/* ============================================================
   Shivani Technologies — style.css
   Clean, modern, high-performance vanilla CSS layout
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  --bg-primary: #f9fafb;
  --bg-secondary: #f3f4f6;
  --bg-card: #ffffff;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-glow: rgba(79, 70, 229, 0.15);
  --accent: #0891b2;
  --success: #059669;
  --border: rgba(17, 24, 39, 0.08);
  
  --bg-header: rgba(249, 250, 251, 0.85);
  --bg-header-scrolled: rgba(249, 250, 251, 0.95);
  --shadow-header: 0 10px 30px rgba(0, 0, 0, 0.05);
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
  --glow-opacity: 0.05;
}

body.dark-theme {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1f2937;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.4);
  --accent: #06b6d4;
  --success: #10b981;
  --border: rgba(255, 255, 255, 0.08);
  
  --bg-header: rgba(10, 14, 23, 0.85);
  --bg-header-scrolled: rgba(10, 14, 23, 0.95);
  --shadow-header: 0 10px 30px rgba(0, 0, 0, 0.3);
  
  --glow-opacity: 0.15;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
}

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

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

.section-padding {
  padding: 100px 0;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #6366f1);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.6);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

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

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

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

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
}

.brand span {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 32px;
}

.nav-item a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

.nav-item a:hover,
.nav-item.active a {
  color: var(--text-primary);
}

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

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition);
}

/* Theme Toggle Button */
.theme-toggle-item {
  display: flex;
  align-items: center;
}

.theme-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text-secondary);
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  border-radius: 50%;
  width: 38px;
  height: 38px;
}

.theme-btn:hover {
  color: var(--primary);
  background: rgba(0, 0, 0, 0.04);
}

body.dark-theme .theme-btn:hover {
  background: rgba(255, 255, 255, 0.04);
}

@media (max-width: 768px) {
  .theme-toggle-item {
    margin-top: 10px;
  }
}

.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  background: radial-gradient(circle at 80% 20%, rgba(79, 70, 229, var(--glow-opacity)) 0%, transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(6, 182, 212, var(--glow-opacity)) 0%, transparent 40%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-primary) 60%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.15rem;
  margin-bottom: 40px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

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

.hero-graphic::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: var(--primary-glow);
  filter: blur(80px);
  border-radius: 50%;
  z-index: -1;
}

.hero-illustration {
  width: 100%;
  max-width: 450px;
  animation: float 6s ease-in-out infinite;
}

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

/* Section Header */
.section-header {
  max-width: 650px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header p {
  font-size: 1.05rem;
}

/* Products Section */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.product-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.03) 0%, transparent 100%);
  opacity: 0;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: rgba(79, 70, 229, 0.3);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

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

.product-icon {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  background: rgba(79, 70, 229, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: 24px;
}

.product-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.product-card p {
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.product-features {
  list-style: none;
}

.product-features li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: bold;
}

/* Services Preview */
.services-preview {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.service-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 30px 24px;
  transition: var(--transition);
}

.service-card:hover {
  border-color: rgba(6, 182, 212, 0.3);
  transform: translateY(-3px);
}

.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.service-card p {
  font-size: 0.9rem;
}

/* About Section */
.about {
  position: relative;
}

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

.about-content h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.about-content p {
  margin-bottom: 24px;
}

.about-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}

.meta-item h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.meta-item p {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-heading);
}

.about-card {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(79, 70, 229, 0.05) 100%);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 48px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-card::after {
  content: '';
  position: absolute;
  top: -10%;
  right: -10%;
  width: 150px;
  height: 150px;
  background: var(--primary-glow);
  filter: blur(50px);
  border-radius: 50%;
  z-index: -1;
}

.quote-text {
  font-size: 1.2rem;
  font-style: italic;
  color: var(--text-primary);
  position: relative;
}

.quote-author {
  display: flex;
  align-items: center;
  gap: 16px;
}

.author-info h4 {
  font-size: 1.05rem;
  margin-bottom: 2px;
}

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

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.info-item {
  display: flex;
  gap: 16px;
}

.info-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(79, 70, 229, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--primary);
  flex-shrink: 0;
}

.info-details h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.info-details p {
  font-size: 0.95rem;
}

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

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

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

/* Footer */
footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-links {
  display: flex;
  list-style: none;
  gap: 24px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.85rem;
}

/* Subpage Hero */
.subpage-hero {
  padding: 160px 0 80px;
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.05) 0%, transparent 100%);
  border-bottom: 1px solid var(--border);
}

.subpage-hero h1 {
  font-size: 3rem;
  margin-bottom: 16px;
}

.subpage-hero p {
  font-size: 1.15rem;
  max-width: 700px;
}

/* Services Detail Page */
.services-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
}

.service-detail-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 40px;
  transition: var(--transition);
}

.service-detail-card:hover {
  transform: translateY(-5px);
  border-color: rgba(6, 182, 212, 0.3);
}

.service-detail-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.service-detail-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(6, 182, 212, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--accent);
}

.service-detail-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Careers Page */
.career-section-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
}

.openings-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.job-opening-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: var(--transition);
}

.job-opening-card:hover {
  border-color: rgba(79, 70, 229, 0.25);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.job-meta-row {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.job-tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.job-tag.urgent {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

.job-opening-card h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.job-opening-card p {
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.job-details-list {
  margin-bottom: 20px;
  padding-left: 20px;
}

.job-details-list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

/* Custom Alert Message */
.alert {
  padding: 16px;
  border-radius: 10px;
  font-size: 0.95rem;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #34d399;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .hero-grid,
  .about-grid,
  .contact-grid,
  .career-section-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .hero-graphic {
    order: -1;
  }
  
  .hero-content h1 {
    font-size: 2.8rem;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    right: 0;
    bottom: 0;
    height: calc(100vh - 80px);
    background: var(--bg-primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    transition: var(--transition);
    z-index: 999;
    border-top: 1px solid var(--border);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-item a {
    font-size: 1.25rem;
  }
  
  .hero-content h1 {
    font-size: 2.3rem;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
}