/*
Theme Name: DSI Comunicación Child
Theme URI: https://dsi.com.mx
Template: hello-elementor
Author: Ing. Yakin Dario
Author URI: https://dsi.com.mx
Description: Child theme de Hello Elementor para DSI Comunicación - Landing Page Mobile-First de alto rendimiento
Version: 1.1.2
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: dsi-child
*/

/* ========================================
   VARIABLES CSS - Colores Corporativos DSI
   ======================================== */
:root {
  /* Colores Principales */
  --dsi-primary: #0066cc;
  --dsi-primary-dark: #004999;
  --dsi-primary-light: #3385d6;

  /* Colores Secundarios */
  --dsi-secondary: #00a8e8;
  --dsi-accent: #ff6b35;

  /* Escala de Grises */
  --dsi-dark: #0f172a;
  /* Darker blue-ish gray */
  --dsi-gray-dark: #334155;
  --dsi-gray: #64748b;
  --dsi-gray-light: #94a3b8;
  --dsi-gray-lighter: #f1f5f9;
  --dsi-light: #f8fafc;
  --dsi-white: #ffffff;

  /* Tipografía */
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Espaciados (Mobile-First) */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 5rem;

  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  color: var(--dsi-gray-dark);
  background-color: var(--dsi-white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========================================
   TIPOGRAFÍA FLUIDA
   ======================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--dsi-dark);
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw + 0.5rem, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw + 0.5rem, 1.5rem);
}

h4 {
  font-size: clamp(1.125rem, 2vw + 0.5rem, 1.25rem);
}

p {
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

strong {
  font-weight: 700;
}

a {
  color: var(--dsi-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

/* ========================================
   UTILIDADES GENERALES
   ======================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

/* Responsive: breakpoint overrides en css/responsive.css */

.section-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--dsi-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.section-subtitle {
  max-width: 700px;
  color: var(--dsi-gray);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
}

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

.mb-5 {
  margin-bottom: 3rem;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--dsi-primary);
  color: var(--dsi-white);
  border: 1px solid var(--dsi-primary);
  box-shadow: 0 4px 6px -1px rgba(0, 102, 204, 0.3);
}

.btn-primary:hover {
  background-color: var(--dsi-primary-dark);
  border-color: var(--dsi-primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--dsi-gray-dark);
  border: 1px solid var(--dsi-gray-light);
}

.btn-secondary:hover,
.btn-secondary.active {
  background-color: var(--dsi-dark);
  color: var(--dsi-white);
  border-color: var(--dsi-dark);
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.15);
  color: var(--dsi-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-block {
  width: 100%;
}

/* ========================================
   HEADER & NAVEGACIÓN
   ======================================== */
.site-header,
.site-header:not(.dynamic-header) {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0;
  background: var(--dsi-white);
  width: 100%;
  max-width: 100% !important;
  margin-left: 0;
  margin-right: 0;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  background: var(--dsi-white);
  padding: 0 3rem;
  padding-bottom: 1rem;
  max-width: 100%;
  margin: 0 auto;
  border-bottom: 1px solid #e2e8f0;
}

/* Ajuste para que el sticky no se pegue al borde superior inmediatamente al hacer scroll,
   o para dar ese efecto flotante constante */
body {
  background-color: #f8fafc;
  /* Asegurar fondo gris claro para contraste */
}

.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  min-width: 150px;
}

.site-logo img {
  height: 40px;
  width: auto;
  display: block;
}

.main-navigation {
  flex-grow: 0;
}

.main-navigation ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
  margin: 0;
  padding: 0;
}

.main-navigation li {
  margin: 0;
  white-space: nowrap;
}

.main-navigation a {
  color: var(--dsi-gray-dark);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
  padding: 0.5rem 1rem;
  display: inline-block;
}

.main-navigation a:not(.btn):hover {
  color: var(--dsi-primary);
}

/* Botón CTA en navegación */
.main-navigation .btn-primary {
  background: var(--dsi-primary);
  color: white;
  border-radius: var(--radius-sm);
  padding: 0.625rem 1.5rem;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.2);
}

.main-navigation .btn-primary:hover {
  background: var(--dsi-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
  color: white;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  background: none;
  border: none;
  width: 32px;
  height: 32px;
  padding: 4px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--dsi-dark);
  transition: all 0.3s;
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-navigation-container {
  display: none;
  position: fixed;
  top: 90px;
  left: 0;
  right: 0;
  background: white;
  border-radius: 0 0 1rem 1rem;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
  z-index: 999;
  max-width: 1200px;
  margin: 0 auto;
}

.mobile-navigation-container.active {
  display: block;
}

.mobile-navigation ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-navigation li {
  margin-bottom: 1rem;
}

.mobile-navigation a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--dsi-dark);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.mobile-navigation a:hover {
  background: var(--dsi-gray-lighter);
  color: var(--dsi-primary);
}

.mobile-navigation .btn-primary {
  background: var(--dsi-primary);
  color: white;
  text-align: center;
}

.mobile-navigation .btn-primary:hover {
  background: var(--dsi-primary-dark);
  color: white;
}

@media (max-width: 1023px) {
  .hide-mobile,
  .main-navigation.hide-mobile,
  nav.main-navigation {
    display: none !important;
  }

  .menu-toggle {
    display: flex !important;
  }

  .mobile-navigation li {
    margin-bottom: 1rem;
    text-align: center;
  }

  .mobile-navigation a {
    display: block;
    padding: 0.5rem;
    color: var(--dsi-dark);
    font-weight: 600;
  }
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero-section {
  position: relative;
  padding: 0.5rem 0;
  background: transparent;
}

.hero-section .container {
  position: relative;
  background-color: var(--dsi-dark);
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.7)), url('assets/images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  border-radius: 0.5rem;
  overflow: hidden;
  padding: 6rem 4rem;
  min-height: 600px;
  display: flex;
  align-items: center;
  max-width: 1600px;
  margin: 0 auto;
}

.hero-content {
  max-width: 700px;
  color: white;
  position: relative;
  z-index: 2;
}

.hero-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  padding: 0.4rem 0.8rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  border-radius: 4px;
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.95);
}

.hero-title {
  color: white;
  margin-bottom: 1.5rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  max-width: 600px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero responsive: breakpoint overrides en css/responsive.css */

/* ========================================
   CLIENTS SECTION
   ======================================== */
.clients-section {
  padding: 2rem 0;
  background: var(--dsi-light);
  border-bottom: 1px solid var(--dsi-gray-lighter);
}

.clients-title {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--dsi-gray-light);
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.clients-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 3rem;
  color: var(--dsi-gray);
  font-weight: 700;
  font-size: 1.25rem;
  opacity: 0.6;
}

/* ========================================
   ABOUT SECTION
   ======================================== */
.about-section {
  position: relative;
  overflow: hidden;
}

.about-grid {
  display: grid;
  gap: 4rem;
}

/* About grid: breakpoint overrides en css/responsive.css */

.about-text {
  position: relative;
}

.about-description {
  color: var(--dsi-gray);
  margin-bottom: 2rem;
}

.about-location {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--dsi-primary);
  background: rgba(0, 102, 204, 0.1);
  padding: 0.5rem 1rem;
  border-radius: 50px;
}

.about-image .image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: visible;
}

.about-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.floating-card {
  position: absolute;
  bottom: -2rem;
  left: -2rem;
  background: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 10;
}

/* Floating card: breakpoint overrides en css/responsive.css */

.icon-check {
  width: 2rem;
  height: 2rem;
  background: #10b981;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
}

/* ========================================
   SERVICES SECTION
   ======================================== */
.services-section {
  background-color: var(--dsi-light);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

/* Services grid: breakpoint overrides en css/responsive.css */

.service-card {
  background: white;
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: all 0.3s ease;
  height: 100%;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 102, 204, 0.1);
}

.service-icon-box {
  width: 4rem;
  height: 4rem;
  background: var(--dsi-gray-lighter);
  color: var(--dsi-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s;
}

.service-card:hover .service-icon-box {
  background: var(--dsi-primary);
  color: white;
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.service-description {
  color: var(--dsi-gray);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ========================================
   PORTFOLIO SECTION
   ======================================== */
.portfolio-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 2rem;
}

.portfolio-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

/* Portfolio grid: breakpoint overrides en css/responsive.css */

.portfolio-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.3s;
  height: 100%;
}

.portfolio-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.portfolio-image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

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

.portfolio-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: white;
  color: var(--dsi-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  z-index: 2;
  box-shadow: var(--shadow-sm);
}

.portfolio-content {
  padding: 1.5rem;
}

.portfolio-content h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.portfolio-content p {
  font-size: 0.9rem;
  color: var(--dsi-gray);
  margin-bottom: 1.5rem;
}

.portfolio-link {
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

/* ========================================
   FEATURES BAR
   ======================================== */
.features-bar {
  background: var(--dsi-primary);
  color: white;
  padding: 4rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

/* Features grid: breakpoint overrides en css/responsive.css */

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

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: rgba(255, 255, 255, 0.2);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.feature-item h3 {
  color: white;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.feature-item p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ========================================
   INSIGHTS SECTION
   ======================================== */
.insights-section {
  background: var(--dsi-light);
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.view-all-link {
  font-weight: 600;
}

.insights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

/* Insights grid: breakpoint overrides en css/responsive.css */

.insight-card {
  background: transparent;
}

.insight-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1rem;
  aspect-ratio: 16/9;
}

.insight-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

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

.insight-meta {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--dsi-gray-light);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.5rem;
}

.insight-content h3 {
  font-size: 1.125rem;
  margin-bottom: 0;
  line-height: 1.4;
}

/* ========================================
   CONTACT SPLIT SECTION
   ======================================== */
.contact-split-section {
  background: white;
}

.contact-card-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

/* Contact card: breakpoint overrides en css/responsive.css */

.contact-form-side {
  padding: 3rem;
  background: white;
}

.contact-info-side {
  background: var(--dsi-dark);
  color: white;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.form-row {
  display: grid;
  gap: 1.5rem;
}

/* Form row: breakpoint overrides en css/responsive.css */

.form-group {
  margin-bottom: 1.5rem;
}

.contact-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--dsi-gray-lighter);
  border-radius: var(--radius-sm);
  background: var(--dsi-light);
  color: var(--dsi-dark);
}

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
  font-family: inherit;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--dsi-primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* Validation error states */
.contact-form input.error,
.contact-form select.error,
.contact-form textarea.error {
  border-color: #dc3545;
  background: #fff5f5;
}

.contact-form input.error:focus,
.contact-form select.error:focus,
.contact-form textarea.error:focus {
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.field-error {
  color: #dc3545;
  font-size: 0.8rem;
  margin-top: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  animation: fadeIn 0.2s ease;
}

/* Submit button states */
.contact-form .btn-block {
  width: 100%;
  margin-top: 0.5rem;
}

.contact-form button[type="submit"]:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
}

.contact-form button[type="submit"].is-loading {
  position: relative;
  color: transparent;
}

.contact-form button[type="submit"].is-loading::after {
  content: 'Enviando...';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
}

/* Form status messages */
.form-status {
  margin-top: 1rem;
  padding: 0;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow: hidden;
  transition: all 0.3s ease;
}

.form-status.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
  padding: 0.85rem 1rem;
  animation: slideDown 0.3s ease;
}

.form-status.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
  padding: 0.85rem 1rem;
  animation: slideDown 0.3s ease;
}

.form-status-icon {
  font-size: 1.2rem;
  display: flex;
  flex-shrink: 0;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.info-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.info-icon {
  font-size: 1.5rem;
}

.info-item strong {
  display: block;
  margin-bottom: 0.25rem;
}

.info-item p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ========================================
   FOOTER SIMPLE
   ======================================== */
.site-footer-simple {
  padding: 2rem 0;
  background: white;
  border-top: 1px solid var(--dsi-gray-lighter);
  font-size: 0.9rem;
}

.footer-flex {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}

/* Footer flex: breakpoint overrides en css/responsive.css */

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: var(--dsi-gray);
  font-weight: 500;
}

.footer-copyright {
  color: var(--dsi-gray-light);
}

/* ========================================
   ANIMACIONES
   ======================================== */
.fade-in-up {
  animation: fadeInUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   404 ERROR PAGE
   ======================================== */
.error-404-page {
  background: var(--dsi-light);
}

.error-404-main {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) 0;
}

.error-404-container {
  position: relative;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  text-align: center;
  overflow: hidden;
}

/* Background animated grid lines */
.error-404-bg-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.06;
}

.grid-line {
  position: absolute;
  background: var(--dsi-primary);
}

.grid-line-1 {
  width: 1px;
  height: 100%;
  left: 20%;
  animation: gridPulse 4s ease-in-out infinite;
}

.grid-line-2 {
  width: 1px;
  height: 100%;
  right: 20%;
  animation: gridPulse 4s ease-in-out infinite 1s;
}

.grid-line-3 {
  width: 100%;
  height: 1px;
  top: 30%;
  animation: gridPulse 4s ease-in-out infinite 0.5s;
}

.grid-line-4 {
  width: 100%;
  height: 1px;
  bottom: 30%;
  animation: gridPulse 4s ease-in-out infinite 1.5s;
}

@keyframes gridPulse {

  0%,
  100% {
    opacity: 0.3;
  }

  50% {
    opacity: 1;
  }
}

/* Floating tech icons */
.error-floating-icons {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.floating-icon {
  position: absolute;
  font-size: 2rem;
  color: var(--dsi-primary);
  opacity: 0.08;
}

.icon-1 {
  top: 5%;
  left: 10%;
  animation: floatIcon 6s ease-in-out infinite;
}

.icon-2 {
  top: 15%;
  right: 8%;
  animation: floatIcon 7s ease-in-out infinite 1s;
}

.icon-3 {
  bottom: 20%;
  left: 15%;
  animation: floatIcon 5s ease-in-out infinite 0.5s;
}

.icon-4 {
  bottom: 10%;
  right: 12%;
  animation: floatIcon 8s ease-in-out infinite 2s;
}

@keyframes floatIcon {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  25% {
    transform: translateY(-15px) rotate(5deg);
  }

  75% {
    transform: translateY(10px) rotate(-3deg);
  }
}

/* Main 404 content */
.error-404-content {
  position: relative;
  z-index: 2;
  animation: fadeInUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Glitch-style 404 number */
.error-404-glitch {
  font-family: var(--font-heading);
  font-size: clamp(7rem, 18vw, 12rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--dsi-primary) 0%, var(--dsi-secondary) 50%, var(--dsi-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  margin-bottom: 0.5rem;
  animation: glitchShift 4s ease-in-out infinite;
}

.error-404-glitch::before,
.error-404-glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--dsi-primary) 0%, var(--dsi-secondary) 50%, var(--dsi-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.error-404-glitch::before {
  animation: glitch-1 3s infinite linear alternate-reverse;
  clip-path: polygon(0 0, 100% 0, 100% 35%, 0 35%);
}

.error-404-glitch::after {
  animation: glitch-2 3s infinite linear alternate-reverse;
  clip-path: polygon(0 65%, 100% 65%, 100% 100%, 0 100%);
}

@keyframes glitch-1 {

  0%,
  90%,
  100% {
    transform: translate(0);
  }

  92% {
    transform: translate(3px, -2px);
  }

  94% {
    transform: translate(-3px, 1px);
  }

  96% {
    transform: translate(2px, 2px);
  }

  98% {
    transform: translate(-1px, -1px);
  }
}

@keyframes glitch-2 {

  0%,
  90%,
  100% {
    transform: translate(0);
  }

  91% {
    transform: translate(-2px, 1px);
  }

  93% {
    transform: translate(2px, -2px);
  }

  95% {
    transform: translate(-1px, 2px);
  }

  97% {
    transform: translate(3px, -1px);
  }
}

@keyframes glitchShift {

  0%,
  100% {
    filter: hue-rotate(0deg);
  }

  50% {
    filter: hue-rotate(10deg);
  }
}

/* Divider line */
.error-404-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--dsi-primary), var(--dsi-secondary));
  border-radius: 2px;
  margin: 1.5rem auto;
}

.error-404-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--dsi-dark);
  margin-bottom: var(--spacing-sm);
  font-weight: 800;
}

.error-404-description {
  color: var(--dsi-gray);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.7;
}

/* Action buttons */
.error-404-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

.error-404-actions .btn {
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
}

.error-404-actions .btn-primary {
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.error-404-actions .btn-primary:hover {
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
  transform: translateY(-2px);
}

.error-404-actions .btn-secondary:hover {
  transform: translateY(-2px);
}

/* Quick links section */
.error-404-links {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding-top: var(--spacing-lg);
}

.error-404-links-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--dsi-gray-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.error-404-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  max-width: 400px;
  margin: 0 auto;
}

/* Error 404 links: breakpoint overrides en css/responsive.css */

.error-quick-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0.75rem;
  border-radius: var(--radius-md);
  background: white;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  transition: all var(--transition-normal);
  color: var(--dsi-gray-dark);
  text-decoration: none;
}

.error-quick-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 102, 204, 0.15);
  color: var(--dsi-primary);
}

.error-quick-link i {
  font-size: 1.5rem;
  color: var(--dsi-primary);
  transition: transform var(--transition-normal);
}

.error-quick-link:hover i {
  transform: scale(1.15);
}

.error-quick-link span {
  font-size: 0.8rem;
  font-weight: 600;
}