/* ==========================================================================
   DEPARTMENT OF ENGLISH - REFINED COMPONENTS & UI ELEMENTS
   Clean buttons, paper slipcase cards, archival dropzone, precision modals
   ========================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--ink-primary);
  color: var(--bg-body);
  border-color: var(--ink-primary);
}

.btn-primary:hover {
  background-color: var(--ink-secondary);
  border-color: var(--ink-secondary);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--ink-primary);
  border-color: var(--rule-color);
  box-shadow: var(--shadow-subtle);
}

.btn-secondary:hover {
  border-color: var(--ink-primary);
  background-color: var(--bg-surface);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  font-family: var(--font-mono);
}

/* Badges & Tags */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--rule-color);
  color: var(--ink-secondary);
  border-radius: var(--radius);
  background-color: var(--bg-surface);
}

.badge-accent {
  border-color: var(--rule-accent);
  color: var(--rule-accent);
}

/* Filter Controls */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--rule-color);
  color: var(--ink-secondary);
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover {
  color: var(--ink-primary);
  border-color: var(--ink-primary);
}

.filter-btn.active {
  background: var(--ink-primary);
  color: var(--bg-body);
  border-color: var(--ink-primary);
}

/* Search Box */
.search-wrapper {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 0.65rem 0.85rem 0.65rem 2.2rem;
  background: var(--bg-input);
  border: 1px solid var(--rule-color);
  border-radius: var(--radius);
  color: var(--ink-primary);
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition);
  font-family: var(--font-sans);
}

.search-input:focus {
  border-color: var(--ink-primary);
}

.search-icon-svg {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  color: var(--ink-muted);
  pointer-events: none;
}

/* Modal Overlay & Archival Window */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(20, 19, 18, 0.55);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  padding: 1.5rem;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-window {
  background: var(--bg-card);
  border: 1px solid var(--rule-color);
  border-radius: var(--radius);
  max-width: 720px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  padding: 2.5rem;
  box-shadow: var(--shadow-lift);
}

@media (max-width: 600px) {
  .modal-overlay {
    padding: 0.75rem;
  }
  .modal-window {
    padding: 1.5rem 1.2rem;
    max-height: 92vh;
  }
  .modal-window::before {
    display: none;
  }
}

.modal-window::before {
  content: "";
  position: absolute;
  top: 6px; left: 6px; right: 6px; bottom: 6px;
  border: 1px solid var(--rule-color);
  pointer-events: none;
  opacity: 0.6;
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: 1px solid var(--rule-color);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-muted);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  z-index: 2;
}

.modal-close-btn:hover {
  color: var(--ink-primary);
  border-color: var(--ink-primary);
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink-secondary);
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--rule-color);
  border-radius: var(--radius);
  color: var(--ink-primary);
  font-size: 0.9rem;
  outline: none;
  font-family: var(--font-sans);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--ink-primary);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

/* Archival Upload Dropzone with Corner Brackets */
.upload-dropzone {
  border: 1px dashed var(--rule-color);
  border-radius: var(--radius);
  padding: 2.2rem 1.5rem;
  text-align: center;
  background: var(--bg-surface);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
  border-color: var(--ink-primary);
  background: var(--bg-subtle);
}

.file-input-hidden {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  opacity: 0;
  cursor: pointer;
}

.selected-file-banner {
  margin-top: 0.75rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--rule-color);
  background: var(--bg-surface);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--ink-primary);
  color: var(--bg-body);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  box-shadow: var(--shadow-lift);
}