/**
 * COMPONENTS CSS - Composants réutilisables
 * Méthodologie BEM - 100% fait maison
 */

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover,
.btn--primary:focus {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn--secondary:hover,
.btn--secondary:focus {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
}

.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--accent:hover,
.btn--accent:focus {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
  text-decoration: none;
}

.btn--large {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

.btn--small {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   CARDS
   ========================================================================== */

.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card__content {
  padding: var(--spacing-6);
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-3);
  color: var(--color-neutral-900);
}

.card__text {
  color: var(--color-neutral-600);
  margin-bottom: var(--spacing-4);
}

.card__footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-neutral-200);
  background-color: var(--color-neutral-50);
}

/* Card variants */
.card--horizontal {
  display: flex;
  flex-direction: column;
}

.card--horizontal .card__image {
  height: 160px;
}

@media (min-width: 768px) {
  .card--horizontal {
    flex-direction: row;
  }

  .card--horizontal .card__image {
    width: 200px;
    height: auto;
  }
}

/* ==========================================================================
   FORMS
   ========================================================================== */

.form-group {
  margin-bottom: var(--spacing-6);
}

.form-label {
  display: block;
  font-weight: 500;
  color: var(--color-neutral-700);
  margin-bottom: var(--spacing-2);
}

.form-label--required::after {
  content: ' *';
  color: var(--color-accent);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-neutral-300);
  border-radius: var(--border-radius);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-1);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.nav__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-6);
}

.nav__item {
  position: relative;
}

.nav__link {
  display: block;
  padding: var(--spacing-2) var(--spacing-3);
  color: var(--color-neutral-700);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link:focus,
.nav__link--active {
  color: var(--color-primary);
  background-color: var(--color-neutral-100);
  text-decoration: none;
}

/* Mobile menu toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-neutral-700);
  padding: var(--spacing-2);
}

@media (max-width: 767px) {
  .nav__toggle {
    display: block;
  }

  .nav__list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-4);
    gap: var(--spacing-2);
  }

  .nav__list--open {
    display: flex;
  }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: var(--spacing-20) 0;
  text-align: center;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary));
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.05)" points="0,1000 1000,0 1000,1000"/></svg>');
  background-size: cover;
}

.hero__content {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.hero__title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-6);
  color: var(--color-white);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-8);
  opacity: 0.9;
}

@media (min-width: 768px) {
  .hero {
    min-height: 70vh;
  }

  .hero__title {
    font-size: var(--font-size-5xl);
  }
}

/* ==========================================================================
   SECTION LAYOUT
   ========================================================================== */

.section {
  padding: var(--spacing-16) 0;
}

.section--alt {
  background-color: var(--color-neutral-50);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.section__title {
  margin-bottom: var(--spacing-4);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-neutral-600);
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================================================
   GRID SYSTEM
   ========================================================================== */

.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

@media (min-width: 768px) {
  .grid {
    gap: var(--spacing-8);
  }
}