/* ================================================
   TAG Website - Modern Redesign
   ================================================ */

/* ------------------------------------------------
   CSS Variables / Design Tokens
   ------------------------------------------------ */
:root {
  /* Colors */
  --color-navy: #016EA2;
  --color-navy-dark: #00334d;
  --color-navy-light: #0288c7;
  --color-accent: #016EA2;
  --color-accent-light: #0288c7;
  --color-white: #FFFFFF;
  --color-off-white: #F8F9FA;
  --color-gray-100: #F1F3F5;
  --color-gray-200: #E9ECEF;
  --color-gray-300: #DEE2E6;
  --color-gray-500: #ADB5BD;
  --color-gray-700: #495057;
  --color-gray-900: #212529;
  
  /* Typography */
  --font-heading: 'Crimson Pro', Georgia, serif;
  --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

/* ------------------------------------------------
   Container
   ------------------------------------------------ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ------------------------------------------------
   Typography
   ------------------------------------------------ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-navy);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--space-md);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-accent);
  margin-top: var(--space-sm);
  border-radius: 2px;
}

.section-title--center {
  text-align: center;
}

.section-title--center::after {
  margin-left: auto;
  margin-right: auto;
}

.section-title--light {
  color: var(--color-white);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-gray-700);
  margin-bottom: var(--space-lg);
  max-width: 600px;
}

.section-subtitle--light {
  color: rgba(255, 255, 255, 0.85);
}

.section-title--center + .section-subtitle {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

/* ------------------------------------------------
   Buttons
   ------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(211, 84, 0, 0.3);
}

.btn--primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(211, 84, 0, 0.4);
}

/* ------------------------------------------------
   Header
   ------------------------------------------------ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-navy);
  box-shadow: var(--shadow-md);
  padding: var(--space-sm) 0;
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-tag {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-white);
}

.logo-text {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  display: none;
}

@media (min-width: 640px) {
  .logo-text {
    display: block;
  }
}

.logo-img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
}

@media (min-width: 640px) {
  .logo-img {
    height: 50px;
  }
}

.header__contact {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 600;
  color: var(--color-white);
}

.header__contact .icon {
  width: 18px;
  height: 18px;
  color: var(--color-white);
}

.header__contact a:hover {
  color: var(--color-gray-200);
}

/* ------------------------------------------------
   Hero Section
   ------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(80px + var(--space-xl)) 0 var(--space-xl);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(135deg, rgba(0, 51, 77, 0.6) 0%, rgba(0, 51, 77, 0.5) 100%),
    url('../images/hero-section.jpg');
  background-size: cover;
  background-position: center;
  z-index: -2;
}

.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 30% 20%, rgba(0, 51, 77, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(0, 51, 77, 0.3) 0%, transparent 50%);
  z-index: -1;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: -1;
}

.hero__content {
  max-width: 800px;
  animation: fadeInUp 1s ease forwards;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  line-height: 1.15;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-lg);
  max-width: 600px;
}

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

/* ------------------------------------------------
   About Section
   ------------------------------------------------ */
.about {
  padding: var(--space-2xl) 0;
  background: var(--color-white);
}

.about .container {
  display: grid;
  gap: var(--space-xl);
}

.about__grid {
  display: grid;
  gap: var(--space-lg);
  align-items: center;
}

@media (min-width: 768px) {
  .about__grid {
    grid-template-columns: 1fr 1.2fr;
  }
}

.about__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
  .about .container {
    grid-template-columns: 1fr;
  }
}

.about__text {
  font-size: 1.125rem;
  color: var(--color-gray-700);
  margin-bottom: var(--space-md);
}

.about__text:last-of-type {
  margin-bottom: 0;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.stat {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-gray-100);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.stat__number {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.stat__label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-gray-700);
  margin-top: var(--space-xs);
}

/* ------------------------------------------------
   Industries Section
   ------------------------------------------------ */
.industries {
  padding: var(--space-2xl) 0;
  background: var(--color-off-white);
}

.industries__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
}

.industry-card {
  background: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--color-gray-200);
}

.industry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.industry-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  border-radius: var(--radius-md);
}

.industry-card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-white);
}

.industry-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
}

/* ------------------------------------------------
   Services & Products Section
   ------------------------------------------------ */
.services-products {
  padding: var(--space-2xl) 0;
  background: var(--color-white);
}

.services-products__grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .services-products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.sp-card {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.sp-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(211, 84, 0, 0.2) 0%, transparent 70%);
  transform: translate(50%, -50%);
}

.sp-card__title {
  font-size: 1.5rem;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  position: relative;
}

.sp-card__title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  margin-top: var(--space-sm);
  border-radius: 2px;
}

.sp-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.sp-card__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
}

.sp-card__bullet {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-top: 0.5rem;
}

/* ------------------------------------------------
   Revolution Section
   ------------------------------------------------ */
.revolution {
  padding: var(--space-2xl) 0;
  background: var(--color-off-white);
  position: relative;
}

.revolution__grid {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 900px) {
  .revolution__grid {
    grid-template-columns: 1fr 1fr;
  }
}

.revolution__content {
  max-width: 600px;
}

.revolution__images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.revolution__img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.revolution__img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 900px) {
  .revolution__images {
    grid-template-columns: 1fr;
  }
  
  .revolution__img {
    height: 180px;
  }
}

.revolution__text {
  font-size: 1.25rem;
  color: var(--color-gray-700);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.revolution__highlights {
  display: grid;
  gap: var(--space-sm);
}

.highlight {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.0625rem;
  color: var(--color-navy);
  font-weight: 500;
}

.highlight__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

/* ------------------------------------------------
   Contact Section
   ------------------------------------------------ */
.contact {
  padding: var(--space-2xl) 0;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(ellipse at 20% 50%, rgba(211, 84, 0, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(19, 45, 82, 0.3) 0%, transparent 50%);
}

.contact .container {
  position: relative;
  z-index: 1;
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.contact-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.contact-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  border-radius: 50%;
}

.contact-card__icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-white);
}

.contact-card h3 {
  font-size: 1.125rem;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.contact-card p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9375rem;
}

.contact-card p.small {
  font-size: 0.8125rem;
  opacity: 0.7;
  margin-top: var(--space-xs);
}

.contact-card a:hover {
  color: var(--color-accent-light);
}

.contact__service-area {
  text-align: center;
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact__service-area strong {
  color: var(--color-white);
  font-weight: 700;
}

/* ------------------------------------------------
   Footer
   ------------------------------------------------ */
.footer {
  background: var(--color-navy-dark);
  padding: var(--space-lg) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__inner {
  text-align: center;
}

.footer__brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  color: var(--color-white);
  font-weight: 500;
}

.footer__brand .logo-tag {
  font-size: 1.25rem;
  -webkit-text-fill-color: var(--color-white);
  background: none;
}

.footer-logo {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer__address {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  margin-bottom: var(--space-xs);
}

.footer__copyright {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8125rem;
}

/* ------------------------------------------------
   Animations - Fade In
   ------------------------------------------------ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animations for grid items */
.industries__grid .industry-card:nth-child(1) { transition-delay: 0ms; }
.industries__grid .industry-card:nth-child(2) { transition-delay: 80ms; }
.industries__grid .industry-card:nth-child(3) { transition-delay: 160ms; }
.industries__grid .industry-card:nth-child(4) { transition-delay: 240ms; }
.industries__grid .industry-card:nth-child(5) { transition-delay: 320ms; }
.industries__grid .industry-card:nth-child(6) { transition-delay: 400ms; }
.industries__grid .industry-card:nth-child(7) { transition-delay: 480ms; }

.contact__grid .contact-card:nth-child(1) { transition-delay: 0ms; }
.contact__grid .contact-card:nth-child(2) { transition-delay: 100ms; }
.contact__grid .contact-card:nth-child(3) { transition-delay: 200ms; }
.contact__grid .contact-card:nth-child(4) { transition-delay: 300ms; }

/* ------------------------------------------------
   Responsive Adjustments
   ------------------------------------------------ */
@media (max-width: 640px) {
  .about__stats {
    grid-template-columns: 1fr;
  }
  
  .stat {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-md);
    text-align: left;
  }
  
  .stat__number {
    min-width: 80px;
  }
  
  .stat__label {
    margin-top: 0;
  }
  
  .hero {
    min-height: auto;
    padding: calc(80px + var(--space-lg)) 0 var(--space-xl);
  }
}