@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* System Theme Defaults (Light) */
  --bg-main: #f9fafb;
  --bg-card: #ffffff;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --border-color: rgba(0, 0, 0, 0.1);
  
  /* Brand Accents*/
  --color-primary: #04012e;
  --color-secondary: #0245ff;
  --accent-blue: #0245ff; /* Match the vibrant blue used in updates */
}

.dark {
  /* Dark Theme */
  --bg-main: #030303;
  --bg-card: rgba(3, 3, 3, 0.04);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.4);
  --border-color: rgba(255, 255, 255, 0.08);
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* Glassmorphic Navbar (Pill shape) */
.nav-pill {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 9999px; /* Pill shape */
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Button Primary (Reference Glowing Pill Style without dark border) */
.btn-primary {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  color: #ffffff;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent-blue), var(--color-primary), var(--color-secondary));
  background-size: 200% 200%;
  animation: gradientFlow 5s ease infinite;
  box-shadow: 
    inset 0 0 4px rgba(255, 255, 255, 0.4), 
    inset 0 0 12px rgba(255, 255, 255, 0.2),
    0 8px 15px rgba(2, 69, 255, 0.4);
  transition: all 0.7s cubic-bezier(0.25, 0.8, 0.25, 1);
  overflow: hidden;
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 
    inset 0 0 8px rgba(255, 255, 255, 0.6), 
    inset 0 0 20px rgba(255, 255, 255, 0.4),
    0 0px 40px rgba(2, 69, 255, 0.7);
}

.btn-primary:active {
  transform: translateY(0) scale(0.99);
  box-shadow: 
    inset 0 0 2px rgba(255, 255, 255, 0.3), 
    inset 0 0 8px rgba(255, 255, 255, 0.1),
    0 4px 12px rgba(2, 69, 255, 0.3);
}

/* Button Secondary (Glassmorphic match for GitHub) */
.btn-secondary {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3), 0 0 20px rgba(2, 69, 255, 0.2);
}

.btn-secondary:active {
  transform: translateY(0) scale(0.99);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Glass Cards */
.glass-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.dark .glass-card::before {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.05), transparent);
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.dark .glass-card:hover::before {
  opacity: 1;
}

.dark .glass-card:hover {
  background-color: rgba(255,255,255,0.06);
}

.light .glass-card {
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
}

/* Text Gradients */
.text-gradient {
  background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Custom Animations */
@keyframes rotate-1turn {
  to { transform: rotate(360deg); }
}
.animate-spin-slow {
  animation: rotate-1turn 8s linear infinite;
}

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-in-up {
  opacity: 0;
  animation: fade-in-up 1s cubic-bezier(0.25, 0.4, 0.25, 1) forwards;
}

@keyframes float-slow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(15px); }
}
.animate-float-slow {
  animation: float-slow 12s ease-in-out infinite;
}

/* Marquee Animation */
@keyframes marquee {
  0% { transform: translateX(0%); }
  100% { transform: translateX(-100%); }
}
.animate-marquee {
  animation: marquee 80s linear infinite;
}

@keyframes marquee-reverse {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(0%); }
}
.animate-marquee-reverse {
  animation: marquee-reverse 80s linear infinite;
}

/* Shimmer Button Effect */
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}
.animate-shimmer {
  animation: shimmer 0.8s ease-in-out;
}

/* Premium Gallery Styling */
.gallery-overlay {
  position: absolute !important;
  top: 1rem !important;
  left: 1rem !important;
  padding: 0.5rem 1rem !important;
  background: rgba(0, 0, 0, 0.7) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(255, 255, 255, 0.15) !important;
  border-left: 3px solid #5584ff !important; /* Premium accent line */
  border-radius: 8px !important;
  color: #ffffff !important;
  font-size: 10px !important;
  font-weight: 800 !important;
  letter-spacing: 0.15em !important;
  z-index: 40 !important;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 0 15px rgba(85, 132, 255, 0.1) !important;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1) !important;
  pointer-events: none !important;
  opacity: 0 !important;
  transform: translateY(10px) !important;
}

.gallery-item:hover .gallery-overlay {
  opacity: 1 !important;
  transform: translateY(0) !important;
  background: rgba(0, 0, 0, 0.85) !important;
  box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.7), 0 0 20px rgba(85, 132, 255, 0.3) !important;
}

/* Accordion Details */
details summary::-webkit-details-marker {
  display: none;
}
details[open] summary ~ * {
  animation: sweep .2s ease-in-out;
}
@keyframes sweep {
  0%    {opacity: 0; transform: translateY(-10px)}
  100%  {opacity: 1; transform: translateY(0)}
}

/* Navigation Dropdown */
.nav-dropdown {
  position: relative;
  display: inline-block;
}

.nav-dropdown-content {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 220px;
  background: rgba(10, 10, 12, 0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.25rem;
  padding: 0.75rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  z-index: 100;
  margin-top: 1rem;
}

.nav-dropdown:hover .nav-dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: 0.75rem 1rem;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 0.75rem;
  transition: all 0.25s ease;
  text-transform: none;
  letter-spacing: normal;
}

.nav-dropdown-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: white;
  padding-left: 1.25rem;
}

/* Active Nav Link with Underline Micro-animation */
.nav-link-active {
    color: var(--accent-blue) !important;
    position: relative;
    font-weight: 600;
}

.nav-link-active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-blue);
    border-radius: 9999px;
    transform: scaleX(1);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
    box-shadow: 0 0 12px var(--accent-blue);
}

.nav-link-item {
    position: relative;
}

.nav-link-item::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-blue);
    border-radius: 9999px;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}

/* Mobile Menu Drawer */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 60vh;
    background: rgba(8, 8, 10, 0.95);
    backdrop-filter: blur(32px) saturate(200%);
    -webkit-backdrop-filter: blur(32px) saturate(200%);
    z-index: 1000;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    border-left: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    box-shadow: -20px 0 50px rgba(0, 0, 0, 0.6);
    border-radius: 2rem 0 0 2rem;
}

.mobile-drawer.is-open {
    right: 0;
}

.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.mobile-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.mobile-drawer-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1.5rem;
    color: rgba(255, 255, 255, 0.4);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 1rem;
    margin: 0 0.5rem;
    position: relative;
}

.mobile-drawer-link svg {
    transition: all 0.3s ease;
}

.mobile-drawer-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.05);
}

.mobile-drawer-link.active {
    color: var(--accent-blue);
    background: rgba(2, 69, 255, 0.08);
}

.mobile-drawer-link.active svg {
    color: var(--accent-blue);
    opacity: 1;
    transform: scale(1.1);
}

/* Dropdown Styles */
.mobile-drawer-dropdown-btn {
    justify-content: space-between !important;
}

.mobile-drawer-dropdown-content {
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.mobile-drawer-dropdown.is-open .mobile-drawer-dropdown-content {
    max-height: 500px;
    opacity: 1;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.mobile-drawer-dropdown.is-open .dropdown-chevron {
    transform: rotate(180deg);
}

.mobile-drawer-sublink {
    display: block;
    padding: 0.625rem 1rem;
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 0.75rem;
    transition: all 0.3s ease;
}

.mobile-drawer-sublink:hover {
    color: white;
    background: rgba(255, 255, 255, 0.03);
}

.mobile-drawer-sublink.active {
    color: var(--accent-blue);
    background: rgba(2, 69, 255, 0.05);
    font-weight: 600;
}

/* Hamburger Button */
.hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 32px;
    height: 24px;
    cursor: pointer;
    z-index: 100;
    position: relative;
    padding: 4px;
    background: transparent;
    border: none;
    outline: none;
    transition: background-color 0.3s ease;
}

@media (min-width: 768px) {
    .hamburger-btn {
        display: none;
    }
}

.hamburger-btn span {
    display: block;
    width: 100%;
    height: 2.5px;
    background-color: #ffffff;
    border-radius: 4px;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.hamburger-btn.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger-btn.is-active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.hamburger-btn.is-active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.nav-link-item:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}