:root{--button-bg: #f8fafc;--button-border: #cbd5f5;--button-color: #475569;--button-hover-bg: #eef2ff;--button-hover-border: #a5b4fc;--button-hover-color: #1f2937;--button-focus-ring: rgba(37, 99, 235, .5);--button-shadow: 0 1px 2px rgba(15, 23, 42, .08);--button-primary-bg: #4f46e5;--button-primary-border: #4338ca;--button-primary-color: #ffffff;--button-primary-hover-bg: #4338ca;--button-primary-hover-border: #3730a3;--accent-button-bg: #2563eb;--accent-button-color: #ffffff;--accent-button-disabled-opacity: .7}:root{--span-icon-color: #1d4ed8;--span-connector-color: #8da2fd;--span-connector-highlight-color: #5465d6}:root{--input-border: #cbd5f5;--input-border-focus: #818cf8;--input-shadow-focus: rgba(129, 140, 248, .2);--input-bg-disabled: #f1f5f9;--input-text-disabled: #94a3b8}.ds-button{border-radius:10px;font-size:.95rem;font-weight:600;padding:10px 16px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;font-family:inherit}.ds-button:disabled{opacity:.6;cursor:not-allowed;transform:none}.ds-button--neutral{border-color:var(--button-border, #cbd5f5);background:var(--button-bg, #f8fafc);color:var(--button-color, #475569);box-shadow:var(--button-shadow, 0 1px 2px rgba(15, 23, 42, .08))}.ds-button--neutral:not(:disabled):hover{background:var(--button-hover-bg, #eef2ff);border-color:var(--button-hover-border, #a5b4fc);color:var(--button-hover-color, #1f2937);box-shadow:var(--button-hover-shadow, 0 6px 18px rgba(15, 23, 42, .12))}.ds-button--neutral:focus-visible{outline:none;box-shadow:0 0 0 2px var(--button-focus-ring, rgba(37, 99, 235, .35))}.ds-button--accent{background:var(--accent-button-bg, #2563eb);color:var(--accent-button-color, #ffffff);border:none}.ds-button--accent:not(:disabled):hover{filter:brightness(.96);box-shadow:0 6px 18px #2563eb38}.ds-button--ghost{border-color:var(--button-border, #cbd5f5);background:var(--button-bg, #f8fafc);color:var(--button-color, #475569)}.ds-button--ghost:not(:disabled):hover{background:var(--button-hover-bg, #eef2ff);border-color:var(--button-hover-border, #a5b4fc);color:var(--button-hover-color, #1f2937);box-shadow:var(--button-hover-shadow, 0 6px 18px rgba(15, 23, 42, .12))}.ds-button--ghost:focus-visible{outline:none;box-shadow:0 0 0 2px var(--button-focus-ring, rgba(37, 99, 235, .35))}.ds-button--plain{border:none;background:transparent;box-shadow:none;color:var(--button-color, #475569)}.ds-button--plain:not(:disabled):hover{background:transparent;color:var(--button-hover-color, #1f2937)}.ds-button--icon{width:40px;height:40px;padding:0;border-radius:12px}.ds-button--icon:focus-visible{outline:none;box-shadow:0 0 0 2px var(--button-focus-ring, rgba(37, 99, 235, .3))}.ds-button--icon-small{width:38px;height:38px;padding:0}.ds-button--icon-plain{width:36px;height:36px;padding:0;border:none;background:transparent;box-shadow:none;border-radius:50%;color:var(--button-color, #475569)}.ds-button--icon-plain:disabled{opacity:.6;cursor:not-allowed}.ds-button--icon-plain:not(:disabled):hover{background:#6366f114;color:var(--button-hover-color, #1f2937)}.ds-button--icon-plain:focus-visible{outline:none;box-shadow:0 0 0 1.5px #94a3b8b3}.ds-input{width:100%;border:1px solid var(--input-border);border-radius:10px;padding:10px 12px;font-size:.95rem;font-family:inherit;background:#fff;color:#0f172a}.ds-input:focus{outline:none;border-color:var(--input-border-focus);box-shadow:0 0 0 2px var(--input-shadow-focus)}.ds-input:disabled{background:var(--input-bg-disabled);color:var(--input-text-disabled);cursor:not-allowed}.ds-icon{width:20px;height:20px;stroke:currentColor;fill:none;flex-shrink:0}.app-shell{width:100%;min-height:100vh;padding:32px;display:flex;flex-direction:column;gap:24px}.app-header{display:flex;flex-direction:column;align-items:stretch;gap:12px;padding:20px 28px;border-radius:24px;background:linear-gradient(135deg,#fff,#f8fafc);border:1px solid #e2e8f0;color:#0f172a;box-shadow:0 12px 30px #0f172a14}.app-header__top-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.app-header__brand{display:inline-flex;align-items:center;gap:18px}.app-header__brand-text{display:flex;flex-direction:column;gap:6px;line-height:1}.app-header__brand-text h1{margin:0;font-size:1.75rem;letter-spacing:.04em;font-weight:600;color:#102347}.app-header__brand-text p{margin:0;font-size:.82rem;letter-spacing:.18em;text-transform:uppercase;color:#5f6f90;font-weight:500}.app-header__logo{position:relative;width:56px;height:56px}.app-header__logo-outer,.app-header__logo-inner{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%}.app-header__logo-outer{border:2px dashed #94a3b8;box-shadow:0 4px 12px #0f172a0d inset}.app-header__logo-inner{width:26px;height:26px;background:#1d4ed8;top:50%;left:50%;transform:translate(-50%,-50%)}.app-header__project-context{width:100%;display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding-top:10px;border-top:1px solid #e2e8f0}.app-header__project-name{max-width:100%;color:#0f172a;font-size:1rem;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.app-header__breadcrumbs{display:flex;align-items:flex-start;flex-wrap:wrap;gap:4px;width:100%;line-height:1.35;max-height:calc(1.35em * 3 + 8px);overflow:auto;padding-right:4px;color:#64748b;font-size:.78rem}.app-header__breadcrumb-group{display:inline-flex;align-items:center;gap:4px;max-width:100%}.app-header__breadcrumb{color:#64748b;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.app-header__breadcrumb-button{border:none;margin:0;padding:0;background:transparent;color:#64748b;font:inherit;line-height:inherit;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer}.app-header__breadcrumb-button:hover{color:#334155;text-decoration:underline;text-underline-offset:2px}.app-header__breadcrumb-button:focus-visible{outline:none;border-radius:4px;box-shadow:0 0 0 2px #6366f140}.app-header__breadcrumb--current,.app-header__breadcrumb-button--current{color:#1e3a8a;font-weight:600}.app-header__breadcrumb--muted,.app-header__breadcrumb-separator{color:#94a3b8}.app-header__controls{display:inline-flex;align-items:center;gap:8px}.app-header__switch-project-button{--button-color: #0f172a;--button-hover-color: #1f2937;--button-hover-bg: #eef2ff;--button-hover-border: #c7d2fe}.app-header__switch-project-button.ds-button--neutral:not(:disabled):hover{transform:none;box-shadow:0 6px 18px #0f172a1f}.app-header__switch-project-button.ds-button--neutral:active:not(:disabled){transform:none}.app-header__switch-project-icon{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.project-selector{background:#fff;border:1px solid #e2e8f0;border-radius:20px;box-shadow:0 15px 35px #0f172a14;padding:20px;display:flex;flex-direction:column;gap:12px}.project-selector__header{display:flex;align-items:center;justify-content:space-between;gap:12px}.project-selector__header h2{margin:0;font-size:1.2rem}.project-selector__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.project-selector__item{border:1px solid #e2e8f0;border-radius:14px;padding:12px;display:flex;justify-content:space-between;align-items:center;gap:12px}.project-selector__item--interactive{cursor:pointer;transition:border-color .15s ease,background-color .15s ease,box-shadow .15s ease}.project-selector__item--interactive:hover{border-color:#c7d2fe;background:#f8fafc}.project-selector__item--interactive:focus-visible{outline:none;border-color:#818cf8;box-shadow:0 0 0 2px #6366f133}.project-selector__item--interactive[aria-disabled=true]{cursor:default;opacity:.8}.project-selector__item-main{min-width:0}.project-selector__item-main p{margin:4px 0 0}.project-selector__item-actions{display:flex;align-items:center;gap:8px;margin-left:auto}.project-selector__action-button{--button-color: #334155;--button-hover-color: #0f172a;--button-hover-bg: #eef2ff;--button-hover-border: #c7d2fe}.project-selector__action-button--danger{--button-color: #b91c1c;--button-hover-color: #991b1b;--button-hover-bg: #fef2f2;--button-hover-border: #fecaca}.project-selector__action-icon{width:18px;height:18px;stroke:currentColor;fill:none}.project-selector__hint{margin:0;color:#475569}.project-selector__error{margin:0;color:#b91c1c}.app-header__logout-button{border:1px solid #dbeafe;background:#f8fafc;color:#0f172a;width:40px;height:40px;border-radius:12px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:0;box-shadow:0 1px 2px #0f172a14}.app-header__logout-button:hover:not(:disabled){background:#eef2ff;border-color:#c7d2fe;box-shadow:0 6px 18px #0f172a1f}.app-header__logout-button:active:not(:disabled){transform:translateY(1px)}.app-header__logout-button:disabled{opacity:.7;cursor:default}.app-header__logout-button:focus-visible{outline:none;box-shadow:0 0 0 2px #6366f159}.app-header__error{font-size:.85rem;color:#b91c1c}.app-header__logout-icon{width:18px;height:18px;stroke:currentColor}h1{margin:0 0 12px;font-size:1.75rem;color:#0f172a}p{margin:0;color:#475569;line-height:1.5}.chart-wrapper{flex:1;background:#fff;border-radius:20px;padding:16px;box-shadow:0 15px 35px #0f172a14;display:flex;flex-direction:column;gap:12px}.chart-wrapper__actions{display:flex;align-items:center;gap:12px;padding:10px 14px;border:1px solid #e2e8f0;border-radius:14px;background:#f8fafc;box-shadow:0 10px 30px #0f172a14}.chart-wrapper__actions-group{display:flex;align-items:center;gap:10px}.chart-wrapper__actions-group--right{margin-left:auto}.chart-wrapper__add-span{color:var(--chart-add-icon-color, var(--button-color, #475569))}.chart-wrapper__add-span-icon,.chart-wrapper__fullscreen-icon{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.chart-wrapper--fullscreen{border-radius:0;box-shadow:none;padding:24px;height:100%;width:100%;gap:16px}.app-footer{color:#475569;display:flex;flex-direction:column;gap:8px;font-size:.85rem;margin-top:auto;padding:16px 12px 0;border-top:1px solid #e2e8f0;background:transparent}.app-footer__owner{display:flex;flex-wrap:wrap;gap:8px;align-items:baseline}.app-footer__owner-value{font-weight:400}.app-footer__links{display:flex;flex-wrap:wrap;gap:16px}.app-footer__links a{color:#1d4ed8;text-decoration:none;font-weight:500}.app-footer__links a:hover,.app-footer__links a:focus-visible{text-decoration:underline}.app-footer__copyright{font-size:.8rem;color:#94a3b8}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0;white-space:nowrap}.workspace-panel{display:flex;flex-direction:column;gap:0;padding-top:4px;overflow:visible}.workspace-panel__body{padding-top:8px}.workspace-panel__view[hidden]{display:none}@media (max-width: 720px){.app-shell{padding:20px}.app-header{padding:18px;border-radius:20px}.app-header__top-row{width:100%;gap:10px}.app-header__project-context{padding-top:8px}.app-header__breadcrumbs{max-height:calc(1.35em * 3 + 6px)}.app-header__controls{margin-left:auto;justify-content:flex-end}.app-header__error{width:100%}}.dialog-form-actions{display:flex;justify-content:flex-end;gap:12px}.dialog-close-button{margin-left:auto;display:inline-flex;align-items:center;justify-content:center}.dialog-close-button__icon{width:22px;height:22px;stroke:currentColor;fill:none}.dialog-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a8c;display:flex;align-items:center;justify-content:center;padding:24px;z-index:1000}.dialog-modal__card{background:#fff;border-radius:24px;width:min(var(--dialog-modal-max-width, 720px),100%);max-height:var(--dialog-modal-max-height, 90vh);overflow:auto;padding:28px;box-shadow:0 25px 60px #0f172a59;display:flex;flex-direction:column;gap:20px}.dialog-modal__header{display:flex;gap:16px;align-items:flex-start}.dialog-modal__header h2{margin:0 0 6px}.dialog-modal__description{margin:0;color:#475569}.dialog-modal__close{margin-left:auto;flex:0 0 auto;width:40px;height:40px;padding:0;border-radius:50%}.dialog-modal__close:disabled{cursor:not-allowed}.ds-select{width:100%;border:1px solid var(--input-border);border-radius:10px;padding:10px 36px 10px 12px;font-size:.95rem;font-family:inherit;background:#fff;color:#0f172a;cursor:default}.ds-select--editable{cursor:text}.ds-select:focus{outline:none;border-color:var(--input-border-focus);box-shadow:0 0 0 2px var(--input-shadow-focus)}.ds-select:disabled,.ds-select--editable:disabled{background:var(--input-bg-disabled);color:var(--input-text-disabled);cursor:not-allowed}.ds-select__wrapper{position:relative;width:100%}.ds-select__wrapper .ds-select{width:100%}.ds-select__value-input{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);border:0;white-space:nowrap}.ds-select__toggle{position:absolute;top:0;right:0;width:40px;height:100%;border:none;background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center}.ds-select__toggle span{width:12px;height:8px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2363748b' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat}.ds-select__toggle:disabled{cursor:not-allowed;opacity:.4}.ds-select__dropdown{position:absolute;left:0;right:0;z-index:20;margin-top:6px;background:#fff;border:1px solid var(--input-border);border-radius:12px;box-shadow:0 20px 45px #0f172a26;max-height:220px;overflow-y:auto;padding:6px 0}.ds-select__option{width:100%;border:none;background:transparent;padding:8px 14px;text-align:left;font:inherit;color:inherit;cursor:pointer}.ds-select__option:hover,.ds-select__option:focus-visible{background:#63748b14;outline:none}.ds-select__option:disabled{cursor:not-allowed;color:#0f172a66}.ds-select__option--empty{color:#64748b;cursor:default}.add-operation-form{display:flex;flex-direction:column;gap:18px}.add-operation-form__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.add-operation-form__field{display:flex;flex-direction:column;gap:8px;font-size:.9rem;color:#1f2937}.add-operation-form__field label{font-weight:600;color:#0f172a}.add-operation-form__field-error{color:#c2410c;font-size:.8rem}.add-operation-form__textarea{resize:vertical;min-height:120px}.add-operation-form__status{border-radius:12px;padding:10px 14px;font-weight:600}.add-operation-form__status--error{background:#fee2e2;color:#b91c1c}.add-operation-form__status--success{background:#dcfce7;color:#15803d}.add-node-form{display:flex;flex-direction:column;gap:18px}.add-node-form__field{display:flex;flex-direction:column;gap:8px;font-size:.9rem;color:#1f2937}.add-node-form__field label{font-weight:600;color:#0f172a}.add-node-form__field-error{color:#c2410c;font-size:.8rem}.add-node-form__textarea{resize:vertical;min-height:120px}.add-node-form__status{border-radius:12px;padding:10px 14px;font-weight:600}.add-node-form__status--error{background:#fee2e2;color:#b91c1c}.add-node-form__status--success{background:#dcfce7;color:#15803d}.add-relay-form{display:flex;flex-direction:column;gap:18px}.add-relay-form__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.add-relay-form__field{display:flex;flex-direction:column;gap:8px;font-size:.9rem;color:#1f2937}.add-relay-form__field 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h3{margin:0;font-size:1.1rem;color:#0f172a}.info-panel__item{margin-bottom:12px}.info-panel__item:last-of-type{margin-bottom:0}.info-panel__item dt{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:#64748b;margin-bottom:4px}.info-panel__item dd{margin:0;font-size:.95rem;color:#0f172a}.info-panel__error{color:#b91c1c}.switch-field{display:flex;align-items:center;gap:12px;cursor:pointer;color:#0f172a}.switch-field__input{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:44px;height:24px;border-radius:999px;border:1px solid #cbd5e1;background:#e2e8f0;position:relative;cursor:pointer;transition:background-color .2s ease,border-color .2s ease;flex-shrink:0}.switch-field__input:before{content:"";position:absolute;left:2px;top:2px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 2px #0f172a40;transition:transform .2s ease}.switch-field__input:checked{background:#2563eb;border-color:#2563eb}.switch-field__input:checked:before{transform:translate(20px)}.switch-field__input:focus-visible{outline:none;box-shadow:0 0 0 2px #2563eb40}.switch-field__input:disabled{opacity:.7;cursor:not-allowed}.switch-field__input:disabled+.switch-field__label{opacity:.7}.switch-field__label{font-size:.95rem;line-height:1.35}.add-project-form{display:flex;flex-direction:column;gap:18px}.add-project-form__field{display:flex;flex-direction:column;gap:8px;font-size:.9rem;color:#1f2937}.add-project-form__field label{font-weight:600;color:#0f172a}.add-project-form__field-error{color:#c2410c;font-size:.8rem}.add-project-form__textarea{resize:vertical;min-height:120px}.add-project-form__status{border-radius:12px;padding:10px 14px;font-weight:600}.add-project-form__status--error{background:#fee2e2;color:#b91c1c}.delete-project-dialog{display:flex;flex-direction:column;gap:18px}.delete-project-dialog__text{margin:0;color:#0f172a}.delete-project-dialog__status{border-radius:12px;padding:10px 14px;font-weight:600}.delete-project-dialog__status--error{background:#fee2e2;color:#b91c1c}.delete-project-dialog__actions{display:flex;justify-content:flex-end;gap:12px}.delete-project-dialog__submit{--accent-button-bg: #dc2626;--accent-button-color: #ffffff}.delete-project-dialog__submit:not(:disabled):hover{--accent-button-bg: #b91c1c}.edit-project-form{display:flex;flex-direction:column;gap:18px}.edit-project-form__field{display:flex;flex-direction:column;gap:8px;font-size:.9rem;color:#1f2937}.edit-project-form__field 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