.menu-btn {
    padding: 10px 20px;
    font-size: 1.1em;
    font-weight: bold;
    color: var(--color-primary);
    background-color: rgba(0, 80, 80, 0.8);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-button);
    text-align: center;
    width: 250px;
    text-transform: uppercase;
    text-shadow: var(--shadow-text);
}

.menu-btn:not(:disabled):hover {
    background-color: rgba(0, 120, 120, 0.9);
    color: #fff;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
    transform: translateY(-1px);
}

.menu-btn:disabled {
    color: #666;
    border-color: #666;
    background-color: rgba(80, 80, 80, 0.6);
    cursor: not-allowed;
    text-shadow: none;
}

#system-control-button {
    background: none;
    border: none;
    font-family: var(--font-family-primary);
    cursor: pointer;
    transition: var(--transition-color);
    color: #aaa;
    font-size: 0.9em;
    font-weight: bold;
    padding: 0;
    text-shadow: none;
}

#system-control-button:hover {
    color: #fff;
}

.attack-btn {
    padding: var(--button-padding);
    font-size: 0.85em;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: var(--font-weight-bold);
    transition: var(--transition-button);
    min-width: 60px;
}

.attack-btn.confirm {
    background: var(--button-bg-primary);
    color: var(--color-text-primary);
    border: var(--border-primary);
}

.attack-btn.confirm:hover {
    background: var(--button-bg-primary-hover);
    box-shadow: var(--shadow-glow-lg);
    transform: translateY(-2px);
}

.attack-btn.launch {
    background: var(--button-bg-secondary);
    color: var(--color-text-primary);
    border: 2px solid #0af;
}

.attack-btn.launch:hover {
    background: var(--button-bg-secondary-hover);
    box-shadow: 0 0 15px rgba(0, 170, 255, 0.5);
    transform: translateY(-2px);
}

.attack-btn.cancel {
    background: var(--button-bg-danger);
    color: var(--color-text-primary);
    border: var(--border-danger);
}

.attack-btn.cancel:hover {
    background: var(--button-bg-danger-hover);
    box-shadow: 0 0 15px rgba(255, 0, 0, 0.5);
    transform: translateY(-2px);
}

.action-btn {
    padding: 6px 12px;
    font-size: 0.7em;
    font-weight: var(--font-weight-bold);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-button);
    font-family: var(--font-family-primary);
    background: rgba(0, 80, 80, 0.8);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    text-shadow: var(--shadow-text);
    text-transform: uppercase;
    display: inline-flex;
    justify-content: center;
    align-items: center;

    flex: 1;
    min-width: 0;
}

.launch-btn.enabled {
    background: var(--button-bg-primary);
    color: var(--color-text-primary);
    border: var(--border-primary);
    box-shadow: var(--shadow-glow-primary);
}

.launch-btn.enabled:hover {
    background: var(--button-bg-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow-lg);
}

.action-btn.disabled {
    background: rgba(0, 80, 80, 0.8);
    color: var(--color-primary);
    border-color: var(--color-primary);
    cursor: pointer;
    text-shadow: var(--shadow-text);
    box-shadow: none;
}

.game-modal button {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-base);
    background-color: var(--color-success);
    color: var(--color-text-primary);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-background);
}

.game-modal button:hover {
    background-color: #006666;
}

#planet-control-panel button {
    padding: var(--button-padding);
    font-size: 0.85em;
    background-color: var(--color-success);
    color: var(--color-text-primary);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-background);
    margin-top: var(--space-sm);
}

#planet-control-panel button:hover {
    background-color: #006666;
}

.building-option-btn {
    padding: 12px 15px !important;
    font-size: 0.9em !important;
    background-color: var(--color-bg-button) !important;
    color: var(--color-text-primary) !important;
    border: 1px solid var(--color-primary) !important;
    border-radius: var(--border-radius) !important;
    cursor: pointer !important;
    transition: var(--transition-button) !important;
    text-align: left !important;
    margin: 0 !important;
    width: 100%;
    box-sizing: border-box;
}

.building-option-btn:hover {
    background-color: var(--color-bg-button-hover) !important;
    border-color: var(--color-secondary) !important;
}

.building-option-btn:disabled {
    background-color: rgba(80, 0, 0, 0.5) !important;
    border-color: #800 !important;
    cursor: not-allowed !important;
    opacity: 0.6;
}

.close-button-x {
    position: absolute;
    top: 5px;
    right: 10px;
    font-size: 1.3em;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    cursor: pointer;
    transition: var(--transition-color);
    z-index: var(--z-base);
}

.close-button-x:hover {
    color: var(--color-text-primary);
}