:root {
  /* Custom Palette - "Cyber Indigo" */
  --md-primary-fg-color:        #0f172a;
  --md-primary-fg-color--light: #1e293b;
  --md-primary-fg-color--dark:  #020617;
  --md-accent-fg-color:         #6366f1; /* Indigo 500 */
  
  /* Fonts */
  --md-text-font: "Inter", sans-serif;
  --md-code-font: "JetBrains Mono", monospace;
}

/* DARK MODE (Slate) */
[data-md-color-scheme="slate"] {
  --md-hue: 240;
  --md-default-bg-color: #000000; /* Pure Black */
  --md-default-fg-color: #e0e0e0; /* Light Grey */
  --md-surfaces-bg-color: #0a0a0a; /* Almost Black */
  --md-code-bg-color: #0a0a0a;
  --md-code-fg-color: #818cf8; /* Indigo 400 */
  
  /* Custom vars for dark mode */
  --site-header-bg: rgba(0, 0, 0, 0.85);
  --site-border-color: #222;
  --site-card-bg: #0a0a0a;
  --site-hero-subtitle: #888;
  --site-heading-gradient: linear-gradient(135deg, #818cf8 0%, #c084fc 100%); /* Indigo to Purple */
}

/* LIGHT MODE (Default) */
[data-md-color-scheme="default"] {
  --md-hue: 240;
  --md-default-bg-color: #ffffff;
  --md-default-fg-color: #334155; /* Slate 700 */
  --md-surfaces-bg-color: #f8fafc; /* Slate 50 */
  --md-code-bg-color: #f1f5f9; /* Slate 100 */
  --md-code-fg-color: #4f46e5; /* Indigo 600 */
  
  /* Custom vars for light mode */
  --site-header-bg: rgba(255, 255, 255, 0.9);
  --site-border-color: #e2e8f0; /* Slate 200 */
  --site-card-bg: #ffffff;
  --site-hero-subtitle: #64748b; /* Slate 500 */
  --site-heading-gradient: linear-gradient(135deg, #4f46e5 0%, #9333ea 100%); /* Indigo to Purple */
}

/* 
   LAYOUT OVERHAUL 
   Floating Sidebar Navigation
*/
@media screen and (min-width: 76.25em) {
  /* Fixed Sidebar on the left */
  .md-sidebar--primary {
    display: block;
    position: fixed;
    top: 6rem;
    left: 1rem;
    width: 14rem; /* Wider */
    height: auto;
    max-height: calc(100vh - 120px);
    z-index: 10;
    margin-left: 0;
  }

  .md-sidebar--primary .md-sidebar__scrollwrap {
    background-color: var(--site-card-bg);
    border: 1px solid var(--site-border-color);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    margin: 0;
    overflow-y: auto;
  }

  /* Hide site title */
  .md-nav__title--site {
    display: none;
  }

  /* Nav Links Styling */
  .md-nav__list { padding: 10px 0 0 0; }
  .md-nav__item { padding: 0; }
  
  .md-nav__link {
    margin-top: 0;
    padding: 8px 12px; /* Reduced padding */
    border-radius: 6px;
    transition: background 0.2s;
    font-size: 0.85rem; /* Smaller font */
  }

  .md-nav__link:hover {
    background-color: var(--md-accent-fg-color--transparent);
  }

  .md-nav__link--active {
    font-weight: bold;
    color: var(--md-accent-fg-color) !important;
    background-color: rgba(0,0,0,0.05);
  }

  /* Content Offset */
  .md-content {
    margin-left: 17rem; /* 1rem left + 14rem width + 2rem gap */
    margin-right: 2rem;
    max-width: 1200px; /* Increased max-width */
  }
  
  /* Hide secondary sidebar background */
  .md-sidebar--secondary {
    margin-left: 0;
    background: transparent;
  }
}

/* HEADER */
.md-header {
  background-color: var(--site-header-bg) !important;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--site-border-color);
  box-shadow: none !important;
  color: var(--md-default-fg-color) !important;
}

/* Force header text/icons to be visible in both modes */
.md-header__button,
.md-header__title,
.md-header__option {
  color: var(--md-default-fg-color) !important;
}

/* Custom Logo & Title Styling */
.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  border-radius: 50%;
  height: 42px; /* Bigger logo */
  width: auto;
  border: 2px solid var(--md-accent-fg-color); /* Nice accent border */
  padding: 2px; /* Space between image and border */
}

.md-header__title {
  font-size: 1.4rem !important; /* Bigger text */
  font-weight: 900 !important;
  letter-spacing: -0.5px;
  margin-left: 0.5rem;
  display: flex;
  align-items: center;
}

.md-header__topic {
  font-weight: 900 !important;
}

/* Hide tabs since we are using side nav now */
.md-tabs {
  display: none;
}

/* TYPOGRAPHY */
h1 {
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--site-heading-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1.5rem;
}

h2 {
  font-weight: 700;
  border-bottom: 1px solid var(--site-border-color);
  padding-bottom: 0.5rem;
  margin-top: 2.5rem;
  color: var(--md-default-fg-color);
}

h3, h4, h5, h6 {
  color: var(--md-default-fg-color);
}

/* CARDS & LISTS */
.md-typeset .admonition, 
.md-typeset details {
  background-color: var(--site-card-bg);
  border: 1px solid var(--site-border-color);
  border-radius: 0; /* Sharp corners */
  color: var(--md-default-fg-color);
}

/* BUTTONS */
.md-button {
  border-radius: 0; /* Sharp corners */
  border: 1px solid var(--md-accent-fg-color);
  background: transparent;
  color: var(--md-accent-fg-color);
  transition: all 0.3s ease;
}

.md-button:hover {
  background: var(--md-accent-fg-color);
  color: #fff; /* White text on hover for better contrast */
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.4); /* Indigo glow */
}

/* HERO SECTION (Custom class for index.md) */
.hero-section {
  text-align: center;
  padding: 4rem 0;
  border-bottom: 1px solid var(--site-border-color);
  margin-bottom: 3rem;
}

.hero-title {
  font-size: 4rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1rem;
  background: var(--site-heading-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--site-hero-subtitle);
  max-width: 600px;
  margin: 0 auto 2rem auto;
}

/* BLOG LIST STYLING */
.md-post {
  border-bottom: 1px solid var(--site-border-color);
  padding-bottom: 2rem;
  margin-bottom: 2rem;
}

.md-post__meta {
  color: var(--site-hero-subtitle);
  font-family: var(--md-code-font);
  font-size: 0.8rem;
}

/* GRID CARDS SUPPORT */
.grid.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.grid.cards ul {
  display: contents;
  list-style: none;
  margin: 0;
  padding: 0;
}

.grid.cards li {
  background-color: var(--site-card-bg);
  border: 1px solid var(--site-border-color);
  padding: 1.5rem;
  transition: transform 0.2s, border-color 0.2s;
  list-style: none !important;
  margin: 0 !important;
}

.grid.cards li:hover {
  border-color: var(--md-accent-fg-color);
  transform: translateY(-2px);
}

.grid.cards strong {
  display: block;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--md-default-fg-color);
}

.grid.cards a {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 600;
  color: var(--md-accent-fg-color);
  text-decoration: none;
}

.grid.cards a:hover {
  text-decoration: underline;
}

/* 
   WRITEUP CARDS & FILTERS 
   Shared styles for Writeups Index and Homepage
*/

/* Grid Layout */
.writeup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

/* Card Style */
.writeup-card {
  display: flex; /* Changed from block to flex for height management */
  flex-direction: column;
  background-color: var(--md-code-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 8px;
  padding: 20px;
  text-decoration: none !important;
  color: var(--md-typeset-color) !important;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  cursor: pointer;
  height: 100%; /* Ensure full height in grid */
}

.card-content {
  display: flex;
  flex-direction: column;
  flex: 1;
}

/* For the filter page, we hide by default and show with .show class */
.writeup-grid.filterable .writeup-card {
  display: none;
}
.writeup-grid.filterable .writeup-card.show {
  display: flex; /* Changed from block to flex */
}

.writeup-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  border-color: var(--md-accent-fg-color);
}

.card-header {
  margin-bottom: 15px;
}

.card-title {
  margin: 5px 0 0 0 !important;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--md-typeset-color);
}

.card-date {
  font-size: 0.85em;
  color: var(--md-default-fg-color--light);
}

/* Tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.tag {
  background-color: rgba(0,0,0,0.1);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8em;
  font-family: var(--md-code-font-family);
  border: 1px solid transparent;
}

[data-md-color-scheme="slate"] .tag {
  background-color: rgba(255,255,255,0.1);
}

/* Filter Bar */
.filter-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
  justify-content: center;
}

.filter-btn {
  border: none;
  outline: none;
  padding: 8px 16px;
  background-color: var(--md-code-bg-color);
  cursor: pointer;
  border-radius: 20px;
  font-family: var(--md-text-font-family);
  font-size: 0.9em;
  transition: all 0.3s;
  border: 1px solid var(--md-default-fg-color--lightest);
  color: var(--md-typeset-color);
}

.filter-btn:hover {
  background-color: var(--md-accent-fg-color--transparent);
}

.filter-btn.active {
  background-color: var(--md-accent-fg-color);
  color: black; /* Contrast for active state */
  font-weight: bold;
}

/* CONTACT MODAL */
.modal {
  display: none; 
  position: fixed; 
  z-index: 1000; 
  left: 0;
  top: 0;
  width: 100%; 
  height: 100%; 
  overflow: auto; 
  background-color: rgba(0,0,0,0.6); 
  backdrop-filter: blur(5px);
}

.modal-content {
  background-color: var(--site-card-bg);
  margin: 10% auto; 
  padding: 2rem;
  border: 1px solid var(--md-accent-fg-color);
  width: 90%;
  max-width: 500px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  position: relative;
  animation: modalFadeIn 0.3s;
}

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

.close-modal {
  color: var(--md-default-fg-color--light);
  float: right;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.2s;
}

.close-modal:hover,
.close-modal:focus {
  color: var(--md-accent-fg-color);
  text-decoration: none;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin-top: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  padding: 12px;
  margin-bottom: 10px;
  background: var(--md-code-bg-color);
  border-radius: 8px;
  text-decoration: none;
  color: var(--md-typeset-color);
  transition: transform 0.2s, background 0.2s;
  border: 1px solid transparent;
}

.contact-item:hover {
  transform: translateX(5px);
  border-color: var(--md-accent-fg-color);
  background: var(--md-accent-fg-color--transparent);
}

.contact-icon {
  margin-right: 15px;
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
  display: flex; /* Center SVG */
  align-items: center;
  justify-content: center;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* ABOUT PAGE LAYOUT */
.about-container {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: 3rem;
  align-items: start;
}

.about-text {
  /* Left column styles */
}

.about-sidebar {
  /* Right column styles */
  position: sticky;
  top: 2rem;
  background: var(--site-card-bg);
  padding: 1.5rem;
  border: 1px solid var(--site-border-color);
  border-radius: 8px;
  max-height: 80vh;
  overflow-y: auto;
}

.about-sidebar h2 {
  margin-top: 0;
  font-size: 1.2rem;
  border-bottom: 2px solid var(--md-accent-fg-color);
  display: inline-block;
  margin-bottom: 1rem;
}

.about-sidebar table {
  width: 100%;
  font-size: 0.85rem;
  display: table; /* Override mkdocs default */
}

.about-sidebar td, .about-sidebar th {
  padding: 8px;
}

/* Mentoring & Projects Page Styles */
.mentoring-intro,
.projects-intro {
  margin-bottom: 2rem;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--md-typeset-color);
  max-width: 800px;
}

.card-description {
  margin: 10px 0 15px 0;
  font-size: 0.95rem;
  color: var(--md-typeset-color);
  opacity: 0.9;
}

/* Mentoring Stats Grid */
.mentoring-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.stat-box {
  background-color: var(--md-code-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}

.stat-box:hover {
  transform: translateY(-3px);
  border-color: var(--md-accent-fg-color);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--md-accent-fg-color);
  margin-bottom: 5px;
  font-family: var(--md-code-font-family);
}

.stat-title {
  font-size: 1.1rem;
  font-weight: bold;
  margin-bottom: 5px;
  color: var(--md-typeset-color);
}

.stat-desc {
  font-size: 0.85rem;
  color: var(--md-default-fg-color--light);
}

/* Mentoring Outcomes Section */
.mentoring-outcomes-section {
  margin: 40px 0;
  padding: 25px;
  background-color: rgba(0,0,0,0.03);
  border-radius: 12px;
  border: 1px solid var(--md-default-fg-color--lightest);
}

[data-md-color-scheme="slate"] .mentoring-outcomes-section {
  background-color: rgba(255,255,255,0.03);
}

.mentoring-outcomes-section h3 {
  margin-top: 0;
  margin-bottom: 20px;
  text-align: center;
  color: var(--md-accent-fg-color);
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.outcome-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.outcome-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 50px; /* Prevent shrinking */
  margin-right: 10px;
}

.outcome-icon svg {
  width: 48px;
  height: 48px;
  fill: var(--md-accent-fg-color);
}

.outcome-content strong {
  display: block;
  margin-bottom: 4px;
  color: var(--md-typeset-color);
}

.outcome-content p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--md-default-fg-color--light);
  line-height: 1.4;
}