:root {
    --ab-bg: #0b1f2e;
    --ab-bg-deep: #06131d;

    --ab-surface: #10293b;
    --ab-surface-dark: #0c2233;
    --ab-surface-deep: #06131d;

    --ab-primary: #3a5f7d;
    --ab-primary-soft: #6f9fc4;

    --ab-gold: #f2b705;
    --ab-gold-hover: #ffca1a;

    --ab-material: #7d583a;
    --ab-green: #23c378;
    --ab-red: #d85c4a;

    --ab-text: #f7f2e8;
    --ab-text-soft: rgba(247,242,232,.76);
    --ab-muted: rgba(247,242,232,.58);
    --ab-muted-soft: rgba(247,242,232,.42);

    --ab-border: rgba(247,242,232,.12);
    --ab-border-strong: rgba(247,242,232,.18);
    --ab-border-gold: rgba(242,183,5,.26);

    --ab-radius-lg: 18px;
    --ab-radius-md: 12px;
    --ab-radius-sm: 10px;

    --ab-shadow: 0 18px 46px rgba(0,0,0,.28);

    --ab-container: 1180px;

    --ab-font:
        "Aptos",
        "Segoe UI",
        Roboto,
        Arial,
        sans-serif;

    --ab-title-font:
        "Aptos Display",
        "Segoe UI Variable Display",
        "Segoe UI",
        Roboto,
        Arial,
        sans-serif;
}

/* =========================================================
BASE
========================================================= */

html,
body.ab-os-runtime {
    margin: 0;
    min-height: 100%;
    background: var(--ab-bg) !important;
}

body.ab-os-runtime {
    color: var(--ab-text);
    font-family: var(--ab-font);
    font-size: 16px;
    line-height: 1.6;
    font-weight: 400;
    letter-spacing: 0;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

.ab-app-shell,
.ab-app-shell * {
    box-sizing: border-box;
}

.ab-app-shell {
    min-height: 100vh;
    background: linear-gradient(180deg, var(--ab-bg), var(--ab-bg-deep));
}

/* =========================================================
TOPBAR
========================================================= */

.ab-app-topbar {
    position: sticky;
    top: 0;
    z-index: 50;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;

    padding: 14px 24px;

    background: rgba(6,19,29,.94);
    border-bottom: 1px solid var(--ab-border);
}

.ab-app-brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;

    color: var(--ab-text);
    text-decoration: none;
}

.ab-app-brand__mark {
    display: grid;
    place-items: center;

    width: 38px;
    height: 38px;

    border-radius: var(--ab-radius-md);

    background: linear-gradient(135deg, var(--ab-primary), #28485f);
    color: var(--ab-text);

    font-weight: 800;
}

.ab-app-brand__text {
    font-family: var(--ab-title-font);
    font-size: 16px;
    font-weight: 780;
    letter-spacing: -.02em;
}

.ab-app-topnav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.ab-app-topnav a,
.ab-app-sidebar a,
.ab-app-bottomnav a {
    color: var(--ab-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
}

.ab-app-topnav a {
    padding: 9px 11px;
    border-radius: 999px;
}

.ab-app-topnav a:hover,
.ab-app-sidebar a:hover,
.ab-app-bottomnav a:hover {
    background: rgba(242,183,5,.08);
    color: var(--ab-text);
}

/* =========================================================
LAYOUT
========================================================= */

.ab-app-layout {
    display: grid;
    grid-template-columns: 188px minmax(0, 1fr);
    gap: 18px;

    width: min(var(--ab-container), calc(100vw - 40px));
    margin: 0 auto;
    padding: 22px 0 72px;
}

.ab-app-sidebar {
    position: sticky;
    top: 78px;

    display: grid;
    gap: 5px;

    height: fit-content;
    padding: 10px;

    background: var(--ab-surface-dark);
    border: 1px solid var(--ab-border);
    border-radius: 16px;
}

.ab-app-sidebar a {
    display: flex;
    align-items: center;

    min-height: 36px;
    padding: 9px 10px;

    border-radius: var(--ab-radius-sm);
}

.ab-runtime-shell {
    min-width: 0;
}

/* =========================================================
MAIN PANEL
========================================================= */

.ab-system,
.ab-system * {
    box-sizing: border-box;
}

.ab-system {
    width: 100%;
    margin: 0;
    padding: 22px;

    background: var(--ab-surface);
    border: 1px solid var(--ab-border);
    border-radius: var(--ab-radius-lg);
    box-shadow: var(--ab-shadow);

    color: var(--ab-text);
}

.ab-system p {
    margin: 0;
    color: var(--ab-muted);
    font-size: 15px;
    line-height: 1.55;
}

.ab-system strong {
    color: var(--ab-text);
    font-weight: 700;
}

/* =========================================================
TYPOGRAPHY
========================================================= */

.ab-dashboard__hero,
.ab-marketplace-list__hero,
.ab-search-results__hero,
.ab-profile-form__hero,
.ab-messages__hero {
    margin-bottom: 18px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--ab-border);
}

.ab-dashboard__eyebrow,
.ab-marketplace-list__eyebrow,
.ab-search-results__eyebrow,
.ab-profile-form__eyebrow,
.ab-messages__eyebrow {
    display: inline-flex;
    width: fit-content;

    margin-bottom: 10px;
    padding: 6px 10px;

    border: 1px solid var(--ab-border-gold);
    border-radius: 999px;

    background: rgba(242,183,5,.08);
    color: var(--ab-gold);

    font-size: 11px;
    font-weight: 700;
    letter-spacing: .045em;
    text-transform: uppercase;
}

.ab-dashboard__title,
.ab-marketplace-list__title,
.ab-search-results__title,
.ab-profile-form__title,
.ab-messages__title {
    max-width: 680px;
    margin: 0 0 12px;

    color: var(--ab-text);

    font-family: var(--ab-title-font);
    font-size: clamp(30px, 3vw, 42px);
    line-height: 1.08;
    font-weight: 760;
    letter-spacing: -.025em;
}

.ab-dashboard__text,
.ab-marketplace-list__text,
.ab-search-results__text,
.ab-profile-form__text,
.ab-messages__text {
    max-width: 680px;
    color: var(--ab-text-soft);
    font-size: 15px;
    line-height: 1.55;
}

/* =========================================================
FORMS
========================================================= */

.ab-system input,
.ab-system select,
.ab-system textarea {
    width: 100%;
    min-height: 46px;

    padding: 0 14px;

    border: 1px solid rgba(247,242,232,.14);
    border-radius: var(--ab-radius-sm);

    background: var(--ab-surface-deep);
    color: var(--ab-text);

    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 15px;
    font-weight: 400;
    line-height: 1.45;

    outline: none;
}

.ab-system textarea {
    min-height: 120px;
    padding-top: 13px;
    resize: vertical;
}

.ab-system input::placeholder,
.ab-system textarea::placeholder {
    color: var(--ab-muted-soft);
}

.ab-system input:focus,
.ab-system select:focus,
.ab-system textarea:focus {
    border-color: rgba(242,183,5,.48);
    box-shadow: 0 0 0 3px rgba(242,183,5,.10);
}

.ab-system select {
    appearance: none;
    background-image:
        linear-gradient(45deg, transparent 50%, var(--ab-gold) 50%),
        linear-gradient(135deg, var(--ab-gold) 50%, transparent 50%);
    background-position:
        calc(100% - 18px) 20px,
        calc(100% - 12px) 20px;
    background-size: 6px 6px;
    background-repeat: no-repeat;
}

.ab-system label {
    display: block;
    margin-bottom: 6px;

    color: var(--ab-text-soft);

    font-size: 13px;
    font-weight: 600;
}

/* =========================================================
BUTTONS
========================================================= */

.ab-system button,
.ab-system .button,
.ab-system input[type="submit"],
.ab-marketplace-list__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 46px;
    padding: 0 18px;

    border: 0;
    border-radius: var(--ab-radius-sm);

    background: var(--ab-gold);
    color: #101820;

    font-family: var(--ab-font);
    font-size: 14px;
    font-weight: 760;
    text-decoration: none;

    cursor: pointer;
    box-shadow: none;
}

.ab-system button:hover,
.ab-system .button:hover,
.ab-system input[type="submit"]:hover,
.ab-marketplace-list__button:hover {
    background: var(--ab-gold-hover);
    color: #101820;
    transform: none;
    box-shadow: none;
}

.ab-system .button-secondary,
.ab-button--secondary {
    background: var(--ab-surface-dark);
    color: var(--ab-text);
    border: 1px solid var(--ab-border);
}

/* =========================================================
MARKETPLACE FILTERS
========================================================= */

.ab-marketplace-list__filters {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;

    margin: 0 0 18px;
    padding: 14px;

    background: var(--ab-surface-dark);
    border: 1px solid var(--ab-border);
    border-radius: 16px;
}

.ab-marketplace-list__filter {
    padding: 0;
    background: transparent;
    border: 0;
}

.ab-marketplace-list__filter span {
    display: block;

    margin-bottom: 6px;

    color: var(--ab-muted);
    font-size: 11px;
    font-weight: 650;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.ab-marketplace-list__filter strong {
    display: block;

    min-height: 42px;
    padding: 11px 12px;

    border-radius: var(--ab-radius-sm);

    background: var(--ab-surface-deep);
    border: 1px solid var(--ab-border);

    color: var(--ab-text);
    font-size: 14px;
    font-weight: 500;
}

/* =========================================================
CARDS / GRIDS
========================================================= */

.ab-dashboard__grid,
.ab-marketplace-list__grid,
.ab-profile-form__grid,
.ab-messages__grid {
    display: grid;
    gap: 14px;
}

.ab-dashboard__grid,
.ab-marketplace-list__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ab-profile-form__grid,
.ab-messages__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ab-dashboard__actions,
.ab-search-results__shortcuts,
.ab-profile-form__steps {
    display: grid;
    gap: 14px;
}

.ab-dashboard__actions,
.ab-search-results__shortcuts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.ab-profile-form__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ab-dashboard__card,
.ab-dashboard__action,
.ab-profile-form__card,
.ab-profile-form__steps > div,
.ab-messages__card,
.ab-messages__empty,
.ab-search-results__shortcuts a,
.ab-search-results__empty,
.ab-marketplace-list__empty {
    padding: 18px;

    background: var(--ab-surface-dark);
    border: 1px solid var(--ab-border);
    border-radius: 16px;
    box-shadow: none;
}

.ab-dashboard__card-kicker,
.ab-profile-form__card span,
.ab-messages__card span {
    display: block;

    margin-bottom: 8px;

    color: var(--ab-gold);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .045em;
    text-transform: uppercase;
}

.ab-dashboard__card-value,
.ab-profile-form__card strong,
.ab-profile-form__steps strong,
.ab-messages__card strong {
    display: block;

    margin-bottom: 8px;

    color: var(--ab-text);
    font-size: 22px;
    line-height: 1.1;
    font-weight: 760;
    letter-spacing: -.02em;
}

.ab-dashboard__card p,
.ab-dashboard__action small,
.ab-search-results__shortcuts small {
    color: var(--ab-muted);
    font-size: 13px;
    line-height: 1.45;
}

.ab-dashboard__action {
    min-height: 96px;
    text-decoration: none;
}

.ab-dashboard__action span,
.ab-search-results__shortcuts span {
    color: var(--ab-text);
    font-size: 15px;
    font-weight: 700;
}

/* =========================================================
SEARCH
========================================================= */

.ab-search-results__form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;

    margin: 0 0 18px;
    padding: 10px;

    background: var(--ab-surface-dark);
    border: 1px solid var(--ab-border);
    border-radius: 16px;
}

.ab-search-results__form input {
    min-height: 46px;
    border: 0;
    background: var(--ab-surface-deep);
}

.ab-search-results__form button {
    min-height: 46px;
}

/* =========================================================
EMPTY STATES
========================================================= */

.ab-marketplace-list__empty,
.ab-search-results__empty,
.ab-messages__empty {
    grid-column: 1 / -1;

    border-color: rgba(242,183,5,.22);
    background: var(--ab-surface-dark);
}

.ab-marketplace-list__empty-icon {
    display: grid;
    place-items: center;

    width: 44px;
    height: 44px;

    border-radius: 12px;

    background: var(--ab-material);
    color: var(--ab-text);

    font-size: 22px;
    font-weight: 760;
}

.ab-marketplace-list__empty h2,
.ab-search-results__empty h2,
.ab-messages__empty h2 {
    margin: 0 0 8px;

    color: var(--ab-text);

    font-size: 22px;
    font-weight: 760;
    letter-spacing: -.02em;
}

/* =========================================================
STATUS
========================================================= */

.ab-status--success,
.ab-badge--verified {
    background: rgba(35,195,120,.10);
    border-color: rgba(35,195,120,.24);
    color: #7ee6b2;
}

.ab-status--warning,
.ab-badge--premium {
    background: rgba(242,183,5,.10);
    border-color: rgba(242,183,5,.28);
    color: var(--ab-gold);
}

.ab-status--danger {
    background: rgba(216,92,74,.10);
    border-color: rgba(216,92,74,.24);
    color: #f2a096;
}

/* =========================================================
HIDE DEV PLACEHOLDERS
========================================================= */

.ab-placeholder,
.runtime-placeholder,
.debug-placeholder {
    display: none !important;
}

/* =========================================================
BOTTOM NAV
========================================================= */

.ab-app-bottomnav {
    display: none;
}

/* =========================================================
RESPONSIVE
========================================================= */

@media (max-width: 1200px) {
    .ab-app-layout {
        grid-template-columns: 180px minmax(0, 1fr);
        width: min(100%, calc(100vw - 32px));
    }

    .ab-dashboard__actions,
    .ab-search-results__shortcuts {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 980px) {
    .ab-app-topnav,
    .ab-app-sidebar {
        display: none;
    }

    .ab-app-layout {
        display: block;
        width: 100%;
        padding: 12px 10px 92px;
    }

    .ab-app-topbar {
        padding: 13px 14px;
    }

    .ab-app-brand__text {
        font-size: 15px;
    }

    .ab-system {
        padding: 18px;
    }

    .ab-dashboard__title,
    .ab-marketplace-list__title,
    .ab-search-results__title,
    .ab-profile-form__title,
    .ab-messages__title {
        font-size: clamp(30px, 9vw, 44px);
        line-height: 1.08;
        letter-spacing: -.025em;
    }

    .ab-dashboard__grid,
    .ab-marketplace-list__grid,
    .ab-profile-form__grid,
    .ab-messages__grid,
    .ab-dashboard__actions,
    .ab-search-results__shortcuts,
    .ab-profile-form__steps,
    .ab-marketplace-list__filters,
    .ab-search-results__form {
        grid-template-columns: 1fr;
    }

    .ab-app-bottomnav {
        position: fixed;

        left: 10px;
        right: 10px;
        bottom: 10px;

        z-index: 80;

        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;

        padding: 8px;

        background: rgba(6,19,29,.94);
        border: 1px solid var(--ab-border);
        border-radius: 18px;
    }

    .ab-app-bottomnav a {
        display: flex;
        align-items: center;
        justify-content: center;

        min-height: 40px;
        padding: 8px 6px;

        border-radius: 12px;

        font-size: 12px;
        text-align: center;
    }
}

@media (max-width: 420px) {
    .ab-system {
        padding: 16px;
    }

    .ab-dashboard__card,
    .ab-dashboard__action,
    .ab-profile-form__card,
    .ab-profile-form__steps > div,
    .ab-messages__card,
    .ab-messages__empty,
    .ab-search-results__shortcuts a,
    .ab-search-results__empty,
    .ab-marketplace-list__empty {
        padding: 16px;
    }
}

.ab-marketplace-os {
    padding: 18px;
}

.ab-marketplace-os__top {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 16px;
    align-items: center;
    margin-bottom: 16px;
}

.ab-marketplace-os__eyebrow {
    display: inline-flex;
    margin-bottom: 8px;
    padding: 5px 10px;
    border-radius: 999px;
    background: rgba(242,183,5,.1);
    color: #f2b705;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.ab-marketplace-os__title {
    max-width: 680px;
    margin: 0;
    color: #f7f2e8;
    font-size: clamp(30px, 3vw, 42px);
    line-height: 1.08;
    font-weight: 760;
    letter-spacing: -.025em;
}

.ab-marketplace-os__post,
.ab-marketplace-os__search button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 16px;
    border: 0;
    border-radius: 10px;
    background: #f2b705;
    color: #101820;
    font-size: 14px;
    font-weight: 760;
    text-decoration: none;
}

.ab-marketplace-os__search {
    display: grid;
    grid-template-columns: minmax(260px, 1.6fr) minmax(160px, .7fr) minmax(160px, .7fr) auto;
    gap: 10px;
    margin-bottom: 12px;
    padding: 12px;
    background: #0c2233;
    border: 1px solid rgba(247,242,232,.12);
    border-radius: 16px;
}

.ab-marketplace-os__field label {
    display: block;
    margin-bottom: 5px;
    color: rgba(247,242,232,.58);
    font-size: 11px;
    font-weight: 650;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.ab-marketplace-os__search input,
.ab-marketplace-os__search select {
    width: 100%;
    min-height: 44px;
    padding: 0 13px;
    border: 1px solid rgba(247,242,232,.14);
    border-radius: 10px;
    background: #06131d;
    color: #f7f2e8;
    font-size: 15px;
}

.ab-marketplace-os__pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.ab-marketplace-os__pills a {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border: 1px solid rgba(247,242,232,.12);
    border-radius: 999px;
    background: #0c2233;
    color: rgba(247,242,232,.72);
    font-size: 13px;
    font-weight: 650;
    text-decoration: none;
}

.ab-marketplace-os__pills a.is-active {
    border-color: rgba(242,183,5,.35);
    background: rgba(242,183,5,.10);
    color: #f2b705;
}

.ab-marketplace-os__toolbar {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: center;
    margin-bottom: 14px;
    padding: 12px 14px;
    border-radius: 14px;
    background: #10293b;
    border: 1px solid rgba(247,242,232,.12);
}

.ab-marketplace-os__toolbar strong {
    display: block;
    color: #f7f2e8;
    font-size: 15px;
}

.ab-marketplace-os__toolbar span {
    color: rgba(247,242,232,.58);
    font-size: 13px;
}

.ab-marketplace-os__trust {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ab-marketplace-os__trust span {
    padding: 6px 9px;
    border-radius: 999px;
    background: rgba(35,195,120,.1);
    color: #7ee6b2;
    font-weight: 650;
}

.ab-marketplace-os__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.ab-marketplace-card,
.ab-marketplace-os__empty {
    padding: 16px;
    border-radius: 16px;
    background: #0c2233;
    border: 1px solid rgba(247,242,232,.12);
}

.ab-marketplace-card__head,
.ab-marketplace-card__foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.ab-marketplace-card__badge {
    padding: 5px 8px;
    border-radius: 999px;
    background: rgba(35,195,120,.1);
    color: #7ee6b2;
    font-size: 12px;
    font-weight: 700;
}

.ab-marketplace-card__meta,
.ab-marketplace-card__foot span {
    color: rgba(247,242,232,.58);
    font-size: 12px;
}

.ab-marketplace-card__title {
    margin: 14px 0 8px;
    font-size: 20px;
    line-height: 1.2;
}

.ab-marketplace-card__title a {
    color: #f7f2e8;
    text-decoration: none;
}

.ab-marketplace-card__desc {
    min-height: 42px;
    margin-bottom: 14px;
    color: rgba(247,242,232,.68);
    font-size: 14px;
}

.ab-marketplace-card__foot a {
    color: #f2b705;
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
}

.ab-marketplace-os__empty {
    display: grid;
    gap: 16px;
    border-color: rgba(242,183,5,.22);
}

.ab-marketplace-os__empty-main {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.ab-marketplace-os__empty-icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
    border-radius: 12px;
    background: #7d583a;
    color: #f7f2e8;
    font-size: 22px;
    font-weight: 760;
}

.ab-marketplace-os__empty h2 {
    margin: 0 0 6px;
    color: #f7f2e8;
    font-size: 22px;
    line-height: 1.2;
}

.ab-marketplace-os__empty p {
    max-width: 620px;
    color: rgba(247,242,232,.68);
}

.ab-marketplace-os__empty-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.ab-marketplace-os__empty-actions span {
    color: rgba(247,242,232,.58);
    font-size: 13px;
}

@media (max-width: 1100px) {
    .ab-marketplace-os__search,
    .ab-marketplace-os__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .ab-marketplace-os__search-main {
        grid-column: 1 / -1;
    }
}

@media (max-width: 760px) {
    .ab-marketplace-os__top,
    .ab-marketplace-os__search,
    .ab-marketplace-os__grid {
        grid-template-columns: 1fr;
    }

    .ab-marketplace-os__toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .ab-marketplace-os__post,
    .ab-marketplace-os__search button {
        width: 100%;
    }
}