/* ==========================================
   Ruby42 — Static Website Styles
   ========================================== */

/* --- Custom Properties --- */
:root {
  --color-bg: #fafafa;
  --color-text: #1a1a2e;
  --color-accent: #e63946;
  --color-accent-dark: #c5303c;
  --color-light: #f1f1f1;
  --color-white: #ffffff;
  --color-muted: #6b7280;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --color-border: #ddd;
  --header-bg: rgba(250, 250, 250, 0.95);
  --radius: 12px;
  --transition: 0.3s ease;
}

/* --- Dark Theme (auto from device settings) --- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121220;
    --color-text: #e8e8ed;
    --color-accent: #e63946;
    --color-accent-dark: #f04e5a;
    --color-light: #2a2a3d;
    --color-white: #1a1a2e;
    --color-muted: #9ca3af;
    --color-border: #2a2a3d;
    --header-bg: rgba(18, 18, 32, 0.95);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

/* --- Language Toggle (CSS-driven visibility) --- */
html:not([lang="fr"]) [data-lang="fr"] {
  display: none !important;
}

html[lang="fr"] [data-lang="en"] {
  display: none !important;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Section Titles --- */
.section__title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
}

.section__subtitle {
  text-align: center;
  color: var(--color-muted);
  margin-bottom: 3rem;
  font-size: 1.1rem;
}

/* --- Button --- */
.btn {
  display: inline-block;
  background-color: var(--color-accent);
  color: #ffffff;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition);
}

.btn:hover {
  background-color: var(--color-accent-dark);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* ==========================================
   HEADER / NAV
   ========================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--header-bg);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo-svg {
  height: 36px;
  width: auto;
}

.logo-text-ruby {
  fill: var(--color-text);
}

.logo-text-42 {
  fill: var(--color-accent);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav__link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  transition: color var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__link:hover {
  color: var(--color-accent);
}

/* Language Toggle */
.lang-toggle {
  background: none;
  border: 1px solid var(--color-light);
  border-radius: 6px;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-muted);
  transition: border-color var(--transition);
}

.lang-toggle:hover {
  border-color: var(--color-accent);
}

.lang-toggle__option {
  transition: color var(--transition);
}

.lang-toggle__option.active {
  color: var(--color-accent);
}

.lang-toggle__separator {
  color: var(--color-light);
}

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================
   HERO
   ========================================== */
.hero {
  padding: 10rem 0 6rem;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero__subtitle {
  font-size: 1.2rem;
  color: var(--color-muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

/* ==========================================
   TRUSTED BY
   ========================================== */
.trusted {
  padding: 3rem 0 1rem;
}

.trusted__heading {
  text-align: center;
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.trusted__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.trusted__logo {
  color: var(--color-muted);
  opacity: 0.45;
  transition: opacity var(--transition);
}

.trusted__logo:hover {
  opacity: 1;
}

.trusted__logo svg {
  height: 40px;
  width: auto;
}

.trusted__logo--wide svg {
  height: 50px;
}

/* ==========================================
   SERVICES
   ========================================== */
.services {
  padding: 6rem 0;
  background-color: var(--color-white);
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.card__icon {
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================
   TEAM
   ========================================== */
.team {
  padding: 6rem 0;
}

.team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.team-card {
  text-align: center;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.team-card__avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto 1.25rem;
  object-fit: cover;
}

.team-card__name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.team-card__links {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.team-card__social {
  color: var(--color-muted);
  transition: color var(--transition);
}

.team-card__social:hover {
  color: var(--color-accent);
}

/* ==========================================
   CONTACT
   ========================================== */
.contact {
  padding: 6rem 0;
  background-color: var(--color-white);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.contact-form__group {
  margin-bottom: 1.5rem;
}

.contact-form__group label {
  display: block;
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.contact-form__group input,
.contact-form__group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form__group input:focus,
.contact-form__group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.15);
}

.contact-form__group textarea {
  resize: vertical;
}

.contact-form .btn {
  width: 100%;
  padding: 1rem;
  font-size: 1.05rem;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--color-light);
}

.footer__link {
  color: var(--color-muted);
  transition: color var(--transition);
}

.footer__link:hover {
  color: var(--color-accent);
}

/* ==========================================
   SCROLL ANIMATIONS
   ========================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   RESPONSIVE — Tablet (768px)
   ========================================== */
@media (min-width: 768px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hero h1 {
    font-size: 3.5rem;
  }
}

/* ==========================================
   RESPONSIVE — Desktop (1024px)
   ========================================== */
@media (min-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==========================================
   RESPONSIVE — Mobile (< 768px)
   ========================================== */
@media (max-width: 767px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    flex-direction: column;
    background-color: var(--color-bg);
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform var(--transition);
    z-index: 999;
  }

  .nav__menu.open {
    transform: translateY(0);
  }

  .hero {
    padding: 8rem 0 4rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1.05rem;
  }

  .section__title {
    font-size: 1.65rem;
  }

  .services,
  .team,
  .contact {
    padding: 4rem 0;
  }
}