/* ==========================================================================
   StudyVault — Minimalist & Motion Focused
   ========================================================================== */

:root {
  --bg-dark: #050505;
  --text-primary: #f0f0f0;
  --text-secondary: #999;
  --glass-bg: rgba(20, 20, 20, 0.4);
  --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-dark);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ==========================================================================
   Background & Movement
   ========================================================================== */
.dynamic-bg {
  position: fixed;
  top: -5%; left: -5%;
  width: 110vw; height: 110vh;
  /* Make sure to save the image you uploaded as bg-wave.jpg in the same folder */
  background-image: url('bg-wave.jpg'); 
  background-size: cover;
  background-position: center;
  z-index: -2;
  /* The subtle smooth movement animation */
  animation: bgPan 40s ease-in-out infinite alternate;
  /* Slightly dim the background so text remains clear */
  filter: brightness(0.7) contrast(1.1);
}

@keyframes bgPan {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.08) translate(-2%, -2%); }
}

.particles { position: fixed; top:0; left:0; width:100%; height:100%; z-index:-1; pointer-events:none; }

/* ==========================================================================
   Layout
   ========================================================================== */
.app-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
  /* Entrance animation for the whole container */
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

/* ==========================================================================
   Header & Search
   ========================================================================== */
.header {
  margin-bottom: 2rem;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.8rem 1.5rem;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

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

.logo { text-decoration: none; color: #fff; font-weight: 600; font-size: 1.1rem; letter-spacing: -0.5px;}
.glass-badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  background: rgba(255,255,255,0.1);
  border-radius: 100px;
  color: var(--text-secondary);
}

.search-wrapper { flex: 1; max-width: 450px; }
.search-box {
  display: flex;
  align-items: center;
  background: rgba(0,0,0,0.3);
  border-radius: 10px;
  padding: 0.5rem 1rem;
  border: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}
.search-box:focus-within {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.08);
}
.search-icon { color: var(--text-secondary); margin-right: 0.75rem; }
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  color: #fff;
  outline: none;
  font-size: 0.95rem;
}
.search-input::placeholder { color: #666; }
.kbd-shortcut {
  font-size: 0.7rem; color: #666; background: rgba(255,255,255,0.05); padding: 0.2rem 0.4rem; border-radius: 4px; border: 1px solid rgba(255,255,255,0.1);
}

/* ==========================================================================
   Filters
   ========================================================================== */
.filters-wrapper {
  margin-bottom: 2rem;
}
.filter-pills {
  display: flex;
  gap: 0.5rem;
}
.pill {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 0.4rem 1.2rem;
  border-radius: 100px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
}
.pill:hover { color: #fff; background: rgba(255,255,255,0.1); }
.pill--active {
  background: #fff;
  color: #000;
  border-color: #fff;
}

/* ==========================================================================
   Files List (List View)
   ========================================================================== */
.files-grid {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* Minimal List Item Card */
.file-card {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0.8rem 1.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  color: inherit;
  
  /* Initial state for entrance animation from app.js */
  opacity: 0;
  transform: translateY(10px);
}

.file-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* The real magic in transitions */
.file-card:hover {
  background: rgba(40, 40, 40, 0.5);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateX(12px);
}

.file-card__glow {
  position: absolute; top:0; left:0; width:100%; height:100%; pointer-events:none; z-index:0; opacity:0; transition:opacity 0.3s;
}

/* Header contains Icon and Badges */
.file-card__header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  width: 140px;
  flex-shrink: 0;
  z-index: 1;
}

.file-card__icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.05);
}

/* Badges */
.file-card__badges { display: flex; gap: 0.5rem; }
.file-card__badges .badge:last-child { display: none; } /* Hide the size badge since it's redundant here */
.badge { font-size: 0.7rem; padding: 0.2rem 0.5rem; border-radius: 6px; background: rgba(255,255,255,0.05); color: #aaa;}
.ribbon-new {
  position: absolute;
  top: 15px;
  left: -32px;
  width: 120px;
  text-align: center;
  background: #ffffff;
  color: #000000;
  padding: 4px 0;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  transform: rotate(-45deg);
  z-index: 20;
  box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

/* Title */
.file-card__title {
  flex: 1;
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  z-index: 1;
  padding-right: 1rem;
}

/* Meta info */
.file-card__meta {
  display: flex;
  gap: 1.5rem;
  width: 180px;
  justify-content: flex-end;
  z-index: 1;
  opacity: 0.6;
}
.meta-item {
  display: flex; align-items: center; gap: 0.4rem; font-size: 0.8rem;
}
.meta-item svg { width: 14px; height: 14px; }

/* Actions (Buttons) */
.file-card__actions {
  display: flex;
  gap: 0.5rem;
  margin-left: 1.5rem;
  z-index: 1;
  opacity: 0; /* Hidden by default */
  transform: translateX(-10px);
  transition: all 0.3s ease;
}
/* Reveal actions on hover */
.file-card:hover .file-card__actions {
  opacity: 1;
  transform: translateX(0);
}

.btn {
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  font-size: 0.8rem;
  text-decoration: none;
  display: flex; align-items: center; gap: 0.4rem;
  transition: 0.2s;
  font-weight: 500;
}
.btn--primary { background: #fff; color: #000; }
.btn--primary:hover { background: #e0e0e0; transform: scale(1.05); }
.btn--ghost { background: rgba(255,255,255,0.05); color: #fff; border: 1px solid rgba(255,255,255,0.1); }
.btn--ghost:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.2); transform: scale(1.05); }

/* Colors for icons */
.file-card__icon--blue { color: #60a5fa; }
.file-card__icon--amber { color: #fbbf24; }
.file-card__icon--cyan { color: #22d3ee; }
.file-card__icon--purple { color: #c084fc; }
.file-card__icon--green { color: #34d399; }
.file-card__icon--red { color: #f87171; }

/* ==========================================================================
   Empty State
   ========================================================================== */
.empty-state {
  text-align: center;
  padding: 4rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
  .header__inner { flex-direction: column; gap: 1rem; align-items: stretch; }
  .search-wrapper { max-width: 100%; }
  .file-card { flex-wrap: wrap; padding: 1rem; }
  .file-card__title { min-width: 100%; margin-top: 0.5rem; margin-bottom: 0.5rem; }
  .file-card__meta { width: auto; flex: 1; justify-content: flex-start; }
  .file-card__actions { opacity: 1; transform: none; margin-left: auto; }
}

/* ==========================================================================
   MULTI-SELECTION & DOWNLOAD ALL (GLASSMORPHISM)
   ========================================================================== */
.file-card__checkbox {
  position: absolute;
  top: 50%;
  left: 20px;
  transform: translateY(-50%) scale(0.8);
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 10;
  pointer-events: none;
}
.file-card__checkbox svg {
  width: 14px;
  height: 14px;
  color: #fff;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.2s;
}

/* When selection mode is active */
.selection-mode .file-card {
  cursor: pointer;
  padding-left: 60px; /* Make room for checkbox on the left */
}
.selection-mode .file-card__checkbox {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}
.selection-mode .file-card:hover .file-card__checkbox {
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.1);
}
.selection-mode .file-card__actions {
  pointer-events: none;
  opacity: 0.3;
}

/* Selected state */
.file-card.selected {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 8px 32px rgba(255, 255, 255, 0.1);
}
.file-card.selected .file-card__checkbox {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 1);
}
.file-card.selected .file-card__checkbox svg {
  color: #000;
  opacity: 1;
  transform: scale(1);
}

/* ==========================================================================
   Markdown Body Styling (Reader View)
   ========================================================================== */
.markdown-body {
  color: #e5e7eb;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3, 
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  margin-top: 24px;
  margin-bottom: 16px;
  font-weight: 600;
  line-height: 1.25;
  color: #ffffff;
}

.markdown-body h1 {
  font-size: 2em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.markdown-body h2 {
  font-size: 1.5em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.markdown-body h3 { font-size: 1.25em; }
.markdown-body h4 { font-size: 1em; }

.markdown-body p, .markdown-body blockquote, .markdown-body ul, 
.markdown-body ol, .markdown-body dl, .markdown-body table, 
.markdown-body pre, .markdown-body details {
  margin-top: 0;
  margin-bottom: 16px;
}

.markdown-body ul, .markdown-body ol {
  padding-inline-start: 2em;
  margin-bottom: 16px;
}

.markdown-body li + li {
  margin-top: 0.4em;
}

.markdown-body li > ul,
.markdown-body li > ol {
  margin-top: 0.4em;
  margin-bottom: 0;
}

.markdown-body blockquote {
  padding: 0.5rem 1rem;
  color: #9ca3af;
  border-inline-start: 4px solid rgba(255, 255, 255, 0.2);
  margin: 0 0 16px 0;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 4px;
}

.markdown-body a {
  color: #60a5fa;
  text-decoration: none;
}

.markdown-body a:hover {
  text-decoration: underline;
}

.markdown-body hr {
  height: 1px;
  padding: 0;
  margin: 24px 0;
  background-color: rgba(255, 255, 255, 0.1);
  border: 0;
}

/* Inline code */
.markdown-body code {
  padding: 0.2em 0.4em;
  margin: 0;
  font-size: 85%;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color: #fca5a5; /* slight reddish/pinkish for inline code */
  direction: ltr;
  unicode-bidi: isolate;
  display: inline-block;
}

/* Code blocks */
.markdown-body pre {
  padding: 16px;
  overflow: auto;
  font-size: 85%;
  line-height: 1.45;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  direction: ltr; /* Force LTR for code blocks */
  text-align: left;
}

.markdown-body pre code {
  display: inline;
  max-width: auto;
  padding: 0;
  margin: 0;
  overflow: visible;
  line-height: inherit;
  word-wrap: normal;
  background-color: transparent;
  border: 0;
  color: #e5e7eb;
}

.markdown-body table {
  border-spacing: 0;
  border-collapse: collapse;
  width: 100%;
  margin-bottom: 16px;
}

.markdown-body table th,
.markdown-body table td {
  padding: 6px 13px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.markdown-body table tr {
  background-color: transparent;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.markdown-body table tr:nth-child(2n) {
  background-color: rgba(255, 255, 255, 0.03);
}

.markdown-body img {
  max-width: 100%;
  box-sizing: content-box;
  border-radius: 8px;
}