.picbase64-tool .picbase64-layout{align-items: flex-start;row-gap: 16px}.picbase64-input-panel,.picbase64-result-panel{min-width: 0;height: 100%}.picbase64-panel-header{gap: 12px}.picbase64-panel-header>span:first-child{flex: 1;min-width: 0}.picbase64-panel-header i{margin-right: 6px}.picbase64-limit,.picbase64-status{flex: 0 1 auto;min-width: 0;color: var(--text-3);font-size: 12.5px;font-weight: 500;text-align: right}.picbase64-input-body,.picbase64-result-body{gap: 14px}.picbase64-dropzone{position: relative;display: flex;min-height: 230px;flex-direction: column;align-items: center;justify-content: center;gap: 9px;padding: 24px;border: 1.5px dashed var(--border-strong);border-radius: var(--radius);background: var(--bg-soft);color: var(--text-2);text-align: center;cursor: pointer;transition: border-color .15s,background .15s,color .15s,box-shadow .15s}.picbase64-dropzone:hover,.picbase64-dropzone.is-dragging,.picbase64-dropzone:focus-visible{border-color: var(--primary);background: var(--primary-soft);color: var(--primary);outline: none;box-shadow: 0 0 0 3px var(--primary-ring)}.picbase64-dropzone input{position: absolute;width: 1px;height: 1px;opacity: 0;pointer-events: none}.picbase64-dropzone i{color: var(--primary);font-size: 42px;line-height: 1}.picbase64-dropzone strong{color: var(--text);font-size: 18px;line-height: 1.25}.picbase64-dropzone span{max-width: 320px;color: var(--text-2);font-size: 13.5px;line-height: 1.45}.picbase64-action-row{display: flex;flex-wrap: wrap;gap: 8px}.picbase64-action-row .btn{justify-content: center}.picbase64-message,.picbase64-url-error{display: flex;align-items: flex-start;gap: 8px;padding: 10px 12px;border: 1px solid #fecaca;border-radius: var(--radius);background: var(--danger-soft);color: var(--danger);font-size: 13.5px;line-height: 1.45}.picbase64-note{padding: 12px;border: 1px solid rgba(8,145,178,.26);border-radius: var(--radius);background: var(--info-soft);color: var(--text-2);font-size: 13.5px;line-height: 1.5}.picbase64-empty{display: flex;min-height: 400px;flex-direction: column;align-items: center;justify-content: center;gap: 10px;padding: 28px;border: 1px dashed var(--border);border-radius: var(--radius);background: var(--bg-soft);color: var(--text-3);text-align: center}.picbase64-empty i{font-size: 34px;line-height: 1}.picbase64-empty span{max-width: 360px;font-size: 14px;line-height: 1.5}.picbase64-result{display: flex;min-width: 0;flex-direction: column;gap: 14px}.picbase64-preview-grid{display: grid;grid-template-columns: minmax(160px,.9fr) minmax(0,1.4fr);gap: 14px}.picbase64-preview{display: flex;min-height: 210px;align-items: center;justify-content: center;padding: 12px;border: 1px solid var(--border);border-radius: var(--radius);background: linear-gradient(45deg,rgba(148,163,184,.16) 25%,transparent 25%),linear-gradient(-45deg,rgba(148,163,184,.16) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,rgba(148,163,184,.16) 75%),linear-gradient(-45deg,transparent 75%,rgba(148,163,184,.16) 75%);background-color: #fff;background-position: 0 0,0 8px,8px -8px,-8px 0;background-size: 16px 16px}.picbase64-preview img{display: block;max-width: 100%;max-height: 230px;object-fit: contain}.picbase64-meta{display: grid;grid-template-columns: repeat(2,minmax(0,1fr));gap: 10px;margin: 0}.picbase64-meta div{min-width: 0;padding: 10px 12px;border: 1px solid var(--border);border-radius: var(--radius);background: var(--bg-soft)}.picbase64-meta dt{margin: 0 0 3px;color: var(--text-3);font-size: 12.5px;line-height: 1.35}.picbase64-meta dd{overflow: hidden;margin: 0;color: var(--text);font-size: 13.5px;font-weight: 600;line-height: 1.35;text-overflow: ellipsis;white-space: nowrap}.picbase64-output-stack{display: flex;min-width: 0;flex-direction: column;gap: 12px}.picbase64-output{display: flex;min-width: 0;flex-direction: column;gap: 7px;margin: 0}.picbase64-output>span{display: flex;align-items: center;justify-content: space-between;gap: 10px}.picbase64-output strong{min-width: 0;color: var(--text-2);font-size: 13.5px;line-height: 1.35}.picbase64-output textarea.form-control{min-height: 90px;max-height: 180px;font-family: var(--mono);font-size: 12.5px;line-height: 1.45;resize: vertical}.picbase64-dialog{position: fixed;inset: 0;z-index: 260;display: flex;align-items: center;justify-content: center;padding: 18px}.picbase64-dialog-backdrop{position: absolute;inset: 0;background: rgba(17,24,39,.52)}.picbase64-dialog-panel{position: relative;display: flex;width: min(560px,100%);flex-direction: column;gap: 14px;padding: 18px;border: 1px solid var(--border);border-radius: var(--radius-lg);background: #fff;box-shadow: var(--shadow-lg)}.picbase64-dialog-header{display: flex;align-items: center;justify-content: space-between;gap: 12px}.picbase64-dialog-header h2{margin: 0;color: var(--text);font-size: 18px;line-height: 1.3}.picbase64-icon-button{display: inline-flex;width: 36px;height: 36px;align-items: center;justify-content: center;border: 1px solid var(--border);border-radius: var(--radius);background: #fff;color: var(--text-2);cursor: pointer}.picbase64-icon-button:hover{border-color: var(--primary);background: var(--primary-soft);color: var(--primary)}.picbase64-url-field{display: flex;flex-direction: column;gap: 6px;margin: 0;color: var(--text-2);font-size: 13.5px;font-weight: 600}.picbase64-dialog-actions{display: flex;justify-content: flex-end;gap: 8px}:root[data-theme="dark"] .picbase64-dropzone,:root[data-theme="dark"] .picbase64-empty,:root[data-theme="dark"] .picbase64-meta div{background: #161b18}:root[data-theme="dark"] .picbase64-preview,:root[data-theme="dark"] .picbase64-dialog-panel,:root[data-theme="dark"] .picbase64-icon-button{background-color: #181d1a}:root[data-theme="dark"] .picbase64-message,:root[data-theme="dark"] .picbase64-url-error{border-color: #7f1d1d;background: rgba(127,29,29,.18)}@media (max-width: 991px){.picbase64-preview-grid{grid-template-columns: 1fr}.picbase64-empty{min-height: 280px}}@media (max-width: 640px){.picbase64-panel-header{display: grid;grid-template-columns: minmax(0,1fr);row-gap: 6px}.picbase64-limit,.picbase64-status{text-align: left}.picbase64-action-row,.picbase64-meta{display: grid;grid-template-columns: 1fr}.picbase64-action-row .btn,.picbase64-dialog-actions .btn{width: 100%;min-width: 0}.picbase64-dialog-actions{display: grid;grid-template-columns: 1fr}.picbase64-dropzone{min-height: 190px;padding: 18px 14px}.picbase64-output>span{align-items: stretch;flex-direction: column}.picbase64-output .btn{width: 100%}.picbase64-input-body,.picbase64-result-body{padding: 14px}}