/* ==== BASE THEME VARIABLES ==== */
:root {
  --primary-bg: #0a0a0a;
  --secondary-bg: #1a1a1a;
  --card-bg: #252525;
  --accent: #00d4aa;
  --accent-darker: #00a085;
  --text-primary: #e8e8e8;
  --text-secondary: #b8b8b8;
  --text-dim: #888888;
  --border-color: #333333;
  --header-bg: #1a1a1a;
  --footer-text: #b8b8b8;
  --success: #00ff88;
  --warning: #ffaa00;
  --error: #ff4444;
  --icon-size: 1.2rem;
  --icon-spacing: 0.5rem;
  --border-radius: 6px;
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* ==== RESET & BASE STYLES ==== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.4s ease, color 0.4s ease;
}

code, pre, .mono {
  font-family: "JetBrains Mono", "Consolas", "Monaco", "Courier New", monospace;
}

/* ==== NAVIGATION ==== */
nav {
  background-color: var(--secondary-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1rem;
}

.nav-brand {
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

.nav-brand:hover {
  text-shadow: 0 0 10px rgba(0, 212, 170, 0.3);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 0;
}

.nav-links a {
  display: block;
  padding: 1rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease, 
              box-shadow 0.2s ease, background-color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  box-shadow: inset 0 -2px 0 var(--accent);
  background-color: rgba(0, 212, 170, 0.05);
}

.nav-links a:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ==== FLOATING CONTROLS ==== */
.floating-controls {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1000;
}

.floating-controls button {
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.floating-controls button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.floating-controls button:active {
  transform: scale(0.95);
}

#theme-toggle {
  background: var(--accent);
  color: var(--primary-bg);
}

#theme-toggle:hover {
  background: var(--accent-darker);
  box-shadow: 0 0 20px rgba(0, 212, 170, 0.3);
}

#scroll-to-top {
  background: var(--secondary-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

#scroll-to-top:hover {
  background: var(--accent);
  color: var(--primary-bg);
  border-color: var(--accent);
}

#login-btn {
  background: #4CAF50;
  color: white;
}

#login-btn:hover {
  background: #45a049;
}

#logout-btn {
  background: #f44336;
  color: white;
}

#logout-btn:hover {
  background: #da190b;
}

.hidden {
  display: none !important;
}

/* ==== MATERIAL ICONS ==== */
.material-icons {
  font-size: var(--icon-size);
  vertical-align: middle;
  margin-right: var(--icon-spacing);
  transition: color 0.2s ease, transform 0.2s ease;
}

.material-icons.icon-only {
  margin-right: 0;
}

/* ==== MAIN LAYOUT ==== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* ==== HERO SECTION ==== */
header.hero {
  background: linear-gradient(135deg, var(--header-bg) 0%, var(--primary-bg) 100%);
  padding: 3rem 1rem;
  text-align: center;
  border-bottom: 2px solid var(--accent);
  transition: background 0.4s ease;
}

.hero-title {
  color: var(--accent);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
  position: relative;
}

.hero-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-darker));
  border-radius: 2px;
}

.hero-description p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 1rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-description strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ==== CONTENT LAYOUT ==== */
.content-wrapper {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
  margin-top: 2rem;
}

/* ==== PROJECTS SECTION ==== */
section h2 {
  color: var(--text-primary);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  border-left: 4px solid var(--accent);
  padding-left: 1rem;
  transition: color 0.2s ease;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-left: 2px solid var(--card-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.3s ease, 
              background-color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--accent-darker);
  border-left-color: var(--accent);
  box-shadow: var(--shadow-hover),
              0 0 0 1px rgba(0, 212, 170, 0.1);
}

.card h3 {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  transition: color 0.2s ease;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.card-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 1rem;
}

.btn-read {
  background: var(--accent);
  color: var(--primary-bg);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-read:hover {
  background: var(--accent-darker);
  transform: translateY(-1px);
}

/* ==== PAGINATION ==== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1rem 0;
}

.pagination-btn {
  background: var(--secondary-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.pagination-btn:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--primary-bg);
}

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-info {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

/* ==== ASIDE SIDEBAR ==== */
aside .card {
  background-color: var(--secondary-bg);
}

aside h2 {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 1rem;
  border-left: none;
  padding-left: 0;
}

aside h3 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

aside p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.sidebar-note {
  color: var(--text-dim);
  font-style: italic;
  font-size: 0.8rem;
  border-left: 2px solid var(--accent-darker);
  padding-left: 0.75rem;
  margin-top: 1rem;
}

.pinned {
  list-style: none;
}

.pinned li {
  margin-bottom: 0.5rem;
}

.pinned a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease, transform 0.2s ease;
  position: relative;
  display: flex;
  align-items: center;
}

.pinned a:hover {
  color: var(--accent);
  transform: translateX(1px);
}

/* ==== FOOTER ==== */
footer {
  background-color: var(--header-bg);
  color: var(--footer-text);
  padding: 30px 0 15px;
  font-size: 0.9rem;
  border-top: 2px solid var(--accent-darker);
  margin-top: 3rem;
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20px;
}

.footer-section {
  margin-bottom: 20px;
  min-width: 140px;
}

.footer-section h4 {
  color: var(--accent);
  margin-bottom: 10px;
  font-size: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section ul li {
  margin-bottom: 8px;
}

.footer-section a,
.footer-bottom a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s ease, text-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
}

.footer-section a:hover,
.footer-bottom a:hover {
  color: var(--accent);
  text-shadow: 0 0 8px rgba(0, 212, 170, 0.3);
}

.footer-branding {
  text-align: right;
  flex-grow: 1;
}

.footer-logo {
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: bold;
  text-decoration: none;
  display: block;
  margin-bottom: 10px;
}

.footer-tagline {
  font-style: italic;
  opacity: 0.8;
  margin-bottom: 0.75rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
}

.social-links a {
  color: var(--text-secondary);
  font-size: 1.5rem;
  transition: color 0.2s ease, transform 0.2s ease;
}

.social-links a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  margin-top: 10px;
  border-top: 1px solid var(--border-color);
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.footer-bottom a {
  color: var(--accent);
  text-decoration: none;
}

.muted {
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ==== RESPONSIVE DESIGN ==== */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .nav-links a {
    padding: 0.75rem 1rem;
  }
  
  .content-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-description p {
    font-size: 1rem;
  }
  
  .footer-container {
    flex-direction: column;
  }
  
  .footer-branding {
    text-align: left;
    margin-top: 20px;
  }
  
  .social-links {
    justify-content: flex-start;
  }
  
  .floating-controls {
    bottom: 1rem;
    right: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}