/* ============================================================
   CAASA Pagos en Línea — Diseño UI/UX
   Paleta: Guinda Morena #6B0F1A, Negro #1A1A1A, Blanco, Oro #C9A84C
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --guinda:      #6B0F1A;
    --guinda-dark: #4A0A12;
    --guinda-light:#8B1A28;
    --negro:       #1A1A1A;
    --gris:        #F5F5F5;
    --gris-medio:  #E0E0E0;
    --texto:       #2C2C2C;
    --oro:         #C9A84C;
    --azul-pago:   #1A56DB;
    --verde:       #15803D;
    --rojo:        #DC2626;
    --blanco:      #FFFFFF;
    --sombra:      0 4px 24px rgba(0,0,0,0.10);
    --radio:       12px;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--gris);
    color: var(--texto);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ---- HEADER ---- */
.header {
    background: linear-gradient(135deg, var(--guinda-dark) 0%, var(--guinda) 100%);
    padding: 0;
    box-shadow: 0 2px 12px rgba(0,0,0,0.25);
}
.header-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-icon {
    font-size: 2rem;
    background: rgba(255,255,255,0.15);
    border-radius: 10px;
    width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
}
.logo-title {
    display: block;
    color: var(--blanco);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 1px;
}
.logo-sub {
    display: block;
    color: rgba(255,255,255,0.75);
    font-size: 0.72rem;
    letter-spacing: 0.3px;
}
.header-badge {
    background: var(--oro);
    color: var(--negro);
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* ---- MAIN ---- */
.main-content {
    flex: 1;
    padding: 40px 16px;
}

/* ---- CARD CENTRADA ---- */
.card-center {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}
.card {
    background: var(--blanco);
    border-radius: var(--radio);
    box-shadow: var(--sombra);
    padding: 40px 36px;
    width: 100%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.card-wide { max-width: 640px; }

.card-icon {
    font-size: 3rem;
    text-align: center;
}
.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--guinda);
    text-align: center;
}
.card-desc {
    font-size: 0.95rem;
    color: #555;
    text-align: center;
    line-height: 1.5;
}
.card-desc-small {
    font-size: 0.82rem;
    color: #777;
    text-align: center;
}

/* ---- FORMULARIO ---- */
.form { display: flex; flex-direction: column; gap: 16px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--negro);
}
.input {
    border: 2px solid var(--gris-medio);
    border-radius: 8px;
    padding: 12px 14px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color .2s;
    outline: none;
}
.input:focus { border-color: var(--guinda); }
.input-upper { text-transform: uppercase; letter-spacing: 2px; }
.input-hint {
    font-size: 0.75rem;
    color: #888;
}

/* ---- BOTONES ---- */
.btn {
    display: flex; align-items: center; justify-content: center;
    gap: 8px;
    padding: 14px 20px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border: none;
    transition: all .2s;
    text-decoration: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--guinda) 0%, var(--guinda-light) 100%);
    color: var(--blanco);
}
.btn-primary:hover { background: var(--guinda-dark); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-pagar {
    background: linear-gradient(135deg, #15803D 0%, #16A34A 100%);
    color: var(--blanco);
    font-size: 1.1rem;
    padding: 16px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-weight: 700;
    transition: all .2s;
    width: 100%;
}
.btn-pagar:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-pagar:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.btn-secondary {
    background: var(--gris);
    color: var(--guinda);
    border: 2px solid var(--guinda);
    font-size: 0.9rem;
}
.btn-secondary:hover { background: var(--guinda); color: var(--blanco); }

/* ---- ALERTS ---- */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}
.alert-error  { background: #FEF2F2; color: var(--rojo); border-left: 4px solid var(--rojo); }
.alert-success{ background: #F0FDF4; color: var(--verde); border-left: 4px solid var(--verde); }

/* ---- CUENTA HEADER ---- */
.cuenta-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: linear-gradient(135deg, var(--guinda-dark), var(--guinda));
    color: var(--blanco);
    border-radius: 10px;
    padding: 20px;
}
.cuenta-icon { font-size: 2.5rem; }
.cuenta-nombre {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}
.cuenta-detalle {
    font-size: 0.82rem;
    opacity: 0.85;
    margin-bottom: 2px;
}
.badge-tarifa {
    display: inline-block;
    background: var(--oro);
    color: var(--negro);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 12px;
    margin-top: 6px;
    letter-spacing: 0.3px;
}

/* ---- CONCEPTOS ---- */
.section-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 4px;
}
.conceptos-tabla {
    border: 1px solid var(--gris-medio);
    border-radius: 8px;
    overflow: hidden;
}
.concepto-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--gris-medio);
}
.concepto-row:last-child { border-bottom: none; }
.concepto-row:nth-child(odd) { background: #FAFAFA; }
.concepto-iva .concepto-nombre { color: #888; font-size: 0.85rem; }
.concepto-nombre { font-size: 0.9rem; }
.concepto-monto {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--guinda);
    white-space: nowrap;
}
.total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--guinda);
    border-radius: 8px;
    margin-top: 4px;
}
.total-label {
    color: var(--blanco);
    font-weight: 600;
    font-size: 1rem;
}
.total-monto {
    color: var(--blanco);
    font-size: 1.5rem;
    font-weight: 800;
}

/* ---- RESULTADO PAGO ---- */
.resultado-icon {
    font-size: 4rem;
    text-align: center;
}
.detalle-pago {
    background: var(--gris);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.detalle-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

/* ---- SECURE BADGE ---- */
.secure-badge {
    font-size: 0.75rem;
    color: #888;
    text-align: center;
}

/* ---- FOOTER ---- */
.footer {
    background: var(--negro);
    padding: 20px;
    text-align: center;
}
.footer-inner p {
    color: rgba(255,255,255,0.6);
    font-size: 0.78rem;
    margin-bottom: 2px;
}
.footer-small { opacity: 0.5 !important; }

/* ---- RESPONSIVE ---- */
@media (max-width: 520px) {
    .card { padding: 28px 20px; }
    .header-inner { padding: 12px 16px; }
    .logo-sub { display: none; }
    .total-monto { font-size: 1.2rem; }
}