/* css/main.css */

/* Header Scroll Effects */
header {
  background-color: transparent;
  box-shadow: none;
  transition: background-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out, transform 0.4s ease-in-out;
}

header.scrolled {
  background-color: rgba(249, 250, 251, 0.85); /* surface with alpha */
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

/* Hide header when detail view is active */
body.detail-view-active header:not(.cs-header) {
    transform: translateY(-100%);
}

/* Utilities */
.bg-secondary { background-color: #ffffff; }
.text-accent { color: #ec4899; }
.bg-accent { background-color: #6366f1; }
.text-secondary { color: #374151; }

/* Hero Section */
#hero-3d {
  position: relative;
  overflow: hidden;
}

.video-overlay {
    background-color: rgba(0, 0, 0, 0.5);
}

/* Animations & Hover Effects */
.animate-fade-in { animation: fadeIn 1.2s cubic-bezier(0.4, 0, 0.2, 1); }

.hero-animate-1,
.hero-animate-2,
.hero-animate-3,
.hero-animate-4,
.hero-animate-5 {
    opacity: 0;
    animation-fill-mode: forwards;
    animation-name: fadeInSlideUp;
    animation-duration: 0.8s;
    animation-timing-function: ease-out;
}

@keyframes fadeInSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


.hero-animate-1 { animation-delay: 0.3s; }
.hero-animate-2 { animation-delay: 0.5s; }
.hero-animate-3 { animation-delay: 0.7s; }
.hero-animate-4 { animation-delay: 0.9s; }
.hero-animate-5 { animation-delay: 1.1s; }

.hover-scale { transition: transform 0.4s ease-in-out; }
.hover-scale:hover { transform: scale(1.03); }
.heading-hover { transition: letter-spacing 0.4s ease-in-out; }
.heading-hover:hover { letter-spacing: 0.05em; }

.accent-hover {
    transition: transform 0.4s ease-in-out, font-weight 0.4s ease-in-out, text-shadow 0.4s ease-in-out;
}
.accent-hover:hover {
    transform: scale(1.03);
    font-weight: 700;
}

.scroll-reveal { opacity: 0; transform: translateY(10px); transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
.scroll-reveal.visible { opacity: 1; transform: translateY(0); }

/* Buttons & Interactive Elements */
.filter-btn, .pagination-btn {
  transition: background-color 0.4s ease-in-out, color 0.4s ease-in-out, transform 0.2s ease;
  font-family: 'Inter', sans-serif;
  background-color: #e5e7eb; /* gray-200 */
  color: #111827; /* dark */
}
.filter-btn.active, .pagination-btn.active {
  background-color: #6366f1; /* primary color */
  color: #FFFFFF;
}

.filter-btn:active, .pagination-btn:active, .case-study-card:active {
  transform: scale(0.98);
  transition: transform 0.1s ease;
}

.filter-btn, .pagination-btn, .floating-contact-btn {
  min-height: 44px;
  min-width: 44px;
}

.filter-btn:focus-visible, .pagination-btn:focus-visible, .case-study-card:focus-visible, a:focus-visible, button:focus-visible {
  outline: 3px solid #4f46e5; /* darker primary */
  outline-offset: 3px;
  border-radius: 4px;
}

.bg-accent:hover, .bg-accent:focus {
  background-color: #4f46e5; /* darker primary */
}
.focus\:ring-indigo-600 {
  outline-color: #6366f1; /* primary color */
  --tw-ring-color: #6366f1; /* primary color */
}

/* Case Study Section */
#case-studies {
  background-color: #f9fafb; /* surface */
}

.case-study-card {
  background: #ffffff;
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border: 1px solid #e5e7eb; /* gray-200 */
  cursor: pointer;
  display: flex;
  flex-direction: column;
}
.case-study-card:hover, .case-study-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
  border-color: #6366f1; /* primary color */
  outline: none;
}
.case-study-card.hidden {
  opacity: 0;
  transform: scale(0.98);
  display: none;
}
.case-study-thumbnail {
  max-height: 192px;
  width: 100%;
  object-fit: cover;
  border-radius: 0.5rem;
  margin-top: auto;
  padding-top: 1rem;
}

.case-study-card h4 {
  color: #111827; /* dark */
}

.case-study-card p.text-secondary {
  color: #374151; /* medium gray */
}

/* Tag Component */
#case-studies .tag {
  display: inline-block;
  font-size: 0.875rem;
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-weight: 500;
  transition: transform 0.2s ease-in-out, filter 0.2s ease-in-out;
}

#case-studies .tag:hover {
  transform: translateY(-2px);
  filter: brightness(95%);
}

#case-studies .tag-gray   { background-color: #F1F1EF; color: #787774; }
#case-studies .tag-brown  { background-color: #F3EEEE; color: #976D57; }
#case-studies .tag-orange { background-color: #F8ECDF; color: #CC782F; }
#case-studies .tag-yellow { background-color: #FAF3DD; color: #C29343; }
#case-studies .tag-green  { background-color: #EEF3ED; color: #548164; }
#case-studies .tag-blue   { background-color: #E9F3F7; color: #487CA5; }
#case-studies .tag-purple { background-color: #F6F3F8; color: #8A67AB; }
#case-studies .tag-pink   { background-color: #F9F2F5; color: #B35488; }
#case-studies .tag-red    { background-color: #FAECEC; color: #C4554D; }

/* Key Skills Section */
#skills .bg-white {
  background-color: #ffffff;
  border-radius: 0.75rem;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.02);
}

/* Navigation and Pagination Components */
.nav-link.active {
    color: #6366f1; /* primary color */
    font-weight: 600;
}

#mobile-menu { transition: opacity 0.3s ease-in-out; }
#mobile-menu.active { display: flex; opacity: 1; }
.pagination-nav { display: flex; justify-content: center; gap: 0.5rem; flex-wrap: wrap; }
.pagination-btn:disabled { opacity: 0.5; cursor: not-allowed; }
nav { display: block; z-index: 40; }

/* Highlight Components */
.impact-highlight, .current-role {
  background-color: #eef2ff; /* lighter primary */
  border-left: 4px solid #6366f1; /* primary color */
}

/* Floating Contact Button Component */
.floating-contact-btn {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 30;
  background-color: #6366f1; /* primary color */
  color: white;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.floating-contact-btn.visible {
    opacity: 1;
    transform: translateY(0);
}


/* ADDED: Enhanced Accessibility Focus States */
a:focus-visible, button:focus-visible, input:focus-visible, [tabindex="0"]:focus-visible, .case-study-card:focus-visible {
    outline: 3px solid #4f46e5; /* darker primary */
    outline-offset: 3px;
    border-radius: 4px;
}