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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

.wrap {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 15px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(26,115,232,0.3);
}
header h1 { font-size: 1.8rem; }
header p { opacity: 0.9; margin-top: 5px; }

.header-cliente {
    background: linear-gradient(135deg, #2e7d32, #1b5e20);
}

.card {
    background: #fff;
    border-radius: 14px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.card h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #1a73e8;
}

.alert {
    background: #e8f5e9;
    border-left: 4px solid #4caf50;
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 20px;
}
.alert-pending {
    border-left-color: #ff9800;
    background: #fff8e1;
}
.alert-pending h2 { color: #e65100; }

/* FORMULARIOS */
.form-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: flex-end;
}
.form-row input, .form-row select {
    flex: 1;
    min-width: 150px;
    padding: 12px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 0.95rem;
    transition: border 0.3s;
}
.form-row input:focus, .form-row select:focus {
    border-color: #1a73e8;
    outline: none;
}

.form-col { display: flex; flex-direction: column; gap: 14px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 5px; font-size: 0.9rem; }
.form-group input, .form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 0.95rem;
}
.form-group small { color: #888; font-size: 0.8rem; }

/* BOTONES */
.btn {
    padding: 12px 22px;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.btn-primary { background: #1a73e8; color: #fff; }
.btn-green { background: #4caf50; color: #fff; padding: 8px 14px; font-size: 0.85rem; }
.btn-red { background: #e53935; color: #fff; padding: 8px 14px; font-size: 0.85rem; }
.btn-full { width: 100%; }

/* TABLA */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 10px; text-align: left; border-bottom: 1px solid #eee; }
th { background: #f5f5f5; font-size: 0.85rem; text-transform: uppercase; color: #666; }
.debe { color: #e53935; font-weight: 700; }
.pagado { color: #4caf50; font-weight: 700; }
.link-cliente { color: #1a73e8; text-decoration: none; font-weight: 600; }

/* BALANCE CLIENTE */
.balance-card {
    text-align: center;
    padding: 30px;
    border-radius: 16px;
    margin-bottom: 20px;
    color: #fff;
}
.tiene-deuda { background: linear-gradient(135deg, #e53935, #b71c1c); }
.sin-deuda { background: linear-gradient(135deg, #4caf50, #2e7d32); }
.balance-label { display: block; font-size: 1rem; opacity: 0.9; }
.balance-monto { display: block; font-size: 2.5rem; font-weight: 800; margin: 8px 0; }
.balance-card small { opacity: 0.8; }

/* TIMELINE / HISTORIAL */
.timeline { display: flex; flex-direction: column; gap: 10px; }
.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr auto auto;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: #fafafa;
    border-radius: 10px;
    border-left: 4px solid #ccc;
}
.timeline-item.fiao { border-left-color: #e53935; }
.timeline-item.pago, .timeline-item.abono { border-left-color: #4caf50; }
.tl-fecha { font-size: 0.8rem; color: #888; }
.tl-tipo { font-weight: 700; font-size: 0.85rem; }
.tl-desc { font-size: 0.8rem; color: #666; display: block; }
.tl-monto { font-weight: 700; font-size: 1rem; }
.tl-monto.rojo { color: #e53935; }
.tl-monto.verde { color: #4caf50; }
.tl-estado { font-size: 0.7rem; padding: 3px 8px; border-radius: 20px; font-weight: 600; }
.estado-pendiente { background: #fff3e0; color: #e65100; }
.estado-verificado { background: #e8f5e9; color: #2e7d32; }
.estado-rechazado { background: #ffebee; color: #c62828; }

/* PAGOS PENDIENTES */
.pago-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    flex-wrap: wrap;
    gap: 10px;
}
.btns-verificar { display: flex; gap: 6px; }

.empty { color: #999; text-align: center; padding: 20px; }

footer { text-align: center; padding: 20px; color: #aaa; font-size: 0.8rem; }

/* RESPONSIVE */
@media (max-width: 600px) {
    .form-row { flex-direction: column; }
    .timeline-item { grid-template-columns: 1fr; gap: 4px; }
    .balance-monto { font-size: 2rem; }
    header h1 { font-size: 1.4rem; }
}