/* -------------------------------------------------------------------
   SPARKZ IT SOLUTIONS - MODERN DESIGN SYSTEM WITH LIGHT/DARK THEMES
   Hyderabad, India | Educational Mentorship & Product Development
   Partners: AiGiriLabs.com | Community: TechKonnects
   Official Web: sparkzitsolutions.com
   ------------------------------------------------------------------- */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Dark Theme Default Variables */
  --bg-dark: #070A11;
  --bg-card: rgba(15, 23, 42, 0.85);
  --bg-card-hover: rgba(26, 38, 66, 0.9);
  --bg-elevated: #0F172A;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 240, 255, 0.25);
  
  --primary-cyan: #00F0FF;
  --primary-purple: #8B5CF6;
  --primary-blue: #2563EB;
  --accent-pink: #EC4899;
  --accent-amber: #F59E0B;
  --whatsapp-green: #25D366;
  --whatsapp-hover: #1EBE57;
  
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-code: 'JetBrains Mono', monospace;
  
  --shadow-glow-cyan: 0 0 25px rgba(0, 240, 255, 0.2);
  --shadow-glow-purple: 0 0 25px rgba(139, 92, 246, 0.25);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --grid-line-color: rgba(255, 255, 255, 0.03);
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-dark: #F8FAFC;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(241, 245, 249, 1);
  --bg-elevated: #FFFFFF;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-glow: rgba(0, 136, 255, 0.3);
  
  --primary-cyan: #0088FF;
  --primary-purple: #7C3AED;
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-dim: #64748B;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
  --shadow-glow-cyan: 0 0 25px rgba(0, 136, 255, 0.15);
  --shadow-glow-purple: 0 0 25px rgba(124, 58, 237, 0.15);
  --grid-line-color: rgba(0, 0, 0, 0.04);
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Background Animated Gradient Mesh */
.bg-mesh {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  background: 
    radial-gradient(circle at 15% 20%, rgba(0, 240, 255, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 60%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 50% 85%, rgba(236, 72, 153, 0.06) 0%, transparent 40%);
  pointer-events: none;
}

[data-theme="light"] .bg-mesh {
  background: 
    radial-gradient(circle at 15% 20%, rgba(0, 136, 255, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 60%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 50% 85%, rgba(236, 72, 153, 0.04) 0%, transparent 40%);
}

.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background-image: linear-gradient(to right, var(--grid-line-color) 1px, transparent 1px),
                    linear-gradient(to bottom, var(--grid-line-color) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* Logo Image Styling */
.brand-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  background: #FFFFFF;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glow);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: var(--transition);
}

.brand-logo-img:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 18px rgba(0, 240, 255, 0.3);
}

/* Typography Utilities */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-purple) 50%, var(--accent-pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cyan-text { color: var(--primary-cyan); }
.purple-text { color: var(--primary-purple); }
.amber-text { color: var(--accent-amber); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  color: var(--primary-cyan);
  margin-bottom: 16px;
}

[data-theme="light"] .badge {
  background: rgba(0, 136, 255, 0.08);
  border-color: rgba(0, 136, 255, 0.25);
  color: var(--primary-cyan);
}

.badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--primary-cyan);
  box-shadow: 0 0 10px var(--primary-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Container */
.container {
  width: 90%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-cyan) 0%, #00A3FF 100%);
  color: #050B14;
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
}

[data-theme="light"] .btn-primary {
  color: #FFFFFF;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.5);
}

.btn-purple {
  background: linear-gradient(135deg, var(--primary-purple) 0%, #6D28D9 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.btn-purple:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.5);
}

.btn-whatsapp {
  background-color: var(--whatsapp-green);
  color: #FFFFFF;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35);
}

.btn-whatsapp:hover {
  background-color: var(--whatsapp-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.5);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}

[data-theme="light"] .btn-outline {
  background: rgba(0, 0, 0, 0.04);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--primary-cyan);
  color: var(--primary-cyan);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

/* Theme Switcher Toggle Button */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
}

[data-theme="light"] .theme-toggle-btn {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-main);
}

.theme-toggle-btn:hover {
  border-color: var(--primary-cyan);
  color: var(--primary-cyan);
  transform: rotate(15deg);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.header.scrolled {
  padding: 10px 0;
  background: rgba(7, 10, 17, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .header.scrolled {
  background: rgba(248, 250, 252, 0.9);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

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

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-cyan);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-cyan);
  transition: var(--transition);
  border-radius: 2px;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.6rem;
  cursor: pointer;
}

/* HERO SECTION */
.hero {
  padding-top: 160px;
  padding-bottom: 90px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}

.hero-title {
  font-size: 3.3rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 600px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
}

.stat-num span {
  color: var(--primary-cyan);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.hero-visual {
  position: relative;
}

.hero-card-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-glow-purple), var(--shadow-card);
}

.hero-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

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

/* Floating Tech Badges on Hero Visual */
.float-card {
  position: absolute;
  padding: 14px 20px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  animation: float 4s ease-in-out infinite;
}

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

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.float-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.icon-cyan { background: rgba(0, 240, 255, 0.15); color: var(--primary-cyan); }
.icon-purple { background: rgba(139, 92, 246, 0.15); color: var(--primary-purple); }

.float-title {
  font-size: 0.9rem;
  font-weight: 700;
}

.float-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* PARTNERSHIP & COMMUNITY BADGES */
.aigirilabs-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(0, 240, 255, 0.15));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 20px;
}

.aigirilabs-badge i {
  color: var(--primary-purple);
}

.techkonnects-box {
  background: linear-gradient(135deg, rgba(37, 211, 102, 0.1), rgba(15, 23, 42, 0.8));
  border: 1px solid rgba(37, 211, 102, 0.3);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 30px;
  align-items: center;
  margin-top: 50px;
}

[data-theme="light"] .techkonnects-box {
  background: linear-gradient(135deg, rgba(37, 211, 102, 0.08), rgba(255, 255, 255, 0.9));
}

/* SECTION HEADERS */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px auto;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* DUAL CORE PILLARS */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

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

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-cyan), var(--primary-purple));
  opacity: 0;
  transition: var(--transition);
}

.pillar-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
}

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

.pillar-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(0, 240, 255, 0.1);
  color: var(--primary-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
}

.pillar-card-purple .pillar-icon {
  background: rgba(139, 92, 246, 0.1);
  color: var(--primary-purple);
}

.pillar-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.pillar-desc {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 0.98rem;
}

.pillar-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
}

.pillar-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.925rem;
  color: var(--text-main);
}

.pillar-list i {
  color: var(--primary-cyan);
}

/* SPECIALIZED TECH COURSES & MENTORSHIP */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card);
}

.course-img-wrapper {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.course-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.course-card:hover .course-img {
  transform: scale(1.06);
}

.course-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(7, 10, 17, 0.85);
  backdrop-filter: blur(10px);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-cyan);
  border: 1px solid rgba(0, 240, 255, 0.3);
}

[data-theme="light"] .course-tag {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary-cyan);
}

.course-content {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.course-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.course-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-grow: 1;
}

.course-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.spec-chip {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-code);
}

[data-theme="light"] .spec-chip {
  background: rgba(0, 0, 0, 0.04);
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
}

.course-mode {
  font-size: 0.825rem;
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* CAREER ACCELERATION INTERACTIVE SUITE */
.suite-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(16px);
}

.tab-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 10px;
}

[data-theme="light"] .tab-btn {
  background: rgba(0, 0, 0, 0.04);
}

.tab-btn:hover, .tab-btn.active {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(139, 92, 246, 0.15));
  border-color: var(--primary-cyan);
  color: var(--text-main);
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.15);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Interactive Resume Analyzer UI */
.resume-tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}

.tool-input-pane {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
}

.input-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
}

.code-textarea {
  width: 100%;
  height: 180px;
  background: rgba(7, 10, 17, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px;
  color: var(--text-main);
  font-family: var(--font-code);
  font-size: 0.85rem;
  resize: vertical;
  margin-bottom: 16px;
}

[data-theme="light"] .code-textarea {
  background: #F1F5F9;
  color: #0F172A;
}

.code-textarea:focus {
  outline: none;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.tool-output-pane {
  background: var(--bg-elevated);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 24px;
}

.score-display {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.score-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: conic-gradient(var(--primary-cyan) 85%, rgba(255, 255, 255, 0.1) 0%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.score-circle::before {
  content: '';
  position: absolute;
  width: 66px;
  height: 66px;
  border-radius: 50%;
  background: var(--bg-elevated);
}

.score-val {
  position: relative;
  z-index: 1;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-cyan);
}

.analysis-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.analysis-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  padding: 10px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
}

[data-theme="light"] .analysis-item {
  background: rgba(0, 0, 0, 0.03);
}

.analysis-item i.check { color: #10B981; }
.analysis-item i.warn { color: var(--accent-amber); }

/* PROJECT MATCHMAKER SHOWCASE */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
}

[data-theme="light"] .filter-btn {
  background: rgba(0, 0, 0, 0.04);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--primary-cyan);
  color: #070A11;
  font-weight: 600;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

[data-theme="light"] .filter-btn:hover, [data-theme="light"] .filter-btn.active {
  color: #FFFFFF;
}

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

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
}

.project-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-purple);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.project-tech {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* INTERACTIVE FEE & COURSE ESTIMATOR */
.estimator-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

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

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-select, .form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  font-family: var(--font-main);
}

.form-select:focus, .form-input:focus {
  outline: none;
  border-color: var(--primary-cyan);
}

.est-summary-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
}

.est-price-val {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary-cyan);
  margin: 16px 0;
}

/* HYDERABAD CENTER & HYBRID MODE */
.location-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.location-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-point {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.point-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0, 240, 255, 0.1);
  color: var(--primary-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.map-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  height: 360px;
  position: relative;
}

.map-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* FLOATING WHATSAPP WIDGET */
.whatsapp-widget {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 9999;
}

.wa-trigger {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--whatsapp-green);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  border: none;
}

.wa-trigger:hover {
  transform: scale(1.1);
  background: var(--whatsapp-hover);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
}

.wa-popup {
  position: absolute;
  bottom: 75px;
  right: 0;
  width: 340px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  display: none;
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.wa-popup.active {
  display: block;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.wa-header {
  background: rgba(18, 30, 54, 0.9);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-subtle);
  color: #FFF;
}

[data-theme="light"] .wa-header {
  background: #0F172A;
}

.wa-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--whatsapp-green);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-weight: bold;
}

.wa-body {
  padding: 20px;
}

.wa-bubble {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 0.875rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

[data-theme="light"] .wa-bubble {
  background: rgba(0, 0, 0, 0.04);
}

.wa-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.wa-option-btn {
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-main);
  font-size: 0.85rem;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.wa-option-btn:hover {
  background: var(--whatsapp-green);
  color: #FFF;
  border-color: var(--whatsapp-green);
}

/* FOOTER */
.footer {
  background: #04060C;
  border-top: 1px solid var(--border-subtle);
  padding: 80px 0 30px 0;
  margin-top: 60px;
  color: #F8FAFC;
}

[data-theme="light"] .footer {
  background: #0F172A;
}

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

.footer-brand p {
  color: #94A3B8;
  font-size: 0.9rem;
  margin: 16px 0;
  max-width: 320px;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #F8FAFC;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: #94A3B8;
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-cyan);
  transform: translateX(4px);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #64748B;
  font-size: 0.85rem;
}

/* RESPONSIVE MEDIA QUERIES */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-subtitle { margin: 0 auto 36px auto; }
  .hero-cta-group { justify-content: center; }
  .hero-stats { justify-content: center; }
  .pillars-grid, .courses-grid, .projects-grid, .estimator-box, .location-grid, .techkonnects-box { grid-template-columns: 1fr; }
  .resume-tool-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.3rem; }
  .mobile-menu-btn { display: block; }
  .nav-links {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: var(--bg-dark);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 40px;
    transition: var(--transition);
  }
  .nav-links.active { left: 0; }
  .float-card-1 { left: 10px; }
  .float-card-2 { right: 10px; }
}