/* Custom Styles for Thắng Media - Optimized Version */

/* Root Variables */
:root {
  --primary-color: #f4623a;
  --secondary-color: #6c757d;
  --white: #fff;
  --dark: #212529;
  --light-gray: #f8f9fa;
  --text-muted: #6c757d;
}

/* Global Styles */
body {
  font-family: 'Merriweather', serif;
  line-height: 1.6;
}

/* Navigation */
.navbar {
  transition: all 0.3s ease;
}

.navbar-shrink {
  padding-top: 0.5rem !important;
  padding-bottom: 0.5rem !important;
  background-color: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
}

/* Masthead */
.masthead {
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../assets/img/bg-masthead.jpg');
  background-size: cover;
  background-position: center;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

/* Dividers */
.divider {
  height: 0.25rem;
  max-width: 3.25rem;
  background-color: var(--primary-color);
  margin: 1.5rem auto;
}

.divider-light {
  background-color: var(--white);
}

/* Portfolio */
.portfolio-box {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.portfolio-box:hover {
  transform: scale(1.02);
}

.portfolio-box-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(rgba(244, 98, 58, 0.95), rgba(229, 90, 43, 0.95));
  color: white;
  padding: 1.5rem;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.portfolio-box:hover .portfolio-box-caption {
  transform: translateY(0);
}

/* Software Icons */
.software-icons {
  gap: 1rem;
}

.software-icon {
  width: 60px;
  height: 60px;
  object-fit: contain;
  transition: transform 0.3s ease;
  filter: grayscale(100%);
}

.software-icon:hover {
  transform: scale(1.1);
  filter: grayscale(0%) brightness(1.1);
  box-shadow: 0 4px 12px rgba(244, 98, 58, 0.3);
}

/* Buttons */
.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  transition: all 0.3s ease;
}

.btn-light:hover {
  background-color: #f8f9fa;
  border-color: #e9ecef;
  transform: translateY(-2px);
}

.btn-primary:hover {
  background-color: #e55a2b;
  border-color: #e55a2b;
  transform: translateY(-2px);
}

/* Modal Optimizations */
.modal-xl {
  max-width: 90vw;
}

.video-modal {
  background: #000;
}

/* Responsive Design */
@media (max-width: 768px) {
  .masthead h1 {
    font-size: 2.5rem;
  }
  
  .software-icon {
    width: 50px;
    height: 50px;
  }
  
  .portfolio-box-caption {
    padding: 1rem;
  }
}

/* Loading States */
.loading-hidden {
  display: none !important;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Performance Optimizations */
img {
  max-width: 100%;
  height: auto;
}

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

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