/* ========================================
   DATKOR - KURUMSAL WEB SİTESİ STİLLERİ
   ======================================== */

:root {
  --primary: #1a9be8;
  --primary-dark: #0e7bc5;
  --primary-light: #4db8ff;
  --accent: #00d4ff;
  --dark: #0a0e1a;
  --dark-2: #111827;
  --dark-3: #1c2535;
  --dark-4: #243044;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --white: #ffffff;
  --border: rgba(255,255,255,0.08);
  --border-light: rgba(26,155,232,0.2);
  --card-bg: rgba(17,24,39,0.8);
  --gradient: linear-gradient(135deg, #1a9be8, #00d4ff);
  --gradient-dark: linear-gradient(135deg, #0a0e1a, #111827);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.6);
  --shadow-blue: 0 8px 32px rgba(26,155,232,0.3);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-2); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ===== TYPOGRAPHY ===== */
.section-tag {
  display: inline-block;
  background: rgba(26,155,232,0.15);
  color: var(--primary-light);
  border: 1px solid rgba(26,155,232,0.3);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--white);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(26,155,232,0.45);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10,14,26,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.logo-img {
  height: 38px;
  width: auto;
  filter: invert(1) hue-rotate(180deg);
  transition: var(--transition);
}
.logo-img:hover { filter: invert(1) hue-rotate(180deg) brightness(1.2); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
  background: rgba(255,255,255,0.06);
}

.nav-link.nav-cta {
  background: var(--gradient);
  color: var(--white);
  font-weight: 600;
  padding: 8px 20px;
}
.nav-link.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-blue);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(26,155,232,0.18) 0%, transparent 70%),
              radial-gradient(ellipse 40% 40% at 80% 80%, rgba(0,212,255,0.08) 0%, transparent 60%),
              var(--dark);
}

#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(26,155,232,0.12);
  border: 1px solid rgba(26,155,232,0.3);
  color: var(--primary-light);
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 28px;
  animation: fadeInDown 0.8s ease;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 580px;
  margin-bottom: 36px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  animation: fadeInUp 0.8s ease 0.4s both;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  backdrop-filter: blur(10px);
  width: fit-content;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 28px;
}

.stat-item span:first-child {
  font-size: 2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
}
.stat-item > span:nth-child(2) {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}

.stat-number {
  font-size: 2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 4px;
  text-align: center;
  white-space: nowrap;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero-scroll a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-light);
  border-radius: 50%;
  color: var(--primary-light);
  font-size: 0.9rem;
  animation: bounce 2s infinite;
  transition: var(--transition);
}
.hero-scroll a:hover { background: rgba(26,155,232,0.15); }

/* ===== SERVICES ===== */
.services {
  padding: 100px 0;
  background: var(--dark-2);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-blue);
}

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

.service-card.featured {
  border-color: rgba(26,155,232,0.4);
  background: linear-gradient(135deg, rgba(26,155,232,0.1), rgba(0,212,255,0.05));
}

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

.service-badge {
  position: absolute;
  top: 20px; right: 20px;
  background: var(--gradient);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.04em;
}

.service-icon {
  width: 56px;
  height: 56px;
  background: rgba(26,155,232,0.15);
  border: 1px solid rgba(26,155,232,0.25);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
  margin-bottom: 20px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: rgba(26,155,232,0.25);
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(26,155,232,0.3);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.service-list {
  margin-bottom: 24px;
}

.service-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-list li i {
  color: var(--primary);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-light);
  font-size: 0.88rem;
  font-weight: 600;
  transition: var(--transition);
}

.service-link:hover { gap: 10px; color: var(--accent); }

/* ===== ABOUT ===== */
.about {
  padding: 100px 0;
  background: var(--dark);
}

.about-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about-visual {
  position: relative;
  min-height: 480px;
}

.about-card-main {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  height: 380px;
  position: relative;
  overflow: hidden;
}

.about-card-main::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(26,155,232,0.08) 0%, transparent 70%);
}

.about-icon-large {
  font-size: 5rem;
  color: var(--primary);
  opacity: 0.8;
  position: relative;
  z-index: 1;
}

.about-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.tech-tag {
  background: rgba(26,155,232,0.12);
  border: 1px solid rgba(26,155,232,0.25);
  color: var(--primary-light);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  transition: var(--transition);
}

.tech-tag:hover {
  background: rgba(26,155,232,0.25);
  transform: translateY(-2px);
}

.about-floating-card {
  position: absolute;
  background: var(--dark-4);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  animation: floatCard 4s ease-in-out infinite;
}

.about-floating-card i {
  font-size: 1.4rem;
  color: var(--primary);
}

.about-floating-card strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
}

.about-floating-card span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.card-1 {
  top: 30px;
  right: -20px;
  animation-delay: 0s;
}

.card-2 {
  bottom: 60px;
  right: -10px;
  animation-delay: 2s;
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.75;
}

.about-features {
  margin: 32px 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(26,155,232,0.12);
  border: 1px solid rgba(26,155,232,0.2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--primary);
  flex-shrink: 0;
}

.about-feature h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}

.about-feature p {
  font-size: 0.85rem;
  margin: 0;
  color: var(--text-muted);
}

/* ===== SOLUTIONS ===== */
.solutions {
  padding: 100px 0;
  background: var(--dark-2);
  position: relative;
}

.solutions::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(26,155,232,0.4), transparent);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.solution-item {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: var(--transition);
}

.solution-item:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-blue);
}

.solution-number {
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  flex-shrink: 0;
}

.solution-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.solution-content h3 i { color: var(--primary); font-size: 0.9rem; }

.solution-content p {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===== TESTIMONIALS ===== */
.testimonials {
  padding: 100px 0;
  background: var(--dark);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 5rem;
  color: rgba(26,155,232,0.1);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-blue);
}

.testimonial-stars {
  color: #f59e0b;
  font-size: 0.85rem;
  margin-bottom: 16px;
  display: flex;
  gap: 3px;
}

.testimonial-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--white);
  flex-shrink: 0;
}

.testimonial-author strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
}

.testimonial-author span {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ===== CONTACT ===== */
.contact {
  padding: 100px 0;
  background: var(--dark-2);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(26,155,232,0.4), transparent);
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 72px;
  align-items: start;
}

.contact-info .section-title {
  margin-bottom: 12px;
}

.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.7;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(26,155,232,0.12);
  border: 1px solid rgba(26,155,232,0.2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
  font-size: 0.95rem;
}

.contact-item strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 2px;
}

.contact-item span {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.social-links {
  display: flex;
  gap: 10px;
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

.social-link:hover {
  background: rgba(26,155,232,0.15);
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
}

/* FORM */
.contact-form-wrapper {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 28px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--white);
  font-size: 0.92rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
  -webkit-appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-group select option {
  background: var(--dark-3);
  color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: rgba(26,155,232,0.06);
  box-shadow: 0 0 0 3px rgba(26,155,232,0.12);
}

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

.form-success {
  display: none;
  background: rgba(34,197,94,0.12);
  border: 1px solid rgba(34,197,94,0.3);
  color: #4ade80;
  padding: 14px 18px;
  border-radius: 10px;
  margin-top: 16px;
  font-size: 0.9rem;
  align-items: center;
  gap: 10px;
}

.form-success.show {
  display: flex;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  border-top: 1px solid var(--border);
  padding-top: 72px;
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 64px;
}

.footer-logo {
  height: 36px;
  margin-bottom: 20px;
  filter: invert(1) hue-rotate(180deg);
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.83rem;
  color: var(--text-dim);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.85rem;
  box-shadow: var(--shadow-blue);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: var(--transition);
}

.back-to-top.show {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.back-to-top:hover { transform: translateY(-4px); }

/* ===== WHATSAPP BALONU ===== */
.whatsapp-bubble {
  position: fixed;
  bottom: 32px;
  right: 88px;
  width: 54px;
  height: 54px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.7rem;
  box-shadow: 0 4px 20px rgba(37,211,102,0.45);
  z-index: 999;
  transition: var(--transition);
  animation: waPulse 2.5s ease-in-out infinite;
}

.whatsapp-bubble:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 28px rgba(37,211,102,0.6);
}

.whatsapp-tooltip {
  position: absolute;
  right: 62px;
  background: #1a1a2e;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 6px 12px;
  border-radius: 8px;
  pointer-events: none;
  opacity: 0;
  transform: translateX(6px);
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.1);
}

.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: #1a1a2e;
  border-right: none;
}

.whatsapp-bubble:hover .whatsapp-tooltip {
  opacity: 1;
  transform: translateX(0);
}

@keyframes waPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.45); }
  50% { box-shadow: 0 4px 32px rgba(37,211,102,0.7), 0 0 0 8px rgba(37,211,102,0.1); }
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Scroll reveal */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animated {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .about-container { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { min-height: 320px; }
  .contact-container { grid-template-columns: 1fr; gap: 48px; }
  .footer-container { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(10,14,26,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 80px 24px 40px;
    gap: 8px;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid var(--border);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-link { width: 100%; padding: 14px 20px; font-size: 1rem; }
  .hamburger { display: flex; }

  .hero-stats {
    flex-wrap: wrap;
    gap: 0;
    padding: 20px;
    width: 100%;
  }
  .stat-item { padding: 12px 16px; flex: 1; min-width: 120px; }
  .stat-divider { display: none; }

  .services-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrapper { padding: 28px 20px; }

  .footer-container { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom .container { flex-direction: column; gap: 8px; text-align: center; }

  .card-1, .card-2 { display: none; }

  .hero-buttons { flex-direction: column; align-items: flex-start; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .section-title { font-size: 1.6rem; }
  .hero-title { font-size: 2rem; }
  .container { padding: 0 16px; }
  .services, .about, .solutions, .testimonials, .contact { padding: 72px 0; }
}