/* Переиспользуемый liquid glass: effect / tint / shine / text */

:root {
    --lg-blur: blur(3px);
    --lg-tint: rgba(255, 255, 255, 0.25);
    --lg-card-tint: var(--lg-tint);
    --lg-warp: transparent;
    --lg-border: rgba(255, 255, 255, 0.35);
    --lg-shadow: 0 6px 6px rgba(0, 0, 0, 0.2), 0 0 20px rgba(0, 0, 0, 0.1);
    --lg-shine: inset 2px 2px 1px 0 rgba(255, 255, 255, 0.5),
        inset -1px -1px 1px 1px rgba(255, 255, 255, 0.5);
    --lg-ease: cubic-bezier(0.175, 0.885, 0.32, 2.2);
    --lg-distortion-scale: 45;
}

.liquidGlass-wrapper {
    position: relative;
    display: flex;
    overflow: hidden;
    font-weight: 600;
    color: inherit;
    box-shadow: var(--lg-shadow);
    transition: all 0.4s var(--lg-ease);
}

.liquidGlass-effect {
    position: absolute;
    z-index: 0;
    inset: 0;
    background: var(--lg-warp);
    backdrop-filter: var(--lg-blur);
    -webkit-backdrop-filter: var(--lg-blur);
    overflow: hidden;
    pointer-events: none;
    border-radius: inherit;
}

.liquidGlass-wrapper--card > .liquidGlass-effect {
    display: none;
}

.liquidGlass-wrapper--card > .liquidGlass-tint {
    background: var(--lg-card-tint, var(--lg-tint));
}

.liquidGlass-tint {
    position: absolute;
    z-index: 1;
    inset: 0;
    background: var(--lg-tint);
    pointer-events: none;
    border-radius: inherit;
}

.liquidGlass-shine {
    position: absolute;
    z-index: 2;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    box-shadow: var(--lg-shine);
    border-radius: inherit;
}

.liquidGlass-text {
    position: relative;
    z-index: 3;
    width: 100%;
}

/* --- Card --- */

.liquidGlass-wrapper--card {
    width: 100%;
    background: transparent;
    border: 1px solid var(--lg-border);
    border-radius: var(--lg-card-radius, 1.25rem);
    text-align: left;
}

.liquidGlass-wrapper--card::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    border-radius: inherit;
    backdrop-filter: var(--lg-blur);
    -webkit-backdrop-filter: var(--lg-blur);
    filter: url(#glass-distortion);
    transform: translateZ(0);
    pointer-events: none;
}

.liquidGlass-wrapper--card > .liquidGlass-text {
    padding: var(--lg-card-pad, 1rem 1.25rem);
    font: inherit;
}

/* --- Field (input wrapper) --- */

.liquidGlass-wrapper--field {
    width: 100%;
    min-height: var(--lg-field-h, 2.75rem);
    border-radius: var(--lg-field-radius, 50vh);
    border: 1px solid var(--lg-border);
    cursor: text;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.liquidGlass-wrapper--field .liquidGlass-text {
    display: flex;
    align-items: stretch;
}

.liquidGlass-wrapper--field input,
.liquidGlass-wrapper--field textarea {
    display: block;
    width: 100%;
    min-height: inherit;
    padding: var(--lg-field-pad-y, 0.65rem) var(--lg-field-pad-x, 1rem);
    border: none;
    outline: none;
    background: transparent;
    color: #fff;
    font: inherit;
    font-weight: 600;
    letter-spacing: -0.02em;
    border-radius: inherit;
}

.liquidGlass-wrapper--field input::placeholder,
.liquidGlass-wrapper--field textarea::placeholder {
    color: rgba(255, 255, 255, 0.55);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.liquidGlass-wrapper--field:focus-within {
    box-shadow:
        0 4px 30px rgba(0, 0, 0, 0.1),
        0 0 0 3px rgba(255, 255, 255, 0.12);
}

.liquidGlass-wrapper--field > .liquidGlass-shine,
.liquidGlass-wrapper--button > .liquidGlass-shine {
    box-shadow: none;
}

/* --- Button --- */

button.liquidGlass-wrapper--button,
a.liquidGlass-wrapper--button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin: 0;
    padding: var(--lg-btn-pad-y, 0.65rem) var(--lg-btn-pad-x, 1rem);
    border: 1px solid var(--lg-border);
    border-radius: var(--lg-btn-radius, 1rem);
    background: transparent;
    color: #fff;
    font: inherit;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

button.liquidGlass-wrapper--button .liquidGlass-text,
a.liquidGlass-wrapper--button .liquidGlass-text {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
    transition: transform 0.4s var(--lg-ease);
}

@media (hover: hover) {
    button.liquidGlass-wrapper--button:hover,
    a.liquidGlass-wrapper--button:hover {
        padding: calc(var(--lg-btn-pad-y, 0.65rem) + 0.15rem) calc(var(--lg-btn-pad-x, 1rem) + 0.3rem);
        border-radius: calc(var(--lg-btn-radius, 1rem) + 0.25rem);
    }

    button.liquidGlass-wrapper--button:hover .liquidGlass-text,
    a.liquidGlass-wrapper--button:hover .liquidGlass-text {
        transform: scale(0.95);
    }
}

button.liquidGlass-wrapper--button:active,
a.liquidGlass-wrapper--button:active {
    transform: scale(0.98);
}

/* --- Demo variants (test page) --- */

.liquidGlass-wrapper.menu,
.liquidGlass-wrapper.menu > div {
    padding: 0.4rem;
    border-radius: 1.8rem;
    cursor: pointer;
}

.liquidGlass-wrapper.menu > .liquidGlass-effect {
    filter: url(#glass-distortion);
}

@media (hover: hover) {
    .liquidGlass-wrapper.menu:hover {
        padding: 0.6rem;
    }
}

.liquidGlass-wrapper.menu .liquidGlass-text > div {
    font-size: 20px;
    color: #fff;
    padding: 0.4rem 0.6rem;
    border-radius: 0.8rem;
    transition: background 0.1s ease-in;
}

@media (hover: hover) {
    .liquidGlass-wrapper.menu .liquidGlass-text > div:hover {
        background-color: rgba(255, 255, 255, 0.5);
        box-shadow: inset -2px -2px 2px rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(2px);
    }
}

.liquidGlass-wrapper.dock {
    border-radius: 2rem;
    padding: 0.6rem;
    cursor: pointer;
}

.liquidGlass-wrapper.dock > .liquidGlass-effect {
    filter: url(#glass-distortion);
}

@media (hover: hover) {
    .liquidGlass-wrapper.dock:hover {
        padding: 0.8rem;
        border-radius: 2.5rem;
    }
}

.liquidGlass-wrapper.dock .liquidGlass-text .dock {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.liquidGlass-wrapper.dock img {
    width: 75px;
    transition: transform 0.4s var(--lg-ease);
}

@media (hover: hover) {
    .liquidGlass-wrapper.dock img:hover {
        transform: scale(0.95);
    }
}

.liquidGlass-wrapper.button {
    padding: 1.5rem 2.5rem;
    border-radius: 3rem;
    cursor: pointer;
}

.liquidGlass-wrapper.button > .liquidGlass-effect {
    filter: url(#glass-distortion);
}

@media (hover: hover) {
    .liquidGlass-wrapper.button:hover {
        padding: 1.8rem 2.8rem;
        border-radius: 4rem;
    }

    .liquidGlass-wrapper.button:hover svg {
        transform: scale(0.95);
    }
}

.liquidGlass-wrapper.button svg {
    transition: transform 0.4s var(--lg-ease);
}

/* --- Performance & accessibility --- */

@media (max-width: 768px) and (hover: none) and (pointer: coarse) {
    .liquidGlass-wrapper--card::before,
    .liquidGlass-wrapper.menu > .liquidGlass-effect,
    .liquidGlass-wrapper.dock > .liquidGlass-effect,
    .liquidGlass-wrapper.button > .liquidGlass-effect {
        filter: none;
    }
}

@media (prefers-reduced-transparency: reduce) {
    .liquidGlass-effect,
    .liquidGlass-wrapper--card::before {
        filter: none !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    .liquidGlass-tint {
        background: rgba(36, 23, 26, 0.94) !important;
    }

    .liquidGlass-wrapper--card .liquidGlass-tint {
        background: rgba(36, 23, 26, 0.94) !important;
    }

    .liquidGlass-wrapper--field .liquidGlass-tint,
    .liquidGlass-wrapper--button .liquidGlass-tint {
        background: rgba(36, 23, 26, 0.88) !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    .liquidGlass-wrapper,
    .liquidGlass-wrapper--button .liquidGlass-text,
    .liquidGlass-wrapper.button svg {
        transition: none !important;
    }
}