/* ========================================
   SECTION: CSS Variables & Reset
   ======================================== */
:root {
  --cyan: #00f0ff;
  --magenta: #ff00e5;
  --purple: #b000ff;
  --dark-bg: #0a0a0f;
  --card-bg: #12121a;
  --card-border: #1a1a2e;
  --text-primary: #e0e0e8;
  --text-muted: #8888aa;
  --glow-cyan: 0 0 10px #00f0ff, 0 0 30px #00f0ff44;
  --glow-magenta: 0 0 10px #ff00e5, 0 0 30px #ff00e544;
  --glow-purple: 0 0 10px #b000ff, 0 0 30px #b000ff44;
  --font-mono: 'Courier New', 'Fira Code', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 900px;
  --section-gap: 2.5rem;
}

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

/* ========================================
   SECTION: Base & Background
   ======================================== */
body {
  background: var(--dark-bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridDrift 20s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes gridDrift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

/* Floating orbs */
body::after {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 20% 30%, rgba(0, 240, 255, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(255, 0, 229, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(176, 0, 255, 0.04) 0%, transparent 40%);
  animation: orbFloat 15s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}

@keyframes orbFloat {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(30px, -20px) rotate(5deg); }
}

/* ========================================
   SECTION: Navigation Bar
   ======================================== */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 56px;
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  text-decoration: none;
  letter-spacing: 0.1em;
  transition: text-shadow 0.3s;
}

.nav-logo:hover {
  text-shadow: 0 0 20px #00f0ff, 0 0 60px #00f0ff66;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  transition: all 0.3s;
  position: relative;
  letter-spacing: 0.03em;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--cyan);
  box-shadow: var(--glow-cyan);
  transition: width 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 70%;
}

.nav-links .nav-private {
  display: none;
}

.nav-links .nav-private.visible {
  display: inline;
}

.nav-auth-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.35rem 1rem;
  border: 1px solid var(--cyan);
  border-radius: 6px;
  background: transparent;
  color: var(--cyan);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: all 0.3s;
  text-shadow: 0 0 6px rgba(0, 240, 255, 0.3);
}

.nav-auth-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  box-shadow: var(--glow-cyan);
}

.nav-auth-btn--logout {
  border-color: var(--magenta);
  color: var(--magenta);
  text-shadow: 0 0 6px rgba(255, 0, 229, 0.3);
}

.nav-auth-btn--logout:hover {
  background: rgba(255, 0, 229, 0.1);
  box-shadow: var(--glow-magenta);
}

/* Body offset for fixed nav */
body.has-nav {
  padding-top: 56px;
}

/* ========================================
   SECTION: Login Modal
   ======================================== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--card-bg);
  border: 1px solid var(--cyan);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  width: 90%;
  max-width: 380px;
  position: relative;
  box-shadow:
    0 0 30px rgba(0, 240, 255, 0.15),
    0 0 60px rgba(0, 240, 255, 0.05),
    inset 0 0 30px rgba(0, 240, 255, 0.02);
  animation: modalAppear 0.3s ease-out;
}

@keyframes modalAppear {
  0% { opacity: 0; transform: scale(0.92) translateY(10px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  transition: color 0.3s;
  line-height: 1;
}

.modal-close:hover {
  color: var(--magenta);
}

.modal h2 {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--cyan);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
  margin-bottom: 1.5rem;
  text-align: center;
  letter-spacing: 0.08em;
}

.modal-field {
  margin-bottom: 1rem;
}

.modal-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.modal-field input {
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.modal-field input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.15);
}

.modal-error {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #ff4466;
  text-align: center;
  margin-bottom: 0.75rem;
  min-height: 1.1em;
  text-shadow: 0 0 8px rgba(255, 68, 102, 0.3);
}

.modal-submit {
  width: 100%;
  padding: 0.7rem;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(176, 0, 255, 0.15));
  border: 1px solid var(--cyan);
  border-radius: 8px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.3s;
}

.modal-submit:hover {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.25), rgba(176, 0, 255, 0.25));
  box-shadow: var(--glow-cyan);
}

/* ========================================
   SECTION: Layout
   ======================================== */
.container {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

/* ========================================
   SECTION: Header & Title
   ======================================== */
header {
  text-align: center;
  padding: 4rem 0 3rem;
}

.title {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  animation: titlePulse 3s ease-in-out infinite;
  position: relative;
  display: inline-block;
}

.title::before {
  content: 'K.I.T.T.';
  position: absolute;
  inset: 0;
  color: var(--magenta);
  text-shadow: var(--glow-magenta);
  clip-path: inset(0 0 50% 0);
  animation: glitchTop 4s ease-in-out infinite;
}

.title::after {
  content: 'K.I.T.T.';
  position: absolute;
  inset: 0;
  color: var(--purple);
  text-shadow: var(--glow-purple);
  clip-path: inset(50% 0 0 0);
  animation: glitchBottom 4s ease-in-out infinite;
}

@keyframes titlePulse {
  0%, 100% { text-shadow: var(--glow-cyan); }
  50% { text-shadow: 0 0 20px #00f0ff, 0 0 60px #00f0ff66, 0 0 100px #00f0ff22; }
}

@keyframes glitchTop {
  0%, 90%, 100% { transform: translate(0); opacity: 0; }
  92% { transform: translate(-3px, -1px); opacity: 0.7; }
  94% { transform: translate(3px, 1px); opacity: 0; }
  96% { transform: translate(-1px, 2px); opacity: 0.5; }
  98% { transform: translate(2px, -1px); opacity: 0; }
}

@keyframes glitchBottom {
  0%, 88%, 100% { transform: translate(0); opacity: 0; }
  90% { transform: translate(2px, 1px); opacity: 0.6; }
  93% { transform: translate(-2px, -2px); opacity: 0; }
  95% { transform: translate(1px, 1px); opacity: 0.4; }
  97% { transform: translate(-3px, 0); opacity: 0; }
}

.subtitle {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2.5vw, 1.15rem);
  color: var(--text-muted);
  margin-top: 0.75rem;
  letter-spacing: 0.08em;
}

.subtitle .emoji {
  display: inline-block;
  animation: emojiFloat 2s ease-in-out infinite;
}

.subtitle .emoji:last-child {
  animation-delay: 0.5s;
}

@keyframes emojiFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

/* Scanline under header */
.scanline {
  width: 100%;
  height: 2px;
  margin: 2rem auto 0;
  background: linear-gradient(90deg,
    transparent,
    var(--cyan) 20%,
    var(--magenta) 50%,
    var(--purple) 80%,
    transparent
  );
  opacity: 0.6;
  animation: scanlinePulse 3s ease-in-out infinite;
}

@keyframes scanlinePulse {
  0%, 100% { opacity: 0.4; transform: scaleX(0.8); }
  50% { opacity: 0.8; transform: scaleX(1); }
}

/* ========================================
   SECTION: Intro Block
   ======================================== */
.intro {
  text-align: center;
  padding: 2.5rem 0;
}

.intro-text {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.8;
}

.intro-text-en {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-style: italic;
}

.intro-text .highlight {
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.3);
}

/* ========================================
   SECTION: Cards Grid
   ======================================== */
.sections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: var(--section-gap);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: default;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.card:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.1), inset 0 0 20px rgba(0, 240, 255, 0.02);
  transform: translateY(-4px);
}

.card:hover::before {
  opacity: 1;
}

/* Clickable card variant */
a.card {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

/* Color variants */
.card--magenta:hover {
  border-color: var(--magenta);
  box-shadow: 0 0 20px rgba(255, 0, 229, 0.1), inset 0 0 20px rgba(255, 0, 229, 0.02);
}
.card--magenta::before {
  background: linear-gradient(90deg, transparent, var(--magenta), transparent);
}

.card--purple:hover {
  border-color: var(--purple);
  box-shadow: 0 0 20px rgba(176, 0, 255, 0.1), inset 0 0 20px rgba(176, 0, 255, 0.02);
}
.card--purple::before {
  background: linear-gradient(90deg, transparent, var(--purple), transparent);
}

.card--mixed:hover {
  border-color: #7b2fff;
  box-shadow: 0 0 20px rgba(123, 47, 255, 0.1), inset 0 0 20px rgba(123, 47, 255, 0.02);
}
.card--mixed::before {
  background: linear-gradient(90deg, transparent, var(--cyan), var(--magenta), transparent);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}

.card-title {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.card-tag {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.2rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 20px;
  border: 1px solid var(--card-border);
  color: var(--text-muted);
}

/* ========================================
   SECTION: Terminal Block
   ======================================== */
.terminal {
  margin-top: var(--section-gap);
  background: #0d0d14;
  border: 1px solid var(--card-border);
  border-radius: 12px;
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: #161622;
  border-bottom: 1px solid var(--card-border);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot--red { background: #ff5f57; }
.terminal-dot--yellow { background: #ffbd2e; }
.terminal-dot--green { background: #28c840; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
}

.terminal-line {
  opacity: 0;
  animation: typeLine 0.5s forwards;
}

.terminal-line:nth-child(1) { animation-delay: 0.3s; }
.terminal-line:nth-child(2) { animation-delay: 0.8s; }
.terminal-line:nth-child(3) { animation-delay: 1.3s; }
.terminal-line:nth-child(4) { animation-delay: 1.8s; }
.terminal-line:nth-child(5) { animation-delay: 2.3s; }

@keyframes typeLine {
  0% { opacity: 0; transform: translateX(-8px); }
  100% { opacity: 1; transform: translateX(0); }
}

.terminal-prompt {
  color: var(--cyan);
}

.terminal-cmd {
  color: var(--text-primary);
}

.terminal-output {
  color: var(--text-muted);
  padding-left: 1rem;
}

.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  background: var(--cyan);
  vertical-align: text-bottom;
  animation: cursorBlink 1s step-end infinite;
  margin-left: 2px;
}

@keyframes cursorBlink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ========================================
   SECTION: Page Header (for subpages)
   ======================================== */
.page-header {
  text-align: center;
  padding: 3rem 0 2rem;
}

.page-title {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.page-subtitle {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  letter-spacing: 0.05em;
}

/* ========================================
   SECTION: Placeholder Content
   ======================================== */
.placeholder-block {
  text-align: center;
  padding: 5rem 2rem;
  margin-top: 2rem;
  background: var(--card-bg);
  border: 1px dashed var(--card-border);
  border-radius: 16px;
}

.placeholder-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
  opacity: 0.6;
}

.placeholder-text {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ========================================
   SECTION: Doc Lock Icon
   ======================================== */
.doc-lock {
  position: fixed;
  top: 70px;
  right: 1.5rem;
  z-index: 999;
  font-size: 1.6rem;
  cursor: pointer;
  transition: all 0.3s;
  user-select: none;
  filter: drop-shadow(0 0 6px currentColor);
}

.doc-lock--locked {
  color: #ff4466;
  text-shadow: 0 0 12px rgba(255, 68, 102, 0.5);
}

.doc-lock--unlocked {
  color: #28c840;
  text-shadow: 0 0 12px rgba(40, 200, 64, 0.5);
}

.doc-lock:hover {
  transform: scale(1.15);
}

/* ========================================
   SECTION: Section Headers
   ======================================== */
.section-title {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--magenta);
  text-shadow: 0 0 8px rgba(255, 0, 229, 0.3);
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--card-border);
}

/* ========================================
   SECTION: Footer
   ======================================== */
footer {
  text-align: center;
  padding: 3rem 0 1.5rem;
  margin-top: var(--section-gap);
}

.footer-line {
  width: 60%;
  height: 1px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(90deg,
    transparent,
    var(--card-border),
    transparent
  );
}

.footer-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.footer-text .powered {
  color: var(--purple);
  text-shadow: 0 0 6px rgba(176, 0, 255, 0.3);
}

.footer-year {
  font-size: 0.7rem;
  color: #444466;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
}

/* ========================================
   SECTION: Scroll Reveal
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   SECTION: Responsive
   ======================================== */
@media (max-width: 600px) {
  .container {
    padding: 1rem 1rem 2rem;
  }

  header {
    padding: 2.5rem 0 2rem;
  }

  .sections-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .card {
    padding: 1.5rem 1.25rem;
  }

  .terminal-body {
    padding: 1rem;
    font-size: 0.78rem;
  }

  .nav-bar {
    padding: 0 1rem;
  }

  .nav-links {
    gap: 0;
  }

  .nav-links a {
    padding: 0.4rem 0.5rem;
    font-size: 0.72rem;
  }

  .nav-auth-btn {
    font-size: 0.7rem;
    padding: 0.3rem 0.7rem;
  }
}

/* ========================================
   SECTION: Blog Post Cards
   ======================================== */
.blog-posts-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: var(--section-gap);
}

.blog-post-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.8rem 1.5rem;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
}

.blog-post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.blog-post-card:hover {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-5px) scale(1.01);
}

.blog-post-card:hover::before {
  opacity: 1;
}

.post-header {
  margin-bottom: 1rem;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.5rem;
}

.post-title {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--cyan);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
  line-height: 1.3;
}

.post-content {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 1.2rem;
}

.post-content p:last-child {
  margin-bottom: 0;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.post-tags .tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--magenta);
  background: rgba(255, 0, 229, 0.08);
  border: 1px solid rgba(255, 0, 229, 0.3);
  padding: 0.3rem 0.8rem;
  border-radius: 5px;
  transition: all 0.3s;
}

.post-tags .tag:hover {
  background: rgba(255, 0, 229, 0.15);
  box-shadow: 0 0 8px rgba(255, 0, 229, 0.4);
}

@media (max-width: 600px) {
  .blog-posts-container {
    gap: 1.5rem;
  }
  .blog-post-card {
    padding: 1.5rem 1.2rem;
  }
  .post-title {
    font-size: 1.2rem;
  }
  .post-content {
    font-size: 0.9rem;
  }
  .post-tags .tag {
    font-size: 0.7rem;
    padding: 0.25rem 0.7rem;
  }
}

/* ========================================
   SECTION: Blog Accordion
   ======================================== */
.blog-post-card details {
  width: 100%;
}

.blog-post-card summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
}

.blog-post-card summary::-webkit-details-marker {
  display: none;
}

.blog-post-card summary::marker {
  display: none;
}

.post-preview {
  font-size: 0.95rem;
  color: var(--text-secondary, #aaa);
  line-height: 1.6;
  margin: 0.5rem 0 0.8rem;
}

.post-expand-hint {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  opacity: 0.7;
  transition: opacity 0.3s;
  margin-top: 0.5rem;
}

.blog-post-card:hover .post-expand-hint {
  opacity: 1;
}

details[open] .post-expand-hint {
  display: none;
}

.post-full-content {
  animation: accordionOpen 0.4s ease-out;
  padding-top: 1rem;
  border-top: 1px solid rgba(0, 240, 255, 0.15);
  margin-top: 1rem;
}

.post-full-content p {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.post-full-content p:last-child {
  margin-bottom: 0;
}

details[open] .blog-post-card,
.blog-post-card:has(details[open]) {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

@keyframes accordionOpen {
  from { opacity: 0; max-height: 0; transform: translateY(-10px); }
  to { opacity: 1; max-height: 1000px; transform: translateY(0); }
}