:root {
    --bg: #0f1419;
    --bg-outer: #1a202c;
    --bg-card: #2d3748;
    --bg-input: #1e2530;
    --border: #4a5568;
    --border-strong: #718096;
    --text: #f7fafc;
    --text-dim: #a0aec0;
    --accent: #1f78b4;
    --accent-2: #33a02c;
    --danger: #e53e3e;
    --success: #38a169;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

header {
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

header h1 {
    margin: 0 0 8px;
    font-size: 24px;
    font-weight: 700;
}

.subtitle {
    margin: 0;
    font-size: 14px;
    color: var(--text-dim);
}

.subtitle a {
    color: var(--accent);
    text-decoration: none;
}

.alert {
    padding: 12px 16px;
    margin-bottom: 24px;
    border-radius: 6px;
    font-size: 14px;
}

.alert.error {
    background: #5b1d20;
    border: 1px solid var(--danger);
    color: #fed7d7;
}

/* ============================================================
   OUTER BOX (around everything: header + 4 ES blocks)
   ============================================================ */
.form-outer {
    border: 2px solid var(--border-strong);
    border-radius: 12px;
    padding: 24px;
    background: var(--bg-outer);
}

/* ============================================================
   HEADER CARD
   ============================================================ */
.card {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 16px;
}

.card-header {
    border-left: 4px solid var(--accent);
}

.carga-summary {
    float: right;
    font-size: 13px;
    font-weight: 600;
    text-transform: none;
    letter-spacing: normal;
    color: var(--text-dim);
}

#carga-counter {
    color: var(--success);
    font-weight: 700;
    font-size: 16px;
    margin: 0 4px;
}

#carga-counter.out-of-range {
    color: var(--danger);
}

.carga-hint {
    color: var(--text-dim);
    font-weight: 400;
    font-size: 12px;
}

.card h2 {
    margin: 0 0 16px;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.card h3 {
    margin: 0 0 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================================
   ES OUTER BOX (around each ES + its 4 WDXs)
   ============================================================ */
.es-outer {
    border: 2px solid var(--accent);
    border-radius: 10px;
    padding: 20px;
    margin-top: 24px;
    background: rgba(31, 120, 180, 0.04);
}

.es-title {
    margin: 0 0 16px;
    font-size: 20px;
    font-weight: 800;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 8px;
}

.card-es {
    border-left: 4px solid var(--accent);
    background: var(--bg-card);
}

.card-es h3 {
    color: var(--accent);
    font-size: 13px;
}

.card-wd {
    border-left: 4px solid var(--accent-2);
    background: rgba(45, 55, 72, 0.7);
    margin-left: 16px;
    margin-bottom: 12px;
    padding: 16px;
}

.card-wd h3 {
    color: var(--accent-2);
    font-size: 12px;
}

/* ============================================================
   FIELDS
   ============================================================ */
.fields {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

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

.field.type-textarea {
    grid-column: 1 / -1;
}

.field label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}

.field .req {
    color: var(--danger);
    font-weight: 700;
}

.field input,
.field textarea,
.field select {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 8px 12px;
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.15s;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
    outline: none;
    border-color: var(--accent);
}

.field textarea {
    resize: vertical;
    min-height: 60px;
}

/* ============================================================
   ACTIONS + FOOTER
   ============================================================ */
.actions {
    display: flex;
    gap: 12px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.primary, .secondary {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.15s;
    font-family: inherit;
}

.primary {
    background: var(--accent);
    color: white;
}

.primary:hover {
    background: #2b8fc7;
}

.secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
}

.secondary:hover {
    background: var(--bg-input);
}

footer {
    margin-top: 48px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 12px;
    text-align: center;
}

footer code {
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 11px;
}

/* ============================================================
   THANKS PAGE
   ============================================================ */
.thanks {
    text-align: center;
    padding-top: 80px;
}

.thanks h1 {
    color: var(--success);
    font-size: 32px;
    margin: 0 0 16px;
}

.thanks p {
    color: var(--text-dim);
    margin: 8px 0;
}

.thanks .actions {
    justify-content: center;
    border: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 720px) {
    .container { padding: 16px 12px 60px; }
    .form-outer { padding: 16px; }
    .es-outer { padding: 14px; }
    .card-wd { margin-left: 8px; }
    .fields { grid-template-columns: 1fr; }
}