/* =============================================================================
   A.Gaveau – Graphiste & Webdesigner
   Design system : style.css
   ============================================================================= */

/* --- Fonts (Google Fonts) ---------------------------------------------------
   Importées dans le <head> de chaque page :
   Plus Jakarta Sans (titres) + Inter (texte courant)
   ----------------------------------------------------------------------------- */

:root {
  /* Couleurs */
  --color-ink: #14192b;          /* bleu nuit profond (texte, header) */
  --color-ink-soft: #2b3354;     /* variante plus claire */
  --color-gold: #c9a24b;         /* or champagne (accent premium) */
  --color-gold-dark: #ab8636;
  --color-cream: #faf8f4;        /* fond clair */
  --color-white: #ffffff;
  --color-gray-100: #f3f1ec;
  --color-gray-300: #e2dfd6;
  --color-gray-500: #8b8d9a;
  --color-gray-700: #4d5266;
  --color-success: #4c7a5d;

  /* Typographie */
  --font-heading: "Plus Jakarta Sans", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  /* Espacements */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Layout */
  --container-width: 1180px;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 40px rgba(20, 25, 43, 0.08);
  --shadow-strong: 0 20px 60px rgba(20, 25, 43, 0.16);
  --transition: 0.25s ease;
}

/* --- Reset -------------------------------------------------------------- */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-cream);
  line-height: 1.65;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* --- Layout helpers ------------------------------------------------------ */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

.section--tight {
  padding: var(--space-xl) 0;
}

.section--alt {
  background: var(--color-white);
}

.section--ink {
  background: var(--color-ink);
  color: var(--color-white);
}

.grid {
  display: grid;
  gap: var(--space-md);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 960px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

.text-center { text-align: center; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  margin-bottom: var(--space-sm);
}

.section--ink .eyebrow { color: var(--color-gold); }

/* --- Typography ----------------------------------------------------------- */

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-ink);
}

.section--ink h1, .section--ink h2, .section--ink h3 {
  color: var(--color-white);
}

h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  margin-bottom: var(--space-md);
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin-bottom: var(--space-sm);
}

h3 {
  font-size: 1.3rem;
  margin-bottom: var(--space-xs);
}

p {
  margin-bottom: var(--space-sm);
  color: var(--color-gray-700);
}

.section--ink p { color: var(--color-gray-300); }

.lead {
  font-size: 1.15rem;
  color: var(--color-gray-700);
  max-width: 640px;
}

.section--ink .lead { color: var(--color-gray-300); }

/* --- Buttons / CTA ---------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.85rem 1.7rem;
  border-radius: 999px;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-gold);
  color: var(--color-ink);
}

.btn--primary:hover {
  background: var(--color-gold-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn--secondary {
  background: transparent;
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.btn--secondary:hover {
  background: var(--color-ink);
  color: var(--color-white);
}

.section--ink .btn--secondary {
  border-color: var(--color-white);
  color: var(--color-white);
}

.section--ink .btn--secondary:hover {
  background: var(--color-white);
  color: var(--color-ink);
}

.btn--block {
  width: 100%;
  justify-content: center;
}

.cta-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-md);
}

/* --- Header / Navigation ----------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-300);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  max-width: var(--container-width);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--color-gold-dark);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__list {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.nav__list > li {
  position: relative;
}

.nav__list > li > a {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.5rem 0;
  transition: var(--transition);
}

.nav__list > li > a:hover,
.nav__list > li > a.is-active {
  color: var(--color-gold-dark);
}

.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-strong);
  padding: 0.6rem;
  min-width: 240px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: var(--transition);
}

.nav__list > li:hover .nav__dropdown,
.nav__list > li:focus-within .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown a {
  display: block;
  padding: 0.55rem 0.8rem;
  border-radius: 6px;
  font-size: 0.9rem;
  color: var(--color-gray-700);
  transition: var(--transition);
}

.nav__dropdown a:hover {
  background: var(--color-gray-100);
  color: var(--color-ink);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--color-ink);
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-cream);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-md);
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 0;
  }

  .nav__list > li {
    width: 100%;
    border-bottom: 1px solid var(--color-gray-300);
  }

  .nav__list > li > a {
    display: block;
    padding: var(--space-sm) 0;
  }

  .nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    display: none;
    padding-left: var(--space-sm);
  }

  .nav__list > li.is-open .nav__dropdown {
    display: block;
  }

  .nav .cta-group {
    margin: var(--space-md) 0;
    width: 100%;
  }
}

/* --- Hero ----------------------------------------------------------------- */

.hero {
  padding: var(--space-2xl) 0;
  background: linear-gradient(160deg, var(--color-ink) 0%, var(--color-ink-soft) 100%);
  color: var(--color-white);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
}

.hero h1 {
  color: var(--color-white);
}

.hero .lead {
  color: var(--color-gray-300);
}

.hero__visual {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  color: var(--color-gray-500);
  text-align: center;
  padding: var(--space-md);
}

/* --- Hero avec vidéo de fond ----------------------------------------------- */

.hero--video {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: 640px;
  display: flex;
  align-items: center;
}

.hero__bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(20, 25, 43, 0.92) 0%, rgba(43, 51, 84, 0.78) 100%);
  z-index: -1;
}

.hero__inner--video {
  grid-template-columns: 1fr;
}

.hero__inner--video > div {
  max-width: 720px;
}

@media (prefers-reduced-motion: reduce) {
  .hero__bg-video {
    display: none;
  }
}

.hero--page {
  padding: var(--space-xl) 0;
}

.hero--page .hero__inner {
  grid-template-columns: 1fr;
  text-align: center;
}

.hero--page .lead {
  max-width: 720px;
  margin: 0 auto var(--space-md);
}

.hero--page .cta-group {
  justify-content: center;
}

/* --- Breadcrumb ------------------------------------------------------------ */

.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-gray-300);
  margin-bottom: var(--space-sm);
}

.breadcrumb a {
  color: var(--color-gray-300);
  text-decoration: underline;
}

.breadcrumb a:hover {
  color: var(--color-gold);
}

/* --- Cards ------------------------------------------------------------------ */

.card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: var(--space-md);
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
}

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

.card__icon {
  font-size: 1.8rem;
  margin-bottom: var(--space-xs);
}

.card a.card__link {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-gold-dark);
  font-size: 0.9rem;
}

/* --- Stats / chiffres clés -------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  text-align: center;
}

@media (max-width: 760px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}

.stats__number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-gold-dark);
}

.section--ink .stats__number { color: var(--color-gold); }

.stats__label {
  font-size: 0.85rem;
  color: var(--color-gray-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section--ink .stats__label { color: var(--color-gray-300); }

/* --- Process steps ----------------------------------------------------------- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  counter-reset: step;
}

@media (max-width: 900px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
}

.steps__item {
  position: relative;
  padding-top: var(--space-lg);
}

.steps__item::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 0;
  left: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-gold);
  color: var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
}

/* --- Testimonials -------------------------------------------------------------- */

.testimonial {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: var(--space-md);
  box-shadow: var(--shadow);
  height: 100%;
}

.testimonial__stars {
  color: var(--color-gold);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.1em;
}

.testimonial__quote {
  font-style: italic;
  margin-bottom: var(--space-sm);
}

.testimonial__author {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
}

.testimonial__role {
  font-size: 0.8rem;
  color: var(--color-gray-500);
}

/* --- FAQ accordion -------------------------------------------------------------- */

.faq {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-xs);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq__question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-ink);
}

.faq__question::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--color-gold-dark);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq__item.is-open .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
  padding: 0 var(--space-md);
}

.faq__item.is-open .faq__answer {
  max-height: 600px;
  padding-bottom: var(--space-sm);
}

/* --- Forms ------------------------------------------------------------------------ */

.form-group {
  margin-bottom: var(--space-sm);
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-ink);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid var(--color-gold);
  border-color: var(--color-gold);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

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

.form-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow);
}

.form-note {
  font-size: 0.8rem;
  color: var(--color-gray-500);
}

#form-success {
  display: none;
  background: var(--color-success);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

#form-success.is-visible {
  display: block;
}

/* --- Bandeau CTA final --------------------------------------------------------------- */

.cta-band {
  background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold));
  color: var(--color-ink);
  border-radius: var(--radius);
  padding: var(--space-lg);
  text-align: center;
}

.cta-band h2 {
  margin-bottom: var(--space-xs);
}

.cta-band .cta-group {
  justify-content: center;
}

.cta-band .btn--secondary {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.cta-band .btn--secondary:hover {
  background: var(--color-ink);
  color: var(--color-white);
}

/* --- Tags / filtres (réalisations, blog) ------------------------------------------------ */

.tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
  justify-content: center;
}

.tag {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  color: var(--color-gray-700);
}

.tag.is-active,
.tag:hover {
  background: var(--color-ink);
  color: var(--color-white);
  border-color: var(--color-ink);
}

/* --- Footer -------------------------------------------------------------------------- */

.site-footer {
  background: var(--color-ink);
  color: var(--color-gray-300);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

@media (max-width: 900px) {
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .footer__grid { grid-template-columns: 1fr; }
}

.footer__grid h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.footer__grid ul li {
  margin-bottom: 0.5rem;
}

.footer__grid a:hover {
  color: var(--color-gold);
}

.footer__logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
  display: block;
}

.footer__logo span {
  color: var(--color-gold);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.85rem;
}

.footer__bottom a:hover {
  color: var(--color-gold);
}

/* --- Skip link / accessibilité --------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
}

.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
  background: var(--color-gold);
  color: var(--color-ink);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 200;
}

/* --- Images de réalisations (placeholders) ---------------------------------------------- */

.media-placeholder {
  background: var(--color-gray-100);
  border: 1px dashed var(--color-gray-300);
  border-radius: var(--radius-sm);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-500);
  font-size: 0.85rem;
  text-align: center;
  padding: var(--space-sm);
  margin-bottom: var(--space-sm);
}
