/* ==========================================================================
   sarojparajuli.com.np — Modern Tech Stylesheet
   Palette: Black, Deep Midnight Navy, Deep Blue & Sky Blue
   Clean, Minimalist Sans-Serif Typography & Responsive Layout
   ========================================================================== */

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Dark Theme (Default) */
  --bg-primary: #080c14;
  --bg-secondary: #0d1527;
  --bg-card: #111a30;
  --bg-elevated: #16223f;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --sky-accent: #38bdf8;
  --sky-hover: #0ea5e9;
  --blue-accent: #2563eb;
  --border: rgba(148, 163, 184, 0.12);
  --border-hover: rgba(56, 189, 248, 0.45);
  --glass-bg: rgba(8, 12, 20, 0.85);
  --glass-border: rgba(56, 189, 248, 0.15);
  --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

/* Light Theme */
html[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-elevated: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --sky-accent: #0284c7;
  --sky-hover: #0369a1;
  --blue-accent: #1d4ed8;
  --border: rgba(15, 23, 42, 0.1);
  --border-hover: rgba(2, 132, 199, 0.5);
  --glass-bg: rgba(248, 250, 252, 0.9);
  --glass-border: rgba(2, 132, 199, 0.2);
  --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  font-family: var(--font-sans);
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
}

/* Glass Surface Navigation & Cards */
.glass-nav {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--card-shadow);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

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

/* Sky-Blue Glow Badges & Accents */
.badge-sky {
  background: rgba(56, 189, 248, 0.1);
  color: var(--sky-accent);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.text-gradient-sky {
  background: linear-gradient(135deg, #f8fafc 30%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme="light"] .text-gradient-sky {
  background: linear-gradient(135deg, #0f172a 40%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Interactive Navigation Tabs */
.nav-tab-btn {
  position: relative;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-tab-btn.active {
  color: #ffffff;
  background-color: #0284c7;
}

html[data-theme="dark"] .nav-tab-btn.active {
  background-color: #0284c7;
  color: #ffffff;
  box-shadow: 0 0 15px rgba(14, 165, 233, 0.4);
}

/* Sub-Tab Navigation for Career & Portfolio */
.subtab-pill {
  transition: all 0.2s ease;
}

.subtab-pill.active {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
}

/* Responsive YouTube Video Player Container */
.video-responsive-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 1rem;
  background: #000000;
}

.video-responsive-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Rich Blog Prose Styling (Markdown Support) */
.blog-prose {
  color: var(--text-primary);
  line-height: 1.8;
  font-size: 1.05rem;
}

.blog-prose h1, .blog-prose h2, .blog-prose h3 {
  color: var(--text-primary);
  font-weight: 700;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.blog-prose h1 { font-size: 2rem; }
.blog-prose h2 { font-size: 1.5rem; color: var(--sky-accent); }
.blog-prose h3 { font-size: 1.25rem; }

.blog-prose p {
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

.blog-prose a {
  color: var(--sky-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.blog-prose blockquote {
  border-left: 4px solid var(--sky-accent);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
  background: rgba(56, 189, 248, 0.05);
  padding: 1rem;
  border-radius: 0 0.75rem 0.75rem 0;
}

.blog-prose ul, .blog-prose ol {
  margin: 1.25rem 0 1.25rem 1.75rem;
  color: var(--text-secondary);
}

.blog-prose li {
  margin-bottom: 0.5rem;
}

.blog-prose img {
  max-width: 100%;
  height: auto;
  border-radius: 1rem;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  box-shadow: var(--card-shadow);
}

/* Responsive Tables inside Blogs */
.blog-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border);
  font-size: 0.925rem;
}

.blog-prose th {
  background: var(--bg-elevated);
  color: var(--sky-accent);
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: 600;
  border-bottom: 2px solid var(--border);
}

.blog-prose td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.blog-prose tr:hover td {
  background: rgba(56, 189, 248, 0.04);
}

.blog-prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--bg-elevated);
  color: var(--sky-accent);
  padding: 0.2rem 0.4rem;
  border-radius: 0.35rem;
  border: 1px solid var(--border);
}

.blog-prose pre {
  background: #030712;
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: 0.75rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.blog-prose pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: #38bdf8;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #38bdf8;
}

/* Section visibility transitions */
.site-section {
  animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}