/* ============================================
   Re•sonas Design System — components.css
   Shared UI Components
   ============================================ */

/* ===== HEADER / NAVIGATION ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-header__logo img {
  height: 28px;
  width: auto;
}

.site-header__logo-text {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 400;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-primary);
}

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

.site-nav__link {
  font-size: var(--font-size-sm);
  font-weight: 400;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-text);
  position: relative;
  padding: var(--space-xs) 0;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.site-nav__link:hover {
  opacity: 1;
  color: var(--color-primary);
}

.site-nav__link:hover::after {
  width: 100%;
}

/* Hamburger (Mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  height: 20px;
  justify-content: center;
  cursor: pointer;
  z-index: 1001;
}

.hamburger__line {
  width: 100%;
  height: 1.5px;
  background: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.is-active .hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.hamburger.is-active .hamburger__line:nth-child(2) {
  opacity: 0;
}
.hamburger.is-active .hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-white);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-nav.is-open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav__link {
  font-size: var(--font-size-xl);
  font-weight: 300;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-primary);
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: 0 var(--container-padding);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--font-size-hero);
  font-weight: 300;
  letter-spacing: var(--letter-spacing-wider);
  line-height: 1.2;
}

.hero__subtitle {
  font-size: var(--font-size-base);
  font-weight: 300;
  letter-spacing: var(--letter-spacing-wide);
  margin-top: var(--space-lg);
  opacity: 0.85;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 36px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: var(--letter-spacing-wide);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  border: 1px solid var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-white);
  color: var(--color-accent);
  opacity: 1;
}

.btn--ghost {
  background: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-white);
}

.btn--ghost:hover {
  background: var(--color-white);
  color: var(--color-accent);
  opacity: 1;
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
  opacity: 1;
}

.btn--lg {
  padding: 18px 48px;
  font-size: var(--font-size-base);
}

/* ===== SECTION HEADER ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header__label {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-text-muted);
  text-transform: uppercase;
  display: block;
  margin-bottom: var(--space-md);
}

.section-header__title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-primary);
}

.section-header__divider {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-primary);
  margin: var(--space-lg) auto 0;
}

/* ===== CARDS ===== */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.card__body {
  padding: var(--space-lg);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: var(--line-height);
}

/* ===== GRID ===== */
.grid {
  display: grid;
  gap: var(--space-xl);
}

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

/* ===== FEATURE ROW (Icon + Text) ===== */
.feature {
  text-align: center;
  padding: var(--space-xl);
}

.feature__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-lg);
  color: var(--color-primary);
}

.feature__title {
  font-size: var(--font-size-md);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.feature__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-4xl) var(--container-padding);
}

.cta-section__title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.cta-section__text {
  font-size: var(--font-size-base);
  opacity: 0.8;
  margin-bottom: var(--space-xl);
}

/* ===== PAGE HERO (Sub Pages) ===== */
.page-hero {
  padding-top: calc(72px + var(--space-4xl));
  padding-bottom: var(--space-3xl);
  background: var(--color-bg);
  text-align: center;
}

.page-hero__label {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.page-hero__title {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  color: var(--color-primary);
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.site-footer__brand {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--space-md);
}

.site-footer__desc {
  font-size: var(--font-size-sm);
  opacity: 0.6;
  line-height: var(--line-height);
}

.site-footer__heading {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  opacity: 0.5;
  margin-bottom: var(--space-lg);
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.site-footer__link {
  font-size: var(--font-size-sm);
  opacity: 0.7;
}

.site-footer__link:hover {
  opacity: 1;
}

.site-footer__bottom {
  margin-top: var(--space-3xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: var(--font-size-xs);
  opacity: 0.4;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ===== FORM ===== */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.form-label__required {
  color: #ef4444;
  font-size: var(--font-size-xs);
  margin-left: var(--space-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  min-height: 160px;
  resize: vertical;
}

.form-select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1023px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 767px) {
  .site-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .site-header__inner {
    height: 60px;
  }

  .hero {
    min-height: 500px;
  }

  .hero__title {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }

  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }

  .site-footer__links {
    align-items: center;
  }

  .page-hero {
    padding-top: calc(60px + var(--space-3xl));
  }

  .page-hero__title {
    font-size: var(--font-size-2xl);
  }

  .btn--lg {
    padding: 14px 32px;
    font-size: var(--font-size-sm);
  }
}