/* ── Reset & Base ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

:root {
  --bg-primary:    #060912;
  --bg-secondary:  #0c1018;
  --bg-card:       rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.055);
  --border:        rgba(255, 255, 255, 0.08);
  --border-hover:  rgba(99, 179, 237, 0.35);
  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:    #475569;
  --accent-blue:   #3b82f6;
  --accent-purple: #8b5cf6;
  --gradient:      linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --radius:        12px;
  --radius-lg:     20px;
  --shadow-card:   0 24px 64px rgba(0, 0, 0, 0.4);
}

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

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

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

.section { padding: 100px 0; }

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

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent-blue);
  padding: 6px 16px;
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 100px;
  background: rgba(59, 130, 246, 0.07);
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.75;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  line-height: 1;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
}
.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 1rem;
  border-radius: 10px;
}

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

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding: 18px 0;
  transition: background 0.3s ease, border-color 0.3s ease, padding 0.3s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(6, 9, 18, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom-color: var(--border);
  padding: 12px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.06em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  margin-right: auto;
}

.nav-logo-icon {
  width: 22px;
  height: auto;
  flex-shrink: 0;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 7px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.nav-cta { margin-left: 16px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 140px 0 90px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.13;
  animation: blobPulse 10s ease-in-out infinite;
}
.blob-1 {
  width: 700px; height: 700px;
  background: radial-gradient(circle, #3b82f6, transparent 70%);
  top: -150px; right: -150px;
}
.blob-2 {
  width: 580px; height: 580px;
  background: radial-gradient(circle, #8b5cf6, transparent 70%);
  bottom: -80px; left: -80px;
  animation-delay: -5s;
}
@keyframes blobPulse {
  0%, 100% { transform: scale(1);   opacity: 0.13; }
  50%       { transform: scale(1.1); opacity: 0.2; }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: 100px;
  margin-bottom: 32px;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
}
.hero-badge::before {
  content: '';
  display: block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(3rem, 7.5vw, 5.75rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  padding: 22px 32px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.stat-number {
  display: block;
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── Tech Marquee ───────────────────────────────────────────── */
.tech-marquee {
  padding: 18px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  overflow: hidden;
}

.marquee-track { overflow: hidden; }

.marquee-items {
  display: flex;
  gap: 56px;
  width: max-content;
  animation: marquee 35s linear infinite;
}
.marquee-items:hover { animation-play-state: paused; }

.marquee-items span {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color 0.2s;
  cursor: default;
  user-select: none;
}
.marquee-items span:hover { color: var(--accent-blue); }

@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Services ───────────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}

.service-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.05) 0%, transparent 100%);
}
.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
}
.service-card:hover::after { opacity: 1; }

.service-icon {
  width: 48px; height: 48px;
  padding: 10px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  color: var(--accent-blue);
  margin-bottom: 20px;
}
.service-icon svg { width: 100%; height: 100%; }

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  line-height: 1.3;
}
.service-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 20px;
}

.service-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.service-tags li {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 11px;
  border-radius: 100px;
  background: rgba(59, 130, 246, 0.09);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.18);
  letter-spacing: 0.3px;
}

/* ── Portfolio ──────────────────────────────────────────────── */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}

.portfolio-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.portfolio-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
}

.portfolio-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.portfolio-industry {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.portfolio-year {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.portfolio-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
  color: var(--text-primary);
}
.portfolio-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 20px;
}

.portfolio-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.portfolio-tech span {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 11px;
  border-radius: 100px;
  background: rgba(139, 92, 246, 0.09);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.18);
  letter-spacing: 0.3px;
}

/* ── Why Choose Us ──────────────────────────────────────────── */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.why-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.why-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
}

.why-icon {
  width: 48px; height: 48px;
  padding: 10px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  color: var(--accent-blue);
  margin-bottom: 20px;
}
.why-icon svg { width: 100%; height: 100%; }

.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.why-subtitle {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-blue);
  margin-bottom: 14px;
}

.why-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
  flex: 1;
}

.why-stat {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.why-stat-number {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.why-stat-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* ── About ──────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-content .section-tag { display: inline-block; margin-bottom: 16px; }
.about-content .section-title { text-align: left; margin-bottom: 20px; }
.about-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 14px;
}

.about-values-header {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 16px;
  margin-top: 24px;
}

.about-values {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.value {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.value-icon {
  width: 28px; height: 28px;
  min-width: 28px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}
.value-icon svg { width: 14px; height: 14px; }
.value strong { display: block; font-size: 0.95rem; font-weight: 700; margin-bottom: 3px; }
.value p { margin: 0; font-size: 0.875rem; color: var(--text-secondary); }

.about-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.experience-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.about-image {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
}
.exp-number {
  font-size: 5.5rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: 8px;
}
.exp-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

.industries-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.industry-pill {
  padding: 9px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s;
}
.industry-pill:hover { border-color: var(--border-hover); color: var(--text-primary); }

.tech-stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.tech-item {
  padding: 14px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
  color: var(--text-secondary);
  transition: all 0.2s ease;
  cursor: default;
}
.tech-item:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

/* ── Contact ────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-top: 8px;
}
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-icon {
  width: 42px; height: 42px;
  min-width: 42px;
  padding: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--accent-blue);
}
.contact-icon svg { width: 100%; height: 100%; }
.contact-item strong {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.contact-item a, .contact-item span {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.contact-item a:hover { color: var(--accent-blue); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.form-group input,
.form-group textarea {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.04);
}
.form-group.error label::after {
  content: ' *';
  color: #f87171;
}
.form-group.error input,
.form-group.error textarea {
  border-color: #f87171;
}

.form-status {
  font-size: 0.875rem;
  text-align: center;
  min-height: 1.4em;
  color: #22c55e;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.06em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.footer-nav { display: flex; gap: 24px; }
.footer-nav a {
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--text-primary); }

/* ── Fade-in Animations ─────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(6, 9, 18, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    padding: 12px 16px 16px;
    border-bottom: 1px solid var(--border);
    gap: 2px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 16px; font-size: 1rem; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }

  .hero { padding: 120px 0 72px; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .stat-divider { display: none; }

  .services-grid,
  .portfolio-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }

  .tech-stack-grid { grid-template-columns: repeat(4, 1fr); }

  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.75rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .section-title { font-size: 1.75rem; }
  .experience-card { padding: 28px; }
  .exp-number { font-size: 4rem; }
}