:root {
    --air-pwa-primary: var(--air-primary, #38bdf8);
    --air-pwa-primary-hover: #0ea5e9;
    --air-pwa-primary-soft: rgba(56, 189, 248, 0.14);

    --air-pwa-background: #ffffff;
    --air-pwa-surface: #f8fafc;
    --air-pwa-text: #0f172a;
    --air-pwa-muted: #64748b;
    --air-pwa-border: rgba(15, 23, 42, 0.1);

    --air-pwa-shadow:
        0 25px 70px rgba(15, 23, 42, 0.28);
}

html[data-theme="dark"] {
    --air-pwa-background: #111827;
    --air-pwa-surface: #172033;
    --air-pwa-text: #f8fafc;
    --air-pwa-muted: #a7b0c0;
    --air-pwa-border: rgba(255, 255, 255, 0.1);
    --air-pwa-primary-soft: rgba(56, 189, 248, 0.16);

    --air-pwa-shadow:
        0 28px 80px rgba(0, 0, 0, 0.55);
}

body.air-pwa-lock {
    overflow: hidden !important;
}

/*
|--------------------------------------------------------------------------
| Install Modal Wrapper
|--------------------------------------------------------------------------
*/

.air-pwa-modal {
    position: fixed;
    inset: 0;
    z-index: 999999;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 20px;

    visibility: hidden;
    opacity: 0;
    pointer-events: none;

    transition:
        opacity 0.25s ease,
        visibility 0.25s ease;
}

.air-pwa-modal.is-visible {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.air-pwa-modal__backdrop {
    position: absolute;
    inset: 0;

    width: 100%;
    height: 100%;

    margin: 0;
    padding: 0;

    border: 0;

    background: rgba(2, 6, 23, 0.72);

    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);

    cursor: default;
}

/*
|--------------------------------------------------------------------------
| Install Modal Card
|--------------------------------------------------------------------------
*/

.air-pwa-modal__card {
    position: relative;
    z-index: 2;

    width: min(100%, 390px);

    padding: 28px;

    border: 1px solid var(--air-pwa-border);
    border-radius: 24px;

    background:
        radial-gradient(
            circle at top right,
            var(--air-pwa-primary-soft),
            transparent 42%
        ),
        var(--air-pwa-background);

    color: var(--air-pwa-text);

    box-shadow: var(--air-pwa-shadow);

    text-align: center;

    transform: translateY(20px) scale(0.97);

    transition: transform 0.25s ease;
}

.air-pwa-modal.is-visible .air-pwa-modal__card {
    transform: translateY(0) scale(1);
}

/*
|--------------------------------------------------------------------------
| Close Button
|--------------------------------------------------------------------------
*/

.air-pwa-modal__close {
    position: absolute;
    top: 14px;
    right: 14px;

    width: 37px;
    height: 37px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    margin: 0;
    padding: 0;

    border: 1px solid var(--air-pwa-border);
    border-radius: 50%;

    background: var(--air-pwa-surface);
    color: var(--air-pwa-muted);

    font-size: 15px;

    cursor: pointer;

    transition:
        background 0.2s ease,
        color 0.2s ease,
        transform 0.2s ease;
}

.air-pwa-modal__close:hover {
    background: var(--air-pwa-primary-soft);
    color: var(--air-pwa-primary);

    transform: rotate(7deg);
}

.air-pwa-modal__close:focus-visible {
    outline: 3px solid var(--air-pwa-primary-soft);
    outline-offset: 2px;
}

/*
|--------------------------------------------------------------------------
| App Icon
|--------------------------------------------------------------------------
*/

.air-pwa-modal__icon {
    width: 88px;
    height: 88px;

    margin: 3px auto 18px;
    padding: 4px;

    overflow: hidden;

    border: 1px solid var(--air-pwa-border);
    border-radius: 25px;

    background: var(--air-pwa-surface);

    box-shadow:
        0 16px 35px rgba(15, 23, 42, 0.18);
}

.air-pwa-modal__icon img {
    width: 100%;
    height: 100%;

    display: block;

    border-radius: 20px;

    object-fit: cover;
}

/*
|--------------------------------------------------------------------------
| Modal Text
|--------------------------------------------------------------------------
*/

.air-pwa-modal__label {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    margin-bottom: 10px;
    padding: 7px 12px;

    border-radius: 999px;

    background: var(--air-pwa-primary-soft);
    color: var(--air-pwa-primary);

    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.08em;
    line-height: 1;
    text-transform: uppercase;
}

.air-pwa-modal__content h2 {
    margin: 0 0 10px;

    color: var(--air-pwa-text);

    font-size: 25px;
    font-weight: 800;
    line-height: 1.2;
}

.air-pwa-modal__content p {
    margin: 0;

    color: var(--air-pwa-muted);

    font-size: 13px;
    line-height: 1.65;
}

/*
|--------------------------------------------------------------------------
| iPhone Installation Guide
|--------------------------------------------------------------------------
*/

.air-pwa-ios-guide {
    display: flex;
    align-items: center;
    gap: 11px;

    margin-top: 18px;
    padding: 13px 14px;

    border: 1px solid var(--air-pwa-border);
    border-radius: 14px;

    background: var(--air-pwa-surface);

    text-align: left;
}

.air-pwa-ios-guide[hidden] {
    display: none !important;
}

.air-pwa-ios-guide__icon {
    flex: 0 0 36px;

    width: 36px;
    height: 36px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    border-radius: 11px;

    background: var(--air-pwa-primary-soft);
    color: var(--air-pwa-primary);

    font-size: 18px;
}

.air-pwa-ios-guide p {
    margin: 0;

    color: var(--air-pwa-muted);

    font-size: 11px;
    line-height: 1.55;
}

.air-pwa-ios-guide strong {
    color: var(--air-pwa-text);
}

/*
|--------------------------------------------------------------------------
| Action Buttons
|--------------------------------------------------------------------------
*/

.air-pwa-modal__actions {
    display: grid;
    grid-template-columns: 1.25fr 0.85fr;
    align-items: stretch;
    gap: 10px;

    margin-top: 22px;
}

.air-pwa-button {
    width: 100%;
    min-width: 0;
    min-height: 50px;

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;

    margin: 0;
    padding: 11px 14px;

    border-radius: 14px;

    font-size: 13px;
    font-weight: 800;
    line-height: 1.2;
    white-space: nowrap;

    cursor: pointer;

    transition:
        transform 0.2s ease,
        background 0.2s ease,
        color 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.air-pwa-button i {
    flex: 0 0 auto;

    font-size: 13px;
}

.air-pwa-button span {
    min-width: 0;
}

.air-pwa-button:hover {
    transform: translateY(-1px);
}

.air-pwa-button:focus-visible {
    outline: 3px solid var(--air-pwa-primary-soft);
    outline-offset: 2px;
}

.air-pwa-button:disabled {
    cursor: not-allowed;
    opacity: 0.65;

    transform: none;
}

.air-pwa-button--install {
    grid-column: 1;

    border: 1px solid transparent;

    background: var(--air-pwa-primary);
    color: #ffffff;

    box-shadow:
        0 12px 25px rgba(56, 189, 248, 0.25);
}

.air-pwa-button--install:hover {
    background: var(--air-pwa-primary-hover);
}

.air-pwa-button--later {
    grid-column: 2;

    border: 1px solid var(--air-pwa-border);

    background: var(--air-pwa-surface);
    color: var(--air-pwa-text);
}

.air-pwa-button--later:hover {
    border-color: rgba(56, 189, 248, 0.24);

    background: var(--air-pwa-primary-soft);
}

/*
|--------------------------------------------------------------------------
| Floating Install Button
|--------------------------------------------------------------------------
*/

.air-pwa-floating-button {
    position: fixed;
    right: 18px;
    bottom: 82px;
    z-index: 99990;

    min-height: 46px;

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;

    margin: 0;
    padding: 10px 15px;

    border: 0;
    border-radius: 999px;

    background: var(--air-pwa-primary);
    color: #ffffff;

    box-shadow:
        0 15px 35px rgba(15, 23, 42, 0.28);

    font-size: 12px;
    font-weight: 800;

    cursor: pointer;

    transition:
        transform 0.2s ease,
        background 0.2s ease,
        box-shadow 0.2s ease;
}

.air-pwa-floating-button[hidden] {
    display: none !important;
}

.air-pwa-floating-button:hover {
    background: var(--air-pwa-primary-hover);

    box-shadow:
        0 18px 40px rgba(15, 23, 42, 0.34);

    transform: translateY(-2px);
}

.air-pwa-floating-button:focus-visible {
    outline: 3px solid var(--air-pwa-primary-soft);
    outline-offset: 3px;
}

/*
|--------------------------------------------------------------------------
| PWA Update Notification
|--------------------------------------------------------------------------
*/

.air-pwa-update {
    position: fixed;
    left: 50%;
    bottom: 20px;
    z-index: 1000000;

    width: min(calc(100% - 28px), 470px);
    min-height: 68px;

    display: flex;
    align-items: center;
    gap: 11px;

    padding: 11px 12px;

    border: 1px solid var(--air-pwa-border);
    border-radius: 17px;

    background: var(--air-pwa-background);
    color: var(--air-pwa-text);

    box-shadow: var(--air-pwa-shadow);

    visibility: hidden;
    opacity: 0;
    pointer-events: none;

    transform: translate(-50%, 20px);

    transition:
        opacity 0.25s ease,
        visibility 0.25s ease,
        transform 0.25s ease;
}

.air-pwa-update.is-visible {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;

    transform: translate(-50%, 0);
}

.air-pwa-update__icon {
    flex: 0 0 40px;

    width: 40px;
    height: 40px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    border-radius: 12px;

    background: var(--air-pwa-primary-soft);
    color: var(--air-pwa-primary);
}

.air-pwa-update__content {
    flex: 1;
    min-width: 0;
}

.air-pwa-update__content strong,
.air-pwa-update__content small {
    display: block;
}

.air-pwa-update__content strong {
    color: var(--air-pwa-text);

    font-size: 12px;
    font-weight: 800;
}

.air-pwa-update__content small {
    margin-top: 2px;

    color: var(--air-pwa-muted);

    font-size: 10px;
}

.air-pwa-update__refresh {
    min-height: 36px;

    padding: 8px 13px;

    border: 0;
    border-radius: 10px;

    background: var(--air-pwa-primary);
    color: #ffffff;

    font-size: 11px;
    font-weight: 800;

    cursor: pointer;
}

.air-pwa-update__refresh:hover {
    background: var(--air-pwa-primary-hover);
}

.air-pwa-update__close {
    width: 31px;
    height: 31px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    margin: 0;
    padding: 0;

    border: 0;
    border-radius: 50%;

    background: transparent;
    color: var(--air-pwa-muted);

    cursor: pointer;
}

.air-pwa-update__close:hover {
    background: var(--air-pwa-primary-soft);
    color: var(--air-pwa-primary);
}

/*
|--------------------------------------------------------------------------
| Tablet and Mobile
|--------------------------------------------------------------------------
*/

@media (max-width: 575px) {
    .air-pwa-modal {
        align-items: flex-end;

        padding: 0;
    }

    .air-pwa-modal__card {
        width: 100%;
        max-width: none;

        padding:
            25px
            20px
            calc(20px + env(safe-area-inset-bottom));

        border-right: 0;
        border-bottom: 0;
        border-left: 0;

        border-radius: 25px 25px 0 0;

        transform: translateY(100%);
    }

    .air-pwa-modal.is-visible .air-pwa-modal__card {
        transform: translateY(0);
    }

    .air-pwa-modal__close {
        top: 13px;
        right: 13px;

        width: 36px;
        height: 36px;
    }

    .air-pwa-modal__icon {
        width: 76px;
        height: 76px;

        margin-bottom: 15px;

        border-radius: 21px;
    }

    .air-pwa-modal__icon img {
        border-radius: 16px;
    }

    .air-pwa-modal__label {
        margin-bottom: 9px;

        padding: 6px 11px;

        font-size: 9px;
    }

    .air-pwa-modal__content h2 {
        margin-bottom: 8px;

        font-size: 23px;
    }

    .air-pwa-modal__content p {
        font-size: 12px;
        line-height: 1.55;
    }

    .air-pwa-ios-guide {
        margin-top: 15px;
    }

    /*
    |--------------------------------------------------------------------------
    | Buttons Stay Left and Right on Small Screens
    |--------------------------------------------------------------------------
    */

    .air-pwa-modal__actions {
        grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
        gap: 9px;

        margin-top: 19px;
    }

    .air-pwa-button {
        min-height: 48px;

        padding: 10px 11px;

        border-radius: 13px;

        font-size: 12px;
    }

    .air-pwa-button i {
        font-size: 12px;
    }

    .air-pwa-button--install {
        grid-column: 1;
    }

    .air-pwa-button--later {
        grid-column: 2;
    }

    .air-pwa-floating-button {
        right: 13px;
        bottom: calc(72px + env(safe-area-inset-bottom));
    }

    .air-pwa-update {
        bottom: calc(12px + env(safe-area-inset-bottom));
    }

    .air-pwa-update__content small {
        display: none;
    }
}

/*
|--------------------------------------------------------------------------
| Very Small Mobile Screens
|--------------------------------------------------------------------------
*/

@media (max-width: 380px) {
    .air-pwa-modal__card {
        padding:
            23px
            15px
            calc(17px + env(safe-area-inset-bottom));
    }

    .air-pwa-modal__icon {
        width: 70px;
        height: 70px;

        margin-bottom: 13px;
    }

    .air-pwa-modal__content h2 {
        font-size: 21px;
    }

    .air-pwa-modal__content p {
        font-size: 11px;
    }

    .air-pwa-modal__actions {
        grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
        gap: 7px;
    }

    .air-pwa-button {
        min-height: 45px;

        gap: 6px;

        padding: 9px 8px;

        font-size: 11px;
    }

    .air-pwa-button i {
        font-size: 11px;
    }
}

/*
|--------------------------------------------------------------------------
| Short Landscape Screens
|--------------------------------------------------------------------------
*/

@media (max-height: 560px) and (orientation: landscape) {
    .air-pwa-modal {
        align-items: center;

        padding: 10px;
    }

    .air-pwa-modal__card {
        width: min(100%, 410px);
        max-height: calc(100vh - 20px);

        overflow-y: auto;

        padding: 20px;

        border: 1px solid var(--air-pwa-border);
        border-radius: 21px;
    }

    .air-pwa-modal__icon {
        width: 62px;
        height: 62px;

        margin-bottom: 10px;
    }

    .air-pwa-modal__label {
        margin-bottom: 7px;
    }

    .air-pwa-modal__content h2 {
        margin-bottom: 6px;

        font-size: 20px;
    }

    .air-pwa-modal__content p {
        font-size: 11px;
    }

    .air-pwa-modal__actions {
        grid-template-columns: 1.2fr 0.8fr;

        margin-top: 14px;
    }

    .air-pwa-button {
        min-height: 43px;
    }
}

/*
|--------------------------------------------------------------------------
| Reduced Motion
|--------------------------------------------------------------------------
*/

@media (prefers-reduced-motion: reduce) {
    .air-pwa-modal,
    .air-pwa-modal__card,
    .air-pwa-button,
    .air-pwa-floating-button,
    .air-pwa-update {
        transition: none !important;
    }
}