/* Spectrum Waterfall Mode Styles */

.wf-container {
    --wf-border: rgba(92, 153, 255, 0.24);
    --wf-surface: linear-gradient(180deg, rgba(12, 19, 31, 0.97) 0%, rgba(5, 9, 17, 0.98) 100%);
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    background: radial-gradient(circle at 14% -18%, rgba(36, 129, 255, 0.2) 0%, rgba(36, 129, 255, 0) 38%),
        radial-gradient(circle at 86% -26%, rgba(255, 161, 54, 0.2) 0%, rgba(255, 161, 54, 0) 36%),
        #03070f;
    border: 1px solid var(--wf-border);
    border-radius: 10px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03), 0 10px 34px rgba(2, 8, 22, 0.55);
    position: relative;
}

.wf-headline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: rgba(8, 14, 25, 0.86);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.wf-headline-left,
.wf-headline-right {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.wf-headline-tag {
    border-radius: 999px;
    padding: 1px 8px;
    border: 1px solid rgba(74, 163, 255, 0.45);
    background: rgba(74, 163, 255, 0.13);
    color: #8ec5ff;
    font-size: 10px;
    font-family: var(--font-mono, monospace);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
}

.wf-headline-sub {
    font-size: 11px;
    color: var(--text-dim);
    font-family: var(--font-mono, monospace);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.wf-range-text,
.wf-tune-text {
    font-family: var(--font-mono, monospace);
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.wf-tune-text {
    color: #ffd782;
}

.wf-monitor-strip {
    display: grid;
    grid-template-columns: minmax(240px, 1.5fr) minmax(220px, 1fr) minmax(230px, 1.2fr) minmax(130px, 0.7fr) minmax(220px, 1fr);
    gap: 10px;
    align-items: stretch;
    padding: 8px 12px;
    background: var(--wf-surface);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    flex-shrink: 0;
}

.wf-rx-vfo {
    border: 1px solid rgba(102, 171, 255, 0.27);
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(8, 16, 31, 0.92) 0%, rgba(4, 9, 18, 0.95) 100%);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
    padding: 7px 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 72px;
}

.wf-rx-vfo-top,
.wf-rx-vfo-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.wf-rx-vfo-name {
    font-family: var(--font-mono, monospace);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.wf-rx-vfo-status {
    font-family: var(--font-mono, monospace);
    font-size: 10px;
    color: #a6cbff;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.wf-rx-vfo-readout {
    display: flex;
    align-items: baseline;
    gap: 7px;
    font-family: var(--font-mono, monospace);
    color: #7bc4ff;
    line-height: 1;
}

#wfRxFreqReadout {
    font-size: 32px;
    letter-spacing: 0.03em;
    font-variant-numeric: tabular-nums;
    text-shadow: 0 0 16px rgba(44, 153, 255, 0.28);
}

.wf-rx-vfo-unit {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.wf-rx-vfo-bottom {
    font-family: var(--font-mono, monospace);
    font-size: 10px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.wf-rx-modebank {
    border: 1px solid rgba(92, 153, 255, 0.24);
    border-radius: 8px;
    padding: 8px;
    background: rgba(4, 10, 20, 0.86);
    display: grid;
    grid-template-columns: repeat(5, minmax(42px, 1fr));
    gap: 6px;
    align-content: center;
}

.wf-mode-btn {
    border: 1px solid rgba(118, 176, 255, 0.26);
    border-radius: 6px;
    background: linear-gradient(180deg, rgba(20, 37, 66, 0.95) 0%, rgba(13, 26, 49, 0.95) 100%);
    color: #d1e5ff;
    font-family: var(--font-mono, monospace);
    font-size: 11px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: pointer;
    height: 32px;
    transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}

.wf-mode-btn:hover {
    transform: translateY(-1px);
    border-color: rgba(143, 196, 255, 0.52);
}

.wf-mode-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.wf-mode-btn.is-active,
.wf-mode-btn.active {
    border-color: rgba(97, 198, 255, 0.62);
    background: linear-gradient(180deg, rgba(23, 85, 146, 0.92) 0%, rgba(18, 57, 104, 0.95) 100%);
    color: #f3fbff;
    box-shadow: 0 0 14px rgba(53, 152, 255, 0.28);
}

.wf-monitor-select-hidden {
    display: none;
}

.wf-rx-levels {
    border: 1px solid rgba(92, 153, 255, 0.22);
    border-radius: 8px;
    background: rgba(4, 10, 20, 0.85);
    padding: 7px 10px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
}

.wf-monitor-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.wf-monitor-label {
    color: var(--text-muted);
    font-family: var(--font-mono, monospace);
    font-size: 9px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.wf-monitor-select {
    width: 100%;
    height: 30px;
    border-radius: 6px;
    border: 1px solid rgba(92, 153, 255, 0.28);
    background: rgba(4, 8, 16, 0.8);
    color: var(--text-primary);
    font-family: var(--font-mono, monospace);
    font-size: 12px;
    padding: 0 8px;
}

.wf-monitor-slider-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
}

.wf-monitor-slider-wrap input[type="range"] {
    flex: 1;
    accent-color: var(--accent-cyan);
}

.wf-monitor-value {
    min-width: 28px;
    text-align: right;
    color: var(--text-secondary);
    font-family: var(--font-mono, monospace);
    font-size: 11px;
}

.wf-rx-meter-wrap {
    border: 1px solid rgba(92, 153, 255, 0.22);
    border-radius: 8px;
    background: rgba(4, 10, 20, 0.85);
    padding: 7px 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
}

.wf-rx-smeter {
    position: relative;
    width: 100%;
    height: 12px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(18, 44, 22, 0.95) 0%, rgba(46, 67, 20, 0.95) 55%, rgba(78, 28, 24, 0.95) 100%);
    border: 1px solid rgba(255, 255, 255, 0.09);
    overflow: hidden;
}

.wf-rx-smeter-fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: 0%;
    background: linear-gradient(90deg, rgba(86, 243, 146, 0.75) 0%, rgba(255, 208, 94, 0.78) 64%, rgba(255, 118, 118, 0.82) 100%);
    box-shadow: 0 0 10px rgba(97, 229, 255, 0.35);
    transition: width 90ms linear;
}

.wf-rx-smeter-text {
    font-family: var(--font-mono, monospace);
    font-size: 11px;
    color: var(--text-secondary);
}

.wf-rx-actions {
    border: 1px solid rgba(92, 153, 255, 0.22);
    border-radius: 8px;
    background: rgba(4, 10, 20, 0.85);
    padding: 7px 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
}

.wf-rx-action-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.wf-monitor-btn {
    height: 32px;
    min-width: 90px;
    border-radius: 6px;
    border: 1px solid rgba(86, 195, 124, 0.5);
    background: linear-gradient(180deg, rgba(33, 125, 67, 0.95) 0%, rgba(21, 88, 47, 0.95) 100%);
    color: #d2ffe2;
    font-family: var(--font-mono, monospace);
    font-size: 11px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: pointer;
    transition: filter 140ms ease, transform 140ms ease;
}

.wf-monitor-btn:hover {
    filter: brightness(1.07);
    transform: translateY(-1px);
}

.wf-monitor-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    filter: saturate(0.6);
    transform: none;
}

.wf-monitor-btn-secondary {
    border-color: rgba(92, 153, 255, 0.5);
    background: linear-gradient(180deg, rgba(34, 66, 121, 0.95) 0%, rgba(19, 41, 84, 0.95) 100%);
    color: #d4e7ff;
}

.wf-monitor-btn-unlock {
    border-color: rgba(214, 168, 94, 0.55);
    background: linear-gradient(180deg, rgba(134, 93, 31, 0.95) 0%, rgba(98, 65, 19, 0.95) 100%);
    color: #ffe8bd;
}

.wf-monitor-btn.is-active {
    border-color: rgba(255, 129, 129, 0.55);
    background: linear-gradient(180deg, rgba(127, 36, 48, 0.95) 0%, rgba(84, 21, 31, 0.95) 100%);
    color: #ffd9de;
}

.wf-monitor-state {
    font-family: var(--font-mono, monospace);
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.35;
}

#wfAudioPlayer {
    display: none;
}

/* Frequency control bar */

.wf-freq-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    background: rgba(8, 13, 24, 0.78);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    flex-shrink: 0;
    min-height: 38px;
    user-select: none;
}

.wf-freq-bar-label {
    font-family: var(--font-mono, monospace);
    font-size: 9px;
    color: var(--text-muted, #555);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

.wf-step-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--accent-cyan, #4aa3ff);
    font-size: 14px;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
    flex-shrink: 0;
    transition: background 0.1s, border-color 0.1s;
}

.wf-step-btn:hover {
    background: rgba(74, 163, 255, 0.17);
    border-color: rgba(74, 163, 255, 0.45);
}

.wf-step-btn:active {
    background: rgba(74, 163, 255, 0.28);
}

.wf-freq-display-wrap {
    display: flex;
    align-items: center;
    gap: 5px;
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid rgba(74, 163, 255, 0.28);
    border-radius: 5px;
    padding: 3px 8px;
    flex-shrink: 0;
}

.wf-freq-center-input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--accent-cyan, #4aa3ff);
    font-family: var(--font-mono, monospace);
    font-size: 17px;
    font-weight: 700;
    width: 110px;
    text-align: right;
    padding: 0;
    cursor: text;
    letter-spacing: 0.02em;
}

.wf-freq-center-input:focus {
    color: #fff;
}

.wf-freq-bar-unit {
    font-family: var(--font-mono, monospace);
    font-size: 11px;
    color: var(--text-dim, #555);
    letter-spacing: 0.05em;
}

.wf-step-select {
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: var(--text-secondary, #aaa);
    font-family: var(--font-mono, monospace);
    font-size: 11px;
    border-radius: 4px;
    padding: 2px 4px;
    height: 26px;
    cursor: pointer;
    flex-shrink: 0;
}

.wf-freq-bar-sep {
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, 0.09);
    margin: 0 2px;
    flex-shrink: 0;
}

.wf-span-display {
    font-family: var(--font-mono, monospace);
    font-size: 12px;
    color: var(--text-secondary, #888);
    min-width: 60px;
    white-space: nowrap;
}

/* Spectrum canvas */

.wf-spectrum-canvas-wrap {
    height: 108px;
    flex-shrink: 0;
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.09);
    background: radial-gradient(circle at 50% -120%, rgba(84, 140, 237, 0.18) 0%, rgba(84, 140, 237, 0) 65%);
}

#wfSpectrumCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Resize handle */

.wf-resize-handle {
    height: 7px;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.03);
    cursor: ns-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
    position: relative;
    z-index: 10;
}

.wf-resize-handle:hover,
.wf-resize-handle.dragging {
    background: rgba(74, 163, 255, 0.14);
}

.wf-resize-grip {
    width: 40px;
    height: 2px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 1px;
    transition: background 0.15s;
}

.wf-resize-handle:hover .wf-resize-grip,
.wf-resize-handle.dragging .wf-resize-grip {
    background: rgba(74, 163, 255, 0.6);
}

/* Waterfall canvas */

.wf-waterfall-canvas-wrap {
    flex: 1;
    min-height: 0;
    position: relative;
    overflow: hidden;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 44px 100%;
}

#wfWaterfallCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Center/tune lines */

.wf-center-line,
.wf-tune-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    pointer-events: none;
    z-index: 5;
}

.wf-center-line {
    left: calc(50% - 0.5px);
    background: rgba(255, 215, 0, 0.38);
}

.wf-tune-line {
    left: calc(50% - 0.5px);
    background: rgba(130, 220, 255, 0.75);
    box-shadow: 0 0 8px rgba(74, 163, 255, 0.4);
    opacity: 0;
    transition: opacity 140ms ease;
}

.wf-tune-line.is-visible {
    opacity: 1;
}

/* Frequency axis */

.wf-freq-axis {
    height: 21px;
    flex-shrink: 0;
    position: relative;
    background: rgba(8, 13, 24, 0.86);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.wf-freq-tick {
    position: absolute;
    top: 0;
    font-family: var(--font-mono, monospace);
    font-size: 9px;
    color: var(--text-dim, #555);
    transform: translateX(-50%);
    white-space: nowrap;
    padding-top: 3px;
}

.wf-freq-tick::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 1px;
    height: 3px;
    background: rgba(255, 255, 255, 0.2);
}

/* Hover tooltip */

.wf-tooltip {
    position: absolute;
    top: 4px;
    background: rgba(0, 0, 0, 0.84);
    color: var(--accent-cyan, #4aa3ff);
    font-family: var(--font-mono, monospace);
    font-size: 11px;
    padding: 2px 7px;
    border-radius: 4px;
    pointer-events: none;
    display: none;
    z-index: 10;
    white-space: nowrap;
    border: 1px solid rgba(74, 163, 255, 0.22);
}

@media (max-width: 1100px) {
    .wf-monitor-strip {
        grid-template-columns: repeat(2, minmax(220px, 1fr));
        grid-auto-rows: minmax(70px, auto);
    }

    .wf-rx-actions {
        grid-column: span 2;
    }

    .wf-rx-action-row {
        justify-content: flex-start;
    }
}

@media (max-width: 720px) {
    .wf-headline {
        flex-direction: column;
        align-items: flex-start;
    }

    .wf-headline-right {
        flex-wrap: wrap;
    }

    .wf-monitor-strip {
        grid-template-columns: 1fr;
    }

    .wf-rx-actions {
        grid-column: auto;
    }

    .wf-freq-bar {
        flex-wrap: wrap;
        row-gap: 8px;
    }

    .wf-freq-center-input {
        width: 96px;
    }
}