/* Apple-inspired interaction & materials — site overrides (do not edit theme CSS) */

:root {
    --apple-ease: cubic-bezier(0.32, 0.72, 0, 1);
    --apple-press-duration: 100ms;
    --apple-ui-duration: 200ms;
    --apple-sheet-duration: 350ms;
}

/* --- 1. Response: press feedback --- */
.btn {
    transition:
        color 0.15s ease-in-out,
        background-color 0.15s ease-in-out,
        border-color 0.15s ease-in-out,
        box-shadow 0.15s ease-in-out,
        transform var(--apple-press-duration) ease-out;
}

.btn:active:not(:disabled):not(.disabled) {
    transform: scale(0.97);
}

.nk-menu-link {
    transition: color 0.15s ease-out, transform var(--apple-press-duration) ease-out;
}

.nk-menu-link:active {
    transform: scale(0.98);
}

.messenger-tile {
    transition: transform var(--apple-press-duration) ease-out;
}

.messenger-tile:active,
a.messenger-tile:active {
    transform: scale(0.97);
}

/* --- 2–3. Header: frosted material + non-linear easing --- */
.nk-header-main {
    transition:
        padding 0.3s var(--apple-ease),
        background-color 0.3s var(--apple-ease),
        box-shadow 0.3s var(--apple-ease),
        backdrop-filter 0.3s var(--apple-ease),
        -webkit-backdrop-filter 0.3s var(--apple-ease);
}

.nk-header-main.has-fixed {
    background: rgba(255, 255, 255, 0.72);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.45);
}

.is-dark .nk-header-main.has-fixed,
.nk-header-main.has-fixed.on-dark {
    background: rgba(30, 30, 84, 0.78);
    border-bottom-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

/* --- 4. Dropdown: spatial enter from trigger --- */
@media (min-width: 992px) {
    [data-menu-collapse="lg"] .nk-menu-dropdown {
        transform: scale(0.96) translateY(-6px);
        transform-origin: top center;
        transition:
            opacity var(--apple-ui-duration) ease-out,
            transform var(--apple-ui-duration) ease-out,
            visibility var(--apple-ui-duration);
        background: rgba(255, 255, 255, 0.86);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        backdrop-filter: blur(20px) saturate(180%);
        border: 1px solid rgba(148, 163, 184, 0.18);
        box-shadow: 0 12px 40px rgba(15, 23, 42, 0.1);
    }

    [data-menu-collapse="lg"] .nk-menu-item:hover > .nk-menu-dropdown,
    [data-menu-collapse="lg"] .nk-menu-item:focus-within > .nk-menu-dropdown {
        transform: scale(1) translateY(0);
    }

    [data-menu-collapse="lg"] .has-fixed .nk-menu-dropdown,
    [data-menu-collapse="lg"] .on-dark .nk-menu-dropdown,
    [data-menu-collapse="lg"].is-dark .nk-menu-dropdown {
        background: rgba(255, 255, 255, 0.9);
    }

    .is-dark [data-menu-collapse="lg"] .nk-menu-dropdown,
    [data-menu-collapse="lg"] .is-dark .nk-menu-dropdown,
    [data-menu-collapse="lg"] .on-dark .nk-menu-dropdown {
        background: rgba(33, 33, 92, 0.9);
        border-color: rgba(255, 255, 255, 0.08);
    }
}

/* --- 7. Mobile nav: interruptible transform + frosted sheet --- */
.nk-header-menu.menu-mobile {
    transition: transform var(--apple-sheet-duration) var(--apple-ease);
    background: rgba(255, 255, 255, 0.92);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    backdrop-filter: blur(24px) saturate(180%);
    box-shadow: 8px 0 40px rgba(15, 23, 42, 0.12);
}

.on-dark .nk-header-menu.menu-mobile,
.is-dark .nk-header-menu.menu-mobile {
    background: rgba(30, 30, 84, 0.92);
}

.header-menu-overlay {
    opacity: 0;
    transition: opacity var(--apple-sheet-duration) var(--apple-ease);
    animation: none !important;
    background: rgba(15, 23, 42, 0.35);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
}

.header-menu-shown .header-menu-overlay {
    opacity: 1;
    animation: none !important;
}

/* --- Typography --- */
.nk-hero .title.display-6,
.section-head .title.h1,
.block-text .title.h1 {
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.title.h2,
.title.h3 {
    letter-spacing: -0.015em;
}

.nk-hero-brand {
    display: inline-block;
    margin-bottom: 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--bs-primary);
}

.nk-hero-note {
    margin-top: 1rem;
    font-size: 0.9375rem;
    color: var(--bs-secondary-color, #64748b);
}

.nk-hero-note strong {
    color: var(--bs-primary);
    font-weight: 600;
}

/* --- 9. Flatten non-interactive cards --- */
.feature-plain {
    padding-top: 0.5rem;
}

.feature-plain .feature-media {
    margin-top: 0 !important;
    margin-bottom: 1rem;
}

.feature-plain .feature-text .title {
    margin-bottom: 0.75rem;
}

.messengers-row .messenger-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    height: 100%;
    padding: 1rem 0.5rem;
    text-align: center;
    text-decoration: none;
    color: inherit;
    background: transparent;
    border: none;
    box-shadow: none;
}

.messengers-row .messenger-tile--add {
    border: 1.5px dashed rgba(148, 163, 184, 0.45);
    border-radius: 1rem;
    padding: 1.25rem 0.75rem;
}

.messengers-row .messenger-tile--add:hover {
    border-color: var(--bs-primary);
    background: rgba(var(--bs-primary-rgb), 0.04);
}

/* --- 10. How-it-works step emphasis --- */
.how-step {
    opacity: 0.45;
    transform: translateY(16px);
    transition:
        opacity 0.45s var(--apple-ease),
        transform 0.45s var(--apple-ease);
    will-change: opacity, transform;
}

.how-step.is-active {
    opacity: 1;
    transform: none;
}

.how-step .block-gfx img {
    transition: transform 0.45s var(--apple-ease), box-shadow 0.45s var(--apple-ease);
}

.how-step.is-active .block-gfx img {
    transform: scale(1.01);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.1);
}

/* --- Demo widget sheet --- */
#demowidget {
    opacity: 0;
    transform: scale(0.985);
    transform-origin: center center;
    transition:
        opacity var(--apple-sheet-duration) var(--apple-ease),
        transform var(--apple-sheet-duration) var(--apple-ease);
    pointer-events: none;
}

#demowidget.is-open {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

/* --- Accessibility --- */
@media (prefers-reduced-transparency: reduce) {
    .nk-header-main.has-fixed {
        background: #fff;
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
    }

    .is-dark .nk-header-main.has-fixed,
    .nk-header-main.has-fixed.on-dark {
        background: #1e1e54;
    }

    .nk-header-menu.menu-mobile {
        background: #fff;
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
    }

    .on-dark .nk-header-menu.menu-mobile,
    .is-dark .nk-header-menu.menu-mobile {
        background: #1e1e54;
    }

    .header-menu-overlay {
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
    }

    @media (min-width: 992px) {
        [data-menu-collapse="lg"] .nk-menu-dropdown {
            background: #fff;
            -webkit-backdrop-filter: none;
            backdrop-filter: none;
        }

        .is-dark [data-menu-collapse="lg"] .nk-menu-dropdown,
        [data-menu-collapse="lg"] .on-dark .nk-menu-dropdown {
            background: #21215c;
        }
    }
}

@media (prefers-reduced-motion: reduce) {
    .btn,
    .nk-menu-link,
    .messenger-tile,
    .how-step,
    .how-step .block-gfx img,
    #demowidget,
    .nk-header-menu.menu-mobile,
    .header-menu-overlay {
        transition: none;
    }

    .btn:active:not(:disabled):not(.disabled),
    .nk-menu-link:active,
    .messenger-tile:active {
        transform: none;
    }

    .nk-header-main {
        transition: none;
    }

    .how-step {
        opacity: 1;
        transform: none;
    }

    .how-step.is-active .block-gfx img {
        transform: none;
        box-shadow: none;
    }

    #demowidget {
        transform: none;
    }

    @media (min-width: 992px) {
        [data-menu-collapse="lg"] .nk-menu-dropdown {
            transition: none;
            transform: none;
        }
    }
}