/* ==========================================================================
   Cabernet Technologies Pvt Ltd - Master Stylesheet
   Design System: Glassmorphism, Velvet Cabernet & Cyber Teal Accents
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* --- Root Variables & Theme Definition --- */
:root {
  /* Color Palette - Default Dark Theme */
  --bg-main: #0b0813;
  --bg-secondary: #120d21;
  --bg-alt: #18122c;
  
  --primary: #8b1e3f;
  --primary-glow: rgba(139, 30, 63, 0.4);
  --primary-gradient: linear-gradient(135deg, #a61c47 0%, #6b1124 100%);
  --accent-teal: #00f5d4;
  --accent-teal-glow: rgba(0, 245, 212, 0.25);
  --accent-coral: #ff6b6b;

  --surface: rgba(22, 17, 36, 0.65);
  --surface-hover: rgba(35, 27, 56, 0.85);
  --surface-border: rgba(255, 255, 255, 0.1);
  --surface-border-hover: rgba(0, 245, 212, 0.4);

  --text-main: #f8f9fa;
  --text-muted: #9fa6bc;
  --text-dim: #6c738e;

  --nav-bg: rgba(11, 8, 19, 0.75);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(139, 30, 63, 0.3);

  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-main: #f4f6fb;
  --bg-secondary: #ffffff;
  --bg-alt: #eaedf6;

  --primary: #7a122e;
  --primary-glow: rgba(122, 18, 46, 0.15);
  --primary-gradient: linear-gradient(135deg, #8b1e3f 0%, #580c1e 100%);
  --accent-teal: #009688;
  --accent-teal-glow: rgba(0, 150, 136, 0.2);
  --accent-coral: #e63946;

  --surface: rgba(255, 255, 255, 0.75);
  --surface-hover: rgba(255, 255, 255, 0.95);
  --surface-border: rgba(122, 18, 46, 0.12);
  --surface-border-hover: rgba(122, 18, 46, 0.35);

  --text-main: #111827;
  --text-muted: #4b5563;
  --text-dim: #6b7280;

  --nav-bg: rgba(244, 246, 251, 0.85);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 30px rgba(122, 18, 46, 0.15);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-coral);
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* --- Typography Utilities --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-teal) 50%, #ff8fa3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .gradient-text {
  background: linear-gradient(135deg, #7a122e 0%, #111827 50%, #009688 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--primary-glow);
  border: 1px solid var(--surface-border-hover);
  color: var(--accent-teal);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 16px;
}

/* --- Layout Containers --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

/* Glassmorphism Panel Class */
.glass-card {
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.glass-card:hover {
  background: var(--surface-hover);
  border-color: var(--surface-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 10px 25px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px var(--primary-glow), 0 0 15px var(--accent-teal);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid var(--surface-border);
  color: var(--text-main);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-teal);
  color: var(--accent-teal);
}

/* --- Header & Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}

.header.scrolled {
  padding: 12px 0;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--surface-border);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--primary-glow);
}

.logo-text span {
  color: var(--accent-teal);
}

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

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-teal);
  transition: var(--transition);
  border-radius: 2px;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--surface-border);
  background: var(--surface);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}

.theme-toggle:hover {
  background: var(--surface-hover);
  border-color: var(--accent-teal);
  color: var(--accent-teal);
}

.mobile-nav-btn {
  display: none;
  font-size: 1.5rem;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
}

/* --- Hero Section --- */
.hero {
  padding-top: 170px;
  padding-bottom: 100px;
  overflow: hidden;
  position: relative;
}

.hero-glow-1 {
  position: absolute;
  top: -10%;
  left: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--primary-glow) 0%, rgba(0,0,0,0) 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  top: 30%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-teal-glow) 0%, rgba(0,0,0,0) 70%);
  filter: blur(100px);
  z-index: -1;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-title {
  font-size: 3.8rem;
  margin-bottom: 24px;
  line-height: 1.1;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--surface-border);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
}

.stat-number span {
  color: var(--accent-teal);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
}

.hero-img-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 40px var(--primary-glow);
  border: 1px solid var(--surface-border);
}

.hero-img-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}

.hero-img-wrapper:hover img {
  transform: scale(1.03);
}

.floating-badge {
  position: absolute;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--surface-border-hover);
  box-shadow: var(--shadow-lg);
  animation: float 4s ease-in-out infinite;
}

.badge-1 {
  top: 20px;
  left: -20px;
}

.badge-2 {
  bottom: 30px;
  right: -20px;
  animation-delay: -2s;
}

.badge-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

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

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px auto;
}

.section-title {
  font-size: 2.8rem;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow-lg);
}

.about-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.about-feature-item {
  padding: 18px;
}

.about-feature-item i {
  font-size: 1.5rem;
  color: var(--accent-teal);
  margin-bottom: 10px;
}

.about-feature-item h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.about-feature-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* --- Services Section --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
}

.service-card {
  padding: 36px;
  position: relative;
  overflow: hidden;
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: var(--primary-glow);
  border: 1px solid var(--surface-border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--accent-teal);
  margin-bottom: 24px;
}

.service-title {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

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

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

.service-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--surface-border);
  color: var(--text-muted);
}

/* --- Engagement Models --- */
.models-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.model-card {
  padding: 40px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
}

.model-card.popular {
  border-color: var(--accent-teal);
  box-shadow: 0 0 30px var(--accent-teal-glow);
}

.popular-badge {
  position: absolute;
  top: -14px;
  right: 24px;
  background: var(--accent-teal);
  color: #0b0813;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
}

.model-name {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.model-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 48px;
}

.model-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.model-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  margin-bottom: 12px;
  color: var(--text-muted);
}

.model-features li i {
  color: var(--accent-teal);
}

/* --- Tech Stack Radar --- */
.tech-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tech-tab {
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  color: var(--text-muted);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.tech-tab.active, .tech-tab:hover {
  background: var(--primary-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 20px;
}

.tech-item {
  padding: 24px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.tech-icon {
  font-size: 2.2rem;
  color: var(--accent-teal);
}

.tech-name {
  font-weight: 600;
  font-size: 0.95rem;
}

/* --- Project Cost Estimator --- */
.estimator-box {
  padding: 48px;
  max-width: 900px;
  margin: 0 auto;
}

.estimator-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.estimator-group {
  margin-bottom: 28px;
}

.estimator-label {
  display: block;
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.options-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.option-btn {
  padding: 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--surface-border);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.88rem;
  text-align: center;
  transition: var(--transition);
}

.option-btn.active, .option-btn:hover {
  border-color: var(--accent-teal);
  background: var(--primary-glow);
  color: var(--text-main);
}

.slider-container input[type="range"] {
  width: 100%;
  accent-color: var(--accent-teal);
}

.estimate-summary {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  padding: 36px;
  border: 1px dashed var(--surface-border-hover);
}

.est-amount {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-teal);
  margin: 16px 0;
}

/* --- Agile Process --- */
.timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.timeline-step {
  padding: 24px;
  position: relative;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 20px;
  box-shadow: 0 0 15px var(--primary-glow);
}

.step-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Contact & Modal --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

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

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
}

.info-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-glow);
  color: var(--accent-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.contact-form {
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--surface-border);
  color: var(--text-main);
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent-teal);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 15px var(--accent-teal-glow);
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  width: 90%;
  max-width: 550px;
  padding: 40px;
  position: relative;
  transform: scale(0.9);
  transition: var(--transition);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--surface-border);
  padding: 80px 0 30px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-title {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

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

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

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--surface-border);
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .hero-grid, .about-grid, .estimator-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-title {
    font-size: 3rem;
  }
  .models-grid {
    grid-template-columns: 1fr;
  }
  .timeline {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    justify-content: center;
    transition: 0.4s ease;
    border-left: 1px solid var(--surface-border);
  }
  .nav-menu.active {
    right: 0;
  }
  .mobile-nav-btn {
    display: block;
  }
  .hero-title {
    font-size: 2.4rem;
  }
  .hero-stats {
    grid-template-columns: 1fr;
  }
  .about-features {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}