/* ============================================
   SARDAR SONS TECHNOLOGY — Global Styles
   Dark Premium Theme (Linear-inspired)
   ============================================ */

/* --- CSS Variables (Accent Color System) --- */
:root {
  /* Swap these to change accent color site-wide */
  --accent: #3B82F6;          /* Electric Blue */
  --accent-light: #60A5FA;
  --accent-dark: #2563EB;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --accent-glow-strong: rgba(59, 130, 246, 0.3);

  /* Violet alternative:
  --accent: #8B5CF6;
  --accent-light: #A78BFA;
  --accent-dark: #7C3AED;
  --accent-glow: rgba(139, 92, 246, 0.15);
  --accent-glow-strong: rgba(139, 92, 246, 0.3);
  */

  /* Emerald alternative:
  --accent: #10B981;
  --accent-light: #34D399;
  --accent-dark: #059669;
  --accent-glow: rgba(16, 185, 129, 0.15);
  --accent-glow-strong: rgba(16, 185, 129, 0.3);
  */

  /* Neutrals */
  --bg-primary: #09090B;
  --bg-secondary: #111113;
  --bg-tertiary: #18181B;
  --bg-card: #1C1C1F;
  --bg-card-hover: #232326;
  --border: #27272A;
  --border-light: #3F3F46;
  --text-primary: #FAFAFA;
  --text-secondary: #A1A1AA;
  --text-tertiary: #71717A;
  --text-muted: #52525B;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
  --section-padding: 120px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;

  /* Transitions */
  --transition: 0.2s ease;
  --transition-slow: 0.4s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 1.0625rem;
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Section --- */
.section {
  padding: var(--section-padding) 0;
}

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

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-title {
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

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

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

.section-header-center .section-subtitle {
  margin: 0 auto;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: screen;
}

/* Fallback text icon when no image */
.nav-logo-icon-text {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.875rem;
  color: white;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.nav-cta {
  background: var(--accent) !important;
  color: white !important;
  font-weight: 500;
  padding: 8px 20px !important;
}

.nav-cta:hover {
  background: var(--accent-dark) !important;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--border-radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-dark);
  box-shadow: 0 0 30px var(--accent-glow-strong);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  border-color: var(--text-tertiary);
  background: rgba(255,255,255,0.03);
}

.btn-ghost {
  background: transparent;
  color: var(--accent-light);
  padding: 8px 0;
}

.btn-ghost:hover {
  color: var(--accent);
}

.btn-ghost svg, .btn-primary svg, .btn-secondary svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.btn-ghost:hover svg {
  transform: translateX(4px);
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding-top: calc(var(--nav-height) + 80px);
  padding-bottom: var(--section-padding);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  margin-bottom: 24px;
  background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero .btn-group {
  justify-content: center;
}

/* ============================================
   LOGOS / STATS BAR
   ============================================ */
.stats-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-item p {
  font-size: 0.9375rem;
  color: var(--text-tertiary);
}

/* ============================================
   SERVICES
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-glow-strong), transparent);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.service-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--accent);
}

.service-card h3 {
  margin-bottom: 12px;
}

.service-card p {
  margin-bottom: 20px;
  font-size: 0.9375rem;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.service-tag {
  padding: 4px 12px;
  background: rgba(255,255,255,0.05);
  border-radius: 100px;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

/* ============================================
   PORTFOLIO / WORK
   ============================================ */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.work-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
}

.work-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.work-card-image {
  width: 100%;
  height: 240px;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.work-card-image-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow), rgba(139, 92, 246, 0.1));
}

.work-card-image-label {
  position: relative;
  z-index: 1;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.work-card-body {
  padding: 32px;
}

.work-card-category {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 12px;
}

.work-card h3 {
  margin-bottom: 12px;
}

.work-card p {
  margin-bottom: 20px;
  font-size: 0.9375rem;
}

.work-card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.work-card-tech span {
  padding: 4px 10px;
  background: rgba(255,255,255,0.05);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  border: 1px solid var(--border);
}

/* ============================================
   PROCESS
   ============================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 15%;
  right: 15%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-light), transparent);
}

.process-step {
  text-align: center;
  position: relative;
}

.process-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--accent);
  position: relative;
  z-index: 1;
}

.process-step h4 {
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.testimonial-quote {
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 28px;
  font-style: italic;
}

.testimonial-author {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.testimonial-role {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-content h2 {
  margin-bottom: 20px;
}

.about-content p {
  margin-bottom: 16px;
}

.about-image {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-lg);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow), transparent);
}

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

.value-item {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
}

.value-item h4 {
  margin-bottom: 8px;
  color: var(--accent-light);
}

.value-item p {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  padding: var(--section-padding) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  margin-bottom: 16px;
}

.cta-section p {
  margin-bottom: 32px;
  font-size: 1.125rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 32px;
}

.cta-section .btn-group {
  justify-content: center;
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.contact-info h2 {
  margin-bottom: 16px;
}

.contact-info > p {
  margin-bottom: 40px;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.contact-method-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}

.contact-method h4 {
  margin-bottom: 4px;
}

.contact-method p, .contact-method a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.contact-method a:hover {
  color: var(--accent-light);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-lg);
  padding: 40px;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2371717A' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

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

.footer-brand p {
  font-size: 0.9375rem;
  color: var(--text-tertiary);
  margin-top: 16px;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

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

.footer-col a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  color: var(--text-tertiary);
  transition: color var(--transition);
}

.footer-social a:hover {
  color: var(--accent);
}

/* ============================================
   PAGE HERO (for inner pages)
   ============================================ */
.page-hero {
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 60px;
  text-align: center;
  position: relative;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero-content {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 1.125rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================
   BLOG
   ============================================ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
}

.blog-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.blog-card-image {
  height: 180px;
  background: var(--bg-tertiary);
  position: relative;
}

.blog-card-body {
  padding: 24px;
}

.blog-card-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.blog-card h3 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.blog-card p {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr; }
  .work-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .values-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 80px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-description {
    font-size: 1.0625rem;
  }

  .btn-group {
    flex-direction: column;
    align-items: center;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

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

  .service-card {
    padding: 28px;
  }

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

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

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