/* ============================================
   Knixus Technologies - Root Website Styles
   Dark/Light Mode with CSS Variables
   ============================================ */

/* ===== Theme Variables ===== */

/* Light mode (default) */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #1a1a1a;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --border-color: #dee2e6;
  --card-bg: rgba(255, 255, 255, 0.95);
  --card-border: rgba(0, 0, 0, 0.05);
  --accent-primary: #667eea;
  --accent-secondary: #764ba2;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* Dark mode */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #334155;
  --card-bg: rgba(30, 41, 59, 0.95);
  --card-border: rgba(255, 255, 255, 0.05);
  --accent-primary: #818cf8;
  --accent-secondary: #a78bfa;
  --accent-gradient: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
}

/* ===== Base Styles ===== */

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

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

/* ===== Navbar ===== */

.navbar {
  background-color: var(--card-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 1050;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary) !important;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand i {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-logo {
  height: 32px;
  width: auto;
}

.navbar-icon {
  height: 28px;
  width: auto;
  vertical-align: middle;
}

.logo-dark {
  display: none;
}

[data-theme="dark"] .logo-light {
  display: none;
}

[data-theme="dark"] .logo-dark {
  display: block;
}

.nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--accent-primary) !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 80%;
}

.navbar-toggler {
  border-color: var(--border-color);
}

/* Products dropdown */
.dropdown-menu {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  min-width: 220px;
  backdrop-filter: blur(10px);
  z-index: 9999;
}

.dropdown-item {
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
  color: var(--text-primary);
  transition: background 0.15s;
}

.dropdown-item:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.dropdown-item strong {
  font-size: 0.88rem;
  display: block;
}

/* Suppress underline animation on dropdown toggle */
.nav-link.dropdown-toggle::after {
  display: none;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(156, 163, 175, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Theme toggle button */
.btn-link {
  border: none;
  background: transparent;
  cursor: pointer;
}

#theme-toggle-icon {
  font-size: 1.2rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

#theme-toggle-icon:hover {
  color: var(--accent-primary);
  transform: rotate(20deg);
}

/* ===== Hero Section ===== */

.hero-section {
  padding: 6rem 0;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--accent-gradient);
  opacity: 0.05;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-weight: 400;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

/* ===== Buttons ===== */

.btn-primary-gradient {
  background: var(--accent-gradient);
  color: white;
  border: none;
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: 8px;
  transition: var(--transition);
  box-shadow: var(--shadow);
  text-decoration: none;
  display: inline-block;
}

.btn-primary-gradient:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

.btn-outline-gradient {
  background: transparent;
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: 8px;
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
}

.btn-outline-gradient:hover {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===== Stats Bar ===== */

.stats-section {
  background-color: var(--bg-secondary);
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.stat-item {
  text-align: center;
  padding: 1rem;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ===== Feature Cards ===== */

.features-section {
  padding: 6rem 0;
  background-color: var(--bg-primary);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 4rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.feature-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2.5rem;
  height: 100%;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  background: var(--accent-gradient);
  color: white;
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.feature-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== CTA Section ===== */

.cta-section {
  padding: 6rem 0;
  background: var(--accent-gradient);
  color: white;
  text-align: center;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.cta-description {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
}

.btn-white {
  background: white;
  color: var(--accent-primary);
  border: none;
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
  text-decoration: none;
  display: inline-block;
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3);
  color: var(--accent-primary);
}

/* ===== About Page ===== */

.about-section {
  padding: 6rem 0;
}

.value-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 2rem;
  height: 100%;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.value-icon {
  font-size: 2.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.value-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.value-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Contact Page ===== */

.contact-section {
  padding: 6rem 0;
}

.contact-info {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: var(--shadow);
}

.contact-item {
  display: flex;
  align-items: start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-item:last-child {
  margin-bottom: 0;
}

.contact-item i {
  font-size: 1.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-top: 0.25rem;
}

.contact-item-content h5 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.contact-item-content p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.social-link {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1.25rem;
  transition: var(--transition);
}

.social-link:hover {
  background: var(--accent-gradient);
  color: white;
  transform: translateY(-4px);
}

/* Contact form */
.form-control, .form-select, .form-control:focus, .form-select:focus {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-control:focus, .form-select:focus {
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
  border-color: var(--accent-primary);
}

.form-label {
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

/* ===== Footer ===== */

.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 1.5rem;
  margin-top: auto;
}

.footer-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-logo {
  height: 40px;
  width: auto;
}

.hero-logo {
  height: 140px;
  width: auto;
  max-width: 400px;
}

.seqular-logo-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.seqular-logo {
  height: 156px;
  width: auto;
  max-width: 420px;
}

.hero-logo-wrap {
  display: flex;
  justify-content: center;
}

.footer-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 400px;
}

.footer-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  margin-top: 2rem;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-secondary);
  margin-bottom: 0;
  font-size: 0.875rem;
}

/* ===== Responsive Design ===== */

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .cta-title {
    font-size: 2rem;
  }

  .stat-number {
    font-size: 2rem;
  }

  .feature-card {
    margin-bottom: 1.5rem;
  }

  .value-card {
    margin-bottom: 1.5rem;
  }
}

/* ===== Animations ===== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* ===== OpenCode Brand Assets — theme switching ===== */
/* -light.svg = dark-colored logo → show on light backgrounds */
/* -dark.svg  = light-colored logo → show on dark backgrounds */
.oc-brand-light { display: inline-block; }
.oc-brand-dark  { display: none; }

[data-theme="dark"] .oc-brand-light { display: none; }
[data-theme="dark"] .oc-brand-dark  { display: inline-block; }