:root {
    color-scheme: dark;
    --background: #000000;
    --green: #33ff66;
    --green-dim: #1f993f;
    --green-faint: rgba(51, 255, 102, 0.08);
    --green-glow: rgba(51, 255, 102, 0.35);
    --orange: #ffa500;
    --orange-dim: #995f00;
    --orange-faint: rgba(255, 165, 0, 0.1);
    --orange-glow: rgba(255, 165, 0, 0.4);
}

* {
    box-sizing: border-box;
}

html {
    background: var(--background);
}

body {
    margin: 0;
    min-height: 100dvh;
    background:
        radial-gradient(ellipse at 50% 0%, var(--green-faint), transparent 62%), var(--background);
    color: var(--green);
    font-family: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    line-height: 1.4;
    text-shadow: 0 0 6px var(--green-glow);
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 2px,
        rgba(0, 0, 0, 0.16) 2px,
        rgba(0, 0, 0, 0.16) 3px
    );
}

::selection {
    background: var(--orange);
    color: var(--background);
}

button {
    font: inherit;
    color: var(--orange);
    background: transparent;
    border: 1px solid var(--orange-dim);
    min-height: 44px;
    padding: 0.6rem 0.9rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
}

button:hover,
button:focus-visible {
    background: var(--orange-faint);
    border-color: var(--orange);
    box-shadow: 0 0 0.75rem var(--orange-glow);
}

button:focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: 2px;
}

.screen {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-height: 100dvh;
    max-width: 42rem;
    margin-inline: auto;
    padding: clamp(1rem, 4vw, 2rem);
}

.titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--orange-dim);
    padding-bottom: 0.75rem;
}

.titlebar h1 {
    margin: 0;
    color: var(--orange);
    font-size: clamp(1.4rem, 6vw, 2.25rem);
    letter-spacing: 0.18em;
    text-shadow: 0 0 6px var(--orange-glow);
}

.cursor {
    color: var(--green);
    animation: blink 1.1s steps(1, end) infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

@keyframes pulse {
    50% {
        opacity: 0.35;
    }
}

main {
    flex: 1;
}

.tab-bar {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--orange-dim);
    padding-bottom: 0.5rem;
}

.tab {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0.6rem 1rem;
    border: 1px solid var(--orange-dim);
    background: transparent;
    color: var(--green-dim);
    letter-spacing: 0.06em;
    text-decoration: none;
    text-transform: uppercase;
    cursor: pointer;
}

.tab:hover,
.tab:focus-visible {
    color: var(--orange);
    background: var(--orange-faint);
    border-color: var(--orange);
    box-shadow: 0 0 0.75rem var(--orange-glow);
}

.tab:focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: 2px;
}

body:has(#environment:target) .tab[href='#environment'],
body:has(#prompt:target) .tab[href='#prompt'],
body:not(:has(.panel:target)) .tab[href='#environment'] {
    color: var(--orange);
    background: var(--green-faint);
    border-color: var(--orange);
    box-shadow: 0 0 0.75rem var(--orange-glow);
}

.panel {
    display: none;
}

.panel:target {
    display: block;
}

main:not(:has(.panel:target)) .panel:first-of-type {
    display: block;
}

.panel-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.panel-header h2 {
    margin: 0;
}

.environment-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 1rem;
}

.prompt-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.prompt-action {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    min-height: 44px;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    line-height: 1;
    text-transform: none;
}

.prompt-action .icon {
    width: 1.25rem;
    height: 1.25rem;
    fill: currentColor;
}

.prompt-action sub {
    align-self: flex-end;
    font-size: 0.6em;
    line-height: 1;
}

.editor.prompt-editor {
    min-height: 16rem;
}

h2 {
    margin: 0 0 0.75rem;
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    color: var(--orange);
}

.environment {
    display: grid;
    gap: 0.75rem;
    margin: 0;
}

.environment-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border: 1px solid var(--orange-dim);
    background: var(--green-faint);
    padding: 0.75rem;
}

.environment-row dt {
    flex-shrink: 0;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--orange-dim);
}

.environment-row dd {
    margin: 0;
    text-align: right;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.empty-state {
    margin: 0;
    color: var(--orange-dim);
}

.count {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: var(--orange-dim);
}

.provider-icon {
    width: 1.5rem;
    height: 1.5rem;
    fill: currentColor;
    color: var(--green-dim);
    opacity: 0.45;
}

.provider-icon.is-checking {
    color: var(--orange);
    opacity: 1;
    filter: drop-shadow(0 0 0.5rem var(--orange-glow));
    animation: pulse 0.9s ease-in-out infinite;
}

.provider-icon.is-on {
    color: var(--green);
    opacity: 1;
    filter: drop-shadow(0 0 0.5rem var(--green-glow));
}

.provider-icon.is-error {
    color: var(--orange);
    opacity: 1;
    filter: drop-shadow(0 0 0.4rem var(--orange-glow));
}

dialog {
    width: min(92vw, 34rem);
    max-width: none;
    padding: 0;
    border: 1px solid var(--orange-dim);
    background: var(--background);
    color: var(--green);
    box-shadow:
        0 0 2rem var(--orange-glow),
        inset 0 0 2rem var(--green-faint);
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(2px);
}

.dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--orange-dim);
}

.dialog-header h2 {
    margin: 0;
    letter-spacing: 0.2em;
}

.icon-button {
    width: 44px;
    padding: 0;
    font-size: 1.4rem;
    line-height: 1;
}

.dialog-body {
    display: grid;
    gap: 0.5rem;
    padding: 1rem;
}

.editor-label {
    color: var(--orange);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
}

.editor {
    display: block;
    width: 100%;
    min-height: 12rem;
    max-height: 55vh;
    resize: vertical;
    padding: 0.75rem;
    border: 1px solid var(--orange-dim);
    background: var(--background);
    color: var(--green);
    caret-color: var(--orange);
    font: inherit;
    line-height: 1.5;
}

.editor:focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: -1px;
    border-color: var(--orange);
}

.editor::placeholder {
    color: var(--green-dim);
}

.dialog-hint {
    margin: 0;
    font-size: 0.7rem;
    color: var(--orange-dim);
}

.dialog-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--orange-dim);
}

.spacer {
    flex: 1;
}