:root {
    --primary: #ff6600;
    --accent: #006bff;
    --bg: #f5f7fb;
    --border: #d0d7e2;
    --danger: #c53030;
    --info: #2b6cb0;
    --text: #1a202c;
    --radius-card: 18px;
}

* { box-sizing: border-box; }

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

.login-body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    background-color: var(--bg);
}

.login-wrapper {
    width: 100%;
    max-width: 420px;
    padding: 16px;
    margin-top: 72px;
}

.login-card {
    background-color: #ffffff;
    border-radius: var(--radius-card);
    padding: 28px 26px 24px;
    box-shadow: 0 14px 40px rgba(15, 23, 42, 0.16);
}

.login-logo {
    text-align: center;
    margin-bottom: 34px;
}

.login-logo img {
    max-height: 90px;
}

.form-group {
    margin-bottom: 18px;
}

label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 6px;
}

input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 0.95rem;
}

.btn-primary {
    width: 100%;
    padding: 11px 18px;
    border-radius: 999px;
    border: none;
    background-color: var(--accent);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    margin-top: 10px;
}

/* Botones reutilizables (resultados / acciones) */
.btn {
    border-radius: 999px;
    padding: 10px 16px;
    font-weight: 600;
    font-size: 0.92rem;
    line-height: 1;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-inline {
    width: auto;
    margin-top: 0;
}

.btn-secondary {
    background: #ffffff;
    color: var(--accent);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: #f8fbff;
}

.btn-primary:hover {
    opacity: 0.96;
}

.result-main {
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    background-color: var(--bg);
    padding: 32px 16px;
}

.result-box {
    background-color: #ffffff;
    border-radius: var(--radius-card);
    padding: 24px 20px;
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.15);
    width: 100%;
    max-width: 1024px;
}

.result-header {
    display: grid;
    grid-template-columns: 90px 1fr 90px;
    align-items: center;
    gap: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.result-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.result-logo {
    height: 60px;
    width: auto;
}

.result-heading {
    flex: 1;
    text-align: center;
}

.result-title {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
}

.result-meta {
    margin-top: 6px;
    font-size: 0.88rem;
    color: #475569;
    display: grid;
    gap: 4px;
}

.result-spacer {
    width: 90px;
    height: 1px;
}

.table-wrapper {
    overflow-x: auto;
    margin-top: 12px;
}

.result-totals {
    margin-top: 14px;
    border-top: 1px solid var(--border);
    padding-top: 12px;
    display: grid;
    gap: 10px;
}

.result-total-general {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    font-weight: 700;
}

.result-total-letters {
    font-size: 0.9rem;
    color: #1f2937;
}

.result-total-letters .label {
    font-weight: 600;
}

.pdf-actions {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.pdf-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 2px 0;
}

.pdf-link:hover {
    text-decoration: underline;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table thead {
    background-color: #f0f4ff;
}

.data-table th,
.data-table td {
    padding: 8px 10px;
    border: 1px solid var(--border);
    text-align: left;
}

.data-table th { font-weight: 600; }

.data-table td.money {
    text-align: right;
    white-space: nowrap;
}

.data-table td.money-text {
    font-style: italic;
}

.alert {
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 16px;
}

.alert-error {
    background-color: #fff5f5;
    border: 1px solid #feb2b2;
    color: var(--danger);
}

.alert-info {
    background-color: #ebf8ff;
    border: 1px solid #90cdf4;
    color: var(--info);
}

.pdf-form { margin-top: 16px; }

.back-link {
    margin-top: 12px;
    font-size: 0.9rem;
}

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

.back-link a:hover {
    text-decoration: underline;
}