/* ============================================
   RoyalTech Iberia - Main Stylesheet
   Premium Consulting Website
   ============================================ */

/* CSS Variables */
:root {
  --navy: #0A192F;
  --navy-light: #112240;
  --navy-dark: #0B1120;
  --steel: #4682B4;
  --steel-light: #5A9BC9;
  --teal: #00CED1;
  --white: #FFFFFF;
  --slate-50: #F8FAFC;
  --slate-100: #F1F5F9;
  --slate-200: #E2E8F0;
  --slate-300: #CBD5E1;
  --slate-400: #94A3B8;
  --slate-500: #64748B;
  --slate-600: #475569;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1200px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--navy);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.2;
}

.heading-xl {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: -0.02em;
}

.heading-lg {
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.01em;
}

.heading-md {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

.heading-sm {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
}

.text-lg {
  font-size: 1.125rem;
}

.text-sm {
  font-size: 0.875rem;
}

.text-xs {
  font-size: 0.75rem;
}

.label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--steel);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 3rem;
  }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--slate-100);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo img {
  height: 40px;
  width: auto;
}

@media (min-width: 768px) {
  .logo img {
    height: 48px;
  }
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Language Selector */
.lang-selector {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
}

.lang-selector a {
  padding: 0.25rem 0.5rem;
  color: var(--slate-400);
  transition: var(--transition);
}

.lang-selector a:hover,
.lang-selector a.active {
  color: var(--navy);
  font-weight: 600;
}

.lang-separator {
  color: var(--slate-300);
}

/* Menu Button */
.menu-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--navy);
  transition: var(--transition);
}

.menu-btn:hover {
  color: var(--steel);
}

.menu-btn svg {
  width: 24px;
  height: 24px;
  stroke-width: 1.5;
}

/* Mobile Menu Overlay */
.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.menu-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--navy);
}

@media (min-width: 768px) {
  .menu-close {
    top: 2rem;
    right: 3rem;
  }
}

.menu-close svg {
  width: 28px;
  height: 28px;
  stroke-width: 1.5;
}

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

.menu-nav a {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--navy);
  transition: var(--transition);
  position: relative;
}

@media (min-width: 768px) {
  .menu-nav a {
    font-size: 3rem;
  }
}

.menu-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.3s ease;
}

.menu-nav a:hover {
  color: var(--steel);
}

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

.menu-contact {
  margin-top: 3rem;
  text-align: center;
  color: var(--slate-500);
  font-size: 0.875rem;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-slides {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: heroZoom 7s ease-out forwards;
}

@keyframes heroZoom {
  from { transform: scale(1); }
  to { transform: scale(1.05); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(to right,
      rgba(10,25,47,0.4) 0%,
      rgba(10,25,47,0.65) 30%,
      rgba(10,25,47,0.7) 50%,
      rgba(10,25,47,0.65) 70%,
      rgba(10,25,47,0.4) 100%
    ),
    linear-gradient(to bottom,
      rgba(10,25,47,0.3) 0%,
      rgba(10,25,47,0.5) 40%,
      rgba(10,25,47,0.5) 60%,
      rgba(10,25,47,0.4) 100%
    );
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 2rem 1.5rem;
  max-width: 900px;
}

.hero-title {
  color: var(--white);
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-description {
  margin-top: 2rem;
  color: var(--slate-200);
  font-size: 1rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .hero-description {
    font-size: 1.125rem;
  }
}

.hero-cta {
  margin-top: 3rem;
}

.hero-indicators {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 0.5rem;
}

.hero-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.hero-indicator.active {
  width: 32px;
  border-radius: 4px;
  background: var(--white);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 2.5rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--white);
  color: var(--navy);
}

.btn-primary:hover {
  background: var(--teal);
}

.btn-dark {
  background: var(--navy);
  color: var(--white);
}

.btn-dark:hover {
  background: var(--navy-light);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Sections */
.section {
  padding: 6rem 0;
}

@media (min-width: 768px) {
  .section {
    padding: 8rem 0;
  }
}

.section-dark {
  background: var(--navy-dark);
  color: var(--white);
}

.section-gray {
  background: var(--slate-50);
}

.section-header {
  margin-bottom: 3rem;
}

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

.section-title {
  color: var(--navy);
  margin-top: 0.5rem;
}

.section-dark .section-title {
  color: var(--white);
}

.section-description {
  margin-top: 1.5rem;
  color: var(--slate-600);
  max-width: 700px;
}

.section-dark .section-description {
  color: var(--slate-400);
}

.section-header.center .section-description {
  margin-left: auto;
  margin-right: auto;
}

/* Grid */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-12 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-12 {
    grid-template-columns: repeat(12, 1fr);
    gap: 3rem;
  }
}

.col-5 { grid-column: span 5; }
.col-7 { grid-column: span 7; }

@media (max-width: 767px) {
  .col-5, .col-7 {
    grid-column: span 1;
  }
}

/* Cards */
.card {
  background: var(--white);
  border: 1px solid var(--slate-100);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .card {
    padding: 2.5rem;
  }
}

.card:hover {
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}

.card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--teal);
  transition: width 0.5s ease;
}

.card:hover::after {
  width: 100%;
}

.card-icon {
  width: 32px;
  height: 32px;
  color: var(--steel);
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.card:hover .card-icon {
  color: var(--teal);
}

.card-title {
  color: var(--navy);
  margin-bottom: 1rem;
}

.card-text {
  color: var(--slate-600);
}

/* Partner Cards */
.partner-card {
  text-align: center;
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(10,25,47,0.5);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.partner-card:hover {
  border-color: rgba(70,130,180,0.5);
}

.partner-name {
  color: var(--white);
  margin-bottom: 1rem;
}

.partner-text {
  color: var(--slate-400);
  font-size: 0.875rem;
}

/* Services List */
.service-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--slate-200);
  transition: var(--transition);
}

@media (min-width: 768px) {
  .service-item {
    grid-template-columns: auto 1fr 2fr;
    gap: 2rem;
    align-items: start;
  }
}

.service-item:hover {
  background: var(--slate-50);
  margin: 0 -1rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

.service-number {
  font-size: 0.75rem;
  color: var(--slate-400);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.service-number svg {
  width: 24px;
  height: 24px;
  color: var(--steel);
  transition: var(--transition);
}

.service-item:hover .service-number svg {
  color: var(--teal);
}

.service-title {
  color: var(--navy);
  transition: var(--transition);
}

.service-item:hover .service-title {
  color: var(--steel);
}

.service-text {
  color: var(--slate-600);
}

/* SISnet Section */
.sisnet-image {
  overflow: hidden;
  border-radius: 2px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.sisnet-image img {
  transition: transform 0.5s ease;
}

.sisnet-image:hover img {
  transform: scale(1.03);
}

/* Contact Section */
.contact-info {
  margin-top: 3rem;
}

.contact-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--slate-500);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.contact-value {
  color: var(--navy);
  transition: var(--transition);
}

.contact-value:hover {
  color: var(--steel);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .form-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--slate-300);
  padding: 1rem 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--navy);
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--navy);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--slate-400);
}

.form-textarea {
  resize: none;
  min-height: 80px;
}

.form-select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
  padding-right: 2rem;
}

.form-section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--slate-500);
  font-weight: 600;
  padding-top: 1.5rem;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
  border-top: 1px solid var(--slate-200);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  color: var(--slate-500);
  margin-bottom: 0.5rem;
}

.form-message {
  padding: 1rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.form-message.success {
  background: #D1FAE5;
  color: #065F46;
}

.form-message.error {
  background: #FEE2E2;
  color: #991B1B;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
}

/* Footer */
.footer {
  background: var(--white);
  border-top: 1px solid var(--slate-100);
  padding: 4rem 0;
}

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

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-logo img {
  height: 40px;
  width: auto;
  margin-bottom: 1.5rem;
}

.footer-company {
  color: var(--slate-500);
  font-size: 0.875rem;
}

.footer-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--slate-500);
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-link {
  color: var(--slate-600);
  font-size: 0.875rem;
  transition: var(--transition);
  display: block;
  margin-bottom: 0.5rem;
}

.footer-link:hover {
  color: var(--navy);
}

.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--slate-100);
  text-align: center;
}

.footer-copy {
  color: var(--slate-400);
  font-size: 0.75rem;
}

/* Legal Page */
.legal-page {
  padding-top: 8rem;
  padding-bottom: 4rem;
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--steel);
  font-size: 0.875rem;
  margin-bottom: 2rem;
  transition: var(--transition);
}

.legal-back:hover {
  color: var(--navy);
}

.legal-back svg {
  width: 16px;
  height: 16px;
}

.legal-title {
  margin-bottom: 2rem;
}

.legal-toc {
  background: var(--slate-50);
  border: 1px solid var(--slate-100);
  padding: 1.5rem;
  margin-bottom: 3rem;
}

.legal-toc-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--slate-500);
  font-weight: 600;
  margin-bottom: 1rem;
}

.legal-toc-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.legal-toc-link {
  color: var(--steel);
  transition: var(--transition);
}

.legal-toc-link:hover {
  color: var(--navy);
  text-decoration: underline;
}

.legal-section {
  margin-bottom: 4rem;
  scroll-margin-top: 8rem;
}

.legal-section-title {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--slate-200);
  margin-bottom: 1.5rem;
}

.legal-content p {
  margin-bottom: 1rem;
  color: var(--slate-600);
}

.legal-content h3 {
  color: var(--navy);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.legal-content ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-content li {
  color: var(--slate-600);
  margin-bottom: 0.5rem;
}

.legal-content strong {
  color: var(--navy);
  font-weight: 600;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 150;
  background: var(--white);
  border-top: 1px solid var(--slate-200);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
  padding: 1rem;
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

.cookie-banner.active {
  transform: translateY(0);
}

.cookie-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

@media (min-width: 768px) {
  .cookie-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.cookie-text {
  font-size: 0.875rem;
  color: var(--slate-600);
}

.cookie-link {
  color: var(--steel);
  text-decoration: underline;
  white-space: nowrap;
}

.cookie-link:hover {
  color: var(--navy);
}

.cookie-buttons {
  display: flex;
  gap: 0.75rem;
}

.cookie-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.cookie-btn-accept {
  background: var(--navy);
  color: var(--white);
}

.cookie-btn-accept:hover {
  background: var(--navy-light);
}

.cookie-btn-decline {
  background: transparent;
  color: var(--slate-500);
}

.cookie-btn-decline:hover {
  color: var(--navy);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Utilities */
.text-center { text-align: center; }
.text-white { color: var(--white); }
.text-slate { color: var(--slate-600); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* Selection */
::selection {
  background: rgba(70,130,180,0.3);
  color: var(--navy);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--slate-50);
}

::-webkit-scrollbar-thumb {
  background: var(--slate-300);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--slate-400);
}