/* ==========================================================================
   SciEtech Modern Global Redesign CSS
   ========================================================================== */

/* 1. Design Tokens (Variables) */
:root {
  /* Brand Colors extracted from legacy CSS and modernized */
  --color-primary: #0891b2; /* Modern Teal/Cyan */
  --color-primary-light: #06b6d4;
  --color-primary-dark: #164e63;
  
  --color-accent: #e11d48; /* Modern Red */
  --color-accent-light: #f43f5e;
  
  --color-secondary: #16a34a; /* Modern Green */
  
  /* Neutral Colors */
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text-main: #0f172a;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  
  /* Typography */
  --font-family-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-heading: 'Outfit', 'Inter', system-ui, sans-serif;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-pill: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. Global Resets & Base Styles */
* {
  box-sizing: border-box;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.2;
  margin-top: 0;
}

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

a:hover {
  color: var(--color-primary-light);
}

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

/* 3. Utilities */
.glass-panel {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-glass);
}

.text-gradient {
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-image: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
}

.text-gradient-accent {
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-image: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
}

/* 4. Buttons */
.btn-modern {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-family-sans);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-pill);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-modern--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff !important;
  box-shadow: 0 4px 14px 0 rgba(8, 145, 178, 0.39);
}

.btn-modern--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(8, 145, 178, 0.23);
  color: #fff;
}

.btn-modern--accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: #fff !important;
  box-shadow: 0 4px 14px 0 rgba(225, 29, 72, 0.39);
}

.btn-modern--accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(225, 29, 72, 0.23);
  color: #fff;
}

.btn-modern--outline {
  background: transparent;
  color: var(--color-primary) !important;
  border: 2px solid var(--color-primary);
}

.btn-modern--outline:hover {
  background: var(--color-primary);
  color: #fff !important;
}

/* 5. Header Redesign (Overrides header2.php) */
.site-header {
  position: relative;
  z-index: 1000;
}

.header-top-modern {
  background-color: var(--color-text-main);
  color: #fff;
  padding: 0.5rem 0;
  font-size: 0.875rem;
}

.header-top-modern .contact-info {
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.header-top-modern .contact-info li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #cbd5e1;
}

.header-top-modern .social-menu {
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.header-top-modern .social-menu a {
  color: #cbd5e1;
  transition: color var(--transition-fast);
}

.header-top-modern .social-menu a:hover {
  color: var(--color-primary-light);
}

.header-bottom-modern {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  transition: all var(--transition-normal);
}

.header-bottom-modern .tg-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.header-bottom-modern .logo-image img {
  max-height: 40px;
}

/* Modern Navigation */
.main-navigation-modern ul {
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.main-navigation-modern > ul > li {
  position: relative;
}

.main-navigation-modern > ul > li > a {
  font-family: var(--font-family-heading);
  font-weight: 600;
  color: var(--color-text-main);
  text-transform: capitalize;
  padding: 0.5rem 0;
  display: block;
}

.main-navigation-modern > ul > li > a:hover,
.main-navigation-modern > ul > li.active > a {
  color: var(--color-primary);
}

/* Dropdown */
.main-navigation-modern ul.sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-surface);
  min-width: 200px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0.5rem 0;
}

.main-navigation-modern > ul > li:hover > ul.sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.main-navigation-modern ul.sub-menu li a {
  padding: 0.75rem 1.5rem;
  color: var(--color-text-muted);
  font-weight: 500;
  display: block;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.main-navigation-modern ul.sub-menu li a:hover {
  background: var(--color-bg);
  color: var(--color-primary);
}

/* 6. Footer Redesign */
.footer-modern {
  background-color: var(--color-text-main);
  color: #fff;
  padding: 4rem 0 0 0;
}

.footer-modern .widget-title {
  color: #fff;
  font-family: var(--font-family-heading);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.footer-modern .widget-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
}

.footer-modern a {
  color: #cbd5e1;
  transition: color var(--transition-fast);
}

.footer-modern a:hover {
  color: var(--color-primary-light);
  padding-left: 0.25rem;
}

.footer-modern .footer-bottom {
  background-color: rgba(0,0,0,0.2);
  padding: 1.5rem 0;
  margin-top: 3rem;
  text-align: center;
  color: #94a3b8;
  font-size: 0.875rem;
}

/* Newsletter Block */
.newsletter-modern {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 4rem 0;
  color: #fff;
  text-align: center;
}

.newsletter-modern h2 {
  color: #fff;
  margin-bottom: 1rem;
}

.newsletter-modern .news-input {
  border: none;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-pill) 0 0 var(--radius-pill);
  width: 100%;
  max-width: 400px;
  outline: none;
  font-family: var(--font-family-sans);
}

.newsletter-modern .news-btn {
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 1rem 2rem;
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.newsletter-modern .news-btn:hover {
  background: var(--color-accent-light);
}

/* 7. Utilities & Helpers */
.section-modern {
  padding: 5rem 0;
}

.section-modern--bg {
  background-color: var(--color-surface);
}

.section-title-modern {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title-modern .badge {
  display: inline-block;
  padding: 0.25rem 1rem;
  background: rgba(8, 145, 178, 0.1);
  color: var(--color-primary);
  font-weight: 600;
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title-modern h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-title-modern p {
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.125rem;
}

/* Flex Grid Helpers */
.modern-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}