/* =============================================
   A.N.D.R.E. — Animations & Transitions
   ============================================= */

/* ---- Node Appear ---- */
@keyframes nodeAppear {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }

    70% {
        transform: scale(1.08);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.node-group.entering {
    animation: nodeAppear 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    transform-origin: center;
}

/* ---- Node Delete ---- */
@keyframes nodeDisappear {
    0% {
        opacity: 1;
        transform: scale(1);
    }

    100% {
        opacity: 0;
        transform: scale(0.4);
    }
}

.node-group.leaving {
    animation: nodeDisappear 0.25s ease-in forwards;
    transform-origin: center;
    pointer-events: none;
}

/* ---- Connection Draw ---- */
@keyframes connectionDraw {
    from {
        stroke-dashoffset: 1000;
    }

    to {
        stroke-dashoffset: 0;
    }
}

.connection-path.drawing {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: connectionDraw 0.4s ease forwards;
}

/* ---- Pulse on select ---- */
@keyframes selectPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.5);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(124, 58, 237, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(124, 58, 237, 0);
    }
}

/* ---- Ripple on click ---- */
@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 0.6;
    }

    100% {
        transform: scale(4);
        opacity: 0;
    }
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(124, 58, 237, 0.3);
    width: 40px;
    height: 40px;
    margin-left: -20px;
    margin-top: -20px;
    animation: ripple 0.6s ease-out forwards;
    pointer-events: none;
}

/* ---- Sidebar slide in ---- */
@keyframes sidebarContentIn {
    from {
        opacity: 0;
        transform: translateX(10px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.node-properties {
    animation: sidebarContentIn 0.2s ease;
}

/* ---- Toolbar button press ---- */
.tool-btn:active,
.btn-icon:active,
.btn-primary:active {
    transform: scale(0.95);
}

/* ---- Glow pulse on brand ---- */
@keyframes brandGlow {

    0%,
    100% {
        filter: drop-shadow(0 0 6px rgba(124, 58, 237, 0.4));
    }

    50% {
        filter: drop-shadow(0 0 14px rgba(124, 58, 237, 0.7));
    }
}

.brand-logo {
    animation: brandGlow 3s ease-in-out infinite;
}

/* ---- Canvas grid subtle pan animation ---- */
@keyframes gridShift {
    from {
        background-position: 0 0, 0 0, 0 0, 0 0;
    }

    to {
        background-position: 0 0, 0 0, 40px 40px, 40px 40px;
    }
}

/* ---- Loading spinner ---- */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-strong);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* ---- Shake on error ---- */
@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-6px);
    }

    40% {
        transform: translateX(6px);
    }

    60% {
        transform: translateX(-4px);
    }

    80% {
        transform: translateX(4px);
    }
}

.shake {
    animation: shake 0.4s ease;
}

/* ---- Connection hover glow ---- */
.connection-path {
    transition: stroke 0.2s, stroke-width 0.2s, filter 0.2s;
}

/* ---- Node hover lift ---- */
.node-group {
    transition: filter 0.2s;
}

/* ---- Smooth zoom ---- */
.mind-map-svg {
    transition: none;
    /* zoom is handled via viewBox, no CSS transition needed */
}

/* ---- Tooltip ---- */
@keyframes tooltipIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[title]:hover::after {
    animation: tooltipIn 0.15s ease;
}

/* ---- Export loading overlay ---- */
.export-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 600;
    animation: fadeIn 0.2s ease;
}

.export-overlay p {
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
}