/* AspireGTM - Main Stylesheet */

/* ===== CSS Variables ===== */
:root {
  /* Brand Colors */
  --color-primary: #0B0D17;
  --color-white: #FFFFFF;
  --color-slate: #F5F6FA;
  --color-accent: #00C2FF;
  --color-accent-hover: #00A8E0;
  --color-gray: #6B7280;
  --color-border: #E5E7EB;
  
  /* Typography */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-primary);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-gray);
}

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

a:hover {
  color: var(--color-accent-hover);
}

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

.section {
  padding: var(--spacing-3xl) 0;
}

.section-alt {
  background-color: var(--color-slate);
}

/* ===== Header & Navigation ===== */
.header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--color-primary);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-primary);
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a1d2e 100%);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(0, 194, 255, 0.1) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
}

.hero p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
}

.hero-tagline {
  font-size: 1rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
  font-family: var(--font-heading);
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 194, 255, 0.2);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* ===== Grid Layouts ===== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ===== Cards ===== */
.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.card-accent {
  border-top: 4px solid var(--color-accent);
}

/* ===== Module Cards (Collapsible) ===== */
.module-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
}

.module-header {
  padding: var(--spacing-lg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-slate);
  transition: var(--transition);
}

.module-header:hover {
  background-color: #e8eaf0;
}

.module-header h3 {
  margin: 0;
}

.module-toggle {
  font-size: 1.5rem;
  color: var(--color-accent);
  transition: var(--transition);
}

.module-content {
  padding: var(--spacing-lg);
  display: none;
}

.module-content.active {
  display: block;
}

.module-subsection {
  margin-bottom: var(--spacing-lg);
}

.module-subsection h4 {
  color: var(--color-accent);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-sm);
}

.module-subsection ul {
  list-style: none;
  padding-left: 0;
}

.module-subsection li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-md);
  position: relative;
}

.module-subsection li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* ===== Case Studies ===== */
.case-card {
  background: linear-gradient(135deg, var(--color-slate) 0%, var(--color-white) 100%);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-accent);
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: var(--spacing-md);
}

.case-company {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
}

.case-industry {
  font-size: 0.875rem;
  color: var(--color-gray);
  font-weight: 500;
}

.case-result {
  font-size: 1.125rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== Forms ===== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.1);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* ===== Footer ===== */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.footer p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-sm);
}

.footer-tagline {
  color: var(--color-accent);
  font-weight: 600;
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .hero h1 { font-size: 2.5rem; }
  .hero p { font-size: 1.125rem; }
  
  .section { padding: var(--spacing-xl) 0; }
  
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-md);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
  }
}