/*
 * Platform overview — issue #3.
 *
 * The page follows the supplied overview mockups while reusing Glomnia's public
 * design tokens, buttons, icon set, menu artwork, and truthful SiteStats strip.
 */

.gl-platform {
    overflow: hidden;
}

.gl-platform-eyebrow {
    color: var(--gl-gold-deep);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.gl-platform-title-rule {
    display: block;
    width: 3rem;
    height: 2px;
    background: var(--gl-gold);
}

.gl-platform-hero {
    position: relative;
    isolation: isolate;
    background:
        radial-gradient(circle at 86% 28%, color-mix(in srgb, var(--gl-accent-soft) 82%, transparent), transparent 31rem),
        linear-gradient(180deg, var(--gl-surface) 0%, var(--gl-bg) 100%);
}

.gl-platform-hero::after {
    content: "";
    position: absolute;
    z-index: -1;
    top: 0;
    right: -7rem;
    width: min(52vw, 46rem);
    height: 100%;
    opacity: 0.32;
    background-image: radial-gradient(circle, var(--gl-accent-2) 1px, transparent 1.5px);
    background-size: 34px 34px;
    mask-image: linear-gradient(90deg, transparent, #000 25%, #000);
}

.gl-platform-hero__layout {
    display: grid;
    grid-template-columns: 17.5rem minmax(0, 1fr);
    min-height: 38rem;
}

.gl-platform-rail {
    padding: clamp(1.5rem, 4vw, 3.25rem) 1.5rem clamp(2rem, 5vw, 4.5rem) 0;
    border-right: 1px solid var(--gl-line);
}

.gl-platform-rail ul {
    display: grid;
    gap: 0.5rem;
}

.gl-platform-rail__link {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.8rem;
    align-items: start;
    margin-left: -1rem;
    padding: 1rem;
    border-left: 2px solid transparent;
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
    color: var(--gl-ink);
    text-decoration: none;
    transition: background-color 0.2s var(--ease-calm), border-color 0.2s var(--ease-calm), transform 0.3s var(--ease);
}

.gl-platform-rail__link:hover {
    background: var(--gl-surface-2);
    transform: translateX(2px);
}

.gl-platform-rail__link.is-current {
    border-left-color: var(--gl-gold);
    background: var(--gl-gold-soft);
}

.gl-platform-rail__icon {
    color: var(--gl-accent-deep);
}

.gl-platform-rail__icon .gl-icon {
    width: 1.75rem;
    height: 1.75rem;
}

.gl-platform-rail__link strong,
.gl-platform-rail__link small {
    display: block;
}

.gl-platform-rail__link strong {
    font-size: 0.875rem;
    line-height: 1.3;
}

.gl-platform-rail__link small {
    margin-top: 0.2rem;
    color: var(--gl-ink-3);
    font-size: 0.75rem;
    line-height: 1.4;
}

.gl-platform-hero__content {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(19rem, 0.95fr);
    gap: clamp(1.5rem, 3vw, 3rem);
    align-items: center;
    padding: clamp(3.5rem, 7vw, 6rem) 0 clamp(4rem, 8vw, 7rem) clamp(2rem, 5vw, 4.75rem);
}

.gl-platform-hero__copy {
    position: relative;
    z-index: 2;
    display: grid;
    justify-items: start;
    gap: 1.35rem;
}

.gl-platform-hero__copy h1 {
    max-width: 17ch;
    font-size: clamp(2.25rem, 1.4rem + 2.6vw, 3.5rem);
    font-weight: 680;
    letter-spacing: -0.045em;
    line-height: 1.08;
}

.gl-platform-hero__lede {
    max-width: 49ch;
    color: var(--gl-ink-2);
    font-size: 1rem;
    line-height: 1.7;
}

.gl-platform-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
}

.gl-platform-actions .gl-btn .gl-icon,
.gl-platform-text-link .gl-icon {
    width: 1rem;
    height: 1rem;
}

.gl-platform-text-link {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 2.75rem;
    color: var(--gl-accent-deep);
    font-size: 0.875rem;
    font-weight: 650;
    text-decoration: none;
}

.gl-platform-text-link:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

.gl-platform-network {
    position: relative;
    min-height: 24rem;
}

.gl-platform-network > .gl-mega__art {
    position: absolute;
    inset: 3rem -5rem auto -2rem;
}

.gl-platform-network > .gl-mega__art svg {
    height: 20rem;
}

.gl-platform-network__hub,
.gl-platform-network__node {
    position: absolute;
    z-index: 2;
    display: grid;
    place-items: center;
    border: 1px solid var(--gl-line-2);
    border-radius: 50%;
    background: var(--gl-surface);
    color: var(--gl-accent-deep);
    box-shadow: var(--sh-2);
}

.gl-platform-network__hub {
    top: 8rem;
    left: 42%;
    width: 5.25rem;
    height: 5.25rem;
    border: 2px solid var(--gl-gold);
    font-size: 2.5rem;
    font-weight: 700;
}

.gl-platform-network__node {
    width: 3.5rem;
    height: 3.5rem;
}

.gl-platform-network__node .gl-icon {
    width: 1.75rem;
    height: 1.75rem;
}

.gl-platform-network__node--company { top: 2rem; right: 12%; }
.gl-platform-network__node--product { right: 4%; bottom: 3.5rem; }
.gl-platform-network__node--relationship { left: 6%; bottom: 2rem; }

.gl-platform-search {
    position: relative;
    z-index: 4;
    margin-top: -3rem;
}

.gl-platform-search .gl-mega__strip {
    border: 1px solid var(--gl-line);
    border-radius: var(--r);
    box-shadow: 0 22px 55px -35px rgba(6, 16, 32, 0.55);
}

.gl-platform-section {
    padding-block: clamp(4rem, 8vw, 6.5rem);
}

.gl-platform-layers {
    background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--gl-surface-2) 66%, transparent), transparent);
}

.gl-platform-section__head {
    display: grid;
    justify-items: center;
    gap: 0.8rem;
    text-align: center;
}

.gl-platform-section__head h2,
.gl-platform-demo h2,
.gl-platform-closing h2 {
    font-size: clamp(1.75rem, 1.25rem + 1.6vw, 2.5rem);
    font-weight: 680;
    letter-spacing: -0.04em;
    line-height: 1.12;
}

.gl-platform-section__head > p:last-child {
    max-width: 54rem;
    color: var(--gl-ink-2);
}

.gl-platform-layer-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 2.5rem;
}

.gl-platform-layer-card {
    display: grid;
    grid-template-rows: auto auto auto auto 1fr auto;
    align-content: start;
    gap: 0.9rem;
    min-height: 30rem;
    padding: clamp(1.4rem, 2.4vw, 2rem);
    border: 1px solid var(--gl-line);
    border-radius: var(--r-sm);
    background: var(--gl-surface);
    box-shadow: var(--sh-1);
    transition: border-color 0.25s var(--ease-calm), box-shadow 0.35s var(--ease), transform 0.35s var(--ease);
}

.gl-platform-layer-card:hover {
    border-color: var(--gl-line-2);
    box-shadow: var(--sh-2);
    transform: translateY(-4px);
}

.gl-platform-layer-card__icon,
.gl-platform-process__icon {
    display: grid;
    place-items: center;
    width: 4.5rem;
    height: 4.5rem;
    margin-bottom: 0.55rem;
    border-radius: 50%;
    background: var(--gl-accent-soft);
    color: var(--gl-accent-deep);
}

.gl-platform-layer-card__icon .gl-icon,
.gl-platform-process__icon .gl-icon {
    width: 2.25rem;
    height: 2.25rem;
}

.gl-platform-layer-card__number {
    color: var(--gl-gold-deep);
    font-size: 0.8rem;
    font-weight: 750;
}

.gl-platform-layer-card h3,
.gl-platform-process h3 {
    font-size: 1.125rem;
    font-weight: 680;
    letter-spacing: -0.025em;
}

.gl-platform-layer-card > p,
.gl-platform-process li > p,
.gl-platform-demo__copy > p,
.gl-platform-closing__banner p {
    color: var(--gl-ink-2);
    font-size: 0.875rem;
    line-height: 1.65;
}

.gl-platform-layer-card ul {
    display: grid;
    gap: 0.55rem;
    margin-top: 0.3rem;
}

.gl-platform-layer-card li {
    display: grid;
    grid-template-columns: 1rem minmax(0, 1fr);
    gap: 0.45rem;
    align-items: start;
    color: var(--gl-ink-2);
    font-size: 0.77rem;
    line-height: 1.4;
}

.gl-platform-layer-card li > span {
    display: grid;
    place-items: center;
    width: 0.85rem;
    height: 0.85rem;
    margin-top: 0.1rem;
    border: 1px solid var(--gl-accent-2);
    border-radius: 50%;
    color: var(--gl-accent);
}

.gl-platform-layer-card li .gl-icon {
    width: 0.6rem;
    height: 0.6rem;
}

.gl-platform-layer-card > a {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    width: fit-content;
    color: var(--gl-accent-deep);
    font-size: 0.8rem;
    font-weight: 700;
    text-decoration: none;
}

.gl-platform-layer-card > a:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

.gl-platform-layer-card > a .gl-icon {
    width: 0.9rem;
    height: 0.9rem;
}

.gl-platform-process {
    padding: clamp(2rem, 5vw, 4rem);
    border: 1px solid var(--gl-line);
    border-radius: var(--r);
    background: var(--gl-surface-2);
}

.gl-platform-process__steps {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
    margin-top: 2.5rem;
}

.gl-platform-process__steps::before {
    content: "";
    position: absolute;
    top: 2rem;
    left: 11%;
    right: 11%;
    border-top: 2px dotted var(--gl-accent-2);
}

.gl-platform-process__steps li {
    position: relative;
    z-index: 1;
    display: grid;
    justify-items: center;
    align-content: start;
    gap: 0.75rem;
    text-align: center;
}

.gl-platform-process__number {
    display: grid;
    place-items: center;
    width: 4rem;
    height: 4rem;
    border: 1px solid var(--gl-line);
    border-radius: var(--r-sm);
    background: var(--gl-surface);
    color: var(--gl-gold-deep);
    box-shadow: var(--sh-1);
    font-size: 1.25rem;
    font-weight: 700;
}

.gl-platform-process__icon {
    width: 3.75rem;
    height: 3.75rem;
    margin-top: 0.15rem;
    margin-bottom: 0;
    border: 1px solid var(--gl-line);
    background: var(--gl-surface);
}

.gl-platform-process__icon .gl-icon {
    width: 1.9rem;
    height: 1.9rem;
}

.gl-platform-process li > p {
    max-width: 24ch;
    font-size: 0.8rem;
}

.gl-platform-demo {
    display: grid;
    grid-template-columns: minmax(15rem, 0.72fr) minmax(0, 1.45fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
    padding-block: clamp(2rem, 4vw, 3.5rem);
    border: 1px solid var(--gl-line);
    border-radius: var(--r);
    background: var(--gl-surface);
    box-shadow: var(--sh-1);
}

.gl-platform-demo__copy {
    display: grid;
    justify-items: start;
    gap: 1.1rem;
    padding-left: clamp(0rem, 2vw, 1rem);
}

.gl-platform-demo__visual {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 22rem;
    overflow: hidden;
    border-radius: var(--r-sm);
    background:
        radial-gradient(circle at 50% 50%, rgba(28, 77, 143, 0.5), transparent 50%),
        linear-gradient(145deg, #102a4b, #061326);
    color: #fff;
}

.gl-platform-demo__visual > .gl-mega__art {
    position: absolute;
    inset: 1rem;
    opacity: 0.85;
}

.gl-platform-demo__visual > .gl-mega__art svg {
    height: 100%;
    color: #6ea8ec;
}

.gl-platform-demo__play {
    position: relative;
    z-index: 2;
    display: grid;
    place-items: center;
    width: 5.25rem;
    height: 5.25rem;
    border-radius: 50%;
    background: #fff;
    color: var(--gl-navy);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25);
}

.gl-platform-demo__play .gl-icon {
    width: 2.25rem;
    height: 2.25rem;
}

.gl-platform-demo__visual figcaption {
    position: absolute;
    z-index: 2;
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.25);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
    text-align: center;
}

.gl-platform-closing {
    padding-top: clamp(3rem, 7vw, 5.5rem);
}

.gl-platform-closing__banner {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(20rem, 1.1fr);
    gap: 2rem;
    align-items: center;
    min-height: 18rem;
    overflow: hidden;
    padding: clamp(2rem, 5vw, 3.5rem);
    border-radius: var(--r);
    background:
        radial-gradient(circle at 80% 10%, rgba(28, 77, 143, 0.5), transparent 35rem),
        linear-gradient(135deg, #0f2b50, #061326);
    color: #fff;
}

.gl-platform-closing__banner > div:first-child {
    position: relative;
    z-index: 2;
    display: grid;
    justify-items: start;
    gap: 1rem;
}

.gl-platform-closing__banner p {
    max-width: 40ch;
    color: rgba(255, 255, 255, 0.76);
}

.gl-platform-text-link--gold {
    color: var(--gl-gold-2);
}

.gl-platform-closing__art {
    margin: -3rem -5rem -3rem 0;
    color: #6ea8ec;
}

.gl-platform-closing__art .gl-mega__art--network svg {
    color: #6ea8ec;
    opacity: 0.66;
}

.gl-platform-proof {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 1.5rem;
}

.gl-platform-proof li {
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 1fr);
    gap: 0.8rem;
    padding: 0.75rem 1.25rem;
}

.gl-platform-proof li + li {
    border-left: 1px solid var(--gl-line);
}

.gl-platform-proof__icon {
    color: var(--gl-gold-deep);
}

.gl-platform-proof__icon .gl-icon {
    width: 2rem;
    height: 2rem;
}

.gl-platform-proof strong,
.gl-platform-proof small {
    display: block;
}

.gl-platform-proof strong {
    font-size: 0.8rem;
}

.gl-platform-proof small {
    margin-top: 0.2rem;
    color: var(--gl-ink-3);
    font-size: 0.7rem;
    line-height: 1.45;
}

@media (max-width: 68rem) {
    .gl-platform-hero__layout {
        grid-template-columns: 1fr;
    }

    .gl-platform-rail {
        overflow-x: auto;
        padding: 1rem 0;
        border-right: 0;
        border-bottom: 1px solid var(--gl-line);
        scrollbar-width: thin;
    }

    .gl-platform-rail ul {
        display: flex;
        width: max-content;
        min-width: 100%;
    }

    .gl-platform-rail li {
        min-width: 14rem;
    }

    .gl-platform-rail__link {
        height: 100%;
        margin-left: 0;
        border-bottom: 2px solid transparent;
        border-left: 0;
        border-radius: var(--r-sm);
    }

    .gl-platform-rail__link.is-current {
        border-bottom-color: var(--gl-gold);
    }

    .gl-platform-hero__content {
        padding-left: 0;
    }

    .gl-platform-layer-grid,
    .gl-platform-proof {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .gl-platform-layer-card {
        min-height: 0;
    }

    .gl-platform-proof li:nth-child(3) {
        border-left: 0;
    }
}

@media (max-width: 50rem) {
    .gl-platform-hero__content,
    .gl-platform-demo,
    .gl-platform-closing__banner {
        grid-template-columns: 1fr;
    }

    .gl-platform-hero__content {
        padding-top: 3rem;
    }

    .gl-platform-network {
        min-height: 19rem;
    }

    .gl-platform-process__steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        row-gap: 2.5rem;
    }

    .gl-platform-process__steps::before {
        display: none;
    }

    .gl-platform-demo {
        margin-inline: 1.25rem;
        padding-inline: clamp(1.25rem, 4vw, 2.5rem);
    }

    .gl-platform-demo__copy {
        padding-left: 0;
    }

    .gl-platform-demo__visual {
        min-height: 18rem;
    }

    .gl-platform-closing__art {
        max-height: 11rem;
        margin: -1rem -4rem -5rem 18%;
    }
}

@media (max-width: 40rem) {
    .gl-platform-hero__copy h1 {
        font-size: clamp(2rem, 9vw, 2.75rem);
    }

    .gl-platform-search {
        margin-top: -2rem;
    }

    .gl-platform-search .gl-mega__strip {
        padding: 1rem;
    }

    .gl-platform-search .gl-mega__figures {
        width: 100%;
    }

    .gl-platform-layer-grid,
    .gl-platform-process__steps,
    .gl-platform-proof {
        grid-template-columns: 1fr;
    }

    .gl-platform-layer-card {
        padding: 1.5rem;
    }

    .gl-platform-process {
        padding: 2rem 1.25rem;
    }

    .gl-platform-process__steps {
        gap: 2rem;
    }

    .gl-platform-process__steps li {
        grid-template-columns: 3.5rem minmax(0, 1fr);
        justify-items: start;
        text-align: left;
    }

    .gl-platform-process__number {
        grid-row: 1 / 4;
        width: 3.5rem;
        height: 3.5rem;
    }

    .gl-platform-process__icon {
        display: none;
    }

    .gl-platform-process li > p {
        max-width: none;
    }

    .gl-platform-proof li,
    .gl-platform-proof li + li,
    .gl-platform-proof li:nth-child(3) {
        border-top: 1px solid var(--gl-line);
        border-left: 0;
    }

    .gl-platform-proof li:first-child {
        border-top: 0;
    }
}

@media (max-width: 30rem) {
    .gl-platform-actions,
    .gl-platform-actions .gl-btn,
    .gl-platform-actions .gl-platform-text-link {
        width: 100%;
    }

    .gl-platform-actions .gl-platform-text-link {
        justify-content: center;
    }

    .gl-platform-network__node--relationship {
        left: 0;
    }

    .gl-platform-network__node--product {
        right: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .gl-platform-rail__link,
    .gl-platform-layer-card {
        transition: none;
    }

    .gl-platform-rail__link:hover,
    .gl-platform-layer-card:hover {
        transform: none;
    }
}