/* Compare PDF Tool */
.tool-breadcrumb { background: var(--gray-100); padding: 12px 0; }
.tool-breadcrumb .breadcrumb { margin: 0; font-size: 0.85rem; }
.tool-breadcrumb .breadcrumb-item a { color: var(--primary); }
.tool-header { padding: 50px 0 40px; background: linear-gradient(135deg, #e8f5e9, #c8e6c9); }
.tool-icon-large { width: 80px; height: 80px; border-radius: 20px; background: linear-gradient(135deg, #2ecc71, #27ae60); display: inline-flex; align-items: center; justify-content: center; color: white; font-size: 2rem; margin-bottom: 20px; box-shadow: 0 8px 25px rgba(46,204,113,0.3); }
.tool-header h1 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; }
.tool-desc { font-size: 1.05rem; color: var(--gray-600); max-width: 700px; margin: 0 auto; line-height: 1.7; }
.tool-workspace { padding: 40px 0 60px; }
.workspace-card { background: white; border-radius: 16px; box-shadow: 0 4px 20px rgba(0,0,0,0.08); padding: 40px; max-width: 900px; margin: 0 auto; }

/* Dual upload */
.upload-dual { display: flex; align-items: stretch; gap: 16px; margin-bottom: 16px; }
.upload-box { flex: 1; border: 3px dashed var(--gray-300); border-radius: 14px; padding: 30px 16px; text-align: center; transition: all 0.3s; background: var(--gray-100); min-height: 160px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.upload-box.has-file { border-color: #2ecc71; border-style: solid; background: rgba(46,204,113,0.03); }
.ub-icon { font-size: 2.5rem; color: var(--gray-400); margin-bottom: 8px; }
.upload-box.has-file .ub-icon { color: #e74c3c; }
.ub-label { font-size: 0.88rem; font-weight: 700; color: var(--gray-600); margin-bottom: 8px; }
.ub-file { display: flex; align-items: center; gap: 8px; }
.ub-file strong { font-size: 0.82rem; color: var(--dark); max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.upload-vs { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; color: var(--gray-400); font-size: 1.2rem; }
.upload-vs span { font-size: 0.75rem; font-weight: 800; }
.upload-hint { font-size: 0.8rem; color: var(--gray-500); }

/* Mode */
.mode-title { font-size: 1rem; font-weight: 700; margin-bottom: 14px; margin-top: 20px; padding-top: 16px; border-top: 2px solid var(--gray-200); }
.mode-cards { display: flex; gap: 14px; flex-wrap: wrap; }
.mode-card { flex: 1; min-width: 250px; display: flex; gap: 14px; padding: 18px; border: 2px solid var(--gray-200); border-radius: 14px; cursor: pointer; transition: all 0.2s; background: white; align-items: flex-start; }
.mode-card:hover { border-color: var(--gray-400); }
.mode-card.active { border-color: #2ecc71; background: rgba(46,204,113,0.03); box-shadow: 0 0 0 1px #2ecc71; }
.mc-icon { width: 44px; height: 44px; border-radius: 10px; background: var(--gray-100); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; color: var(--gray-500); flex-shrink: 0; }
.mode-card.active .mc-icon { background: #2ecc71; color: white; }
.mc-body { flex: 1; }
.mc-body strong { display: block; font-size: 0.95rem; color: var(--dark); margin-bottom: 4px; }
.mc-body p { font-size: 0.8rem; color: var(--gray-600); margin: 0; line-height: 1.4; }

.btn-convert { background: linear-gradient(135deg, #2ecc71, #27ae60); color: white; padding: 16px 48px; border-radius: 30px; font-weight: 700; font-size: 1.05rem; border: none; box-shadow: 0 4px 20px rgba(46,204,113,0.35); transition: all 0.3s; }
.btn-convert:hover { transform: translateY(-2px); color: white; }

.progress-area { padding: 40px 20px; }
.spinner-wrapper { position: relative; width: 100px; height: 100px; margin: 0 auto 24px; }
.spinner { width: 100px; height: 100px; border: 4px solid var(--gray-200); border-top-color: #2ecc71; border-radius: 50%; animation: spin 1s linear infinite; }
.spinner-wrapper > i { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 2rem; color: #2ecc71; }
@keyframes spin { to { transform: rotate(360deg); } }
.progress-area h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.progress-bar-wrapper { max-width: 500px; margin: 0 auto; }
.progress-bar-wrapper .progress { height: 12px; border-radius: 10px; background: var(--gray-200); }
.progress-bar-wrapper .progress-bar { background: linear-gradient(90deg, #2ecc71, #27ae60); border-radius: 10px; transition: width 0.3s; display: flex; align-items: center; justify-content: center; font-size: 0.65rem; font-weight: 700; color: white; }

.download-area { padding: 40px 20px; }
.download-icon { font-size: 4rem; color: #2ecc71; margin-bottom: 20px; }
.download-area h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; }
.download-area > p { color: var(--gray-600); margin-bottom: 24px; }
.btn-download { background: linear-gradient(135deg, #2ecc71, #27ae60); color: white; padding: 16px 40px; border-radius: 30px; font-weight: 700; display: inline-flex; align-items: center; box-shadow: 0 4px 20px rgba(46,204,113,0.35); }
.btn-download:hover { color: white; transform: translateY(-2px); }
.download-info { margin-top: 24px; }
.countdown-wrapper { font-size: 0.95rem; margin-bottom: 8px; }
.countdown-wrapper strong { color: var(--primary); font-size: 1.1rem; font-family: monospace; }
.download-warning { font-size: 0.82rem; color: var(--gray-500); }
.error-area { padding: 40px 20px; }
.error-icon { font-size: 4rem; color: var(--primary); margin-bottom: 20px; }

.tool-howto { padding: 60px 0; background: var(--gray-100); }
.tool-howto h2 { font-size: 1.6rem; font-weight: 800; }
.howto-step { text-align: center; padding: 24px; }
.howto-number { width: 48px; height: 48px; background: #2ecc71; color: white; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.2rem; margin-bottom: 16px; }
.howto-step h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.howto-step p { font-size: 0.9rem; color: var(--gray-600); line-height: 1.6; }

@media (max-width: 767.98px) { .workspace-card { padding: 24px 16px; } .upload-dual { flex-direction: column; } .upload-vs { flex-direction: row; } .btn-convert { width: 100%; } .tool-header h1 { font-size: 1.5rem; } .mode-cards { flex-direction: column; } }