/* Hydrology-themed loading spinner */

.hydro-loading-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    gap: 14px;
}

.hydro-wave-container {
    display: flex;
    align-items: flex-end;
    gap: 5px;
    height: 40px;
}

.hydro-wave-bar {
    width: 7px;
    border-radius: 4px 4px 0 0;
    background: linear-gradient(180deg, #1a7fc1 0%, #5ab4d6 60%, #a8d8ea 100%);
    animation: hydro-wave 1.1s ease-in-out infinite;
}

.hydro-wave-bar:nth-child(1) { animation-delay: 0.0s; }
.hydro-wave-bar:nth-child(2) { animation-delay: 0.1s; }
.hydro-wave-bar:nth-child(3) { animation-delay: 0.2s; }
.hydro-wave-bar:nth-child(4) { animation-delay: 0.3s; }
.hydro-wave-bar:nth-child(5) { animation-delay: 0.4s; }
.hydro-wave-bar:nth-child(6) { animation-delay: 0.3s; }
.hydro-wave-bar:nth-child(7) { animation-delay: 0.2s; }

@keyframes hydro-wave {
    0%, 100% { height: 8px;  opacity: 0.5; }
    50%       { height: 36px; opacity: 1.0; }
}

.hydro-loading-label {
    font-size: 13px;
    color: #4a90b8;
    letter-spacing: 0.04em;
    font-family: sans-serif;
}