/* ═══════════════════════════════════════════════
   Vincode Tools — White & Blue Premium Theme
   Font: Inter 300/400/500/600
   Border Radius: 0.5rem
   ═══════════════════════════════════════════════ */

:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;

  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  --white: #ffffff;
  --radius: 0.5rem;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
  --transition: 0.2s ease;
}

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

[hidden] {
  display: none !important;
}

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 300;
  color: var(--gray-700);
  background: var(--white);
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  font-weight: 400;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* ─── App Layout ─────────────────────────────── */

.app {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.25rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ─── Header ─────────────────────────────────── */

.header {
  padding: 1.5rem 0 1.25rem;
  border-bottom: 1px solid var(--gray-100);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.03em;
}

.logo svg {
  color: var(--blue-500);
}

.logo .accent {
  color: var(--blue-600);
}

.logo a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo a:hover {
  opacity: 0.85;
}

.tagline {
  font-size: 0.85rem;
  color: var(--gray-400);
  font-weight: 300;
  letter-spacing: 0.01em;
}

/* ─── Main ───────────────────────────────────── */

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 0.75rem;
}

/* ═══════════════════════════════════════════════
   TOOLS LANDING PAGE
   ═══════════════════════════════════════════════ */

.tools-hero {
  text-align: center;
  padding: 3rem 1rem 2rem;
}

.tools-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--blue-600);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  padding: 0.3rem 0.85rem;
  border-radius: 2rem;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.tools-hero h1 {
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.04em;
  line-height: 1.2;
  margin-bottom: 0.6rem;
}

.tools-hero h1 span {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tools-hero p {
  font-size: 1.05rem;
  color: var(--gray-500);
  font-weight: 300;
  max-width: 420px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Stats row */
.tools-stats {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-100);
}

.tools-stat {
  text-align: center;
}

.tools-stat-num {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.03em;
}

.tools-stat-label {
  font-size: 0.75rem;
  color: var(--gray-400);
  font-weight: 300;
  margin-top: 0.15rem;
}

/* Section title */
.tools-section-title {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0.5rem 0 0.25rem;
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.35rem;
  text-decoration: none;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-400), var(--blue-600));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.tool-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

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

.tool-card.disabled {
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
}

.tool-card-icon {
  width: 42px;
  height: 42px;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-50);
  color: var(--blue-500);
}

.tool-card.disabled .tool-card-icon {
  background: var(--gray-100);
  color: var(--gray-400);
}

.tool-card h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray-800);
  letter-spacing: -0.01em;
}

.tool-card p {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-weight: 300;
  line-height: 1.55;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
}

.tool-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--blue-600);
  background: var(--blue-50);
  padding: 0.18rem 0.5rem;
  border-radius: 1rem;
}

.tool-card-badge.coming-soon {
  color: var(--gray-500);
  background: var(--gray-100);
}

.tool-card-arrow {
  margin-left: auto;
  color: var(--gray-300);
  transition: all var(--transition);
}

.tool-card:hover .tool-card-arrow {
  color: var(--blue-500);
  transform: translateX(2px);
}

/* ═══════════════════════════════════════════════
   VINDOCS (Converter Page)
   ═══════════════════════════════════════════════ */

/* ─── Upload Zone ────────────────────────────── */

.upload-zone {
  border: 1.5px dashed var(--blue-200);
  border-radius: var(--radius);
  background: var(--gray-50);
  padding: 3rem 2rem;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--blue-400);
  background: var(--blue-50);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.06);
}

.upload-zone.dragover {
  transform: scale(1.005);
}

.upload-icon {
  color: var(--blue-400);
  margin-bottom: 1rem;
  opacity: 0.8;
}

.upload-text {
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--gray-600);
  margin-bottom: 0.35rem;
}

.upload-sub {
  font-size: 0.88rem;
  color: var(--gray-400);
}

.browse-btn {
  color: var(--blue-600);
  font-weight: 400;
  text-decoration: underline;
  text-underline-offset: 2px;
  font-size: 0.88rem;
}

.browse-btn:hover {
  color: var(--blue-700);
}

.upload-formats {
  font-size: 0.78rem;
  color: var(--gray-300);
  margin-top: 1rem;
  letter-spacing: 0.04em;
}

/* ─── File List (batch) ──────────────────────── */

.file-list {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  animation: slideIn 0.2s ease;
}

.file-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.file-count {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--blue-600);
}

.clear-all-btn {
  font-size: 0.78rem;
  color: var(--gray-400);
  transition: color var(--transition);
}

.clear-all-btn:hover {
  color: var(--gray-700);
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.9rem;
  transition: background var(--transition);
}

.file-item:not(:last-child) {
  border-bottom: 1px solid var(--gray-50);
}

.file-item:hover {
  background: var(--gray-50);
}

.file-item-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  flex: 1;
}

.file-item-left svg {
  color: var(--blue-400);
  flex-shrink: 0;
}

.file-name {
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--gray-700);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-size {
  font-size: 0.75rem;
  color: var(--gray-400);
  flex-shrink: 0;
}

.remove-btn {
  color: var(--gray-300);
  padding: 0.25rem;
  border-radius: 0.25rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

.remove-btn:hover {
  color: var(--gray-600);
  background: var(--gray-100);
}

/* ─── Convert Button ─────────────────────────── */

.convert-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.85rem 1.25rem;
  background: var(--blue-600);
  color: var(--white);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.convert-btn:hover:not(:disabled) {
  background: var(--blue-700);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.convert-btn:active:not(:disabled) {
  transform: translateY(0);
}

.convert-btn:disabled {
  background: var(--gray-200);
  color: var(--gray-400);
  cursor: not-allowed;
  box-shadow: none;
}

/* ─── Progress ───────────────────────────────── */

.progress-section {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.15rem;
  animation: slideIn 0.2s ease;
}

.progress-bar {
  height: 3px;
  background: var(--gray-100);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blue-400), var(--blue-600));
  border-radius: 2px;
  transition: width 0.3s ease;
  animation: progressPulse 1.8s ease-in-out infinite;
}

.progress-text {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-top: 0.6rem;
  text-align: center;
}

/* ─── Result ─────────────────────────────────── */

.result-section {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  animation: slideIn 0.3s ease;
  margin-bottom: 0.65rem;
}

.result-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--gray-100);
  gap: 0.5rem;
  flex-wrap: wrap;
  background: var(--gray-50);
}

.result-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.result-filename-input {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-800);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 0.25rem;
  padding: 0.15rem 0.35rem;
  max-width: 200px;
  outline: none;
  transition: all var(--transition);
}

.result-filename-input:hover {
  border-color: var(--gray-300);
  background: var(--white);
}

.result-filename-input:focus {
  border-color: var(--blue-400);
  background: var(--white);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.result-ext {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--gray-400);
  margin-left: -0.3rem;
}

.result-badge {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--blue-600);
  background: var(--blue-50);
  padding: 0.15rem 0.5rem;
  border-radius: 1rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.result-time {
  font-size: 0.72rem;
  color: var(--gray-400);
}

.result-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
  color: var(--gray-500);
  border-radius: 0.35rem;
  transition: all var(--transition);
}

.action-btn:hover {
  background: var(--white);
  color: var(--gray-700);
}

.action-btn.copied {
  color: var(--blue-600);
  background: var(--blue-50);
}

.view-toggle {
  display: flex;
  background: var(--white);
  border-radius: 0.35rem;
  overflow: hidden;
  border: 1px solid var(--gray-200);
}

.toggle-btn {
  padding: 0.3rem 0.65rem;
  font-size: 0.78rem;
  color: var(--gray-500);
  transition: all var(--transition);
}

.toggle-btn.active {
  background: var(--blue-50);
  color: var(--blue-600);
}

.toggle-btn:hover:not(.active) {
  color: var(--gray-700);
}

/* ─── Result Error ───────────────────────────── */

.result-error {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  padding: 0.6rem 0.9rem;
  margin-bottom: 0.65rem;
  animation: slideIn 0.2s ease;
}

.result-error svg { color: #ef4444; flex-shrink: 0; }
.result-error-name { font-size: 0.85rem; font-weight: 500; color: #991b1b; }
.result-error-msg { font-size: 0.78rem; color: #b91c1c; }

/* ─── Content Area ───────────────────────────── */

.result-content {
  max-height: 500px;
  overflow-y: auto;
}

.result-content::-webkit-scrollbar { width: 4px; }
.result-content::-webkit-scrollbar-track { background: transparent; }
.result-content::-webkit-scrollbar-thumb { background: var(--gray-200); border-radius: 2px; }

.markdown-raw {
  padding: 1.15rem;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--gray-700);
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--gray-50);
  margin: 0;
}

.markdown-preview {
  padding: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--gray-700);
}

.markdown-preview h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
  margin: 0 0 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--gray-100);
}

.markdown-preview h2 {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--gray-800);
  margin: 1.5rem 0 0.6rem;
}

.markdown-preview h3 {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--gray-700);
  margin: 1.15rem 0 0.5rem;
}

.markdown-preview p { margin: 0 0 0.85rem; }

.markdown-preview ul, .markdown-preview ol {
  margin: 0 0 0.85rem;
  padding-left: 1.35rem;
}

.markdown-preview li { margin: 0.25rem 0; }

.markdown-preview code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.85em;
  background: var(--gray-100);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  color: var(--blue-700);
}

.markdown-preview pre {
  background: var(--gray-800);
  color: var(--gray-100);
  padding: 1rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 0.85rem 0;
  font-size: 0.85rem;
}

.markdown-preview pre code { background: none; color: inherit; padding: 0; }

.markdown-preview table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.85rem 0;
  font-size: 0.88rem;
}

.markdown-preview th,
.markdown-preview td {
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--gray-200);
  text-align: left;
}

.markdown-preview th {
  background: var(--blue-50);
  font-weight: 500;
  color: var(--gray-700);
}

.markdown-preview blockquote {
  border-left: 3px solid var(--blue-300);
  padding: 0.5rem 0.85rem;
  margin: 0.85rem 0;
  color: var(--gray-600);
  background: var(--blue-50);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.markdown-preview strong { font-weight: 500; color: var(--gray-800); }
.markdown-preview hr { border: none; border-top: 1px solid var(--gray-200); margin: 1.15rem 0; }
.markdown-preview a { color: var(--blue-600); }
.markdown-preview a:hover { text-decoration: underline; }
.markdown-preview img { max-width: 100%; border-radius: var(--radius); }

/* ─── Error ──────────────────────────────────── */

.error-section {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  animation: slideIn 0.2s ease;
}

.error-section svg { color: #ef4444; flex-shrink: 0; }
.error-section p { font-size: 0.88rem; color: #991b1b; }

/* ─── Footer ─────────────────────────────────── */

.footer {
  padding: 1.5rem 0;
  text-align: center;
  border-top: 1px solid var(--gray-100);
  margin-top: 2rem;
}

.footer p {
  font-size: 0.78rem;
  color: var(--gray-400);
  font-weight: 300;
}

.footer a {
  color: var(--blue-500);
  font-weight: 400;
}

.footer a:hover { text-decoration: underline; }

/* ─── Animations ─────────────────────────────── */

@keyframes slideIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes progressPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ─── Toast ──────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--gray-800);
  color: var(--white);
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 400;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 100;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── Responsive ─────────────────────────────── */

@media (max-width: 600px) {
  html { font-size: 14px; }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }

  .tools-hero h1 { font-size: 1.6rem; }
  .tools-grid { grid-template-columns: 1fr; }
  .tools-stats { gap: 1.5rem; }

  .result-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .result-actions {
    width: 100%;
    justify-content: space-between;
  }

  .upload-zone { padding: 2.5rem 1rem; }
}