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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    color: #fff;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card h1 {
    text-align: center;
    margin-bottom: 8px;
    font-size: 24px;
    color: #e94560;
}

.card .subtitle {
    text-align: center;
    color: #8892b0;
    margin-bottom: 30px;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: #8892b0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    color: #fff;
    font-size: 15px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #e94560;
}

.btn {
    width: 100%;
    padding: 14px;
    background: #e94560;
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.1s;
    margin-top: 10px;
}

.btn:hover {
    background: #c73652;
}

.btn:active {
    transform: scale(0.98);
}

.btn:disabled {
    background: #555;
    cursor: not-allowed;
}

.link-registrar {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
    color: #8892b0;
}

.link-registrar a {
    color: #e94560;
    text-decoration: none;
    font-weight: 600;
}

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

#modalRegistro {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    overflow-y: auto;
    padding: 20px;
}

#modalRegistro.show {
    opacity: 1;
    pointer-events: all;
}

.error-msg {
    background: rgba(233, 69, 96, 0.15);
    border: 1px solid rgba(233, 69, 96, 0.3);
    color: #e94560;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
    display: none;
}

.error-msg.show {
    display: block;
}

/* Dashboard */
.dashboard {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.header h1 {
    font-size: 22px;
    color: #e94560;
}

.header .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #8892b0;
    font-size: 14px;
}

.user-clickable {
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 6px;
    transition: background 0.3s, color 0.3s;
    font-weight: 600;
    color: #e94560;
}

.user-clickable:hover {
    background: rgba(233, 69, 96, 0.15);
}

.header .btn-logout {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.3s;
}

.header .btn-logout:hover {
    background: rgba(233, 69, 96, 0.2);
    border-color: #e94560;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: #e94560;
}

.stat-card .stat-label {
    font-size: 12px;
    color: #8892b0;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

.search-box {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-box input {
    flex: 1;
    max-width: 400px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
}

.search-box input:focus {
    outline: none;
    border-color: #e94560;
}

.btn-toggle-inactivos {
    padding: 10px 18px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #8892b0;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: background 0.3s, color 0.3s, border-color 0.3s;
}

.btn-toggle-inactivos:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-toggle-inactivos.active {
    color: #e94560;
    border-color: #e94560;
    background: rgba(233, 69, 96, 0.1);
}

.row-inactivo td {
    color: #555;
}

.col-usuario {
    min-width: 180px;
}

.select-usuario {
    width: 100%;
    padding: 6px 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    color: #fff;
    font-size: 12px;
    cursor: pointer;
}

.select-usuario:focus {
    outline: none;
    border-color: #e94560;
}

.select-usuario option {
    background: #1a1a2e;
    color: #fff;
}

.table-container {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    background: rgba(233, 69, 96, 0.2);
    padding: 14px 16px;
    text-align: left;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #e94560;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 14px;
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

tbody tr:last-child td {
    border-bottom: none;
}

.saldo {
    font-weight: 600;
}

.saldo.positivo {
    color: #e94560;
}

.saldo.cero {
    color: #4caf50;
}

.saldo.cargando {
    text-align: center;
}

.spinner-saldo {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(233, 69, 96, 0.2);
    border-top-color: #e94560;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    vertical-align: middle;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #8892b0;
}

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(233, 69, 96, 0.2);
    border-top-color: #e94560;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-pagar {
    padding: 6px 14px;
    background: #4caf50;
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-pagar:hover {
    background: #388e3c;
}

.pagado {
    color: #4caf50;
    font-size: 12px;
    font-weight: 600;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.modal-overlay.show {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: #1a1a2e;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    width: 90%;
    max-width: 420px;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.modal-overlay.show .modal {
    transform: scale(1);
}

.modal-header {
    padding: 20px 24px 0;
}

.modal-header h3 {
    margin: 0;
    font-size: 18px;
    color: #e94560;
}

.modal-body {
    padding: 16px 24px;
    font-size: 14px;
    color: #ccd6f6;
    line-height: 1.6;
}

.modal-footer {
    padding: 0 24px 20px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.modal-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.modal-btn-ok {
    background: #4caf50;
    color: #fff;
}

.modal-btn-ok:hover {
    background: #388e3c;
}

.modal-btn-cancel {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.modal-btn-cancel:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-cargando {
    text-align: center;
    padding: 40px;
    color: #8892b0;
}

.spinner-modal {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid rgba(233, 69, 96, 0.2);
    border-top-color: #e94560;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 12px;
}

.header .btn-tarjetas {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #4caf50;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: background 0.3s;
}

.header .btn-tarjetas:hover {
    background: rgba(76, 175, 80, 0.2);
    border-color: #4caf50;
}

.modal-agregar {
    max-width: 480px;
}

.modal-agregar textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    font-family: 'Courier New', monospace;
    resize: vertical;
    line-height: 1.5;
}

.modal-agregar textarea:focus {
    outline: none;
    border-color: #e94560;
}

.modal-tarjetas {
    max-width: 480px;
}

.tarjetas-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tarjeta-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.tarjeta-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.tarjeta-item.selected {
    border-color: #4caf50;
    background: rgba(76, 175, 80, 0.1);
}

.tarjeta-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tarjeta-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-eliminar-tarjeta {
    padding: 4px 10px;
    background: rgba(233, 69, 96, 0.2);
    border: 1px solid rgba(233, 69, 96, 0.4);
    border-radius: 4px;
    color: #e94560;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-eliminar-tarjeta:hover {
    background: rgba(233, 69, 96, 0.4);
}

.modal .form-group {
    margin-bottom: 14px;
}

.modal .form-group label {
    display: block;
    margin-bottom: 4px;
    font-size: 12px;
    color: #8892b0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.modal .form-group input,
.modal .form-group select {
    width: 100%;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    color: #fff;
    font-size: 14px;
}

.modal .form-group input:focus,
.modal .form-group select:focus {
    outline: none;
    border-color: #e94560;
}

.modal .form-group select {
    appearance: auto;
    color: #fff;
    background-color: rgba(255, 255, 255, 0.08);
}

.modal .form-group select option {
    background: #1a1a2e;
    color: #fff;
}

.tarjeta-info strong {
    color: #ccd6f6;
    font-size: 14px;
}

.tarjeta-info span {
    color: #8892b0;
    font-size: 13px;
}

.tarjeta-check {
    color: #4caf50;
    font-size: 18px;
    font-weight: 700;
}

.table-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.table-actions-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.select-all-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #8892b0;
    cursor: pointer;
}

.select-all-label input,
.col-check input {
    accent-color: #e94560;
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.col-check {
    width: 40px;
    text-align: center;
}

.btn-pagar-masivo {
    padding: 8px 18px;
    background: #e94560;
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-pagar-masivo:hover:not(:disabled) {
    background: #c73652;
}

.btn-pagar-masivo:disabled {
    background: #555;
    cursor: not-allowed;
}

.btn-agregar {
    padding: 10px 18px;
    background: #4caf50;
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-agregar:hover {
    background: #388e3c;
}

.col-acciones {
    width: 80px;
    text-align: center;
    white-space: nowrap;
}

.btn-editar-cliente, .btn-eliminar-cliente {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.3s;
    border: none;
    margin: 0 2px;
}

.btn-editar-cliente {
    background: rgba(76, 175, 80, 0.2);
    border: 1px solid rgba(76, 175, 80, 0.4);
    color: #4caf50;
}

.btn-editar-cliente:hover {
    background: rgba(76, 175, 80, 0.5);
}

.btn-eliminar-cliente {
    background: rgba(233, 69, 96, 0.2);
    border: 1px solid rgba(233, 69, 96, 0.4);
    color: #e94560;
}

.btn-eliminar-cliente:hover {
    background: rgba(233, 69, 96, 0.5);
}