@charset "utf-8";
.universal-buttons-container {
    position: fixed;
    z-index: 999999;
    bottom: clamp(20px, 3vw, 40px);
    right: clamp(20px, 3vw, 40px);
    display: flex;
    flex-direction: column;
    gap: clamp(12px, 2vw, 16px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(100px);
    pointer-events: none;
}
.universal-buttons-container.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.universal-button {
    width: clamp(52px, 6vw, 60px);
    height: clamp(52px, 6vw, 60px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    font-weight: 600;
    color: white;
    user-select: none;
    position: relative;
    border: none;
    outline: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    overflow: hidden;
}
.universal-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    opacity: 0.95;
    z-index: -1;
}
.universal-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: transform 0.6s ease;
}
.universal-button:hover::after {
    transform: translateX(200%);
}
#backToTopBtn {
    background: linear-gradient(135deg, rgba(74,108,247,0.95) 0%, rgba(106,140,255,0.95) 100%);
}
#backToTopBtn::before {
    background: linear-gradient(135deg, #4a6cf7 0%, #6a8cff 100%);
}
#backToTopBtn .btn-icon {
    font-size: clamp(20px, 2.5vw, 24px);
    line-height: 1;
    margin-top: -2px;
}
#backToTopBtn.visible {
    animation: buttonPulse 3s ease-in-out infinite;
}
#backToTopBtn {
    animation-delay: 0.1s;
}
#copyBtn {
    background: linear-gradient(135deg, rgba(52,199,89,0.95) 0%, rgba(93,216,121,0.95) 100%);
}
#copyBtn::before {
    background: linear-gradient(135deg, #34c759 0%, #5dd879 100%);
}
#copyBtn .btn-icon {
    font-size: clamp(12px, 2.2vw, 16px);
    line-height: 1;
}
#copyBtn {
    animation-delay: 0.2s;
}
.universal-button:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 28px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.15), inset 0 1px 0 rgba(255,255,255,0.3);
}
.universal-button:active {
    transform: translateY(-1px) scale(0.98);
    transition: all 0.1s ease;
}
.universal-button:focus-visible {
    outline: 2px solid rgba(255,255,255,0.8);
    outline-offset: 2px;
}
@media (hover: none) and (pointer: coarse) {
    .universal-button:hover {
        transform: none;
    }
    .universal-button:active {
        transform: scale(0.95);
    }
    .universal-button::after {
        display: none;
    }
}
.btn-tooltip {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.85);
    color: white;
    padding: clamp(8px, 1.2vw, 10px) clamp(12px, 1.8vw, 16px);
    border-radius: 8px;
    font-size: clamp(12px, 1.4vw, 14px);
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: 1;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.btn-tooltip::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 100%;
    transform: translateY(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: transparent transparent transparent rgba(0,0,0,0.85);
}
.universal-button:hover .btn-tooltip,
.universal-button:focus .btn-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(-4px);
}
.copy-success-toast,
.copy-error-toast {
    position: fixed;
    bottom: clamp(20px, 4vw, 40px);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    color: white;
    padding: clamp(12px, 1.8vw, 16px) clamp(20px, 3vw, 28px);
    border-radius: 12px;
    z-index: 999998;
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.5s ease;
    font-size: clamp(14px, 1.6vw, 16px);
    font-weight: 500;
    text-align: center;
    min-width: clamp(200px, 40vw, 280px);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    opacity: 0;
    role: alert;
    aria-live: polite;
}
.copy-success-toast {
    background: linear-gradient(135deg, rgba(52,199,89,0.95) 0%, rgba(93,216,121,0.95) 100%);
}
.copy-error-toast {
    background: linear-gradient(135deg, rgba(255,59,48,0.95) 0%, rgba(255,105,97,0.95) 100%);
}
.copy-success-toast.show,
.copy-error-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    z-index: 999999;
}
.copy-success-toast .toast-icon,
.copy-error-toast .toast-icon {
    font-size: 20px;
    color: #ffffff;
}
@media (prefers-color-scheme: dark) {
    .universal-button::before {
        opacity: 1;
    }
    .btn-tooltip {
        background: rgba(255,255,255,0.15);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border: 1px solid rgba(255,255,255,0.1);
    }
    .btn-tooltip::after {
        border-color: transparent transparent transparent rgba(255,255,255,0.15);
    }
}
@media (max-width: 320px) {
    .universal-buttons-container {
        bottom: 16px;
        right: 16px;
        gap: 10px;
    }
    .universal-button {
        width: 50px;
        height: 50px;
    }
    .btn-tooltip {
        font-size: 11px;
        padding: 6px 10px;
    }
}
@media (min-width: 769px) and (max-width: 1024px) {
    .universal-buttons-container {
        bottom: 30px;
        right: 30px;
    }
}
@media (min-width: 1921px) {
    .universal-buttons-container {
        bottom: 50px;
        right: 50px;
    }
    .universal-button {
        width: 65px;
        height: 65px;
    }
}
@media (max-height: 500px) and (orientation: landscape) {
    .universal-buttons-container {
        bottom: 15px;
        right: 15px;
        gap: 8px;
    }
    .universal-button {
        width: 45px;
        height: 45px;
    }
    #backToTopBtn .btn-icon {
        font-size: 18px;
    }
    #copyBtn .btn-icon {
        font-size: 11px;
    }
}
@media (max-width: 768px) {
    .universal-buttons-container {
        bottom: max(20px, env(safe-area-inset-bottom, 20px));
        right: max(20px, env(safe-area-inset-right, 20px));
    }
    .btn-tooltip {
        display: none;
    }
}
@keyframes buttonAppearFromBottom {
    0% {
        opacity: 0;
        transform: translateY(100px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}
.universal-buttons-container.visible .universal-button {
    animation: buttonAppearFromBottom 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
@keyframes buttonPulse {
    0%, 100% {
        box-shadow: 0 6px 20px rgba(0,0,0,0.15), 0 2px 6px rgba(0,0,0,0.1), inset 0 1px 0 rgba(255,255,255,0.2);
    }
    50% {
        box-shadow: 0 6px 20px rgba(74,108,247,0.25), 0 2px 6px rgba(74,108,247,0.2), inset 0 1px 0 rgba(255,255,255,0.2);
    }
}