/* ========================================
   IT SolveLab - Professional Website Styles
   ======================================== */

/* === CSS VARIABLES === */
:root {
  --primary-color: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  --secondary-color: #0f172a;
  --text-dark: #1e293b;
  --text-light: #64748b;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --border-color: #e2e8f0;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;

  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

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

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

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

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

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  transition: var(--transition-fast);
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

/* === UTILITIES === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  margin-bottom: 0.5rem;
}

.section-title p {
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  text-align: center;
  transition: var(--transition-normal);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

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

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

.btn-white:hover {
  background-color: var(--bg-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

/* === HEADER & NAVIGATION === */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  min-height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.logo img {
  width: 50px;
  height: 50px;
}

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

.nav-link {
  color: var(--text-dark);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition-fast);
  pointer-events: none;
}

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

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

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 0.375rem;
  padding: 0.5rem;
}

.mobile-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--secondary-color);
  border-radius: 2px;
  transition: var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* === HERO SECTION === */
.hero {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(30, 64, 175, 0.05) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 150%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
}

.hero-text p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 500px;
}

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

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  border-radius: 1rem;
  box-shadow: var(--shadow-xl);
}

.hero-image::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  width: 100%;
  height: 100%;
  border: 3px solid var(--primary-color);
  border-radius: 1rem;
  z-index: -1;
  pointer-events: none;
}

/* === FEATURES/SERVICES === */
.features {
  background-color: var(--bg-white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background-color: var(--bg-white);
  padding: 2rem;
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  transform: scaleX(0);
  transition: var(--transition-normal);
  pointer-events: none;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.feature-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  transform-style: preserve-3d;
  position: relative;
}

.feature-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  background: inherit;
  border-radius: inherit;
  transform: translate(-50%, -50%) translateZ(-10px);
  opacity: 0.3;
  filter: blur(10px);
  pointer-events: none;
}

.feature-card h3 {
  margin-bottom: 1rem;
  color: var(--secondary-color);
}

.feature-card p {
  margin-bottom: 1.5rem;
}

.feature-card .btn {
  margin-top: auto;
}

/* === ABOUT SECTION === */
.about {
  background-color: var(--bg-light);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image img {
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
}

.about-text h2 {
  margin-bottom: 1.5rem;
}

.about-text p {
  margin-bottom: 1rem;
}

.about-highlights {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background-color: var(--bg-white);
  border-radius: 0.5rem;
  border-left: 4px solid var(--primary-color);
}

.highlight-icon {
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* === TEAM SECTION === */
.team {
  background-color: var(--bg-white);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.team-member {
  background-color: var(--bg-white);
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
  text-align: center;
}

.team-member:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.team-member-image {
  width: 100%;
  height: 300px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.team-member-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.team-member:hover .team-member-image img {
  transform: scale(1.05);
}

.team-member-info {
  padding: 1.5rem;
}

.team-member-info h3 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.team-member-role {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: block;
}

.team-member-info p {
  font-size: 0.9rem;
}

/* === BLOG SECTION === */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.blog-card {
  background-color: var(--bg-white);
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.blog-card-image {
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  position: relative;
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

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

.blog-card-content {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
  color: var(--text-light);
}

.blog-card-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.blog-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.blog-card h3 a:hover {
  color: var(--primary-color);
}

.blog-card p {
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.blog-card .btn {
  align-self: flex-start;
  padding: 0.625rem 1.5rem;
  font-size: 0.9rem;
}

/* === ARTICLE PAGE === */
.article-hero {
  padding: 3rem 0;
  background-color: var(--bg-light);
}

.article-header {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  color: var(--text-light);
}

.article-featured-image {
  max-width: 1200px;
  margin: 2rem auto;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.article-featured-image img {
  width: 100%;
  height: auto;
}

.article-content {
  max-width: 800px;
  margin: 3rem auto;
}

.article-content h2,
.article-content h3 {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.article-content p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
  font-size: 1.0625rem;
}

.article-content ul,
.article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.article-content li {
  list-style: disc;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.article-content ol li {
  list-style: decimal;
}

/* === CONTACT SECTION === */
.contact {
  background-color: var(--bg-light);
}

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

.contact-info h3 {
  margin-bottom: 1.5rem;
}

.contact-details {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-text h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.contact-detail-text p {
  margin: 0;
}

.contact-form {
  background-color: var(--bg-white);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: var(--shadow-md);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  transition: var(--transition-fast);
  font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.map-container {
  margin-top: 3rem;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 400px;
  background-color: var(--bg-light);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* === FOOTER === */
.footer {
  background-color: var(--secondary-color);
  color: white;
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-about h3 {
  color: white;
  margin-bottom: 1rem;
}

.footer-about p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.5rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer-logo img {
  width: 40px;
  height: 40px;
}

.footer-section h4 {
  color: white;
  margin-bottom: 1rem;
  font-size: 1.125rem;
}

.footer-links {
  display: grid;
  gap: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: white;
  padding-left: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
}

/* === COOKIE BANNER === */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--secondary-color);
  color: white;
  padding: 1.5rem;
  z-index: 9999;
  transform: translateY(100%);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-xl);
}

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

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.cookie-text p {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
}

.cookie-actions {
  display: flex;
  gap: 1rem;
  flex-shrink: 0;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  .section {
    padding: 3rem 0;
  }

  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    transform: translateX(-100%);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .mobile-toggle {
    display: flex;
  }

  .hero-content,
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-image::before {
    display: none;
  }

  .hero-text p {
    max-width: 100%;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .features-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }

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

  .cookie-content {
    flex-direction: column;
    text-align: center;
  }

  .hero {
    min-height: auto;
    padding: 3rem 0;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* === ANIMATIONS === */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* === ACCESSIBILITY === */
:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* === PRINT STYLES === */
@media print {
  .header,
  .footer,
  .cookie-banner,
  .btn {
    display: none;
  }

  body {
    font-size: 12pt;
  }

  a {
    text-decoration: underline;
  }
}