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

html {
  scroll-behavior: smooth;
}

/* =========================
   Variables globales (mêmes que portfolio_web)
   ========================= */
:root {
  --color-bg: #05060a;
  --color-bg-alt: #111322;
  --color-text: #f4f4f4;

  --color-accent: #ffd700;
  --color-accent-gradient: linear-gradient(135deg, #6a82fb, #fc5c7d);
  --color-accent-soft-glow: 0 0 12px rgba(106, 130, 251, 0.55),
    0 0 18px rgba(252, 92, 125, 0.45);

  --color-accent-contrast: rgba(0, 0, 0, 0.7);

  --color-header-bg: rgba(0, 0, 0, 0.35);
  --color-card-front: rgba(255, 255, 255, 0.06);
  --color-card-back: rgba(0, 0, 0, 0.55);
  --color-footer-bg: rgba(0, 0, 0, 0.85);

  --color-input-border: #ccc;
  --color-input-focus: #6a82fb;

  --orb-primary-soft: #6a82fb33;
  --orb-secondary-soft: #fc5c7d33;
  --orb-inner-bg: #111322;
  --orb-primary: #6a82fbff;
  --orb-secondary: #fc5c7dff;

  --shadow-button: 0 6px 18px rgba(0, 0, 0, 0.4);
  --shadow-button-hover: 0 10px 26px rgba(0, 0, 0, 0.55);
}

body {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-text);
}

/* =========================
   Checkbox & bouton de thème
   ========================= */

.theme-switch {
  position: fixed;
  left: -9999px;
}

.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 50;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 8px 14px;
  background: rgba(0, 0, 0, 0.75);
  color: #f9fafb;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.8);
  transition: background-color 0.25s ease, box-shadow 0.25s ease,
    transform 0.25s ease, border-color 0.25s ease;
}

.theme-toggle i {
  font-size: 1rem;
}

/* icônes : lune visible par défaut, soleil caché */
.theme-toggle .icon-sun {
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.theme-toggle .icon-moon {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

/* quand on est en light (= checkbox cochée) */
.theme-switch:checked + .theme-toggle {
  background: rgba(20, 20, 40, 0.9);
  border-color: rgba(255, 255, 255, 0.4);
}

.theme-switch:checked + .theme-toggle .icon-sun {
  opacity: 1;
  transform: scale(1);
}
.theme-switch:checked + .theme-toggle .icon-moon {
  opacity: 0;
  transform: scale(0.6);
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.9);
}

/* =========================
   Page & background cross-fade
   ========================= */

.page {
  position: relative;
  min-height: 100vh;
  color: var(--color-text);
  transition: color 0.35s ease;
}

/* Deux calques de fond qui cross-fadent :
   - ::before = thème dark (fond façon portfolio_web)
   - ::after  = thème light (variante claire)
*/
.page::before,
.page::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

/* Fond dark : fond type choice/portfolio avec grille + orbes */
.page::before {
  opacity: 1;
  background:
    /* grille presque imperceptible */ linear-gradient(
      to right,
      #ffffff03 1px,
      transparent 1px
    ),
    linear-gradient(to bottom, #ffffff03 1px, transparent 1px),
    /* orbes + fond */
      radial-gradient(circle at 0% 0%, var(--orb-primary-soft), transparent 60%),
    radial-gradient(
      circle at 100% 100%,
      var(--orb-secondary-soft),
      transparent 60%
    ),
    radial-gradient(
      circle at 50% 120%,
      var(--orb-inner-bg),
      var(--color-bg) 70%
    );
  background-size: 40px 40px, 40px 40px, auto, auto, auto;
  mix-blend-mode: screen;
}

/* Fond light : même logique mais en version violette claire
   pour coller au thème clair du portfolio */
.page::after {
  opacity: 0;
  background: linear-gradient(to right, #ffffff05 1px, transparent 1px),
    linear-gradient(to bottom, #ffffff05 1px, transparent 1px),
    radial-gradient(circle at 0% 0%, rgba(255, 255, 255, 0.22), transparent 60%),
    radial-gradient(
      circle at 100% 100%,
      rgba(255, 255, 255, 0.2),
      transparent 60%
    ),
    radial-gradient(circle at 50% 120%, #9a94cc, #7c75b3 70%);
  background-size: 40px 40px, 40px 40px, auto, auto, auto;
  mix-blend-mode: screen;
}

/* Quand on bascule en light : cross-fade des backgrounds */
.theme-switch:checked ~ .page::before {
  opacity: 0;
}
.theme-switch:checked ~ .page::after {
  opacity: 1;
}

/* =========================
   Transitions globales sur les blocs
   ========================= */

.page,
.page * {
  transition-property: background-color, color, border-color, box-shadow;
  transition-duration: 0.35s;
  transition-timing-function: ease;
}

/* =========================
   Liens
   ========================= */

a {
  color: inherit;
  text-decoration: none;
}

/* =========================
   Hero
   ========================= */

.hero {
  padding: 80px 20px 60px;
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
  align-items: center;
  text-align: center;
}

.hero-logo img {
  height: 140px;
  width: auto;
  display: block;
  margin: 0 auto 20px;
  filter: drop-shadow(0 0 25px rgba(0, 0, 0, 0.85));
}

.hero-eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #a5b4fc;
  margin-bottom: 10px;
}

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.hero-text {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #e5e7eb;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  justify-content: center;
}

/* Thème light : texte un peu plus clair */
.theme-switch:checked ~ .page .hero-text {
  color: #f4f3ff;
}

/* =========================
   Boutons
   ========================= */

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
}

/* Bouton principal : même logique que les boutons du portfolio */
.btn-primary {
  background-image: var(--color-accent-gradient);
  background-size: 200% 200%;
  color: var(--color-accent-contrast);
  box-shadow: var(--shadow-button), var(--color-accent-soft-glow);
}

.btn-primary:hover {
  background-image: none;
  background-color: transparent;
  color: var(--color-text);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow-button-hover), 0 0 24px rgba(106, 130, 251, 0.6),
    0 0 28px rgba(252, 92, 125, 0.6);
  transform: translateY(-2px);
}

/* Bouton "ghost" : style secondaire mais cohérent */
.btn-ghost {
  background-color: rgba(3, 3, 10, 0.8);
  border-color: rgba(255, 255, 255, 0.18);
  color: var(--color-text);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
}

.btn-ghost:hover {
  background-color: rgba(0, 0, 0, 0.85);
  color: var(--color-accent);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.65), 0 0 20px rgba(252, 92, 125, 0.55);
}

/* Ghost en thème clair : fond violet */
.theme-switch:checked ~ .page .btn-ghost {
  background-color: #8b84c0;
  border-color: rgba(255, 255, 255, 0.4);
  color: #fdfbff;
}

/* =========================
   Sections
   ========================= */

.section {
  padding: 70px 20px;
}

/* Dark : fond alt sombre */
.section-alt {
  padding: 70px 20px;
  background-color: var(--color-bg-alt);
}

/* Light : alt = couleur secondaire du portfolio */
.theme-switch:checked ~ .page .section-alt {
  background-color: #8b84c0;
}

.section-header {
  max-width: 800px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-title {
  font-size: 2.1rem;
  margin-bottom: 14px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -10px;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  border-radius: 999px;
  background-image: var(--color-accent-gradient);
}

.section-subtitle {
  font-size: 0.98rem;
  color: #cbd5f5;
  line-height: 1.6;
}

.theme-switch:checked ~ .page .section-subtitle {
  color: #f0eeff;
}

/* =========================
   Grille de cartes
   ========================= */

.cards-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: 1.6rem;
}

@media (min-width: 900px) {
  .cards-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* =========================
   Cartes
   ========================= */

.card {
  padding: 24px 22px;
  border-radius: 18px;
  background-color: var(--color-card-front);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.75);
  /* backdrop-filter: blur(14px); */
  /* -webkit-backdrop-filter: blur(14px); */
  text-align: left;
  transition: all 0.3s ease;
}

.card-soft {
  background-color: var(--color-card-back);
  border-color: rgba(255, 255, 255, 0.08);
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.card p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: #e5e7eb;
}

.card-icon {
  font-size: 2.2rem;
  margin-bottom: 18px;
  color: var(--color-accent);
  text-shadow: 0 0 10px rgba(106, 130, 251, 0.55),
    0 0 18px rgba(252, 92, 125, 0.45);
}

/* Hover */
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 55px rgba(0, 0, 0, 0.9), 0 0 22px rgba(106, 130, 251, 0.35);
  border-color: rgba(255, 255, 255, 0.18);
}
.card:hover .card-icon {
  filter: drop-shadow(0 0 8px rgba(250, 204, 21, 0.7));
}

/* Light : cartes violettes type portfolio */
.theme-switch:checked ~ .page .card {
  background-color: #9a94cc;
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6);
}

.theme-switch:checked ~ .page .card-soft {
  background-color: #8b84c0;
}

.theme-switch:checked ~ .page .card p {
  color: #fefefe;
}

/* =========================
   Formulaire de contact
   ========================= */

.contact-form {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 620px;
  margin: 0 auto;
  background: rgba(3, 3, 10, 0.8);
  border-radius: 18px;
  padding: 24px 20px 26px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.85);
}

.contact-form button {
  margin: auto;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  margin-bottom: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--color-input-border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-text);
  font-size: 0.96rem;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease,
    background-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--color-input-focus);
  box-shadow: 0 0 12px rgba(106, 130, 251, 0.6);
  background: rgba(0, 0, 0, 0.4);
}

.contact-form textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-form .g-recaptcha {
  margin: 5px auto 10px;
}

/* Light = mêmes violets que portfolio */
.theme-switch:checked ~ .page .contact-form {
  background-color: #8b84c0;
  border-color: rgba(255, 255, 255, 0.4);
}

.theme-switch:checked ~ .page .contact-form input,
.theme-switch:checked ~ .page .contact-form textarea {
  background-color: #9a94cc;
  border-color: rgba(255, 255, 255, 0.45);
  color: #fefefe;
}

/* Message retour */
.form-message {
  margin-top: 20px;
  font-size: 1rem;
  text-align: center;
  color: var(--color-accent);
  font-weight: 600;
}

/* =========================
   Loader
   ========================= */

.loading-spinner {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  justify-content: center;
  background-color: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 9999;
  color: #e5e7eb;
  font-size: 1rem;
  text-align: center;
}

.circle-container {
  display: flex;
  gap: 10px;
  align-items: center;
}

.circle {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: var(--color-accent-gradient);
  animation: bounce 0.6s infinite alternate;
}

.circle:nth-child(2) {
  animation-delay: 0.15s;
}
.circle:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes bounce {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-16px);
  }
}

/* =========================
   Footer
   ========================= */

#footer {
  padding: 28px 20px 22px;
  background-color: #1d1a35;
  border-top: 1px solid rgba(31, 41, 55, 0.9);
  color: #9ca3af;
  font-size: 0.9rem;
  backdrop-filter: blur(14px);
}

.footer-content {
  max-width: 1100px;
  margin: 0 auto 12px;
  display: grid;
  gap: 24px;
  text-align: center;
}

.footer-section h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: #f9fafb;
}

.footer-section p {
  margin: 4px 0;
}

.footer-section p i {
  margin-right: 6px;
  text-shadow: 0 0 10px rgba(106, 130, 251, 0.55),
    0 0 18px rgba(252, 92, 125, 0.45);
  transition: text-shadow 0.25s ease, transform 0.25s ease;
}

.footer-section p i:hover {
  text-shadow: 0 0 18px rgba(106, 130, 251, 0.9),
    0 0 26px rgba(252, 92, 125, 0.8);
  transform: translateY(-1px);
}

.social-icons {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 10px;
}

.social-icons a {
  font-size: 1.4rem;
  padding: 6px;
}

.social-icons a:hover {
  transform: translateY(-2px);
  color: var(--color-accent);
}

.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  color: #6b7280;
}

/* Light footer = même couleur que portfolio */
.theme-switch:checked ~ .page #footer {
  background-color: #6c669b;
  border-top-color: rgba(255, 255, 255, 0.3);
  color: #f3f2ff;
}

.theme-switch:checked ~ .page #footer .footer-section h3 {
  color: #ffffff;
}

/* =========================
   Bouton "back to top"
   ========================= */

.back-to-top {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 45px;
  height: 45px;
  border-radius: 999px;
  border: none;
  background-image: var(--color-accent-gradient);
  background-size: 200% 200%;
  color: #ffffff;
  display: none; /* affiché par JS */
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6), 0 0 14px rgba(106, 130, 251, 0.55);
  z-index: 20;
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    background-position 0.25s ease, background-color 0.25s ease;
}

.back-to-top:hover {
  transform: translateY(-2px);
  background-image: none;
  background-color: rgba(0, 0, 0, 0.85);
  color: var(--color-accent);
  box-shadow: 0 18px 35px rgba(0, 0, 0, 0.8), 0 0 22px rgba(252, 92, 125, 0.7);
}

/* =========================
   Responsive
   ========================= */

@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.2fr);
    text-align: left;
  }

  .hero-logo {
    text-align: left;
  }

  .hero-text {
    margin-left: 0;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .footer-content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    text-align: left;
  }
}

@media (max-width: 600px) {
  .hero {
    padding-top: 60px;
  }

  .hero-logo img {
    height: 110px;
  }

  .section,
  .section-alt {
    padding: 60px 16px;
  }

  .theme-toggle {
    top: 12px;
    right: 12px;
  }
}