/* ============================================
   landing.css
   Estilos específicos para la Landing Page
   Biohuellas - Luminous Observer Design System
   ============================================ */

/* ============================================
   TYPOGRAPHY & HELPERS
   ============================================ */
.display-lg {
  font-size: var(--font-size-display-lg);
  font-weight: 800;
  letter-spacing: var(--letter-spacing-display);
  line-height: 1.1;
}

.display-md {
  font-size: var(--font-size-display-md);
  font-weight: 800;
  letter-spacing: var(--letter-spacing-display);
  line-height: 1.2;
}

.headline-lg {
  font-size: var(--font-size-headline-lg);
  font-weight: 700;
  line-height: 1.3;
}

.body-lg {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body);
}

.label-tag {
  display: inline-block;
  font-size: var(--font-size-label);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  background: var(--color-surface-container-high);
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-md);
}

.label-secondary { background: var(--color-secondary-container); color: var(--color-on-secondary-container); }
.label-tertiary { background: var(--color-tertiary-container); color: var(--color-on-tertiary-container); }

/* ============================================
   LAYOUT & CONTAINERS
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: var(--section-pad-y) 0;
}

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

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-4xl);
}

.section-lead {
  font-size: var(--font-size-title-md);
  color: var(--color-on-surface-variant);
  margin-top: var(--space-md);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  height: var(--btn-height-md);
  padding: 0 var(--btn-pad-x);
  border-radius: var(--btn-radius);
  font-weight: var(--btn-font-weight);
  font-size: var(--btn-font-size);
  transition: var(--btn-transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-ambient);
}

.btn-primary:hover {
  box-shadow: var(--shadow-float);
  transform: translateY(-2px);
}

.btn-tertiary:hover {
  background: var(--color-surface-container-highest);
}

.btn-text {
  background: transparent;
  color: var(--color-primary);
  padding-left: 0;
  padding-right: 0;
  font-weight: 700;
}

.btn-text:hover {
  text-decoration: underline;
  background: transparent;
}

.btn-large {
  height: var(--btn-height-lg);
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-fixed);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-ambient);
}

/* Custom Logo */
.custom-logo-link img {
  max-height: 50px;
  width: auto;
  display: block;
}

@media (max-width: 768px) {
  .custom-logo-link img {
    max-height: 40px;
  }
}

.header--scrolled {
  box-shadow: var(--header-shadow);
  border-bottom: var(--header-border);
  background: rgba(246, 251, 238, 0.9);
}

.header--hidden {
  transform: translateY(-100%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  height: var(--header-height);
}

.site-logo-link {
  display: flex;
  align-items: center;
}

.site-logo-img {
  max-height: 45px;
  width: auto;
  display: block;
}

.main-navigation ul {
  display: flex;
  gap: var(--space-lg);
}

.main-navigation a {
  font-weight: 600;
  color: var(--color-on-surface-variant);
  transition: var(--transition-fast);
}

.main-navigation a:hover,
.main-navigation a.is-active {
  color: var(--color-primary);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 24px;
  height: 20px;
  position: relative;
  z-index: 10;
}

.toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-on-surface);
  position: absolute;
  transition: var(--transition-fast);
}

.toggle-bar:nth-child(1) { top: 0; }
.toggle-bar:nth-child(2) { top: 9px; }
.toggle-bar:nth-child(3) { bottom: 0; }

.main-navigation.is-open ~ .menu-toggle .toggle-bar:nth-child(1) { transform: rotate(45deg); top: 9px; }
.main-navigation.is-open ~ .menu-toggle .toggle-bar:nth-child(2) { opacity: 0; }
.main-navigation.is-open ~ .menu-toggle .toggle-bar:nth-child(3) { transform: rotate(-45deg); bottom: 9px; }

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background-color: #f0f6e8; /* Light green background */
  padding-top: 160px; /* Increased to avoid header overlap */
  padding-bottom: var(--space-4xl);
  overflow: hidden;
}

.hero::before {
  display: none; /* Remove previous dark overlay */
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-4xl);
  align-items: center;
}

.hero-content {
  max-width: 650px;
  color: var(--color-on-surface);
}

.hero-content .display-lg {
  color: #1a1c18;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-xl); /* More space after title */
}

.hero-content .body-xl {
  color: #43493e;
  margin-bottom: var(--space-4xl); /* More space after description */
  font-size: 1.25rem;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-image-frame {
  position: relative;
  border-radius: 3.5rem;
  overflow: hidden;
  box-shadow: var(--shadow-float);
  aspect-ratio: 4/5;
  width: 100%;
  max-width: 450px;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 992px) {
  .hero {
    padding-top: 120px;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: left;
  }
  
  .hero-visual {
    order: -1;
    margin-bottom: var(--space-2xl);
  }
  
  .hero-image-frame {
    max-width: 100%;
    aspect-ratio: 16/9;
  }
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-headline {
  margin-bottom: var(--space-md);
  color: var(--color-on-surface);
}

.hero-lead {
  font-size: var(--font-size-title-md);
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-xl);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  padding-left: var(--space-4xl);
}

.hero-image-frame {
  background: var(--color-surface-container-high);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 500px;
  aspect-ratio: 4/5;
  overflow: hidden;
  box-shadow: var(--shadow-float);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-visual:hover .hero-img {
  transform: scale(1.05);
}

/* ============================================
   MISSION SECTION
   ============================================ */
.mission-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.mission-text .headline-lg {
  margin-bottom: var(--space-xl);
}

.mission-text .body-lg {
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-2xl);
}

.mission-pillars {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.pillar-item {
  display: flex;
  gap: var(--space-md);
}

.pillar-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 4px;
}

.mission-visual {
  display: flex;
  justify-content: center;
}

.mission-image-frame {
  background: var(--color-surface-container-high);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 500px;
  aspect-ratio: 4/5;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: var(--shadow-ambient);
}

.mission-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.mission-visual:hover .mission-img {
  transform: scale(1.05);
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-4xl);
}

.service-card {
  background: var(--color-surface-container-lowest);
  border-radius: 2.5rem; /* Extra rounded corners */
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  height: 100%;
  border: 1px solid rgba(191,202,182,0.15);
  box-shadow: var(--shadow-ambient);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-float);
}

.service-card-visual {
  width: 100%;
  aspect-ratio: 1/1;
  border-radius: 2rem;
  overflow: hidden;
  margin-bottom: var(--space-lg);
  background: var(--color-surface-container-low);
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-card-icon-fallback .service-icon-lg {
  width: 64px;
  height: 64px;
  color: var(--color-primary);
  opacity: 0.6;
}

.service-card-content {
  padding: 0 var(--space-sm) var(--space-sm);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-card-title {
  font-size: var(--font-size-headline-md);
  font-weight: 800;
  color: var(--color-on-surface);
  margin-bottom: var(--space-sm);
  line-height: 1.2;
}

.service-card-description {
  font-size: var(--font-size-body-md);
  color: var(--color-on-surface-variant);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
  text-align: justify;
}

.service-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
}

.service-icon-sm {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

/* Essence Section */
.essence-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.essence-header-divider {
  width: 60px;
  height: 4px;
  background: var(--color-primary);
  margin: var(--space-md) auto 0;
  border-radius: var(--radius-full);
}

.essence-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--color-surface-container-low);
  border-radius: 2.5rem;
  overflow: hidden;
  max-height: 580px; /* Cap growth */
  box-shadow: var(--shadow-ambient);
  transition: transform var(--transition-base);
}

.essence-row:hover {
  transform: scale(1.01);
}

.essence-row--reverse .essence-content {
  order: 2;
}

.essence-row--reverse .essence-image-wrap {
  order: 1;
}

.essence-content {
  padding: var(--space-3xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.essence-title {
  font-size: var(--font-size-headline-md);
  font-weight: 800;
  color: var(--color-on-surface);
  margin-bottom: var(--space-lg);
  line-height: 1.2;
}

.essence-text {
  font-size: var(--font-size-body-md);
  color: var(--color-on-surface-variant);
  line-height: 1.7;
}

.essence-image-wrap {
  width: 100%;
  height: 100%;
}

.essence-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* EDUCATION SECTION */
.education-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--color-surface-container-lowest);
  border-radius: 3rem;
  overflow: hidden;
  box-shadow: var(--shadow-ambient);
  padding: var(--space-xl);
  gap: var(--space-3xl);
  align-items: center;
}

.education-content {
  padding-left: var(--space-xl);
}

.edu-label {
  display: block;
  font-size: var(--font-size-label);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.education-card .headline-lg {
  margin-bottom: var(--space-lg);
  font-weight: 800;
}

.edu-description {
  color: var(--color-on-surface-variant);
  font-size: var(--font-size-body-lg);
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
}

.edu-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.edu-tag {
  background: #f0f6e8; /* Light green background */
  color: #166e00; /* Dark green text */
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-size: var(--font-size-body-md);
  font-weight: 700;
}

.education-image-wrap {
  border-radius: 2.5rem;
  overflow: hidden;
  aspect-ratio: 4/3;
  height: 100%;
}

.edu-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================
   FAUNA SECTION
   ============================================ */
.fauna-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.fauna-card {
  background: var(--color-surface-container-lowest);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-ambient);
  transition: var(--transition-base);
}

.fauna-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-float);
}

.fauna-card-photo {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.fauna-card:hover .fauna-card-photo {
  transform: scale(1.05);
}

.fauna-card-content {
  padding: var(--space-xl);
}

.fauna-tag {
  font-size: var(--font-size-label);
  color: var(--color-secondary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  margin-bottom: var(--space-sm);
  display: block;
}

.fauna-card-content h3 {
  font-size: var(--font-size-title-lg);
  font-weight: 700;
}

/* Honeypot field */
.hp-field {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

/* Form Feedback */
.form-feedback {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-weight: 600;
  font-size: var(--font-size-body-md);
  animation: fadeIn 0.4s ease-out;
}

.form-feedback--success {
  background: #eaf0e2;
  color: #166e00;
  border: 1px solid #bfcab6;
}

.form-feedback--error {
  background: #fdf2f2;
  color: #ba1a1a;
  border: 1px solid #f9d7d7;
}

.feedback-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
}

.contact-header p {
  color: var(--color-on-surface-variant);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  background: var(--color-surface-container-lowest);
  padding: var(--space-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-ambient);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: var(--font-size-label);
  font-weight: 700;
  color: var(--color-on-surface-variant);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0 var(--space-md);
  border: var(--input-border);
  border-radius: var(--input-radius);
  background: var(--input-bg);
  font-family: inherit;
  font-size: var(--font-size-body-md);
  color: var(--color-on-surface);
  transition: var(--transition-fast);
}

.form-group input,
.form-group select {
  height: var(--input-height);
}

.form-group textarea {
  padding: var(--space-md);
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  box-shadow: var(--input-focus-glow);
  border-color: var(--color-primary);
}

.field--error {
  border-color: var(--color-error) !important;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-surface-container-highest);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
  gap: var(--space-xl);
}

.footer-logo-link {
  display: block;
  margin-bottom: var(--space-md);
}

.footer-logo-img {
  max-height: 60px;
  width: auto;
  display: block;
}

.footer-tagline {
  color: var(--color-on-surface-variant);
}

.footer-navigation ul {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.footer-navigation a {
  font-weight: 600;
  color: var(--color-on-surface-variant);
  transition: var(--transition-fast);
}

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

.footer-legal {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-xl) var(--container-pad) 0;
  border-top: 1px solid rgba(191,202,182,0.3);
  display: flex;
  justify-content: space-between;
  color: var(--color-on-surface-variant);
  font-size: var(--font-size-label);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-legal-links {
  display: flex;
  gap: var(--space-md);
}

.footer-legal-links a:hover {
  color: var(--color-primary);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* ============================================
   MEDIA QUERIES
   ============================================ */
@media (max-width: 992px) {
  .hero-container,
  .mission-container,
  .education-card {
    grid-template-columns: 1fr;
    padding: var(--space-lg);
    gap: var(--space-xl);
  }
  
  .education-content {
    padding-left: 0;
    order: 2;
  }
  
  .education-image-wrap {
    order: 1;
    aspect-ratio: 16/9;
  }

  .contact-container {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .hero-visual {
    padding-left: 0;
  }

  .essence-row, .essence-row--reverse {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  
  .essence-row--reverse .essence-content {
    order: 1;
  }
  
  .essence-row--reverse .essence-image-wrap {
    order: 2;
  }
  
  .essence-content {
    padding: var(--space-xl);
  }

  .essence-image-wrap {
    height: 300px;
  }

  .education-container {
    text-align: center;
    justify-items: center;
  }
}

@media (max-width: 768px) {
  .header-cta {
    display: none;
  }

  .main-navigation {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-surface-container-lowest);
    padding: var(--space-xl) var(--container-pad);
    box-shadow: var(--shadow-ambient);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-base);
  }

  .main-navigation.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-navigation ul {
    flex-direction: column;
    gap: var(--space-md);
  }

  .menu-toggle {
    display: block;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-navigation ul {
    flex-direction: column;
    gap: var(--space-sm);
  }
}