/* ═══════════════════════════════════════════════
   NextEkip — Design Tokens & Styles
   Education accessibility / social mission
   Green-blue palette derived from logo
   ═══════════════════════════════════════════════ */

/* --- Fonts --- */
/* General Sans for body, Chillax for display — friendly/education tone */

/* --- Type Scale --- */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Font families */
  --font-display: 'Chillax', 'General Sans', sans-serif;
  --font-body: 'General Sans', 'Inter', sans-serif;
}

/* --- Light Mode (default) --- */
:root, [data-theme="light"] {
  /* Surfaces — cool white with slight warmth */
  --color-bg:             #f5f8f7;
  --color-surface:        #ffffff;
  --color-surface-2:      #f0f5f3;
  --color-surface-offset: #e8eeeb;
  --color-divider:        #d4ddd8;
  --color-border:         #c5d1cb;

  /* Text */
  --color-text:           #1a2b25;
  --color-text-muted:     #3d5248;
  --color-text-faint:     #5a6e66;
  --color-text-inverse:   #f5f8f7;

  /* Primary — NextEkip Green (from logo) */
  --color-primary:        #3aaa35;
  --color-primary-hover:  #2e8a2a;
  --color-primary-active: #236d20;
  --color-primary-light:  #e8f5e7;
  --color-primary-accessible: #236d20; /* texte sur fond clair : 6.4:1 sur blanc, 5.7:1 sur primary-light */
  --color-on-primary: #ffffff;          /* texte blanc sur --color-primary-accessible (#236d20) : 6:1 */

  /* Secondary — NextEkip Blue (from logo) */
  --color-secondary:      #0099cc;
  --color-secondary-hover:#007da8;
  --color-secondary-active:#006185;
  --color-secondary-light:#e5f4fa;

  /* Accent gradient (logo colors) */
  --gradient-brand: linear-gradient(135deg, #3aaa35, #0099cc);
  --gradient-brand-soft: linear-gradient(135deg, #e8f5e7, #e5f4fa);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26, 43, 37, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 43, 37, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 43, 37, 0.12);
  --shadow-card: 0 2px 12px rgba(26, 43, 37, 0.06);
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --color-bg:             #0f1614;
  --color-surface:        #162019;
  --color-surface-2:      #1c2a22;
  --color-surface-offset: #1a241e;
  --color-divider:        #2a3c32;
  --color-border:         #354a3d;

  --color-text:           #d0ddd6;
  --color-text-muted:     #7a9488;
  --color-text-faint:     #4d6358;
  --color-text-inverse:   #1a2b25;

  --color-primary:        #5cc858;
  --color-primary-hover:  #44b040;
  --color-primary-active: #3a9836;
  --color-primary-light:  #1c3018;
  --color-primary-accessible: #5cc858; /* même valeur que primary en dark : passe sur fond sombre */
  --color-on-primary: #0f1614;          /* texte sur fond de couleur primaire */

  --color-secondary:      #4db8d8;
  --color-secondary-hover:#38a0c0;
  --color-secondary-active:#2889a5;
  --color-secondary-light:#152a30;

  --gradient-brand: linear-gradient(135deg, #5cc858, #4db8d8);
  --gradient-brand-soft: linear-gradient(135deg, #1c3018, #152a30);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #0f1614;
    --color-surface:        #162019;
    --color-surface-2:      #1c2a22;
    --color-surface-offset: #1a241e;
    --color-divider:        #2a3c32;
    --color-border:         #354a3d;
    --color-text:           #d0ddd6;
    --color-text-muted:     #7a9488;
    --color-text-faint:     #4d6358;
    --color-text-inverse:   #1a2b25;
    --color-primary:        #5cc858;
    --color-primary-hover:  #44b040;
    --color-primary-active: #3a9836;
    --color-primary-light:  #1c3018;
    --color-primary-accessible: #5cc858;
    --color-on-primary: #0f1614;
    --color-secondary:      #4db8d8;
    --color-secondary-hover:#38a0c0;
    --color-secondary-active:#2889a5;
    --color-secondary-light:#152a30;
    --gradient-brand: linear-gradient(135deg, #5cc858, #4db8d8);
    --gradient-brand-soft: linear-gradient(135deg, #1c3018, #152a30);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3);
  }
}


/* ═══════════════════════════════════════════════
   LAYOUT & COMPONENTS
   ═══════════════════════════════════════════════ */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--narrow {
  max-width: var(--content-default);
}

/* --- Header / Navigation --- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow 0.3s ease;
}

.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.header__logo-img {
  height: 44px;
  width: auto;
  display: block;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.header__links a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  position: relative;
}

.header__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.25s ease;
}

.header__links a:hover {
  color: var(--color-text);
}

.header__links a:hover::after {
  width: 100%;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: transparent;
}

.theme-toggle:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.25s ease;
}

/* --- Hero Section --- */
.hero {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 200%;
  background: var(--gradient-brand-soft);
  opacity: 0.5;
  border-radius: 50%;
  z-index: -1;
  filter: blur(80px);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary-light);
  color: var(--color-primary-accessible);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero__title span {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: 1.6;
}

.hero__cta-group {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-interactive);
}

.btn--primary {
  background: var(--color-primary-accessible);
  color: var(--color-on-primary);
}

.btn--primary:hover {
  background: var(--color-primary-active);
  box-shadow: 0 4px 16px rgba(35, 109, 32, 0.35);
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* --- Section shared styles --- */
.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

.section--alt {
  background: var(--color-surface-2);
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary-accessible);
  margin-bottom: var(--space-4);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.section__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
}

/* --- Mission Section --- */
.mission {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.mission__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mission__icon-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.mission__icon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-card);
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.mission__icon-card svg {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
}

.mission__icon-card span {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

/* --- About / Pourquoi / Valeurs cards --- */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.info-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.info-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
}

.info-card__icon--green {
  background: var(--color-primary-light);
  color: var(--color-primary-accessible);
}

.info-card__icon--blue {
  background: var(--color-secondary-light);
  color: var(--color-secondary);
}

.info-card__icon svg {
  width: 24px;
  height: 24px;
}

.info-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.info-card__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Values Section --- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.value-item {
  text-align: center;
  padding: var(--space-6);
}

.value-item__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--gradient-brand-soft);
  margin-inline: auto;
  margin-bottom: var(--space-4);
  color: var(--color-primary-accessible);
}

.value-item__icon svg {
  width: 24px;
  height: 24px;
}

.value-item__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.value-item__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Contact Section --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
  margin-top: var(--space-10);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-item__icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  color: var(--color-primary-accessible);
}

.contact-item__icon svg {
  width: 20px;
  height: 20px;
}

.contact-item__label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.contact-item__value {
  font-size: var(--text-base);
  color: var(--color-text);
  font-weight: 500;
}

.contact-item__value a {
  color: var(--color-primary-accessible);
  text-decoration: none;
}

.contact-item__value a:hover {
  text-decoration: underline;
}

.contact-map {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  overflow: hidden;
  height: 320px;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* --- Footer --- */
.footer {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}

.footer__eco {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding-block: var(--space-5);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  flex-wrap: wrap;
}

.footer__eco-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary-accessible);
  max-width: none;
}

.footer__eco-label svg {
  flex-shrink: 0;
  color: var(--color-primary-accessible);
}

.footer__eco-scores {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.eco-score {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4) var(--space-2) var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.eco-score:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.eco-score__grade {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  color: #fff;
  flex-shrink: 0;
}

.eco-score__grade--green { background: var(--color-primary-accessible); }
.eco-score__grade--blue  { background: var(--color-secondary); }

.eco-score__body {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.eco-score__name {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1;
}

.eco-score__value {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  line-height: 1;
}

.eco-score__sub {
  color: var(--color-text-faint);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__text {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.footer__links a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer__links a:hover {
  color: var(--color-primary);
}

/* --- Scroll animations --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════ */

@media (max-width: 1024px) {
  .mission {
    gap: var(--space-12);
  }

  .mission__icon-card {
    padding: var(--space-5);
  }
}

@media (max-width: 900px) {
  .mission {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .mission__visual {
    width: 100%;
  }

  .mission__icon-grid {
    width: 100%;
    max-width: 560px;
    margin-inline: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .info-grid {
    grid-template-columns: 1fr;
  }

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

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .mission {
    gap: var(--space-8);
  }

  .mission__icon-grid {
    max-width: 520px;
    gap: var(--space-3);
  }

  .mission__icon-card {
    min-height: 118px;
    padding: var(--space-5) var(--space-4);
  }

  .info-card {
    padding: var(--space-6);
  }
}

@media (max-width: 640px) {
  .header__links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header__links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-6);
    gap: var(--space-4);
    box-shadow: var(--shadow-md);
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .mission__icon-grid {
    max-width: 420px;
    gap: var(--space-3);
  }

  .mission__icon-card {
    padding: var(--space-5);
  }

  .info-card {
    padding: var(--space-5);
  }

  .info-card__icon {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-3);
  }

  .info-card__icon svg {
    width: 20px;
    height: 20px;
  }

  .hero__title {
    font-size: clamp(1.5rem, 1rem + 3vw, 2.5rem);
  }

  .hero__cta-group {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 420px) {
  .mission__icon-grid {
    grid-template-columns: 1fr;
    max-width: none;
  }

  .mission__icon-card {
    min-height: 120px;
  }
}

@media (max-width: 390px) {
  #mission .container {
    padding-inline: var(--space-4);
  }

  .mission__icon-card {
    min-height: 110px;
    padding: var(--space-4);
  }

  .mission__icon-card svg {
    width: 34px;
    height: 34px;
  }

  .info-card {
    padding: var(--space-4);
  }

  .info-card__icon {
    width: 36px;
    height: 36px;
    margin-bottom: var(--space-2);
  }

  .info-card__title {
    font-size: var(--text-base);
  }

  .info-card__text {
    font-size: var(--text-sm);
  }
}