/* Dark theme, modern, responsive, no frameworks */
:root {
  --bg: #181c24;
  --card-bg: #232837;
  --accent: #4f8cff;
  --accent-hover: #3570d4;
  --text: #e6e6e6;
  --text-light: #b0b8c1;
  --shadow: 0 4px 24px 0 rgba(0,0,0,0.25);
  --radius: 16px;
  --transition: 0.2s cubic-bezier(.4,0,.2,1);
  --font: 'Segoe UI', 'Roboto', 'Arial', sans-serif;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card-bg);
  box-shadow: var(--shadow);
  padding: 1rem 2rem;
  border-radius: 0 0 var(--radius) var(--radius);
  margin-bottom: 2rem;
}

.navbar-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.add-btn {
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1.2rem;
  border: none;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: background var(--transition), box-shadow var(--transition);
}
.add-btn:hover {
  background: var(--accent-hover);
  box-shadow: 0 2px 8px 0 rgba(79,140,255,0.25);
}

#searchBox {
  background: #20243a;
  color: var(--text-light);
  border: none;
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  font-size: 1rem;
  outline: none;
  transition: box-shadow var(--transition);
}
#searchBox:focus {
  box-shadow: 0 0 0 2px var(--accent);
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1rem 2rem 1rem;
}

.aob-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.aob-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.2rem 1.2rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}
.aob-card:hover {
  box-shadow: 0 8px 32px 0 rgba(79,140,255,0.15);
  transform: translateY(-2px) scale(1.01);
}

.aob-card.redesigned {
  border-radius: 18px;
  box-shadow: 0 6px 32px 0 rgba(79,140,255,0.13);
  background: linear-gradient(120deg, #232837 60%, #20243a 100%);
  border: 1.5px solid #232837;
  padding: 1.7rem 1.3rem 1.3rem 1.3rem;
  gap: 0.7rem;
  margin-bottom: 0.2rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.2rem;
}

.aob-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}
.aob-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.5px;
}
.aob-description {
  color: var(--text-light);
  font-size: 0.98rem;
  margin-bottom: 0.5rem;
}

.aob-date {
  font-size: 0.98rem;
  color: var(--text-light);
  font-weight: 400;
  opacity: 0.7;
}

.aob-code-box {
  background: #181c24;
  border-radius: var(--radius);
  border: 1px solid #232837;
  padding: 0.7rem 1rem;
  font-family: 'Fira Mono', 'Consolas', monospace;
  font-size: 1.02rem;
  color: var(--accent);
  resize: vertical;
  min-height: 60px;
  width: 100%;
  margin-bottom: 0.5rem;
  transition: border var(--transition);
}
.aob-code-box:focus {
  border: 1.5px solid var(--accent);
}

.card-actions {
  display: flex;
  gap: 0.7rem;
  align-items: center;
}

.copy-btn, .edit-btn, .delete-btn, .search-replace-toggle {
  background: #232837;
  color: var(--text-light);
  border: none;
  border-radius: var(--radius);
  padding: 0.4rem 0.9rem;
  font-size: 0.98rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.copy-btn:hover, .edit-btn:hover, .delete-btn:hover, .search-replace-toggle:hover {
  background: var(--accent);
  color: #fff;
}

.copy-btn.copied {
  background: #2ecc71 !important;
  color: #fff !important;
  box-shadow: 0 0 0 2px #2ecc71;
}

.search-replace {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  background: #20243a;
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  margin-top: 0.5rem;
  box-shadow: 0 2px 8px 0 rgba(79,140,255,0.10);
}
.search-replace.active {
  display: flex;
}

.search-replace input {
  background: #232837;
  color: var(--text);
  border: none;
  border-radius: var(--radius);
  padding: 0.4rem 0.8rem;
  font-size: 0.98rem;
  outline: none;
}
.search-replace button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.4rem 0.9rem;
  font-size: 0.98rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}
.search-replace button:hover {
  background: var(--accent-hover);
}

.add-form {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem 2rem 1.5rem 2rem;
  max-width: 480px;
  margin: 2rem auto 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.add-form h2 {
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
  font-weight: 600;
}
.add-form label {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 0.2rem;
}
.add-form input, .add-form textarea {
  background: #20243a;
  color: var(--text);
  border: none;
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  font-size: 1rem;
  outline: none;
  margin-bottom: 0.5rem;
  transition: box-shadow var(--transition);
}
.add-form input:focus, .add-form textarea:focus {
  box-shadow: 0 0 0 2px var(--accent);
}
.save-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.7rem 1.2rem;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: background var(--transition);
}
.save-btn:hover {
  background: var(--accent-hover);
}

/* Tabs for AOB/Offset split */
.tab-container {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  justify-content: center;
}
.tab-btn {
  background: var(--card-bg);
  color: var(--text-light);
  border: none;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 0.7rem 2.2rem;
  font-size: 1.08rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  box-shadow: 0 2px 8px 0 rgba(79,140,255,0.10);
}
.tab-btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px 0 rgba(79,140,255,0.18);
}

/* Align offset section fields in card */
.aob-card fieldset {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0 0 0.5rem 0;
  padding: 0.7rem 0.7rem 0.7rem 0.7rem;
  background: #20243a;
  border-radius: var(--radius);
  border: 1px solid #232837;
}
.aob-card fieldset legend {
  margin-bottom: 0.3em;
  font-size: 1.05em;
  color: var(--accent);
}
.aob-card fieldset label {
  margin-bottom: 0.1em;
  color: var(--text-light);
  font-size: 0.97em;
}
.aob-card fieldset textarea {
  margin-bottom: 0.3em;
}

.offset-fieldset {
  border: none;
  padding: 0;
  margin: 0 0 1rem 0;
  background: #20243a;
  border-radius: var(--radius);
}
.offset-fieldset legend {
  font-size: 1.05em;
  color: var(--accent);
  margin-bottom: 0.3em;
}
.offset-row {
  display: flex;
  gap: 1.2rem;
  margin-top: 0.5rem;
}
.offset-col {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.offset-col label {
  color: var(--text-light);
  font-size: 0.97em;
  margin-bottom: 0.1em;
}
.offset-col textarea {
  width: 100%;
  min-width: 0;
  margin-bottom: 0;
}

/* Hero section */
.hero {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem 1rem;
  background: linear-gradient(90deg, #232837 0%, #181c24 100%);
  color: var(--text);
  border-radius: var(--radius);
  margin: 0 auto 2rem auto;
  max-width: 900px;
  box-shadow: 0 4px 24px 0 rgba(79,140,255,0.10);
}
.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
  color: var(--accent);
}
.hero-desc {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-top: 0.2rem;
}

/* Footer */
.footer {
  text-align: center;
  color: var(--text-light);
  font-size: 1rem;
  padding: 1.2rem 0 0.7rem 0;
  margin-top: 2rem;
  background: none;
}

/* Code section */
.code-row {
  display: flex;
  flex-direction: row;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}
.code-section {
  flex: 1 1 0;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.code-box-wrap {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}
.aob-code-box.drag-box {
  overflow-x: auto;
  resize: horizontal;
  min-width: 120px;
  max-width: 100%;
  white-space: pre;
  cursor: grab;
}
.code-label {
  font-size: 0.97em;
  color: var(--text-light);
  margin-bottom: 2px;
  font-weight: 500;
}
.empty-msg {
  color: var(--text-light);
  text-align: center;
  opacity: 0.7;
  font-size: 1.1rem;
  margin-top: 2.5rem;
}

/* Responsive fix for offset fields */
@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem 1rem;
  }
  main {
    padding: 0 0.2rem 2rem 0.2rem;
  }
  .add-form {
    padding: 1.2rem 0.7rem 1rem 0.7rem;
  }
  .aob-card fieldset {
    padding: 0.4rem 0.2rem 0.4rem 0.2rem;
  }
  .tab-btn {
    padding: 0.6rem 1.1rem;
    font-size: 1rem;
  }
  .hero h1 {
    font-size: 1.5rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .footer {
    font-size: 0.95rem;
  }
  .aob-card.redesigned {
    padding: 1.1rem 0.5rem 0.7rem 0.5rem;
  }
}
@media (max-width: 900px) {
  .main, main {
    padding: 0 0.2rem 2rem 0.2rem;
    max-width: 100vw;
  }
  .aob-list {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
  .code-row {
    flex-direction: column;
    gap: 0.7rem;
  }
  .aob-card.redesigned {
    padding: 1.1rem 0.5rem 0.7rem 0.5rem;
    min-width: 0;
  }
  .hero {
    padding: 1.2rem 0.5rem 1rem 0.5rem;
    max-width: 100vw;
  }
  .footer {
    font-size: 0.95rem;
    padding: 0.7rem 0 0.5rem 0;
  }
  .tab-container {
    flex-direction: column;
    gap: 0.5rem;
    align-items: stretch;
  }
  .tab-btn {
    width: 100%;
    padding: 0.7rem 0;
    font-size: 1rem;
  }
  .add-form {
    padding: 1.2rem 0.7rem 1rem 0.7rem;
    max-width: 98vw;
  }
  .offset-row {
    flex-direction: column;
    gap: 0.7rem;
  }
  .offset-col {
    min-width: 0;
  }
}

@media (max-width: 500px) {
  .navbar {
    flex-direction: column;
    gap: 0.7rem;
    padding: 0.7rem 0.3rem;
  }
  .navbar-title {
    font-size: 1.1rem;
  }
  .hero h1 {
    font-size: 1.1rem;
  }
  .hero-desc {
    font-size: 0.95rem;
  }
  .aob-title {
    font-size: 1rem;
  }
  .aob-description {
    font-size: 0.93rem;
  }
  .aob-card.redesigned {
    padding: 0.7rem 0.2rem 0.5rem 0.2rem;
  }
  .add-form {
    padding: 0.7rem 0.2rem 0.7rem 0.2rem;
  }
  .footer {
    font-size: 0.9rem;
    padding: 0.5rem 0 0.3rem 0;
  }
}