/* css/main.css */
@import url('variables.css');

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

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

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

p {
  color: var(--text-secondary);
  font-weight: 400;
}

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

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Global Glow Background Elements */
.glow-mesh {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(140px);
  z-index: -1;
  pointer-events: none;
  opacity: var(--glow-opacity);
  transition: opacity var(--transition-normal);
}
.glow-primary {
  background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}
.glow-secondary {
  background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
  bottom: -200px;
  left: -200px;
}

/* Header / Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--header-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--header-border);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-dot {
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transition: width var(--transition-normal);
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}
.theme-toggle:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1100;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: all var(--transition-normal);
}
.hamburger.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Button UI Variants */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--border-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(var(--color-primary-rgb), 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(var(--color-primary-rgb), 0.4);
}
.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--card-bg);
  border-color: var(--card-border);
  color: var(--text-primary);
  box-shadow: var(--card-shadow);
}
.btn-secondary:hover {
  border-color: var(--text-tertiary);
  transform: translateY(-2px);
}

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

.btn-ghost {
  background: none;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 50px;
  background-color: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  color: var(--color-primary);
  margin-bottom: 16px;
}
.badge-secondary {
  background-color: rgba(var(--color-secondary-rgb), 0.1);
  border-color: rgba(var(--color-secondary-rgb), 0.2);
  color: var(--color-secondary);
}
.badge-accent {
  background-color: rgba(var(--color-accent-rgb), 0.1);
  border-color: rgba(var(--color-accent-rgb), 0.2);
  color: var(--color-accent);
}

/* Glassmorphic Cards */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  padding: 32px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.card:hover {
  transform: translateY(-5px);
  border-color: rgba(var(--color-primary-rgb), 0.2);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: 24px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Section Header */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px auto;
  position: relative;
}
.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-header p {
  font-size: 1.1rem;
}

/* Footer Section */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--card-border);
  padding: 80px 0 40px 0;
  margin-top: 100px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.footer-desc {
  max-width: 320px;
  font-size: 0.95rem;
}
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.footer-links a:hover {
  color: var(--text-primary);
}
.footer-socials {
  display: flex;
  gap: 16px;
}
.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.social-icon:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

/* Animations (Scroll & Hover) */
[data-fade-in] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
[data-fade-in].visible {
  opacity: 1;
  transform: translateY(0);
}

/* Forms controls */
.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}
.form-input {
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--card-border);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

/* Media Queries for Layouts */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: 40px 24px;
    gap: 24px;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    z-index: 999;
  }
  .nav-menu.open {
    transform: translateY(0);
  }
  .nav-actions {
    display: none;
  }
  .nav-actions.mobile-open {
    display: flex;
    margin-top: auto;
  }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 2rem; }
  .footer-grid { grid-template-columns: 1fr; }
}