/* =========================================================================
   GrowthSpark Styles
   ========================================================================= */

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

/* CSS Variables */
:root {
  /* Colors */
  --color-bg-base: #0a0a0a;
  --color-bg-surface: #121212;
  --color-bg-surface-light: #1e1e1e;

  --color-primary: #00E676;
  /* Vibrant Accent Green */
  --color-primary-hover: #00C853;
  --color-primary-glow: rgba(0, 230, 118, 0.4);

  --color-text-main: #f5f5f5;
  --color-text-muted: #a0a0a0;

  /* Typography */
  --font-family-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: 16px;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;

  /* Layout */
  --container-width: 1200px;
  --border-radius: 12px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-family-sans);
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

ul {
  list-style: none;
}

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

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

span {
  color: var(--color-primary);
}

/* Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-bg-base);
  padding: 8px 16px;
  z-index: 1000;
  font-weight: 600;
  border-bottom-right-radius: var(--border-radius);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-xxl) 0;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  font-size: 1rem;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg-base);
  box-shadow: 0 4px 14px var(--color-primary-glow);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--color-primary-glow);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: rgba(0, 230, 118, 0.1);
  transform: translateY(-3px);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
  display: block;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  transform: translateX(0);
  width: 100%;
  background-color: rgba(30, 30, 30, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  border-radius: 0;
}

.header.scrolled {
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 95%;
  max-width: 1100px;
  background-color: rgba(20, 20, 20, 0.85);
  border-radius: 50px;
  border: 1px solid rgba(0, 230, 118, 0.25);
  border-bottom: 1px solid rgba(0, 230, 118, 0.25);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), inset 0 0 15px rgba(0, 230, 118, 0.05);
  padding: 0 10px;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: height 0.4s;
}

.header.scrolled .navbar {
  height: 65px;
}

.logo img {
  height: 55px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.1));
  transition: height 0.4s;
}

.header.scrolled .logo img {
  height: 40px;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.nav-link {
  font-weight: 500;
  position: relative;
  letter-spacing: 0.5px;
  padding: 8px 16px;
  border-radius: 20px;
  transition: all 0.3s ease;
  color: var(--color-text-main);
}

.nav-link:not(.btn-primary):hover {
  background-color: rgba(0, 230, 118, 0.15);
  color: var(--color-primary);
  box-shadow: inset 0 0 10px rgba(0, 230, 118, 0.1);
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.hamburger {
  display: block;
  width: 25px;
  height: 2px;
  margin: 6px auto;
  background-color: var(--color-text-main);
  transition: all var(--transition-normal);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
  background-image: linear-gradient(rgba(10, 10, 10, 0.5), rgba(10, 10, 10, 0.95)), url('assets/hero_bg.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-text {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero-text p {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-inline: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.glow-effect {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 230, 118, 0.1) 0%, rgba(10, 10, 10, 0) 60%);
  z-index: 1;
  pointer-events: none;
}

/* Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.service-card {
  background: var(--color-bg-surface);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
  border-color: rgba(0, 230, 118, 0.3);
}

.service-image {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.service-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent 50%, var(--color-bg-surface) 100%);
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.service-card:hover .service-image img {
  transform: scale(1.08);
}

.service-icon {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-surface-light);
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  transition: background-color var(--transition-normal);
}

.service-card:hover .service-icon {
  background: rgba(0, 230, 118, 0.05);
}

.service-details {
  padding: var(--spacing-lg);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.service-details p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  flex-grow: 1;
}

.service-features li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: var(--color-text-main);
  font-weight: 500;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: -2px;
  color: var(--color-bg-base);
  background-color: var(--color-primary);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: bold;
}

/* About Section */
.about {
  background-color: var(--color-bg-surface);
  position: relative;
}

.about-lead {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.about-item {
  background: var(--color-bg-base);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.03);
  transition: transform var(--transition-normal);
}

.about-item:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 230, 118, 0.2);
}

.about-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.about-item p {
  color: var(--color-text-muted);
}

/* CTA Section */
.cta {
  background: linear-gradient(135deg, rgba(0, 230, 118, 0.1) 0%, var(--color-bg-surface-light) 100%);
  border-top: 1px solid rgba(0, 230, 118, 0.2);
  border-bottom: 1px solid rgba(0, 230, 118, 0.2);
  position: relative;
  overflow: hidden;
}

.cta>.container {
  position: relative;
  z-index: 2;
}

.cta-btn {
  margin-top: var(--spacing-md);
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.contact-info,
.contact-form {
  background: var(--color-bg-surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.info-item {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
}

.info-item strong {
  color: var(--color-primary);
  margin-bottom: 6px;
  font-size: 1.1rem;
}

.info-item a,
.info-item span {
  color: var(--color-text-main);
  font-size: 1.05rem;
}

.info-item a:hover {
  color: var(--color-primary);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: 10px;
  font-weight: 500;
  color: var(--color-text-main);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg-base);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--color-text-main);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.2);
}

/* Footer */
.footer {
  background: var(--color-bg-base);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-brand p {
  margin-top: var(--spacing-md);
  color: var(--color-text-muted);
  max-width: 320px;
}

.footer-links h4,
.footer-social h4 {
  color: var(--color-text-main);
  margin-bottom: var(--spacing-md);
}

.footer-links ul li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--color-text-muted);
}

.footer-links a:hover {
  color: var(--color-primary);
  padding-left: 5px;
}

.social-icons {
  display: flex;
  gap: 16px;
  margin-top: var(--spacing-md);
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-bg-surface);
  color: var(--color-text-main);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-fast);
}

.social-icons a:hover {
  background: var(--color-primary);
  color: var(--color-bg-base);
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 230, 118, 0.3);
}

.footer-bottom {
  text-align: center;
  padding: var(--spacing-md) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Animations & Interactivity */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}

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

/* Responsive Design */
@media (max-width: 992px) {
  .hero-text h1 {
    font-size: 3rem;
  }

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

  .contact-info {
    order: 2;
  }

  .contact-form {
    order: 1;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
    margin-bottom: var(--spacing-md);
  }
}

@media (max-width: 768px) {
  .navbar {
    position: relative;
  }

  .mobile-toggle {
    display: block;
    z-index: 101;
  }

  .mobile-toggle.active .hamburger:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .mobile-toggle.active .hamburger:nth-child(2) {
    opacity: 0;
  }

  .mobile-toggle.active .hamburger:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .nav-menu {
    position: fixed;
    top: 0;
    left: 100%;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg-base);
    flex-direction: column;
    justify-content: center;
    transition: left var(--transition-normal);
    z-index: 100;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-link {
    font-size: 1.5rem;
  }

  .nav-link:not(.btn-primary)::after {
    display: none;
  }

  .hero-buttons {
    flex-direction: column;
    padding: 0 var(--spacing-lg);
  }

  .hero-text p {
    font-size: 1.1rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-brand p {
    margin: var(--spacing-md) auto;
  }

  .social-icons {
    justify-content: center;
  }

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