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

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f6f8;
  color: #111827;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  background: #0f172a;
  color: #f9fafb;
  border-bottom: 1px solid rgba(148, 163, 184, 0.4);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 16px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #22c55e, #059669);
  color: #ecfdf3;
  font-weight: 700;
  font-size: 14px;
}

.logo-text {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.nav-link {
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: #e5e7eb;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover {
  background: rgba(148, 163, 184, 0.16);
  border-color: rgba(148, 163, 184, 0.4);
}

.nav-link.active {
  background: #f9fafb;
  color: #0f172a;
  border-color: transparent;
}

.main-content {
  flex: 1;
  padding: 24px 0 40px;
}

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 3.2fr) minmax(0, 1.1fr);
  gap: 20px;
  align-items: flex-start;
}

.tool-card {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.06);
  padding: 24px 22px 24px;
  border: 1px solid #e5e7eb;
}

.tool-header h1 {
  margin: 0 0 6px;
  font-size: 24px;
  letter-spacing: 0.01em;
}

.tool-subtitle {
  margin: 0;
  color: #4b5563;
  font-size: 15px;
}

.upload-area {
  margin-top: 20px;
  border-radius: 14px;
  border: 1.5px dashed #cbd5e1;
  background: linear-gradient(135deg, #f9fafb, #eef2ff);
  min-height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, transform 0.08s ease;
}

.upload-area.dragover {
  border-color: #22c55e;
  box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.25);
  background: linear-gradient(135deg, #ecfdf3, #e0f2fe);
  transform: translateY(-1px);
}

.upload-inner {
  text-align: center;
  padding: 24px 16px;
}

.upload-icon {
  font-size: 34px;
  margin-bottom: 6px;
}

.upload-title {
  margin: 0;
  font-weight: 600;
  font-size: 15px;
}

.upload-subtitle {
  margin: 4px 0;
  color: #6b7280;
  font-size: 13px;
}

.upload-hint {
  margin-top: 10px;
  color: #6b7280;
  font-size: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: none;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.08s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #ecfdf3;
  box-shadow: 0 8px 20px rgba(34, 197, 94, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #16a34a, #15803d);
  box-shadow: 0 10px 24px rgba(22, 163, 74, 0.34);
  transform: translateY(-1px);
}

.btn-primary:disabled {
  background: #d1d5db;
  color: #6b7280;
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.btn-download {
  width: 100%;
  margin-top: 4px;
  font-size: 16px;
  padding: 12px 20px;
  text-align: center;
  text-decoration: none;
}

.hidden {
  display: none !important;
}

.btn-secondary {
  background: #ffffff;
  color: #111827;
  border: 1px solid #d1d5db;
}

.btn-secondary:hover {
  background: #f3f4f6;
}

.files-section {
  margin-top: 22px;
}

.section-header h2 {
  margin: 0 0 4px;
  font-size: 18px;
}

.section-header p {
  margin: 0;
  color: #6b7280;
  font-size: 13px;
}

.file-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  max-height: 260px;
  overflow-y: auto;
  border-radius: 10px;
  border: 1px solid #e5e7eb;
  background: #f9fafb;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  font-size: 13px;
  border-bottom: 1px solid #e5e7eb;
  background: #ffffff;
  cursor: grab;
  transition: background 0.1s ease, box-shadow 0.1s ease, transform 0.08s ease;
}

.file-item:last-child {
  border-bottom: none;
}

.file-item.dragging {
  opacity: 0.88;
  background: #ecfdf3;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
  transform: scale(1.01);
}

.file-main {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.file-icon {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: #eef2ff;
  color: #4f46e5;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.file-name {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  color: #6b7280;
  font-size: 11px;
}

.file-handle {
  color: #9ca3af;
  font-size: 16px;
  flex-shrink: 0;
}

.action-section {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.progress-wrapper {
  display: none;
  flex-direction: column;
  gap: 6px;
}

.progress-wrapper.visible {
  display: flex;
}

.progress-label {
  font-size: 13px;
  color: #4b5563;
}

.progress-bar {
  width: 100%;
  height: 9px;
  border-radius: 999px;
  background: #e5e7eb;
  overflow: hidden;
}

.progress-bar-inner {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, #22c55e, #0ea5e9);
  transition: width 0.2s ease-out;
}

.helper-text {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed #e5e7eb;
}

.helper-text h3 {
  margin: 0 0 6px;
  font-size: 15px;
}

.helper-text ul {
  margin: 0;
  padding-left: 18px;
  color: #4b5563;
  font-size: 13px;
}

.helper-text li + li {
  margin-top: 4px;
}

.ads-placeholder {
  border-radius: 14px;
  background: repeating-linear-gradient(
    -45deg,
    #e5e7eb,
    #e5e7eb 6px,
    #d1d5db 6px,
    #d1d5db 12px
  );
  color: #4b5563;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
}

.ads-placeholder span {
  background: rgba(249, 250, 251, 0.8);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
}

.ads-placeholder.vertical {
  min-height: 280px;
}

.ads-placeholder.horizontal {
  min-height: 90px;
  margin-top: 24px;
}

.ads-bottom {
  margin-top: 10px;
}

/* AdSense placeholders ocultos até aprovação da conta */
.ads-placeholder,
.ads-bottom {
  display: none !important;
}

.layout-grid {
  grid-template-columns: minmax(0, 1fr) !important;
}

.site-footer {
  border-top: 1px solid #e5e7eb;
  background: #f9fafb;
  padding: 14px 0 18px;
  font-size: 12px;
  color: #6b7280;
}

.footer-content {
  text-align: center;
  line-height: 1.5;
}

/* Responsividade */
@media (max-width: 960px) {
  .layout-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .ads-placeholder.vertical {
    min-height: 80px;
    order: 1;
  }

  .tool-card {
    order: 0;
  }
}

@media (max-width: 640px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .logo-text {
    font-size: 16px;
  }

  .tool-card {
    padding: 18px 16px 20px;
  }

  .tool-header h1 {
    font-size: 20px;
  }

  .upload-area {
    min-height: 150px;
  }

  .file-item {
    padding: 9px 10px;
  }
}

/* SEO / FAQ */
.seo-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
  line-height: 1.6;
  padding: 20px;
}

.seo-inner h2 {
  margin: 0 0 14px;
  font-size: 22px;
  letter-spacing: 0.01em;
}

.seo-inner h3 {
  margin: 18px 0 10px;
  font-size: 16px;
}

.seo-inner p {
  margin: 0 0 12px;
  color: #374151;
  font-size: 14px;
}

.seo-inner ol {
  margin: 0 0 12px;
  padding-left: 18px;
  color: #374151;
  font-size: 14px;
}

.seo-inner li {
  margin: 6px 0;
}

.seo-inner dl {
  margin: 0;
}

.seo-inner dt {
  font-weight: 700;
  margin-top: 14px;
  color: #111827;
  font-size: 14px;
}

.seo-inner dd {
  margin: 6px 0 0;
  color: #374151;
  font-size: 14px;
}

/* Rodapé minimalista */
.footer-minimal {
  text-align: center;
}

.footer-links {
  font-size: 13px;
  line-height: 1.6;
  opacity: 0.95;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.footer-links a {
  color: #f8f9fa;
  text-decoration: underline;
}

.footer-sep {
  opacity: 0.8;
}

.footer-copyright {
  margin-top: 10px;
  font-size: 12px;
  opacity: 0.95;
}

.footer-extra {
  display: none !important;
  margin-top: 10px;
  font-size: 12px;
  opacity: 0.95;
  line-height: 1.6;
}

.footer-extra p {
  margin: 8px 0 0;
}

.footer-extra a {
  color: #f8f9fa;
  text-decoration: underline;
}