/* ==========================================================================
   TC DIGITAL (tcdigital.cl) - ESTUDIO DE INGENIERÍA & DESARROLLO DIGITAL
   Design System & Landing Page Styles
   ========================================================================== */

:root {
  --tc-primary: #2563EB;
  --tc-primary-hover: #1D4ED8;
  --tc-primary-light: #EFF6FF;
  
  --tc-accent: #0EA5E9;
  --tc-accent-light: #F0F9FF;
  
  --tc-dark: #0F172A;
  --tc-dark-card: #1E293B;
  --tc-slate: #334155;
  --tc-muted: #64748B;
  --tc-border: #E2E8F0;
  --tc-border-light: #F1F5F9;
  --tc-bg: #F8FAFC;
  --tc-surface: #FFFFFF;
  
  --tc-green: #10B981;
  --tc-green-light: #ECFDF5;
  --tc-amber: #F59E0B;
  
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.08);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-main);
  font-size: 16px;
  color: var(--tc-dark);
  background-color: var(--tc-bg);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--tc-border);
  transition: all var(--transition);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-badge {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--tc-primary) 0%, #1D4ED8 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--tc-dark);
}

.brand-subtitle {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--tc-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--tc-slate);
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--tc-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--tc-dark);
  color: white;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
  background: var(--tc-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  color: var(--tc-dark);
}

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

.hero-section {
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: var(--tc-primary-light);
  border: 1px solid #BFDBFE;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--tc-primary);
  margin-bottom: 1.5rem;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tc-green);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
}

.hero-headline {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--tc-dark);
  max-width: 960px;
  margin-bottom: 1.5rem;
}

.hero-headline span {
  color: var(--tc-primary);
  position: relative;
}

.hero-subheadline {
  font-size: 1.2rem;
  color: var(--tc-slate);
  max-width: 760px;
  line-height: 1.6;
  margin-bottom: 2.25rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--tc-primary);
  color: white;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  transition: all var(--transition);
}

.btn-primary:hover {
  background: var(--tc-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.45);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--tc-surface);
  color: var(--tc-dark);
  border: 1px solid var(--tc-border);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.btn-secondary:hover {
  border-color: var(--tc-primary);
  color: var(--tc-primary);
  background: #F8FAFC;
  transform: translateY(-2px);
}

/* Hero Stats / Trust Strip */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  background: var(--tc-surface);
  border: 1px solid var(--tc-border);
  border-radius: var(--radius-xl);
  padding: 1.75rem 2rem;
  box-shadow: var(--shadow-sm);
}

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

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--tc-dark);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--tc-muted);
}

/* ==========================================================================
   FEATURED CASE STUDY: SUPER 10 RETAIL
   ========================================================================== */

.featured-section {
  padding: 4rem 0;
}

.case-study-card {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  border-radius: var(--radius-xl);
  padding: 3rem;
  color: white;
  box-shadow: var(--shadow-xl);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.case-study-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(227, 6, 19, 0.2);
  border: 1px solid rgba(227, 6, 19, 0.5);
  color: #FCA5A5;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.case-study-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.case-study-desc {
  font-size: 1rem;
  color: #CBD5E1;
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.case-highlights-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.case-highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.85rem;
  color: #E2E8F0;
}

.case-highlight-icon {
  color: #22C55E;
  font-weight: 800;
}

.case-study-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-case-live {
  background: #E30613;
  color: white;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition);
  box-shadow: 0 4px 12px rgba(227, 6, 19, 0.4);
}

.btn-case-live:hover {
  background: #C50510;
  transform: translateY(-2px);
}

.btn-case-code {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all var(--transition);
}

.btn-case-code:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.case-mockup-wrapper {
  background: #111827;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-xl);
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #374151;
}

.mockup-dot:nth-child(1) { background: #EF4444; }
.mockup-dot:nth-child(2) { background: #F59E0B; }
.mockup-dot:nth-child(3) { background: #10B981; }

.mockup-inner {
  background: #030712;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  font-family: monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: #93C5FD;
}

/* ==========================================================================
   PROJECTS SECTION (GITHUB REPOS)
   ========================================================================== */

.projects-section {
  padding: 4rem 0;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--tc-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.section-heading {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--tc-dark);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-subheading {
  font-size: 1.05rem;
  color: var(--tc-slate);
}

/* Project Filter Tabs */
.project-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--tc-slate);
  background: var(--tc-surface);
  border: 1px solid var(--tc-border);
  transition: all var(--transition);
}

.tab-btn:hover {
  border-color: var(--tc-primary);
  color: var(--tc-primary);
}

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

/* Project Cards Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--tc-surface);
  border: 1px solid var(--tc-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: #CBD5E1;
  box-shadow: var(--shadow-lg);
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.project-category-badge {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: var(--tc-primary-light);
  color: var(--tc-primary);
  text-transform: uppercase;
}

.project-gh-icon {
  color: var(--tc-muted);
  transition: color var(--transition);
}

.project-card:hover .project-gh-icon {
  color: var(--tc-dark);
}

.project-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--tc-dark);
  margin-bottom: 0.65rem;
  line-height: 1.3;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--tc-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.project-tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
  margin-bottom: 1.5rem;
}

.tech-tag {
  font-size: 0.72rem;
  font-weight: 700;
  background: #F1F5F9;
  color: #475569;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

.project-links-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--tc-border);
  padding-top: 1rem;
}

.link-action {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--tc-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: gap var(--transition);
}

.link-action:hover {
  gap: 0.55rem;
  color: var(--tc-primary-hover);
}

/* ==========================================================================
   SERVICES & CAPABILITIES
   ========================================================================== */

.services-section {
  padding: 4rem 0;
  background: var(--tc-surface);
  border-top: 1px solid var(--tc-border);
  border-bottom: 1px solid var(--tc-border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.service-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--tc-border);
  background: var(--tc-bg);
  transition: all var(--transition);
}

.service-card:hover {
  background: white;
  border-color: var(--tc-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--tc-primary-light);
  color: var(--tc-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.service-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--tc-dark);
  margin-bottom: 0.65rem;
}

.service-desc {
  font-size: 0.9rem;
  color: var(--tc-slate);
  line-height: 1.6;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */

.contact-section {
  padding: 5rem 0;
}

.contact-box {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  border-radius: var(--radius-xl);
  padding: 4rem 3rem;
  color: white;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.contact-subtitle {
  font-size: 1.1rem;
  color: #CBD5E1;
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.contact-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  max-width: 540px;
  margin: 0 auto 2.5rem;
}

.contact-pill-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1rem;
  transition: all var(--transition);
}

.contact-pill-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.contact-pill-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: #94A3B8;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.contact-pill-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: white;
}

.btn-contact-main {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--tc-primary);
  color: white;
  font-size: 1rem;
  font-weight: 800;
  padding: 0.95rem 2rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
  transition: all var(--transition);
}

.btn-contact-main:hover {
  background: var(--tc-primary-hover);
  transform: translateY(-2px);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.main-footer {
  background: #0B1120;
  color: #94A3B8;
  border-top: 1px solid #1E293B;
  padding: 2.5rem 0;
  font-size: 0.85rem;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  font-weight: 800;
  color: white;
}

/* Toast */
.toast-notice {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--tc-dark);
  color: white;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 200;
  display: none;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-headline {
    font-size: 2.8rem;
  }
  .case-study-card {
    grid-template-columns: 1fr;
  }
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-headline {
    font-size: 2.2rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .contact-cards-grid {
    grid-template-columns: 1fr;
  }
  .case-study-card {
    padding: 1.75rem;
  }
  .case-study-title {
    font-size: 1.6rem;
  }
}