/* ==========================================================================
   TRIANZA OBRAS Y SERVICIOS S.L. - DESIGN SYSTEM (2026)
   Blueprint Light Theme
   Focus: Technical Rigor, Letter Essence, Direct Contact info@trianza.com
   ========================================================================== */

/* --- THEME VARIABLES (CLEAN ARCHITECTURAL BLUEPRINT - LIGHT) --- */
:root {
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --bg-main: #ffffff;
  --bg-surface: #f8fafc;
  --bg-card: #f1f5f9;
  --bg-card-hover: #e2e8f0;
  --bg-header: rgba(255, 255, 255, 0.98);

  --text-main: #0a3254;
  --text-muted: #475569;
  --text-highlight: #d97706;

  --accent-primary: #0a3254;
  --accent-primary-hover: #072138;
  --accent-secondary: #d97706;
  --accent-glow: rgba(217, 119, 6, 0.15);

  --border-color: #cbd5e1;
  --border-active: #0a3254;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 25px rgba(10, 50, 84, 0.08);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  --hero-pattern: linear-gradient(135deg, rgba(10,50,84,0.03) 25%, transparent 25%),
                      linear-gradient(225deg, rgba(10,50,84,0.03) 25%, transparent 25%),
                      linear-gradient(45deg, rgba(10,50,84,0.03) 25%, transparent 25%),
                      linear-gradient(315deg, rgba(10,50,84,0.03) 25%, #ffffff 25%);
}

/* --- BASE RESET --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

/* --- CONTAINER & LAYOUT UTILITIES --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
  position: relative;
}

.grid {
  display: grid;
  gap: 30px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 992px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 45px 0; }
  .container { padding: 0 16px; }
}

/* --- REVISED NAVBAR --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--bg-header);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

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

.nav-brand-text {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.4rem;
  letter-spacing: 2px;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-brand-text span {
  color: var(--accent-secondary);
}

.nav-brand-logo {
  height: 38px;
  width: 38px;
  object-fit: contain;
}

.nav-toggle-mobile {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 1.3rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.nav-toggle-mobile:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-secondary);
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  align-items: center;
  white-space: nowrap;
}

.nav-link {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-secondary);
  transition: width var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-secondary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-cta-email {
  background: var(--accent-primary);
  color: #ffffff !important;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.nav-cta-email:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-2px);
}

/* RESPONSIVE MOBILE NAVIGATION DRAWER */
@media (max-width: 992px) {
  .nav-toggle-mobile {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-header);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 2px solid var(--accent-primary);
    display: none;
    box-shadow: 0 15px 30px rgba(0,0,0,0.6);
    text-align: center;
  }

  .nav-links.mobile-active {
    display: flex;
    animation: fadeInDown 0.3s ease forwards;
  }

  .nav-cta-email {
    width: 100%;
    justify-content: center;
  }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- HERO SECTION --- */
.hero {
  position: relative;
  padding: 75px 0 60px;
  background: var(--hero-pattern);
  overflow: hidden;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 992px) {
  .hero-content { grid-template-columns: 1fr; gap: 30px; }
  .hero { padding: 36px 0 30px; }
  .hero-title { font-size: 2.1rem !important; line-height: 1.25 !important; }
  .hero-subtitle { font-size: 0.98rem !important; margin-bottom: 24px !important; }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(2, 132, 199, 0.15);
  border: 1px solid var(--border-active);
  color: var(--accent-secondary);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.1rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 22px;
  letter-spacing: -0.5px;
}

.hero-title span {
  color: var(--accent-secondary);
  background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-muted);
  margin-bottom: 34px;
  max-width: 640px;
  line-height: 1.7;
}

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

.btn-primary {
  background: var(--accent-primary);
  color: #ffffff;
  font-size: 1.02rem;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition-fast);
}

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

.hero-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-lg);
  position: relative;
  text-align: center;
}

.hero-img-container {
  width: 100%;
  height: 350px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

@media (max-width: 768px) {
  .hero-img-container { height: 230px; }
  .btn-primary { width: 100%; justify-content: center; }
}

.seal-badge-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-top: 14px;
}

.seal-img-icon {
  height: 60px;
  width: auto;
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.seal-text-info {
  text-align: left;
}

.seal-text-info h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
}

.seal-text-info p {
  color: var(--accent-secondary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
}

/* --- SECTION HEADERS --- */
.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 48px;
}

.section-tag {
  color: var(--accent-secondary);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
}

@media (max-width: 768px) {
  .section-title { font-size: 1.75rem; }
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.02rem;
}

/* --- ESSENCE CARDS --- */
.essence-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: var(--transition-normal);
}

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

.essence-icon {
  width: 54px;
  height: 54px;
  background: rgba(2, 132, 199, 0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-secondary);
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.essence-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.essence-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* --- SERVICES MATRIX --- */
.service-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

.service-num {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-secondary);
  letter-spacing: 2px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.service-title {
  font-family: var(--font-heading);
  font-size: 1.22rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  flex-grow: 1;
}

/* --- COLLABORATION MODEL SECTION --- */
.collab-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px;
}

@media (max-width: 768px) {
  .collab-box { padding: 22px; }
}

.collab-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
}

@media (max-width: 992px) {
  .collab-grid { grid-template-columns: 1fr; }
}

.collab-list {
  list-style: none;
  margin: 20px 0;
}

.collab-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.98rem;
}

.collab-list i {
  color: var(--accent-secondary);
  font-size: 1.1rem;
  margin-top: 4px;
}

/* --- CONTACT EMAIL DIRECT CARD --- */
.contact-direct-card {
  background: var(--bg-surface);
  border: 2px stroke var(--border-active);
  border-radius: var(--radius-lg);
  padding: 36px 20px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.email-highlight-box {
  background: var(--bg-main);
  border: 2px dashed var(--accent-primary);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin: 20px 0;
  max-width: 100%;
}

.email-address-text {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--accent-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  word-break: break-all;
}

@media (max-width: 576px) {
  .email-address-text { font-size: 1.25rem; }
}

.email-address-text:hover {
  color: var(--text-main);
}

.company-meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
}

@media (max-width: 768px) {
  .company-meta-grid { grid-template-columns: 1fr; }
}

.meta-item {
  text-align: center;
}

.meta-item i {
  font-size: 1.4rem;
  color: var(--accent-secondary);
  margin-bottom: 6px;
}

.meta-item h5 {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.meta-item p {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

/* --- FOOTER --- */
.footer {
  background: #030712;
  border-top: 1px solid var(--border-color);
  padding: 45px 0 20px;
  color: #94a3b8;
  font-size: 0.88rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 32px;
}

@media (max-width: 992px) {
  .footer-inner { grid-template-columns: 1fr; }
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* --- BLUEPRINT CARD ACCENTS --- */
.service-card,
.essence-card {
  border: 2px solid #cbd5e1;
  border-top: 5px solid #0a3254;
}

/* --- FOOTER LEGAL LINKS --- */
.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
}

.footer-legal-links a {
  color: inherit;
  text-decoration: none;
}

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

/* --- LEGAL CONTENT PAGES (AVISO LEGAL / PRIVACIDAD / COOKIES) --- */
.legal-content {
  max-width: 860px;
  margin: 0 auto;
}

.legal-content h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 34px 0 12px;
}

.legal-content h2:first-of-type {
  margin-top: 0;
}

.legal-content p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

.legal-content ul {
  margin: 0 0 14px 22px;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

.legal-content li {
  margin-bottom: 6px;
}

.legal-content strong {
  color: var(--text-main);
}

.legal-content a {
  color: var(--accent-secondary);
  font-weight: 600;
  text-decoration: none;
}

.legal-content a:hover {
  text-decoration: underline;
}