox input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin: 0;
  padding: 0;
  border: 1.5px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface);
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: background var(--t), border-color var(--t), box-shadow var(--t);
}

/* Le check dessiné en SVG, masqué tant que non coché */
.form-checkbox input[type="checkbox"]::before {
  content: "";
  width: 11px;
  height: 11px;
  transform: scale(0);
  transform-origin: center;
  transition: transform var(--t);
  background: var(--c-blanc);
  clip-path: polygon(14% 47%, 0 60%, 40% 100%, 100% 22%, 86% 8%, 38% 70%);
}

.form-checkbox input[type="checkbox"]:checked {
  background: var(--grad-brand);
  border-color: transparent;
}

.form-checkbox input[type="checkbox"]:checked::before {
  transform: scale(1);
}

.form-checkbox input[type="checkbox"]:focus-visible {
  box-shadow: var(--ring);
}

.form-checkbox:has(input:checked) {
  border-color: var(--c-bleu);
  background: var(--grad-brand-soft);
  color: var(--ink);
}

/* Feedback inline */
.form-feedback {
  font-size: .82rem;
  min-height: 1.1em;
  line-height: 1.45;
  transition: color var(--t);
}

.form-feedback--valid   { color: #18794e; }
.form-feedback--error   { color: #cd2b31; }
.form-feedback--loading { color: var(--ink-muted); font-style: italic; }

.form-feedback code {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: .05rem .35rem;
  font-size: .9em;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-family: var(--font-base);
  font-weight: 600;
  font-size: .95rem;
  padding: .75rem 1.85rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: box-shadow var(--t), transform var(--t), opacity var(--t), background var(--t);
  letter-spacing: .015em;
}

.btn:focus-visible {
  box-shadow: var(--ring);
}

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn-primary {
  background: var(--grad-brand);
  background-size: 160% 160%;
  background-position: 0% 50%;
  color: var(--c-blanc);
  box-shadow: 0 6px 18px -6px rgba(0, 177, 235, .55);
}

.btn-primary:not(:disabled):hover {
  background-position: 100% 50%;
  box-shadow: var(--shadow-brand);
  transform: translateY(-2px);
}

.btn-primary:not(:disabled):active {
  transform: translateY(0);
  box-shadow: 0 2px 8px -2px rgba(0, 177, 235, .4);
}

.btn-secondary {
  background: var(--surface);
  color: var(--c-bleu);
  border: 1.5px solid var(--line-strong);
}

.btn-secondary:not(:disabled):hover {
  border-color: var(--c-bleu);
  background: var(--grad-brand-soft);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--c-bleu);
  padding-left: .5rem;
  padding-right: .5rem;
}

.btn-ghost:hover {
  background: var(--grad-brand-soft);
}

/* Form actions row */
.form-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

/* ── Alerts ─────────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  padding: 1.15rem 1.3rem;
  border-radius: var(--radius);
  font-size: .95rem;
  line-height: 1.55;
  border: 1px solid transparent;
}

.alert--success {
  background: #ebfbf2;
  color: #14633b;
  border-color: rgba(24, 121, 78, .22);
}

.alert--error {
  background: #fff1f1;
  color: #a31419;
  border-color: rgba(205, 43, 49, .2);
}

.alert__icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: .05rem;
}

.alert__body { flex: 1; }
.alert__title {
  font-weight: 600;
  margin-bottom: .35rem;
}

.alert__list {
  margin: .5rem 0 0 1.25rem;
}

.alert__list li {
  margin-bottom: .2rem;
  font-size: .88rem;
}

/* ── Status card (cotation lookup) ──────────────────────── */
.status-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.35rem;
}

.status-card__row {
  display: flex;
  gap: .9rem;
  padding: .3rem 0;
  font-size: .92rem;
  align-items: baseline;
  border-bottom: 1px dashed var(--line);
}

.status-card__row:last-child { border-bottom: none; }

.status-card__label {
  font-weight: 600;
  color: var(--ink-muted);
  min-width: 84px;
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ── Link ────────────────────────────────────────────────── */
.link {
  color: var(--c-bleu);
  text-decoration: none;
  font-weight: 600;
  background-image: linear-gradient(var(--c-bleu), var(--c-bleu));
  background-size: 0% 1.5px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--t);
}

.link:hover { background-size: 100% 1.5px; }

/* ── Divider ─────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2rem 0;
}

/* ── Back link ───────────────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--ink-muted);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  transition: color var(--t), gap var(--t);
}

.back-link:hover {
  color: var(--c-bleu);
  gap: .7rem;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }

  .site-main {
    padding: 1.75rem 1.1rem;
  }

  .hero {
    padding: 2rem 1.5rem;
  }

  .hero__title {
    font-size: 1.75rem;
  }

  .site-header {
    padding: 0 1.1rem;
  }

  .site-header__brand {
    font-size: 1.2rem;
  }

  .card {
    padding: 1.4rem;
  }

  .form-actions {
    flex-wrap: wrap;
  }

  .btn {
    width: 100%;
  }
}