/* ---------- Design tokens ---------- */
:root {
    color-scheme: dark;
    transition: background-color 160ms ease, color 160ms ease;

    --primary: #06113C;
    --accent: #9F38F9;
    --accent-text: #D6B2FF;
    --link: #C99BFF;
    --link-hover: #E0C5FF;
    --input-bg: #050D2B;
    --code-bg: #050D2B;
    --danger-bg: #42152B;
    --danger-text: #FFDCE2;
    --success-text: #7CF0C2;
    --warning-text: #FFDA8A;
    --danger-status-text: #FF9BAA;
    --info-text: #A9D4FF;
    --header-active-text: #FFFFFF;

    --bg: #030817;
    --surface: #0A1745;
    --surface-raised: #101F55;
    --surface-hover: #172963;

    --text: #F5F4FF;
    --text-muted: #B8C0E0;
    --text-subtle: #8994BE;

    --border: #263568;
    --border-strong: #394985;

    --success: #35D39A;
    --warning: #FFC857;
    --danger: #FF647C;
    --info: #75B8FF;

    --radius: 0px;
    --radius-sm: 0px;
    --radius-lg: 0px;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    --content-width: 1200px;
    --header-height: 68px;

    --shadow-sm: 0 2px 8px rgb(0 0 0 / 18%);
    --shadow-md: 0 12px 32px rgb(0 0 0 / 24%);

    --font-sans: "Plus Jakarta Sans", Inter, ui-sans-serif, system-ui,
                 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    --transition: 160ms ease;
}

/* ---------- Reset and base ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    min-height: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 1rem);
    background: var(--bg);
}

body {
    min-width: 320px;
    min-height: 100vh;
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img,
picture,
video,
canvas,
svg {
    max-width: 100%;
}

img,
video {
    height: auto;
}

button,
input,
select,
textarea {
    font: inherit;
}

button,
input,
select,
textarea,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    color: inherit;
}

a {
    color: #C99BFF;
    text-underline-offset: 0.2em;
    transition: color var(--transition);
}

a:hover {
    color: #E0C5FF;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
}

::selection {
    background: var(--accent);
    color: #fff;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0 0 var(--space-4);
    color: var(--text);
    font-weight: 700;
    line-height: 1.2;
    text-wrap: balance;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    letter-spacing: -0.045em;
}

h2 {
    font-size: clamp(1.45rem, 3vw, 2rem);
    letter-spacing: -0.025em;
}

h3 {
    font-size: 1.2rem;
}

h4 {
    font-size: 1.05rem;
}

p {
    margin: 0 0 var(--space-4);
}

p:last-child {
    margin-bottom: 0;
}

small,
.text-muted,
.muted {
    color: var(--text-muted);
}

hr,
.divider {
    height: 1px;
    margin: var(--space-6) 0;
    border: 0;
    background: var(--border);
}

/* ---------- Shared layout ---------- */
.container,
.page-container,
.home-container {
    width: min(calc(100% - 2.5rem), var(--content-width));
    margin-inline: auto;
}

.page-container,
.home-container {
    padding-block: clamp(2rem, 5vw, 3.5rem);
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.page-header p {
    max-width: 68ch;
    color: var(--text-muted);
}

.section {
    margin-block: var(--space-10);
}

.section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

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

.grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-5);
}

.grid > * {
    min-width: 0;
}

.grid-2 > * {
    grid-column: span 6;
}

.grid-3 > * {
    grid-column: span 4;
}

.grid-4 > * {
    grid-column: span 3;
}

/* ---------- Header and navigation ---------- */
.site-header,
header.site-header {
    position: relative;
    z-index: 20;
    width: 100%;
    background: var(--primary);
    border-bottom: 1px solid var(--border);
}

.header-inner,
.nav-inner {
    width: min(calc(100% - 2.5rem), var(--content-width));
    min-height: var(--header-height);
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.site-logo,
.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    text-decoration: none;
}

.site-logo:hover,
.logo:hover {
    color: #fff;
}

.site-logo img,
.logo img {
    display: block;
    width: auto;
    max-height: 40px;
}

.site-nav,
.nav-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.site-nav a,
.nav-links a {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 0.55rem 0.8rem;
    border: 1px solid transparent;
    color: var(--text-muted);
    font-size: 0.94rem;
    font-weight: 600;
    text-decoration: none;
}

.site-nav a:hover,
.nav-links a:hover,
.site-nav a[aria-current="page"],
.nav-links a[aria-current="page"],
.site-nav a.active,
.nav-links a.active {
    border-color: var(--border);
    background: var(--surface);
    color: #fff;
}

.nav-toggle {
    display: none;
}

/* ---------- Cards and panels ---------- */
.card,
.panel,
.home-card,
.stat-card {
    min-width: 0;
    padding: var(--space-6);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.card h2,
.card h3,
.panel h2,
.panel h3,
.home-card h2 {
    margin-bottom: var(--space-3);
}

.card p,
.panel p,
.home-card p {
    color: var(--text-muted);
}

.card-interactive,
a.home-card {
    display: flex;
    flex-direction: column;
    color: inherit;
    text-decoration: none;
    transition: border-color var(--transition),
                background var(--transition),
                transform var(--transition);
}

.card-interactive:hover,
a.home-card:hover {
    border-color: var(--accent);
    background: var(--surface-raised);
    color: inherit;
    transform: translateY(-2px);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: auto;
    padding-top: var(--space-5);
    color: #D6B2FF;
    font-weight: 700;
}

.card-icon {
    display: grid;
    width: 44px;
    height: 44px;
    margin-bottom: var(--space-5);
    place-items: center;
    border: 1px solid rgb(159 56 249 / 45%);
    background: rgb(159 56 249 / 12%);
    color: #D6B2FF;
}

/* ---------- Buttons ---------- */
.button,
.btn,
button,
input[type="submit"],
input[type="button"],
input[type="reset"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: 0.7rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--surface-raised);
    color: var(--text);
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition),
                border-color var(--transition),
                color var(--transition),
                transform var(--transition);
}

.button:hover,
.btn:hover,
button:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
input[type="reset"]:hover {
    border-color: var(--accent);
    background: var(--surface-hover);
    color: #fff;
}

.button:active,
.btn:active,
button:active {
    transform: translateY(1px);
}

.button-primary,
.btn-primary,
button.primary {
    border-color: var(--accent);
    background: var(--accent);
    color: #fff;
}

.button-primary:hover,
.btn-primary:hover,
button.primary:hover {
    border-color: #B96BFF;
    background: #8525DB;
    color: #fff;
}

.button-secondary,
.btn-secondary {
    background: transparent;
}

.button-danger,
.btn-danger {
    border-color: var(--danger);
    background: #42152B;
    color: #FFDCE2;
}

.button-small,
.btn-small {
    min-height: 34px;
    padding: 0.45rem 0.7rem;
    font-size: 0.875rem;
}

.button-block,
.btn-block {
    width: 100%;
}

button:disabled,
.button:disabled,
.btn:disabled,
input:disabled,
select:disabled,
textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ---------- Forms ---------- */
.form,
form {
    min-width: 0;
}

.form-group,
.form-field,
.field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

label,
.label {
    color: var(--text);
    font-size: 0.94rem;
    font-weight: 700;
}

input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="reset"]),
select,
textarea {
    width: 100%;
    min-height: 44px;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: #050D2B;
    color: var(--text);
    transition: border-color var(--transition),
                box-shadow var(--transition);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-subtle);
    opacity: 1;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px rgb(159 56 249 / 18%);
}

input[type="checkbox"],
input[type="radio"] {
    width: 1rem;
    height: 1rem;
    accent-color: var(--accent);
}

.help-text,
.form-help {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

/* ---------- Tables ---------- */
.table-wrapper,
.table-container {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border);
    background: var(--surface);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th,
td {
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

th {
    background: var(--primary);
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.045em;
    text-transform: uppercase;
    white-space: nowrap;
}

tbody tr {
    transition: background var(--transition);
}

tbody tr:hover {
    background: rgb(159 56 249 / 7%);
}

tbody tr:last-child td {
    border-bottom: 0;
}

td.numeric,
th.numeric {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* ---------- Status badges ---------- */
.badge,
.status,
.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    width: fit-content;
    max-width: 100%;
    padding: 0.25rem 0.55rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--surface-raised);
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 800;
    line-height: 1.35;
}

.badge-success,
.status-success {
    border-color: rgb(53 211 154 / 40%);
    background: rgb(53 211 154 / 10%);
    color: #7CF0C2;
}

.badge-warning,
.status-warning {
    border-color: rgb(255 200 87 / 40%);
    background: rgb(255 200 87 / 10%);
    color: #FFDA8A;
}

.badge-danger,
.status-danger {
    border-color: rgb(255 100 124 / 40%);
    background: rgb(255 100 124 / 10%);
    color: #FF9BAA;
}

.badge-info,
.status-info {
    border-color: rgb(117 184 255 / 40%);
    background: rgb(117 184 255 / 10%);
    color: #A9D4FF;
}

/* ---------- Alerts and messages ---------- */
.alert,
.message,
.notice {
    margin-block: var(--space-4);
    padding: var(--space-4) var(--space-5);
    border: 1px solid var(--border-strong);
    border-left: 4px solid var(--info);
    background: var(--surface);
    color: var(--text);
}

.alert-success,
.message-success {
    border-left-color: var(--success);
}

.alert-warning,
.message-warning {
    border-left-color: var(--warning);
}

.alert-danger,
.message-error {
    border-left-color: var(--danger);
}

.alert-info,
.message-info {
    border-left-color: var(--info);
}

/* ---------- Statistics and data displays ---------- */
.stat-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
}

.stat-value {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
    font-variant-numeric: tabular-nums;
}

.stat-note {
    color: var(--text-subtle);
    font-size: 0.85rem;
}

/* ---------- Lists and utility classes ---------- */
.list-clean {
    margin: 0;
    padding: 0;
    list-style: none;
}

.list-clean > li + li {
    border-top: 1px solid var(--border);
}

.list-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding-block: var(--space-4);
}

.text-accent {
    color: #D6B2FF;
}

.text-success {
    color: var(--success);
}

.text-warning {
    color: var(--warning);
}

.text-danger {
    color: var(--danger);
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.w-full {
    width: 100%;
}

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.empty-state {
    padding: var(--space-10) var(--space-5);
    border: 1px dashed var(--border-strong);
    color: var(--text-muted);
    text-align: center;
}

code,
pre,
kbd {
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

code {
    padding: 0.12em 0.35em;
    border: 1px solid var(--border);
    background: #050D2B;
    color: #D6B2FF;
}

pre {
    max-width: 100%;
    overflow: auto;
    padding: var(--space-5);
    border: 1px solid var(--border);
    background: #050D2B;
    color: var(--text);
}

pre code {
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
}

[hidden] {
    display: none !important;
}

/* ---------- Footer ---------- */
.site-footer,
footer.site-footer,
.home-footer {
    margin-top: var(--space-12);
    padding: var(--space-6) max(1.25rem, calc((100% - var(--content-width)) / 2));
    border-top: 1px solid var(--border);
    color: var(--text-subtle);
    font-size: 0.875rem;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.site-footer a,
footer.site-footer a,
.home-footer a {
    color: var(--text-muted);
}

/* ---------- Responsive behaviour ---------- */
@media (max-width: 900px) {
    .grid-4 > * {
        grid-column: span 6;
    }

    .grid-3 > * {
        grid-column: span 6;
    }

    .header-inner,
    .nav-inner {
        gap: var(--space-3);
    }
}

@media (max-width: 680px) {
    :root {
        --header-height: 60px;
    }

    .container,
    .page-container,
    .home-container,
    .header-inner,
    .nav-inner {
        width: min(calc(100% - 1.5rem), var(--content-width));
    }

    .page-container,
    .home-container {
        padding-block: var(--space-8);
    }

    .page-header {
        flex-direction: column;
        gap: var(--space-3);
        margin-bottom: var(--space-6);
    }

    .section {
        margin-block: var(--space-8);
    }

    .grid {
        gap: var(--space-3);
    }

    .grid-2 > *,
    .grid-3 > *,
    .grid-4 > * {
        grid-column: 1 / -1;
    }

    .card,
    .panel,
    .home-card,
    .stat-card {
        padding: var(--space-5);
    }

    .header-inner {
        flex-wrap: wrap;
        padding-block: 0.5rem;
    }

    .site-nav,
    .nav-links {
        gap: 0;
    }

    .site-nav a,
    .nav-links a {
        padding-inline: 0.55rem;
        font-size: 0.875rem;
    }

    .form-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .form-actions .button,
    .form-actions .btn,
    .form-actions button {
        width: 100%;
    }

    th,
    td {
        padding: 0.75rem;
    }

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 440px) {
    .site-nav,
    .nav-links {
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 0.25rem;
    }

    .site-nav a,
    .nav-links a {
        flex: 0 0 auto;
    }

    .cluster > .button,
    .cluster > .btn,
    .cluster > button {
        flex: 1 1 auto;
    }
}

/* ---------- Motion and contrast preferences ---------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: more) {
    :root {
        --border: #6473A6;
        --border-strong: #8997C7;
        --text-muted: #D5DBF4;
    }
}

/* ---------- Print ---------- */
@media print {
    :root {
        color-scheme: light;
    }

    body {
        background: #fff !important;
        color: #111 !important;
    }

    .site-header,
    .site-footer,
    .nav-toggle,
    .no-print,
    button,
    .button,
    .btn {
        display: none !important;
    }

    .card,
    .panel,
    .home-card,
    .stat-card,
    .table-wrapper,
    .table-container {
        border: 1px solid #aaa !important;
        background: #fff !important;
        box-shadow: none !important;
        color: #111 !important;
        break-inside: avoid;
    }

    a {
        color: #111 !important;
        text-decoration: underline;
    }

    th {
        background: #eee !important;
        color: #111 !important;
    }
}


/* ---------- Light and dark theme support ---------- */
/*
   Dark mode is the default.
   Set data-theme="light" or data-theme="dark" on <html> to choose manually.
   If no theme is set, the user's operating-system preference is used.
*/

:root[data-theme="light"] {
    color-scheme: light;

    --primary: #FFFFFF;
    --accent: #8625D9;
    --accent-text: #7020B5;
    --link: #7020B5;
    --link-hover: #4D147F;

    --bg: #F5F7FC;
    --surface: #FFFFFF;
    --surface-raised: #F0F2FA;
    --surface-hover: #E8EAF5;

    --text: #111936;
    --text-muted: #4D5875;
    --text-subtle: #66708A;

    --border: #D9DEEC;
    --border-strong: #B8C1D8;

    --input-bg: #FFFFFF;
    --code-bg: #F0F2FA;

    --danger-bg: #FFF0F2;
    --danger-text: #A71935;
    --success-text: #087A52;
    --warning-text: #825300;
    --danger-status-text: #A71935;
    --info-text: #145DA0;
    --header-active-text: #111936;

    --shadow-sm: 0 2px 8px rgb(6 17 60 / 7%);
    --shadow-md: 0 12px 32px rgb(6 17 60 / 12%);
}

/* Follow the operating-system theme only when no explicit choice is set. */
@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        color-scheme: light;

        --primary: #FFFFFF;
        --accent: #8625D9;
        --accent-text: #7020B5;
        --link: #7020B5;
        --link-hover: #4D147F;

        --bg: #F5F7FC;
        --surface: #FFFFFF;
        --surface-raised: #F0F2FA;
        --surface-hover: #E8EAF5;

        --text: #111936;
        --text-muted: #4D5875;
        --text-subtle: #66708A;

        --border: #D9DEEC;
        --border-strong: #B8C1D8;

        --input-bg: #FFFFFF;
        --code-bg: #F0F2FA;

        --danger-bg: #FFF0F2;
        --danger-text: #A71935;
        --success-text: #087A52;
        --warning-text: #825300;
        --danger-status-text: #A71935;
        --info-text: #145DA0;
        --header-active-text: #111936;

        --shadow-sm: 0 2px 8px rgb(6 17 60 / 7%);
        --shadow-md: 0 12px 32px rgb(6 17 60 / 12%);
    }
}

/* Replace fixed dark-theme colours with theme-aware tokens. */
a {
    color: var(--link);
}

a:hover {
    color: var(--link-hover);
}

.card-link,
.card-icon,
.text-accent {
    color: var(--accent-text);
}

input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="reset"]),
select,
textarea,
code,
pre {
    background: var(--input-bg);
}

pre {
    background: var(--code-bg);
}

code {
    background: var(--code-bg);
    color: var(--accent-text);
}

.button-danger,
.btn-danger {
    background: var(--danger-bg);
    color: var(--danger-text);
}

.badge-success,
.status-success {
    color: var(--success-text);
}

.badge-warning,
.status-warning {
    color: var(--warning-text);
}

.badge-danger,
.status-danger {
    color: var(--danger-status-text);
}

.badge-info,
.status-info {
    color: var(--info-text);
}

/* Keep header links readable in both themes. */
.site-logo:hover,
.logo:hover,
.site-nav a:hover,
.nav-links a:hover,
.site-nav a[aria-current="page"],
.nav-links a[aria-current="page"],
.site-nav a.active,
.nav-links a.active {
    color: var(--header-active-text);
}

/* The theme transition is intentionally subtle. */
html,
body,
.site-header,
.card,
.panel,
.home-card,
.stat-card,
.table-wrapper,
.table-container,
input,
select,
textarea,
button,
.button,
.btn {
    transition:
        background-color 160ms ease,
        color 160ms ease,
        border-color 160ms ease,
        box-shadow 160ms ease;
}

/* Preserve accessible behaviour for people who prefer reduced motion. */
@media (prefers-reduced-motion: reduce) {
    html,
    body,
    .site-header,
    .card,
    .panel,
    .home-card,
    .stat-card,
    .table-wrapper,
    .table-container,
    input,
    select,
    textarea,
    button,
    .button,
    .btn {
        transition: none;
    }
}