/*
 * Nexa UI Design System Core V1
 * Foundation only: tokens + reusable opt-in components.
 * No business logic, layout routing, payment, order, or database behavior.
 */

:root {
    /* Brand */
    --nexa-ds-primary: rgb(var(--primary-color, 168, 30, 235));
    --nexa-ds-primary-rgb: var(--primary-color, 168, 30, 235);
    --nexa-ds-primary-strong: #b31ff4;
    --nexa-ds-primary-alt: #7c4dff;
    --nexa-ds-primary-soft: rgb(var(--nexa-ds-primary-rgb), .14);
    --nexa-ds-primary-softer: rgb(var(--nexa-ds-primary-rgb), .075);

    /* Dark Nexa surfaces - aligned with the current public UI */
    --nexa-ds-bg: #171a2b;
    --nexa-ds-bg-deep: #111426;
    --nexa-ds-surface: #22263a;
    --nexa-ds-surface-2: #292e45;
    --nexa-ds-surface-3: #313750;
    --nexa-ds-surface-glass: rgba(34, 38, 58, .82);
    --nexa-ds-border: rgba(255, 255, 255, .085);
    --nexa-ds-border-strong: rgba(255, 255, 255, .14);
    --nexa-ds-divider: rgba(255, 255, 255, .065);

    /* Type */
    --nexa-ds-text: rgba(255, 255, 255, .94);
    --nexa-ds-text-soft: rgba(255, 255, 255, .78);
    --nexa-ds-muted: rgba(255, 255, 255, .60);
    --nexa-ds-subtle: rgba(255, 255, 255, .42);
    --nexa-ds-font-public: "Urbanist", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --nexa-ds-font-admin: Inter, "Urbanist", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* Semantic */
    --nexa-ds-success: #26c98a;
    --nexa-ds-warning: #f6b94b;
    --nexa-ds-danger: #ff5c72;
    --nexa-ds-info: #55b8ff;

    /* Shape */
    --nexa-ds-radius-xs: 8px;
    --nexa-ds-radius-sm: 10px;
    --nexa-ds-radius-md: 14px;
    --nexa-ds-radius-lg: 20px;
    --nexa-ds-radius-xl: 26px;
    --nexa-ds-radius-pill: 999px;

    /* Space */
    --nexa-ds-space-1: 4px;
    --nexa-ds-space-2: 8px;
    --nexa-ds-space-3: 12px;
    --nexa-ds-space-4: 16px;
    --nexa-ds-space-5: 20px;
    --nexa-ds-space-6: 24px;
    --nexa-ds-space-8: 32px;
    --nexa-ds-space-10: 40px;
    --nexa-ds-space-12: 48px;

    /* Depth / motion */
    --nexa-ds-shadow-sm: 0 10px 28px rgba(0, 0, 0, .12);
    --nexa-ds-shadow-md: 0 18px 46px rgba(0, 0, 0, .18);
    --nexa-ds-shadow-lg: 0 26px 80px rgba(0, 0, 0, .26);
    --nexa-ds-focus: 0 0 0 4px rgb(var(--nexa-ds-primary-rgb), .14);
    --nexa-ds-ease: cubic-bezier(.2, .8, .2, 1);
    --nexa-ds-transition-fast: 150ms var(--nexa-ds-ease);
    --nexa-ds-transition: 190ms var(--nexa-ds-ease);

    /* Bootstrap/legacy-compatible aliases. Values intentionally mirror the new UI. */
    --nexa-page: var(--nexa-ds-bg);
    --nexa-surface: var(--nexa-ds-surface);
    --nexa-surface-2: var(--nexa-ds-surface-2);
    --nexa-surface-3: var(--nexa-ds-surface-3);
    --nexa-border: var(--nexa-ds-border);
    --nexa-border-strong: var(--nexa-ds-border-strong);
    --nexa-text: var(--nexa-ds-text);
    --nexa-muted: var(--nexa-ds-muted);
    --nexa-accent: var(--nexa-ds-primary);
    --nexa-accent-soft: var(--nexa-ds-primary-soft);
    --nexa-radius-sm: var(--nexa-ds-radius-sm);
    --nexa-radius-md: var(--nexa-ds-radius-md);
    --nexa-radius-lg: var(--nexa-ds-radius-lg);
    --nexa-radius-xl: var(--nexa-ds-radius-xl);
    --nexa-shadow-sm: var(--nexa-ds-shadow-sm);
    --nexa-shadow-lg: var(--nexa-ds-shadow-lg);
    --nexa-transition: var(--nexa-ds-transition);
}

/* Context only. The core does not force existing page layouts to change. */
body.nexa-ds-core-v1 {
    --nexa-ds-current-font: var(--nexa-ds-font-public);
    font-family: var(--nexa-ds-current-font);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body.nexa-ds-core-v1.nexa-admin-ds,
body.nexa-ds-core-v1.has-navbar-vertical-aside {
    --nexa-ds-current-font: var(--nexa-ds-font-admin);
}

body.nexa-ds-core-v1 ::selection {
    color: #fff;
    background: var(--nexa-ds-primary);
}

body.nexa-ds-core-v1 :where(a, button, input, select, textarea, [tabindex]):focus-visible {
    outline: 2px solid rgb(var(--nexa-ds-primary-rgb), .72);
    outline-offset: 3px;
}

/* Layout primitives */
.nexa-ds-container {
    width: min(100% - 32px, 1280px);
    margin-inline: auto;
}

.nexa-ds-stack {
    display: flex;
    flex-direction: column;
    gap: var(--nexa-ds-stack-gap, var(--nexa-ds-space-5));
}

.nexa-ds-cluster {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--nexa-ds-cluster-gap, var(--nexa-ds-space-3));
}

.nexa-ds-grid {
    display: grid;
    grid-template-columns: repeat(var(--nexa-ds-grid-columns, 3), minmax(0, 1fr));
    gap: var(--nexa-ds-grid-gap, var(--nexa-ds-space-5));
}

/* Surfaces */
.nexa-ds-card,
.nexa-ds-panel {
    position: relative;
    border: 1px solid var(--nexa-ds-border);
    border-radius: var(--nexa-ds-radius-lg);
    color: var(--nexa-ds-text-soft);
    background: var(--nexa-ds-surface);
    box-shadow: var(--nexa-ds-shadow-sm);
}

.nexa-ds-card {
    padding: var(--nexa-ds-card-padding, var(--nexa-ds-space-6));
}

.nexa-ds-panel {
    overflow: hidden;
}

.nexa-ds-card--compact { --nexa-ds-card-padding: var(--nexa-ds-space-4); }
.nexa-ds-card--spacious { --nexa-ds-card-padding: var(--nexa-ds-space-8); }
.nexa-ds-card--flat { box-shadow: none; }
.nexa-ds-card--glass {
    background: var(--nexa-ds-surface-glass);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}
.nexa-ds-card--interactive {
    transition: transform var(--nexa-ds-transition), border-color var(--nexa-ds-transition), box-shadow var(--nexa-ds-transition);
}
.nexa-ds-card--interactive:hover {
    transform: translateY(-2px);
    border-color: rgb(var(--nexa-ds-primary-rgb), .28);
    box-shadow: var(--nexa-ds-shadow-md);
}

.nexa-ds-panel__header,
.nexa-ds-panel__body,
.nexa-ds-panel__footer {
    padding: var(--nexa-ds-space-5) var(--nexa-ds-space-6);
}
.nexa-ds-panel__header,
.nexa-ds-panel__footer {
    border-color: var(--nexa-ds-divider);
    background: rgba(255, 255, 255, .012);
}
.nexa-ds-panel__header { border-bottom: 1px solid var(--nexa-ds-divider); }
.nexa-ds-panel__footer { border-top: 1px solid var(--nexa-ds-divider); }

/* Page heading */
.nexa-ds-page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--nexa-ds-space-5);
    margin-bottom: var(--nexa-ds-space-6);
}
.nexa-ds-page-header__content { min-width: 0; }
.nexa-ds-eyebrow {
    margin: 0 0 7px;
    color: var(--nexa-ds-primary);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .14em;
    text-transform: uppercase;
}
.nexa-ds-title {
    margin: 0;
    color: var(--nexa-ds-text);
    font-size: clamp(28px, 3vw, 46px);
    font-weight: 800;
    letter-spacing: -.035em;
    line-height: 1.05;
}
.nexa-ds-subtitle {
    max-width: 760px;
    margin: 10px 0 0;
    color: var(--nexa-ds-muted);
    font-size: 14px;
    line-height: 1.65;
}

/* Buttons */
.nexa-ds-btn {
    min-height: 44px;
    padding: 10px 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid transparent;
    border-radius: var(--nexa-ds-radius-md);
    color: #fff;
    background: linear-gradient(135deg, var(--nexa-ds-primary), var(--nexa-ds-primary-alt));
    box-shadow: 0 10px 26px rgb(var(--nexa-ds-primary-rgb), .18);
    font: 800 13px/1 var(--nexa-ds-current-font, var(--nexa-ds-font-public));
    text-decoration: none;
    cursor: pointer;
    transition: transform var(--nexa-ds-transition), box-shadow var(--nexa-ds-transition), border-color var(--nexa-ds-transition), background var(--nexa-ds-transition);
}
.nexa-ds-btn:hover {
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 15px 34px rgb(var(--nexa-ds-primary-rgb), .26);
}
.nexa-ds-btn:active { transform: translateY(0); }
.nexa-ds-btn:disabled,
.nexa-ds-btn[aria-disabled="true"] { opacity: .52; cursor: not-allowed; pointer-events: none; }
.nexa-ds-btn--secondary {
    border-color: var(--nexa-ds-border-strong);
    color: var(--nexa-ds-text);
    background: var(--nexa-ds-surface-2);
    box-shadow: none;
}
.nexa-ds-btn--ghost {
    border-color: var(--nexa-ds-border);
    color: var(--nexa-ds-text-soft);
    background: transparent;
    box-shadow: none;
}
.nexa-ds-btn--danger { background: var(--nexa-ds-danger); box-shadow: none; }
.nexa-ds-btn--sm { min-height: 36px; padding: 8px 12px; border-radius: var(--nexa-ds-radius-sm); font-size: 12px; }
.nexa-ds-btn--lg { min-height: 50px; padding: 13px 20px; font-size: 14px; }

/* Form controls */
.nexa-ds-field { display: grid; gap: 8px; }
.nexa-ds-label {
    margin: 0;
    color: var(--nexa-ds-text-soft);
    font-size: 12px;
    font-weight: 750;
}
.nexa-ds-help { color: var(--nexa-ds-muted); font-size: 12px; line-height: 1.5; }
.nexa-ds-error { color: var(--nexa-ds-danger); font-size: 12px; line-height: 1.45; }
.nexa-ds-input,
.nexa-ds-select,
.nexa-ds-textarea {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--nexa-ds-border);
    border-radius: var(--nexa-ds-radius-md);
    color: var(--nexa-ds-text);
    background: rgba(10, 12, 23, .30);
    box-shadow: none;
    font: 600 13px/1.3 var(--nexa-ds-current-font, var(--nexa-ds-font-public));
    transition: border-color var(--nexa-ds-transition), box-shadow var(--nexa-ds-transition), background var(--nexa-ds-transition);
}
.nexa-ds-input,
.nexa-ds-textarea { padding: 11px 14px; }
.nexa-ds-select { padding-inline: 13px 36px; }
.nexa-ds-textarea { min-height: 130px; resize: vertical; line-height: 1.55; }
.nexa-ds-input::placeholder,
.nexa-ds-textarea::placeholder { color: var(--nexa-ds-subtle); opacity: 1; }
.nexa-ds-input:focus,
.nexa-ds-select:focus,
.nexa-ds-textarea:focus {
    outline: 0;
    border-color: rgb(var(--nexa-ds-primary-rgb), .66);
    background: rgba(10, 12, 23, .42);
    box-shadow: var(--nexa-ds-focus);
}

/* Badges / status */
.nexa-ds-badge {
    min-height: 24px;
    padding: 4px 9px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    border: 1px solid var(--nexa-ds-border);
    border-radius: var(--nexa-ds-radius-pill);
    color: var(--nexa-ds-text-soft);
    background: rgba(255, 255, 255, .035);
    font-size: 11px;
    font-weight: 750;
    line-height: 1;
}
.nexa-ds-badge--primary { color: #e9c5ff; border-color: rgb(var(--nexa-ds-primary-rgb), .24); background: var(--nexa-ds-primary-soft); }
.nexa-ds-badge--success { color: #8ce5c0; border-color: rgba(38, 201, 138, .22); background: rgba(38, 201, 138, .10); }
.nexa-ds-badge--warning { color: #ffd892; border-color: rgba(246, 185, 75, .22); background: rgba(246, 185, 75, .10); }
.nexa-ds-badge--danger { color: #ffabb7; border-color: rgba(255, 92, 114, .22); background: rgba(255, 92, 114, .10); }

/* Tables */
.nexa-ds-table-wrap {
    overflow: auto;
    border: 1px solid var(--nexa-ds-border);
    border-radius: var(--nexa-ds-radius-lg);
    background: var(--nexa-ds-surface);
}
.nexa-ds-table {
    width: 100%;
    margin: 0;
    border-collapse: separate;
    border-spacing: 0;
    color: var(--nexa-ds-text-soft);
    font-size: 13px;
}
.nexa-ds-table th,
.nexa-ds-table td { padding: 14px 16px; border-bottom: 1px solid var(--nexa-ds-divider); vertical-align: middle; }
.nexa-ds-table th {
    color: var(--nexa-ds-muted);
    background: rgba(255, 255, 255, .018);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .055em;
    text-transform: uppercase;
}
.nexa-ds-table tbody tr:last-child td { border-bottom: 0; }
.nexa-ds-table tbody tr { transition: background var(--nexa-ds-transition-fast); }
.nexa-ds-table tbody tr:hover { background: rgba(255, 255, 255, .018); }

/* Alerts / empty states */
.nexa-ds-alert {
    padding: 14px 16px;
    display: flex;
    gap: 11px;
    border: 1px solid var(--nexa-ds-border);
    border-radius: var(--nexa-ds-radius-md);
    color: var(--nexa-ds-text-soft);
    background: var(--nexa-ds-surface-2);
    font-size: 13px;
    line-height: 1.55;
}
.nexa-ds-alert--success { border-color: rgba(38, 201, 138, .22); background: rgba(38, 201, 138, .075); }
.nexa-ds-alert--warning { border-color: rgba(246, 185, 75, .22); background: rgba(246, 185, 75, .075); }
.nexa-ds-alert--danger { border-color: rgba(255, 92, 114, .22); background: rgba(255, 92, 114, .075); }
.nexa-ds-empty {
    padding: clamp(30px, 5vw, 64px) 22px;
    display: grid;
    place-items: center;
    text-align: center;
    border: 1px dashed var(--nexa-ds-border-strong);
    border-radius: var(--nexa-ds-radius-lg);
    color: var(--nexa-ds-muted);
    background: rgba(255, 255, 255, .015);
}
.nexa-ds-empty__title { margin: 0 0 7px; color: var(--nexa-ds-text); font-size: 18px; font-weight: 800; }
.nexa-ds-empty__text { max-width: 520px; margin: 0; color: var(--nexa-ds-muted); font-size: 13px; line-height: 1.65; }
.nexa-ds-empty__actions { justify-content: center; margin-top: 16px; }

/* Toolbar */
.nexa-ds-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--nexa-ds-space-3);
}

/* Compact admin context - tokens stay the same, density changes. */
body.nexa-ds-core-v1.has-navbar-vertical-aside .nexa-ds-card { --nexa-ds-card-padding: 18px; }
body.nexa-ds-core-v1.has-navbar-vertical-aside .nexa-ds-title { font-size: clamp(24px, 2.2vw, 34px); }

@media (max-width: 991.98px) {
    .nexa-ds-grid { --nexa-ds-grid-columns: 2; }
    .nexa-ds-page-header { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 575.98px) {
    .nexa-ds-container { width: min(100% - 22px, 1280px); }
    .nexa-ds-grid { --nexa-ds-grid-columns: 1; }
    .nexa-ds-card { --nexa-ds-card-padding: 18px; border-radius: 16px; }
    .nexa-ds-panel__header,
    .nexa-ds-panel__body,
    .nexa-ds-panel__footer { padding: 16px; }
    .nexa-ds-title { font-size: clamp(27px, 9vw, 36px); }
}

@media (prefers-reduced-motion: reduce) {
    .nexa-ds-card--interactive,
    .nexa-ds-btn,
    .nexa-ds-input,
    .nexa-ds-select,
    .nexa-ds-textarea,
    .nexa-ds-table tbody tr {
        transition-duration: .01ms !important;
    }
}