/* ============ CONVERSOR DE UNIDADES ============ */

.page-head {
    padding-top: clamp(1.1rem, 3.5vw, 2.2rem);
    text-align: center;
}

.conv-wrap {
    width: 100%;
    min-width: 0;
    max-width: 1160px;
    margin: 0 auto clamp(3rem, 8vw, 5rem);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ---------- categorias (grid 5x2) ---------- */
.conv-cat-bar {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    padding: 12px;
    background: var(--glass-bg);
    backdrop-filter: blur(14px) saturate(1.3);
    -webkit-backdrop-filter: blur(14px) saturate(1.3);
    border: 1px solid var(--border);
    border-radius: 26px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition);
}
.conv-cat-bar:hover { border-color: var(--accent-soft); }

.conv-cat-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .2px;
    padding: 9px 6px;
    border-radius: 999px;
    cursor: pointer;
    white-space: nowrap;
    font-family: inherit;
    transition: all var(--transition);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
}
.conv-cat-pill i { font-size: 15px; flex-shrink: 0; }
.conv-cat-pill:hover { color: var(--text); }
.conv-cat-pill.active {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent);
}

@media (max-width: 600px) {
    .conv-cat-bar { grid-template-columns: repeat(5, 1fr); gap: 5px; padding: 8px; }
    .conv-cat-pill { padding: 7px 4px; font-size: .62rem; gap: 3px; }
    .conv-cat-pill i { font-size: 12px; }
}

/* ---------- contenedor interno ---------- */
.conv-box {
    width: 100%;
    min-width: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(14px) saturate(1.3);
    -webkit-backdrop-filter: blur(14px) saturate(1.3);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: clamp(18px, 3vw, 28px);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.conv-box:hover { border-color: var(--accent-soft); }

/* ---------- conversor card ---------- */
.conv-input-row {
    display: grid;
    grid-template-columns: 1fr 44px 1fr;
    gap: 12px;
    align-items: end;
}

.conv-field-group {
    display: flex;
    flex-direction: column;
}

.conv-field-label {
    font-size: .72rem;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .07em;
    margin-bottom: 6px;
}

.conv-mt { margin-top: 12px; }

.conv-field-input {
    width: 100%;
    padding: 12px 14px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 14px;
    color: var(--text);
    font-size: 1.3rem;
    font-weight: 700;
    outline: none;
    font-family: inherit;
    box-sizing: border-box;
    transition: border-color .2s;
}
.conv-field-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

.conv-output {
    background: var(--surface) !important;
    border: 1px solid var(--border) !important;
    color: var(--accent) !important;
    cursor: default;
}

/* ---------- select ---------- */
.conv-select-wrap {
    position: relative;
}
.conv-select-chevron {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--muted);
    font-size: 16px;
    line-height: 1;
}

.conv-field-select {
    width: 100%;
    padding: 10px 36px 10px 14px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: .88rem;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    appearance: none;
    font-family: inherit;
    text-align: center;
    text-align-last: center;
    transition: border-color .2s;
}
.conv-field-select:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

/* ---------- swap button ---------- */
.conv-swap-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--surface-2);
    color: var(--muted);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all .25s ease;
    align-self: flex-end;
    flex-shrink: 0;
    font-size: 18px;
}
.conv-swap-btn:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); transform: rotate(180deg); }

/* ---------- result band ---------- */
.conv-result-band {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 16px;
    margin-top: 12px;
}

.conv-result-from { font-weight: 600; color: var(--muted); font-size: .95rem; }
.conv-result-arrow { color: var(--text-light); font-size: 1rem; }
.conv-result-to { font-size: 1.3rem; font-weight: 800; color: var(--accent); }

/* ---------- pasos (estilo conicas) ---------- */
.conv-proc-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--muted);
    margin-bottom: 10px;
}
.conv-proc-head i { color: inherit; font-size: 18px; }

.conv-empty-hint {
    font-size: .88rem;
    color: var(--muted);
    text-align: center;
    padding: 2rem 0;
}

.conv-step-row {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 13px 0;
    border-bottom: 1px solid var(--border);
    animation: convStepIn .45s ease forwards;
    opacity: 0;
}
.conv-step-row:last-child { border-bottom: none; }

@keyframes convStepIn {
    from { opacity: 0; transform: translateX(-10px); }
    to   { opacity: 1; transform: translateX(0); }
}

.conv-step-badge {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    margin-top: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 22%;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: .72rem;
    font-weight: 700;
}

.conv-step-desc {
    width: 100%;
    min-width: 0;
    overflow-x: auto;
    font-size: .93rem;
    line-height: 1.55;
    color: var(--text);
    opacity: .92;
    text-align: center;
    font-weight: 800;
    margin-bottom: 6px;
}

.conv-step-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    min-width: 0;
    text-align: center;
}

.conv-step-row.final {
    border-bottom: none;
}
.conv-step-row.final .conv-step-badge {
    background: var(--accent-soft);
}

.conv-katex-wrap {
    width: 100%;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 2px 0;
}
.conv-katex-wrap .katex-display {
    margin: .4em 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 2px 0;
}

/* ---------- responsive ---------- */
@media (max-width: 580px) {
    .conv-input-row {
        grid-template-columns: 1fr 36px 1fr;
        gap: 8px;
    }
    .conv-swap-btn { width: 36px; height: 36px; font-size: 14px; }
    .conv-field-input { font-size: 1rem; padding: 9px 10px; }
    .conv-field-select { font-size: .78rem; padding: 7px 26px 7px 10px; }
    .conv-field-label { font-size: .7rem; }
    .conv-result-band { padding: 10px 12px; }
    .conv-result-to { font-size: 1.1rem; }
    .conv-step-row { gap: 10px; padding: 10px 0; }
    .conv-step-badge { width: 22px; height: 22px; font-size: .65rem; }
    .conv-step-desc { font-size: .85rem; }
    .conv-box { padding: 14px; }
    .conv-proc-head { font-size: .65rem; }
}

@media (max-width: 900px) {
    .content { padding-left: 12px; padding-right: 12px; }
}