/* ==========================================================================
   BERCEO INGENIEROS - OPCIÓN 2: VANGUARDISTA & ESTUDIO DE INGENIERÍA
   ========================================================================== */

:root {
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-dark: #0f172a;
  --bg-dark-card: #1e293b;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-inverse: #f8fafc;
  
  --accent: #0d9488;
  --accent-light: #ccfbf1;
  --accent-dark: #115e59;
  --accent-cyan: #0284c7;
  
  --border-subtle: #e2e8f0;
  --border-dark: #334155;
  
  --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Space Mono', monospace, ui-monospace;
  
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 35px -5px rgba(15, 23, 42, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 25px rgba(13, 148, 136, 0.2);
  
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   FLOATING NAVBAR
   ========================================================================== */
.header-wrapper {
  position: fixed;
  top: 20px;
  left: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.nav-bar-floating {
  pointer-events: auto;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-full);
  padding: 8px 12px 8px 24px;
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: 1100px;
  width: calc(100% - 40px);
  justify-content: space-between;
  transition: var(--transition);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  height: 38px;
  width: auto;
}

.brand-title {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-pill {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  background: var(--bg-dark);
  color: #5eead4;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-item a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  transition: var(--transition);
}

.nav-item a:hover, .nav-item a.active {
  color: var(--text-main);
  background: rgba(15, 23, 42, 0.05);
}

.btn-nav-action {
  background: var(--bg-dark);
  color: #ffffff !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  padding: 10px 20px !important;
  border-radius: var(--radius-full) !important;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.btn-nav-action:hover {
  background: var(--accent) !important;
  transform: translateY(-1px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  padding-top: 150px;
  padding-bottom: 90px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.tag-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-light);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-heading {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--text-main);
  margin-bottom: 24px;
}

.hero-heading span.gradient-text {
  color: var(--accent);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 540px;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--text-main);
  color: #ffffff;
}

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

.btn-secondary {
  background: #ffffff;
  color: var(--text-main);
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.hero-showcase {
  position: relative;
}

.hero-image-card {
  position: relative;
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-subtle);
}

.hero-image-card img {
  border-radius: var(--radius-md);
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.hero-stat-floating {
  position: absolute;
  top: -24px;
  right: -20px;
  background: var(--bg-dark);
  color: #ffffff;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.hero-stat-floating .stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: #5eead4;
  line-height: 1;
}

.hero-stat-floating .stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  color: #94a3b8;
  margin-top: 6px;
}

/* ==========================================================================
   METRICS BAR
   ========================================================================== */
.metrics-section {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: #ffffff;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.03em;
}

.metric-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 4px;
}

.metric-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ==========================================================================
   ABOUT & METHODOLOGY
   ========================================================================== */
.section {
  padding: 100px 0;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-inverse);
}

.section-head {
  max-width: 680px;
  margin-bottom: 60px;
}

.section-head.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.section-dark .section-subtitle {
  color: var(--text-light);
}

.about-columns {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.75;
}

.about-text p strong {
  color: var(--text-main);
}

.specs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.spec-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
}

.spec-card:hover {
  transform: translateX(4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.spec-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.spec-icon svg {
  width: 22px;
  height: 22px;
}

.spec-content h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.spec-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ==========================================================================
   WORK PHASES (TIMELINE STYLE)
   ========================================================================== */
.phases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.phase-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.phase-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}

.phase-number {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: rgba(94, 234, 212, 0.4);
  line-height: 1;
  margin-bottom: 18px;
}

.phase-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.phase-card p {
  font-size: 0.9rem;
  color: #94a3b8;
  line-height: 1.65;
}

/* ==========================================================================
   CLIENT LOGOS & BADGES
   ========================================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.client-item {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.client-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  color: var(--accent);
}

.client-type {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   TEAM & TECHNICAL RESOURCES
   ========================================================================== */
.team-resources-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.resource-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.resource-card h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.resource-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  list-style: none;
}

.resource-list-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-main);
}

.resource-bullet {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--accent);
  margin-top: 8px;
  flex-shrink: 0;
}

/* ==========================================================================
   CONTACT TERMINAL
   ========================================================================== */
.contact-container {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.contact-sidebar {
  background: var(--bg-dark);
  color: #ffffff;
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-sidebar h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.contact-sidebar p {
  color: #94a3b8;
  font-size: 0.95rem;
  margin-bottom: 36px;
}

.direct-channels {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.channel-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-dark);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 16px;
}

.channel-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-xs);
  background: rgba(94, 234, 212, 0.15);
  color: #5eead4;
  display: flex;
  align-items: center;
  justify-content: center;
}

.channel-text .channel-name {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #94a3b8;
  text-transform: uppercase;
}

.channel-text a, .channel-text span {
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
}

.contact-form-area {
  padding: 48px 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-field {
  margin-bottom: 16px;
}

.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-field input, .form-field textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-primary);
  font-size: 0.92rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-body);
  transition: var(--transition);
}

.form-field input:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-feedback {
  display: none;
  padding: 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 0.88rem;
}

.form-feedback.show {
  display: block;
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-dark);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border-dark);
}

.footer-nav {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-nav a {
  font-size: 0.9rem;
  color: #94a3b8;
}

.footer-nav a:hover {
  color: #5eead4;
}

.footer-bottom-bar {
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   PROJECTS GALLERY & LIGHTBOX
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.project-img-container {
  position: relative;
  width: 100%;
  padding-top: 62%; /* Relación de aspecto 16:10 */
  overflow: hidden;
  background: #000000;
  cursor: pointer;
}

.project-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-img {
  transform: scale(1.05);
}

.project-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.project-img-container:hover .project-img-overlay {
  opacity: 1;
}

.overlay-btn {
  background: #ffffff;
  color: var(--text-main);
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-md);
  transform: translateY(8px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background 0.2s ease;
}

.project-img-container:hover .overlay-btn {
  transform: translateY(0);
}

.overlay-btn:hover {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.project-content {
  padding: 30px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  margin-bottom: 14px;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Lightbox Modal */
.lightbox-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.95);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.lightbox-modal.open {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 90%;
  max-height: 85%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-img {
  max-width: 100%;
  max-height: 70vh;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
  object-fit: contain;
}

.lightbox-caption {
  color: #ffffff;
  margin-top: 18px;
  font-size: 1.05rem;
  text-align: center;
  font-weight: 600;
}

.lightbox-counter {
  color: var(--text-light);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-top: 6px;
}

.lightbox-close {
  position: absolute;
  top: 25px;
  right: 25px;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 2.5rem;
  cursor: pointer;
  transition: var(--transition);
  z-index: 10000;
  line-height: 1;
}

.lightbox-close:hover {
  color: var(--accent);
  transform: scale(1.1);
}

.lightbox-prev, .lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: #ffffff;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 1.6rem;
  user-select: none;
}

.lightbox-prev:hover, .lightbox-next:hover {
  background: var(--accent);
  color: #ffffff;
}

.lightbox-prev {
  left: 30px;
}

.lightbox-next {
  right: 30px;
}

/* Contact phone styling */
.channel-number {
  color: var(--text-inverse);
  font-weight: 600;
  font-size: 1.1rem;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid, .about-columns, .contact-container {
    grid-template-columns: 1fr;
  }
  
  .phases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .metrics-grid, .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .team-resources-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-bar-floating {
    border-radius: var(--radius-md);
    padding: 12px 18px;
    gap: 16px;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: #ffffff;
    padding: 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    align-items: flex-start;
    border: 1px solid var(--border-subtle);
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .hero-heading {
    font-size: 2.4rem;
  }
  
  .phases-grid, .metrics-grid, .clients-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .contact-sidebar, .contact-form-area {
    padding: 30px 20px;
  }
}