/* ==========================================================================
   ThreeStepTech — Shared Base Styles
   Reset, typography, and foundational styles used by all sites.
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

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

/* Subtle grain texture overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: 9999;
}

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

ul {
  list-style: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.text-primary {
  color: var(--color-primary);
}

.section {
  position: relative;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-section) var(--spacing-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  font-size: var(--font-size-h2);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--font-size-body);
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius-pill);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-background);
  box-shadow: var(--glow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-primary-intense);
}

.btn-secondary {
  background: var(--glass-bg-button);
  backdrop-filter: var(--glass-blur-button);
  -webkit-backdrop-filter: var(--glass-blur-button);
  color: var(--color-text);
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
  background: rgba(40, 40, 40, 0.8);
  border-color: var(--glass-border-hover);
  box-shadow: var(--glow-complementary);
  transform: translateY(-2px);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
  transition: background var(--transition-medium);
}

.header.scrolled {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  z-index: 1001;
}

.logo {
  height: 38px;
  width: auto;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
}

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

.nav-link {
  font-size: var(--font-size-small);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-medium);
}

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

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

.nav-link--cta {
  background-color: var(--color-primary);
  color: var(--color-background);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--border-radius-pill);
  box-shadow: var(--glow-primary);
}

.nav-link--cta::after {
  display: none;
}

.nav-link--cta:hover {
  color: var(--color-background);
  transform: scale(1.05);
}

/* Mobile Navigation Toggle */
.nav-toggle {
  display: none;
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 1001;
}

.hamburger {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: var(--color-text);
  transition: transform var(--transition-medium);
}

.hamburger::before {
  transform: translateY(-8px);
}

.hamburger::after {
  transform: translateY(8px);
}

.nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--glass-border);
  padding: var(--spacing-section) 0 var(--spacing-lg);
  position: relative;
  z-index: 100;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.footer-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-xl);
  padding-bottom: var(--spacing-section);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  height: 28px;
  width: auto;
  margin-bottom: var(--spacing-md);
}

.footer-tagline {
  color: var(--color-muted);
  font-size: var(--font-size-small);
}

.footer-links {
  display: flex;
  gap: var(--spacing-2xl);
}

.footer-column h4 {
  font-size: var(--font-size-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-column a {
  font-size: var(--font-size-small);
  color: var(--color-muted);
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--color-primary);
}

.footer-column:nth-child(2) a:hover {
  color: var(--color-complementary);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer-bottom p {
  font-size: var(--font-size-small);
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   Form Styles
   -------------------------------------------------------------------------- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--glass-bg-light);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-muted);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2399A1AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: var(--spacing-xl);
}

.form-group select option {
  background-color: #1a0a2e;
  color: var(--color-text);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --------------------------------------------------------------------------
   Glass Card Component
   -------------------------------------------------------------------------- */
.glass-card {
  background: var(--glass-bg-light);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: var(--spacing-xl);
  transition: transform var(--transition-medium), border-color var(--transition-medium), box-shadow var(--transition-medium);
}

.glass-card:hover {
  border-color: var(--glass-border-hover);
}

/* --------------------------------------------------------------------------
   Responsive — Shared Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    transform: translateX(100%);
    transition: transform var(--transition-medium);
  }

  .nav-menu.active {
    transform: translateX(0);
  }

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

  .nav-link--cta {
    font-size: 1rem;
    padding: var(--spacing-sm) var(--spacing-lg);
  }

  .section-container {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .footer-main {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-brand {
    max-width: 100%;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-xl);
    align-items: center;
  }

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

@media (max-width: 480px) {
  .logo {
    height: 29px;
  }
}