/* ==========================================================================
   Keyivigo Enterprise Website Design System & Styling
   ========================================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* --- Custom Properties (CSS Variables) --- */
:root {
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Colors */
  --bg-primary: #080B11;
  --bg-secondary: #0F1420;
  --bg-tertiary: #171E30;
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --accent-primary: #00F2FE;
  --accent-secondary: #4FACFE;
  --accent-purple: #8B5CF6;
  --accent-pink: #EC4899;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #00F2FE 0%, #4FACFE 100%);
  --grad-royal: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  --grad-sunset: linear-gradient(135deg, #F43F5E 0%, #EC4899 100%);
  --grad-dark-card: linear-gradient(145deg, rgba(23, 30, 48, 0.4) 0%, rgba(15, 20, 32, 0.6) 100%);
  --grad-glow: radial-gradient(circle, rgba(0, 242, 254, 0.15) 0%, rgba(8, 11, 17, 0) 70%);

  /* UI Tokens */
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --border-radius-full: 9999px;
  
  --border-glass: 1px solid rgba(255, 255, 255, 0.08);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  --max-width: 1200px;
}

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

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

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

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

ul {
  list-style: none;
}

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

button, input, textarea {
  font-family: inherit;
  background: none;
  border: none;
  color: inherit;
}

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

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-alt {
  background: var(--grad-royal);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Background Ambient Glow --- */
.ambient-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.08) 0%, rgba(79, 172, 254, 0.03) 50%, rgba(0,0,0,0) 70%);
  top: -100px;
  right: -100px;
  z-index: 0;
  pointer-events: none;
  filter: blur(80px);
}

.ambient-glow-2 {
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, rgba(236, 72, 153, 0.02) 50%, rgba(0,0,0,0) 70%);
  bottom: 20%;
  left: -100px;
  z-index: 0;
  pointer-events: none;
  filter: blur(80px);
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--grad-primary);
  color: #040609;
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 242, 254, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
}

/* --- Header & Nav --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: var(--transition-smooth);
  border-bottom: 1px solid transparent;
}

header.scrolled {
  background: rgba(8, 11, 17, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: var(--border-glass);
  padding: 12px 0;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
  transition: var(--transition-smooth);
}

header.scrolled .container {
  padding-top: 8px;
  padding-bottom: 8px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo span {
  font-size: 28px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--grad-primary);
  transition: var(--transition-smooth);
}

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

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 110;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-smooth);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 140px;
  padding-bottom: 60px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-content p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 520px;
}

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

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual-inner {
  position: relative;
  width: 100%;
  max-width: 500px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: var(--border-glass);
  box-shadow: var(--shadow-glass);
  background: rgba(255, 255, 255, 0.02);
}

.hero-visual img {
  border-radius: var(--border-radius-lg);
  transition: var(--transition-slow);
}

.hero-visual::before {
  content: '';
  position: absolute;
  width: 110%;
  height: 110%;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.1) 0%, rgba(0,0,0,0) 60%);
  z-index: -1;
}

/* --- Stats Bar --- */
.stats {
  background: rgba(255, 255, 255, 0.01);
  border-top: var(--border-glass);
  border-bottom: var(--border-glass);
  padding: 40px 0;
  backdrop-filter: blur(10px);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item h3 {
  font-size: 40px;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-item p {
  color: var(--text-secondary);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* --- Services / Features Section --- */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-header .tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-primary);
  border-radius: var(--border-radius-full);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.section-header h2 {
  font-size: 44px;
  margin-bottom: 20px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 16px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--grad-dark-card);
  border: var(--border-glass);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.05) 0%, rgba(79, 172, 254, 0.01) 100%);
  opacity: 0;
  transition: var(--transition-smooth);
  z-index: -1;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 242, 254, 0.3);
  box-shadow: 0 12px 40px rgba(0, 242, 254, 0.1);
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--accent-primary);
  margin-bottom: 28px;
  transition: var(--transition-smooth);
}

.feature-card:hover .feature-icon {
  background: var(--grad-primary);
  color: #040609;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

.feature-card h3 {
  font-size: 22px;
  margin-bottom: 16px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

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

.about-visual {
  position: relative;
}

.about-visual-inner {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: var(--border-glass);
  box-shadow: var(--shadow-glass);
  background: rgba(255, 255, 255, 0.01);
}

.about-visual-badge {
  position: absolute;
  bottom: 30px;
  right: -20px;
  background: rgba(15, 20, 32, 0.85);
  border: var(--border-glass);
  backdrop-filter: blur(12px);
  padding: 20px 24px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-glass);
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 2;
}

.about-visual-badge .number {
  font-size: 32px;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--accent-primary);
}

.about-visual-badge .text {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 600;
  line-height: 1.3;
}

.about-content h2 {
  font-size: 44px;
  margin-bottom: 24px;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 16px;
}

.about-points {
  margin-bottom: 32px;
}

.about-point {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.about-point-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0, 242, 254, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 12px;
  margin-top: 4px;
  flex-shrink: 0;
}

.about-point h4 {
  font-size: 16px;
  margin-bottom: 4px;
}

.about-point p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* --- Interactive Tabs / Portfolio --- */
.portfolio-tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

.tab-btn {
  padding: 10px 24px;
  border-radius: var(--border-radius-full);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.02);
  border: var(--border-glass);
  transition: var(--transition-smooth);
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

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

.portfolio-item {
  position: relative;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: var(--border-glass);
  aspect-ratio: 4/3;
  cursor: pointer;
  z-index: 1;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(0deg, rgba(8, 11, 17, 0.9) 0%, rgba(8, 11, 17, 0.2) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  opacity: 0;
  transition: var(--transition-smooth);
}

.portfolio-item:hover img {
  transform: scale(1.08);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay span {
  font-size: 12px;
  color: var(--accent-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.portfolio-overlay h3 {
  font-size: 20px;
  font-weight: 700;
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: stretch;
}

.contact-info {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-info-text h2 {
  font-size: 44px;
  margin-bottom: 24px;
}

.contact-info-text p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 20px;
}

.contact-detail-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--accent-primary);
}

.contact-detail-content h4 {
  font-size: 14px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.contact-detail-content p {
  font-size: 16px;
  font-weight: 600;
}

.contact-form-container {
  background: var(--grad-dark-card);
  border: var(--border-glass);
  border-radius: var(--border-radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-glass);
  backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px 20px;
  border-radius: var(--border-radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: var(--border-glass);
  font-size: 15px;
  transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-primary);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
}

.form-group textarea {
  resize: none;
  height: 140px;
}

.form-status {
  margin-top: 16px;
  font-size: 14px;
  display: none;
}

.form-status.success {
  display: block;
  color: #10B981;
}

.form-status.error {
  display: block;
  color: #EF4444;
}

/* --- Footer --- */
footer {
  background-color: #04060A;
  border-top: var(--border-glass);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
  max-width: 280px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition-smooth);
}

.social-link:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 16px;
  margin-bottom: 24px;
  position: relative;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--grad-primary);
}

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

.footer-col a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-col a:hover {
  color: var(--text-primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: var(--border-glass);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 13px;
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a:hover {
  color: var(--text-secondary);
}

/* --- Scroll Animations (Triggered by JS) --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive Adaptations --- */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 52px;
  }
  .features-grid,
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  .hero {
    padding-top: 120px;
    padding-bottom: 40px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-btns {
    justify-content: center;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .features-grid,
  .portfolio-grid,
  .contact-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-grid {
    gap: 40px;
  }
  .about-visual {
    order: 2;
  }
  .menu-toggle {
    display: flex;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: rgba(8, 11, 17, 0.95);
    backdrop-filter: blur(20px);
    border-left: var(--border-glass);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    transition: var(--transition-smooth);
    z-index: 105;
  }
  .nav-links.active {
    right: 0;
  }
  header.active-menu .menu-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  header.active-menu .menu-toggle span:nth-child(2) {
    opacity: 0;
  }
  header.active-menu .menu-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }
}