/* URL Shortener — learn-mode visualization styles */

/* ── Pipeline flow diagram ─────────────────────────────────────────────── */
.us-flow {
    display: flex;
    align-items: stretch;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}

.us-flow-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-width: 78px;
    padding: 10px 8px;
    border-radius: 10px;
    border: 1px solid rgba(var(--v-theme-on-surface), 0.12);
    background: rgba(var(--v-theme-on-surface), 0.03);
    color: rgba(var(--v-theme-on-surface), 0.4);
    transition: all 0.4s ease;
    text-align: center;
}

.us-flow-node .v-icon {
    opacity: 0.5;
    transition: all 0.4s ease;
}

.us-flow-label {
    font-size: 0.68rem;
    line-height: 1.1;
    font-weight: 500;
}

.us-flow-node-active {
    border-color: rgb(var(--v-theme-primary));
    background: rgba(var(--v-theme-primary), 0.1);
    color: rgb(var(--v-theme-primary));
}

.us-flow-node-active .v-icon {
    opacity: 1;
    color: rgb(var(--v-theme-primary));
}

.us-flow-node-current {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 6px 18px rgba(var(--v-theme-primary), 0.3);
    animation: usPulse 1s ease infinite;
}

@keyframes usPulse {
    0%, 100% { box-shadow: 0 6px 18px rgba(var(--v-theme-primary), 0.25); }
    50%      { box-shadow: 0 6px 26px rgba(var(--v-theme-primary), 0.5); }
}

.us-flow-arrow {
    display: flex;
    align-items: center;
    font-size: 1.1rem;
    color: rgba(var(--v-theme-on-surface), 0.25);
    transition: color 0.4s ease;
}

.us-flow-arrow-active {
    color: rgb(var(--v-theme-primary));
}

/* ── Step cards ────────────────────────────────────────────────────────── */
.us-step-card {
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.us-step-card-current {
    border-color: rgb(var(--v-theme-primary)) !important;
    box-shadow: 0 4px 20px rgba(var(--v-theme-primary), 0.18);
}

/* ── Key / value tables (reused idea from the QR learn tables) ─────────── */
.us-table {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.us-row {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.us-label {
    font-size: 0.875rem;
    color: rgba(var(--v-theme-on-surface), 0.7);
    min-width: 150px;
    flex-shrink: 0;
}

.us-value {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.85rem;
    background: rgba(var(--v-theme-primary), 0.1);
    padding: 4px 8px;
    border-radius: 4px;
}

.us-value.us-break {
    word-break: break-all;
}

.us-value.us-code {
    font-weight: 700;
    letter-spacing: 2px;
    color: rgb(var(--v-theme-primary));
}

.us-value.us-ok {
    background: rgba(var(--v-theme-success), 0.14);
    color: rgb(var(--v-theme-success));
}

/* ── Schema table ──────────────────────────────────────────────────────── */
.us-schema-wrap {
    overflow-x: auto;
}

.us-schema-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.us-schema-table th,
.us-schema-table td {
    text-align: start;
    padding: 8px 10px;
    border-bottom: 1px solid rgba(var(--v-theme-on-surface), 0.08);
    vertical-align: top;
}

.us-schema-table th {
    font-weight: 600;
    color: rgba(var(--v-theme-on-surface), 0.6);
}

.us-schema-col {
    color: rgb(var(--v-theme-primary));
    font-weight: 600;
}

.us-schema-type {
    color: rgba(var(--v-theme-on-surface), 0.65);
    font-size: 0.8rem;
}

/* ── Protection layers ─────────────────────────────────────────────────── */
.us-layers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

.us-layer {
    display: flex;
    align-items: flex-start;
    padding: 12px;
    border-radius: 10px;
    background: rgba(var(--v-theme-on-surface), 0.03);
    border: 1px solid rgba(var(--v-theme-on-surface), 0.08);
}

@media (max-width: 600px) {
    .us-label { min-width: 110px; }
    .us-flow-node { min-width: 64px; }
}