/* ==========================================================
   base.css — Reset & Global Styles
   ========================================================== */

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.03) 0%, transparent 75%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
}

p {
  line-height: var(--lh-relaxed);
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* --- Selection --- */
::selection {
  background-color: rgba(255, 255, 255, 0.07);
  color: var(--text-primary);
}

/* --- Focus --- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- Scrollbar (subtle) --- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* --- Screen Reader Only --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- Utility: Text --- */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-accent { color: var(--accent); }

.text-xs { font-size: var(--fs-xs); }
.text-sm { font-size: var(--fs-sm); }
.text-base { font-size: var(--fs-base); }
.text-md { font-size: var(--fs-md); }
.text-lg { font-size: var(--fs-lg); }
.text-xl { font-size: var(--fs-xl); }
.text-2xl { font-size: var(--fs-2xl); }

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

.fw-regular { font-weight: var(--fw-regular); }
.fw-medium { font-weight: var(--fw-medium); }
.fw-semibold { font-weight: var(--fw-semibold); }
.fw-bold { font-weight: var(--fw-bold); }

/* --- Utility: Flex --- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* --- Utility: Spacing --- */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.py-4 { padding-block: var(--space-4); }
.py-6 { padding-block: var(--space-6); }
.py-8 { padding-block: var(--space-8); }
.min-h-screen { min-height: 100vh; }
.flex-grow { flex-grow: 1; }
.w-full { width: 100%; }

/* --- Utility: Button Base (Premium styling) --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  min-height: 44px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  line-height: 1;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-normal),
              border-color var(--transition-normal),
              box-shadow var(--transition-normal),
              transform var(--transition-normal);
  cursor: pointer;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #030303;
  border: none;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
  opacity: 0.92;
  box-shadow: 0 6px 20px var(--accent-glow-hover);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(-0.5px);
  box-shadow: 0 2px 8px var(--accent-glow);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent-solid-hover);
  background-color: rgba(129, 140, 248, 0.03);
  transform: translateY(-2px);
}

.btn-outline:active {
  transform: translateY(-0.5px);
  background-color: rgba(129, 140, 248, 0.06);
}

/* --- Utility: Pill / Tag --- */
.pill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  line-height: 1.4;
  transition: border-color var(--transition-normal);
}

.pill:hover {
  border-color: var(--border-hover);
}

/* --- Utility: Card --- */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-normal),
              box-shadow var(--transition-normal),
              transform var(--transition-normal);
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* --- Animations --- */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Staggered delay helpers */
.delay-1 { animation-delay: 60ms; }
.delay-2 { animation-delay: 120ms; }
.delay-3 { animation-delay: 180ms; }
.delay-4 { animation-delay: 240ms; }
.delay-5 { animation-delay: 300ms; }

/* Start hidden for animation */
[class*="fade-in"] {
  opacity: 0;
}

/* --- Premium Dynamic Background Glow --- */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.07) 0%, rgba(192, 132, 252, 0.02) 45%, transparent 70%);
  border-radius: var(--radius-full);
  pointer-events: none;
  z-index: -1;
  will-change: transform;
}

/* Glassmorphism updates for cards */
.card {
  background: var(--bg-card) !important;
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 20px rgba(129, 140, 248, 0.05), var(--shadow-md);
}

/* --- Skeleton Screen Loaders --- */
.skeleton-card, .skeleton-blog-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  position: relative;
  border-radius: var(--radius-md);
}

.skeleton-featured {
  min-height: 280px;
}

.skeleton-thumbnail {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: rgba(255, 255, 255, 0.02);
}

.skeleton-content {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skeleton-line {
  height: 14px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-xs);
  position: relative;
  overflow: hidden;
}

.skeleton-line.w-1\/4 { width: 25%; }
.skeleton-line.w-1\/3 { width: 33.33%; }
.skeleton-line.w-1\/2 { width: 50%; }
.skeleton-line.w-3\/4 { width: 75%; }
.skeleton-line.w-full { width: 100%; }

.skeleton-animate {
  position: relative;
  overflow: hidden;
}

.skeleton-animate::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  transform: translateX(-100%);
  background-image: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.03) 20%,
    rgba(255, 255, 255, 0.06) 60%,
    rgba(255, 255, 255, 0) 100%
  );
  animation: shimmer 1.6s infinite;
}

@keyframes shimmer {
  100% {
    transform: translateX(100%);
  }
}