/* 
   TechToByte - Global Stylesheet
   Designed for premium IT Consulting & Web Design brand.
*/

/* Google Fonts loaded via HTML link tags for performance and anti-flicker */

:root {
  --bg-primary: #080c14;
  --bg-secondary: #0f1626;
  --bg-tertiary: #17223b;
  --color-primary: #00d2ff;
  --color-secondary: #00f0ff;
  --color-accent: #3a86ff;
  --color-text-main: #f8f9fa;
  --color-text-muted: #a0aec0;
  --color-text-dark: #1a202c;
  --gradient-tech: linear-gradient(135deg, #0072ff 0%, #00f0ff 100%);
  --gradient-dark: linear-gradient(180deg, #0f1626 0%, #080c14 100%);
  --card-border: 1px solid rgba(0, 210, 255, 0.15);
  --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(15, 22, 38, 0.7);
  --glass-border: 1px solid rgba(255, 255, 255, 0.05);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: 'Outfit', sans-serif;
  --max-width: 1200px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-family);
  scroll-behavior: smooth;
}

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

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

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

/* Header & Navigation */
#header-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  /* GPU katmanı oluştur — mobilde titreme engellensin */
  will-change: transform;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}


#header {
  background-color: rgba(8, 12, 20, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: var(--glass-border);
  padding: 15px 0;
  transition: var(--transition-smooth);
}

#header.scrolled {
  padding: 10px 0;
  background-color: rgba(8, 12, 20, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container a {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-container img {
  height: 60px;
  display: block;
  transition: var(--transition-smooth);
}

#header.scrolled .logo-container img {
  height: 48px;
}

.logo-text {
  font-size: 2.05rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--color-text-main);
  transition: var(--transition-smooth);
  background: linear-gradient(135deg, #ffffff 50%, #b0c4de 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text-alt {
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

#header.scrolled .logo-text {
  font-size: 1.7rem;
}




.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  padding: 8px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-tech);
  transition: var(--transition-smooth);
}

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

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

.nav-links li.active a {
  color: var(--color-primary);
}

.nav-links li.active a::after {
  width: 100%;
}

/* Dropdown Menu */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--bg-secondary);
  border: var(--glass-border);
  border-top: 3px solid var(--color-primary);
  border-radius: 4px;
  width: 220px;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition-smooth);
  box-shadow: var(--card-shadow);
  z-index: 100;
}

.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li {
  width: 100%;
}

.dropdown a {
  display: block;
  padding: 12px 20px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.dropdown a::after {
  display: none;
}

.dropdown a:hover {
  color: var(--color-text-main);
  background-color: var(--bg-tertiary);
  padding-left: 25px;
}

.cta-btn {
  background: var(--gradient-tech);
  color: #fff;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 240, 255, 0.5);
  color: #fff;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 180px 0 100px;
  background: linear-gradient(135deg, rgba(8, 12, 20, 0.9) 0%, rgba(15, 22, 38, 0.8) 100%), 
              url('assets/hero-bg.jpg') no-repeat center center/cover;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 80% 20%, rgba(0, 240, 255, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-content h1 span {
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-bottom: 35px;
}

.hero-buttons {
  display: flex;
  gap: 20px;
}

.btn-secondary {
  border: 2px solid var(--color-primary);
  color: var(--color-text-main);
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
}

.btn-secondary:hover {
  background-color: rgba(0, 210, 255, 0.1);
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.2);
}

.hero-graphic {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-graphic img {
  border-radius: 12px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  border: var(--glass-border);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

/* Sections General */
.section {
  padding: 100px 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-secondary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-header .tag {
  color: var(--color-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.85rem;
  display: inline-block;
  margin-bottom: 10px;
  border: 1px solid rgba(0, 210, 255, 0.3);
  padding: 4px 12px;
  border-radius: 20px;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.section-header p {
  color: var(--color-text-muted);
}

/* Cards & Grid Systems */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

/* Service Card */
.service-card {
  background-color: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: 12px;
  padding: 40px 30px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-tech);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 210, 255, 0.3);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 210, 255, 0.1);
}

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

.service-icon {
  width: 60px;
  height: 60px;
  background: rgba(0, 210, 255, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
  color: var(--color-primary);
  font-size: 1.8rem;
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
  background: var(--gradient-tech);
  color: #fff;
  transform: rotate(5deg) scale(1.1);
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 15px;
  font-weight: 600;
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.learn-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.learn-more span {
  transition: var(--transition-smooth);
}

.service-card:hover .learn-more span {
  transform: translateX(5px);
}

/* Feature/Why Us Section */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.feature-item {
  display: flex;
  gap: 15px;
}

.feature-item-icon {
  flex-shrink: 0;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background-color: rgba(0, 240, 255, 0.1);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

.feature-item h4 {
  font-size: 1.15rem;
  margin-bottom: 5px;
}

.feature-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Counter Section */
.counter-section {
  background: var(--gradient-tech);
  padding: 60px 0;
  text-align: center;
}

.counter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.counter-item h3 {
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 5px;
}

.counter-item p {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.9rem;
}

/* Partners Logos */
.partners-section {
  padding: 60px 0;
  border-top: var(--glass-border);
  border-bottom: var(--glass-border);
}

.partners-slider {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  opacity: 0.6;
}

.partner-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.partner-logo span {
  color: var(--color-primary);
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, rgba(8, 12, 20, 0.95) 0%, rgba(23, 34, 59, 0.95) 100%), url('assets/hero-bg.jpg') no-repeat center center/cover;
  padding: 80px 0;
  border-radius: 16px;
  border: var(--card-border);
  text-align: center;
  box-shadow: var(--card-shadow);
}

.cta-banner h2 {
  font-size: 2.2rem;
  margin-bottom: 15px;
}

.cta-banner p {
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 30px;
}

/* About / Corporate Page elements */
.page-title {
  padding: 130px 0 45px;
  background-color: var(--bg-secondary);
  border-bottom: var(--glass-border);
  text-align: center;
}

.page-title h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.page-title .breadcrumbs {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.page-title .breadcrumbs span {
  color: var(--color-primary);
}

.corporate-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: flex-start;
}

.corporate-text h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.corporate-text p {
  margin-bottom: 20px;
  color: var(--color-text-muted);
}

.vision-mission-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 50px;
}

.vis-mis-card {
  background-color: var(--bg-secondary);
  border: var(--glass-border);
  padding: 30px;
  border-radius: 12px;
  box-shadow: var(--card-shadow);
}

.vis-mis-card h3 {
  color: var(--color-primary);
  margin-bottom: 15px;
  font-size: 1.4rem;
}

.vis-mis-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Certificates List */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
  margin-top: 40px;
}

.cert-card {
  background-color: var(--bg-secondary);
  border: var(--glass-border);
  padding: 25px;
  border-radius: 8px;
  text-align: center;
  transition: var(--transition-smooth);
}

.cert-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
}

.cert-icon {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: 15px;
}

.cert-card h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.cert-card p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* Portfolio Page elements */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
}

.filter-btn {
  background-color: var(--bg-secondary);
  border: var(--glass-border);
  color: var(--color-text-muted);
  padding: 8px 20px;
  border-radius: 30px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn.active, .filter-btn:hover {
  background: var(--gradient-tech);
  color: #fff;
  border-color: transparent;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.portfolio-item {
  background-color: var(--bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  border: var(--glass-border);
  transition: var(--transition-smooth);
  box-shadow: var(--card-shadow);
}

.portfolio-item:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 210, 255, 0.3);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 210, 255, 0.1);
}

.portfolio-img {
  height: 220px;
  background-color: var(--bg-tertiary);
  position: relative;
  overflow: hidden;
}

.portfolio-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

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

.portfolio-info {
  padding: 25px;
}

.portfolio-tag {
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.portfolio-info h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.portfolio-info p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Contact Page Form & details */
.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 50px;
}

.contact-form-container {
  background-color: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: 12px;
  padding: 40px;
  box-shadow: var(--card-shadow);
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  background-color: var(--bg-primary);
  border: var(--glass-border);
  border-radius: 6px;
  padding: 12px 18px;
  color: var(--color-text-main);
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 10px rgba(0, 210, 255, 0.15);
}

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

.submit-btn {
  background: var(--gradient-tech);
  border: none;
  color: #fff;
  padding: 12px 30px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  width: 100%;
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
  transition: var(--transition-smooth);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 240, 255, 0.5);
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-info-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact-info-icon {
  width: 50px;
  height: 50px;
  background-color: rgba(0, 210, 255, 0.1);
  color: var(--color-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-info-text h3 {
  font-size: 1.15rem;
  margin-bottom: 5px;
}

.contact-info-text p, .contact-info-text a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.contact-map-mock {
  height: 250px;
  background-color: var(--bg-tertiary);
  border-radius: 12px;
  border: var(--glass-border);
  margin-top: 40px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-placeholder {
  text-align: center;
  padding: 20px;
}

.map-placeholder svg {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: 10px;
}

/* Footer Section */
footer {
  background-color: #05080e;
  border-top: var(--glass-border);
  padding: 80px 0 30px;
  color: var(--color-text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-about img {
  height: 45px;
  margin-bottom: 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  margin-bottom: 20px;
}

.footer-logo img {
  width: 50px;
  height: 50px;
  border-radius: 8px;
  margin-bottom: 0 !important;
}

.footer-logo .logo-text {
  font-size: 1.45rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}

.footer-about p {
  font-size: 0.95rem;
  margin-bottom: 25px;
}

.footer-social-links {
  display: flex;
  gap: 15px;
}

.footer-social-links a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: var(--bg-secondary);
  border: var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.footer-social-links a:hover {
  background: var(--gradient-tech);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
}

.footer-social-links a:hover svg {
  fill: #ffffff;
}

.footer-links h3 {
  color: var(--color-text-main);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 25px;
  position: relative;
}

.footer-links h3::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 35px;
  height: 2px;
  background-color: var(--color-primary);
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a:hover {
  color: var(--color-primary);
  padding-left: 5px;
}

.footer-contact h3 {
  color: var(--color-text-main);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 25px;
  position: relative;
}

.footer-contact h3::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 35px;
  height: 2px;
  background-color: var(--color-primary);
}

.footer-contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 15px;
}

.footer-contact-item svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 4px;
}

.footer-contact-item p {
  font-size: 0.9rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ===================================================
   RESPONSIVE STYLES — Tablet & Mobile
   =================================================== */

/* ---- Tablet: 1024px ---- */
@media (max-width: 1024px) {
  .hero-section {
    min-height: auto;
    padding: 160px 0 80px;
  }
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-graphic { display: none; }
  .hero-content h1 { font-size: 2.8rem; }
  .hero-buttons { justify-content: center; }

  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }

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

  .contact-layout { grid-template-columns: 1fr; }
  .contact-form-container { padding: 30px; }

  .corporate-info { grid-template-columns: 1fr; }
  .vision-mission-cards { grid-template-columns: 1fr 1fr; }

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

  /* Services detail page */
  .service-detail-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ---- Mobile: 768px ---- */
@media (max-width: 768px) {


  /* Header */
  .nav-links { display: none; }
  .cta-btn { display: none; }
  .mobile-menu-toggle { display: block; }
  .header-container { padding: 0 15px; }

  /* Hero */
  .hero-section { padding: 130px 0 60px; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero-content p { font-size: 1rem; }
  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  .hero-buttons a { width: 100%; text-align: center; }

  /* Sections */
  .section { padding: 60px 0; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 1.9rem; }
  .container { padding: 0 15px; }

  /* Grids → single column */
  .grid-2,
  .grid-3,
  .grid-4,
  .corporate-info,
  .vision-mission-cards,
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .grid-2 { gap: 30px; }

  /* Counters */
  .counter-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .counter-item h3 { font-size: 2.2rem; }
  .counter-item p { font-size: 0.8rem; }

  /* Portfolio */
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-filters {
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
  }
  .filter-btn { padding: 6px 14px; font-size: 0.85rem; }

  /* Certs */
  .certs-grid { grid-template-columns: repeat(2, 1fr); }

  /* Contact */
  .contact-form-container { padding: 20px; }

  /* Partners */
  .partners-slider {
    justify-content: center;
    gap: 20px;
  }

  /* CTA Banner */
  .cta-banner { padding: 50px 20px; border-radius: 10px; }
  .cta-banner h2 { font-size: 1.7rem; }

  /* Page title */
  .page-title { padding: 110px 0 30px; }
  .page-title h1 { font-size: 2rem; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  footer { padding: 60px 0 20px; }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .footer-bottom-links { justify-content: center; }
}

/* ---- Small Mobile: 480px ---- */
@media (max-width: 480px) {
  .logo-container img { height: 38px; }
  #header.scrolled .logo-container img { height: 32px; }
  .logo-text { font-size: 1.3rem; }
  #header.scrolled .logo-text { font-size: 1.15rem; }
  .logo-container a { gap: 8px; }

  .hero-section { padding: 110px 0 50px; }
  .hero-content h1 { font-size: 1.75rem; line-height: 1.2; }
  .hero-content p { font-size: 0.95rem; }

  .section { padding: 50px 0; }
  .section-header h2 { font-size: 1.6rem; }

  .counter-grid { grid-template-columns: 1fr; }
  .counter-item h3 { font-size: 2rem; }

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

  .service-card { padding: 28px 20px; }
  .portfolio-img { height: 180px; }

  .back-to-top {
    bottom: 18px;
    right: 15px;
    width: 38px;
    height: 38px;
    font-size: 0.9rem;
  }

  .page-title h1 { font-size: 1.7rem; }

  .vis-mis-card { padding: 20px; }
  .contact-form-container { padding: 15px; }

  .cta-banner h2 { font-size: 1.4rem; }
  .cta-banner p { font-size: 0.9rem; }
}

/* Mobile Side Navigation Overlay */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background-color: var(--bg-secondary);
  z-index: 2000;
  padding: 80px 40px;
  transition: var(--transition-smooth);
  box-shadow: -10px 0 30px rgba(0,0,0,0.5);
  border-left: var(--glass-border);
  overflow-y: auto;
}

.mobile-nav.open { right: 0; }

.mobile-nav-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--color-text-main);
  font-size: 1.8rem;
  cursor: pointer;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.mobile-nav-links a {
  font-size: 1.2rem;
  font-weight: 600;
  display: block;
}

.mobile-nav-links .has-dropdown .dropdown {
  position: static;
  opacity: 1;
  visibility: visible;
  transform: none;
  width: 100%;
  box-shadow: none;
  border: none;
  padding-left: 15px;
  margin-top: 10px;
  background-color: transparent;
}

.mobile-nav-links .has-dropdown .dropdown a {
  font-size: 0.95rem;
  padding: 8px 0;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  background: var(--gradient-tech);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-smooth);
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 210, 255, 0.5);
}

/* KVKK Cookie Consent Banner */
.cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translate(-50%, 50px);
  width: calc(100% - 40px);
  max-width: 850px;
  background: rgba(13, 21, 39, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(0, 210, 255, 0.15);
  border-radius: 12px;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  z-index: 9999;
  box-shadow: 0 15px 35px rgba(0,0,0,0.6);
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: var(--font-main);
}
.cookie-banner.show {
  transform: translate(-50%, 0);
  opacity: 1;
}
.cookie-banner p {
  font-size: 0.85rem;
  color: #e2e8f0;
  line-height: 1.6;
  margin: 0;
  font-weight: 400;
}
.cookie-banner-btns {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-shrink: 0;
}
.cookie-btn-accept {
  background: var(--gradient-tech);
  color: #080c14;
  border: none;
  padding: 9px 20px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
}
.cookie-btn-accept:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,210,255,0.4);
}
.cookie-btn-info {
  background: rgba(255,255,255,0.04);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.12);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.85rem;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s;
  white-space: nowrap;
}
.cookie-btn-info:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}
@media (max-width: 768px) {
  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
    bottom: 15px;
    padding: 18px;
    gap: 14px;
    width: calc(100% - 24px);
  }
  .cookie-banner-btns {
    width: 100%;
    justify-content: flex-end;
  }
}