:root {
    color-scheme: dark;
    --bg: #000000;
    --noise: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.5' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.25'/%3E%3C/svg%3E");
    --panel: rgba(12, 12, 12, 0.94);
    --panel-border: rgba(255, 255, 255, 0.26);
    --panel-border-strong: rgba(255, 255, 255, 0.48);
    --text: #ffffff;
    --muted: rgba(255, 255, 255, 0.62);
    --soft: rgba(255, 255, 255, 0.05);
    --protocol-exec: #98c379;
    --protocol-symlink: #56b6c2;
    --protocol-dir: #61afef;
    --shadow: rgba(0, 0, 0, 0.55);
    --radius: 22px;
}

* {
    box-sizing: border-box;
}

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

body.paper-terminal {
    min-height: 100svh;
    margin: 0;
    padding: clamp(0.75rem, 2vw, 2rem);
    background-color: var(--bg);
    background-image: var(--noise);
    color: var(--text);
    display: grid;
    place-items: center;
    font-family: "Source Code Pro", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    line-height: 1.65;
    overflow-x: hidden;
}

body.paper-terminal::before {
    content: "";
    position: fixed;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.02), transparent 35%, rgba(255, 255, 255, 0.015));
    pointer-events: none;
}

body.paper-terminal::after {
    content: "";
    position: fixed;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px);
    background-size: 100% 4px;
    opacity: 0.18;
    pointer-events: none;
}

.terminal {
    width: min(980px, 100%);
    min-height: min(820px, calc(100svh - 1.5rem));
    display: flex;
    flex-direction: column;
    border: 2px solid var(--panel-border-strong);
    border-radius: var(--radius);
    background: var(--panel);
    box-shadow: 0 28px 90px var(--shadow), 0 0 0 1px rgba(255, 255, 255, 0.18), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
    overflow: hidden;
    backdrop-filter: blur(3px);
    transition: box-shadow 0.22s ease, border-color 0.22s ease;
}

.terminal:hover,
.terminal:focus-within {
    border-color: rgba(255, 255, 255, 0.62);
    box-shadow: 0 28px 90px var(--shadow), 0 0 0 1px rgba(255, 255, 255, 0.26), inset 0 0 0 1px rgba(255, 255, 255, 0.12), 0 0 24px rgba(255, 255, 255, 0.12);
}

.terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border-bottom: 2px solid var(--panel-border);
    background: rgba(255, 255, 255, 0.03);
}

.window-controls {
    display: flex;
    gap: 0.55rem;
}

.window-dot {
    width: 0.85rem;
    height: 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 50%;
    background: transparent;
}

.terminal-title,
.history-copy,
.history-meta,
.system-line,
.prompt-row,
.protocol-note,
.msg-card,
.ascii-banner {
    margin: 0;
}

.terminal-title {
    color: var(--muted);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.terminal-main {
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: clamp(1rem, 3vw, 2rem);
    gap: 1rem;
}

.terminal-output {
    flex: 1;
    min-height: 24rem;
    overflow-y: auto;
    padding-right: 0.35rem;
    scroll-behavior: smooth;
}

.history-block {
    margin-bottom: 1.1rem;
}

.system-line,
.history-meta,
.protocol-note {
    color: var(--muted);
}

.history-copy,
.msg-card {
    color: var(--text);
    max-width: 74ch;
    white-space: pre-line;
}

.prompt-row,
.terminal-prompt {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    align-items: baseline;
}

.prompt-host,
.prompt-path,
.prompt-command {
    color: var(--text);
}

.command-group,
.msg-stack {
    display: grid;
    gap: 0.45rem;
}

.protocol-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 0.2rem;
}

.protocol-link {
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease, opacity 0.2s ease;
}

.protocol-link--exec {
    color: var(--protocol-exec);
}

.protocol-link--symlink {
    color: var(--protocol-symlink);
}

.protocol-link--dir {
    color: var(--protocol-dir);
}

.submit-command {
    appearance: none;
    border: 1px solid var(--panel-border-strong);
    background: transparent;
    color: var(--text);
    padding: 0.38rem 0.65rem;
    font: inherit;
    letter-spacing: 0.03em;
    justify-self: end;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.protocol-link:hover,
.protocol-link:focus-visible {
    border-bottom-color: currentColor;
    outline: none;
}

.submit-command:hover,
.submit-command:focus-visible,
.msg-link:hover,
.msg-link:focus-visible,
.work-link:hover,
.work-link:focus-visible,
.system-link:hover,
.system-link:focus-visible,
.system-qr:hover,
.system-qr:focus-visible {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
    outline: none;
}

.protocol-note {
    margin-top: 0.2rem;
}

.view-shell {
    padding-top: 1rem;
}

.ascii-banner {
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--panel-border);
    background: var(--soft);
    color: var(--text);
    font-size: clamp(0.54rem, 0.9vw, 0.78rem);
    line-height: 1.28;
    white-space: pre;
    overflow-x: auto;
}

.works-list {
    display: grid;
    gap: 0.55rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.works-item {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.work-status {
    color: var(--muted);
}

.work-link,
.msg-link {
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.32);
    width: fit-content;
}

.msg-card {
    display: grid;
    gap: 0.35rem;
}

.system-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: start;
    padding: 0.9rem;
    border: 1px solid var(--panel-border);
    background: var(--soft);
}

.system-copy {
    display: grid;
    gap: 0.45rem;
    min-width: 0;
}

.system-heading,
.system-linkline {
    margin: 0;
}

.system-heading {
    color: var(--text);
    letter-spacing: 0.08em;
}

.system-linkline {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: baseline;
}

.system-link-label {
    color: var(--muted);
}

.system-link {
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.32);
    width: fit-content;
    word-break: break-word;
}

.system-qr {
    display: grid;
    gap: 0.45rem;
    justify-items: center;
    padding: 0.55rem;
    color: var(--text);
    text-decoration: none;
    border: 1px solid var(--panel-border-strong);
    background: transparent;
}

.system-qr-image {
    display: block;
    width: 112px;
    height: 112px;
    background: #ffffff;
}

.system-qr-caption {
    color: var(--muted);
    font-size: 0.88rem;
    text-align: center;
}

.terminal-form {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.9rem;
    align-items: center;
    padding-top: 0.75rem;
    cursor: text;
}

.command-input {
    width: 100%;
    min-width: 0;
    border: 0;
    background: transparent;
    color: var(--text);
    padding: 0;
    font: inherit;
    caret-color: var(--text);
}

.command-input:focus {
    outline: none;
}

.command-input::placeholder {
    color: transparent;
}

.command-input:disabled,
.submit-command:disabled,
.protocol-link[aria-disabled="true"] {
    opacity: 0.45;
    cursor: not-allowed;
}

.protocol-link[aria-disabled="true"] {
    pointer-events: none;
}

.tab-hint {
    min-height: 1.3rem;
    margin: -0.3rem 0 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 700px) {
    .terminal {
        min-height: calc(100svh - 1rem);
        border-radius: 18px;
    }

    .system-card {
        grid-template-columns: 1fr;
    }

    .system-qr {
        justify-self: start;
    }

    .terminal-form {
        grid-template-columns: auto minmax(0, 1fr) auto;
        gap: 0.75rem;
        align-items: center;
    }

    .submit-command {
        justify-self: end;
    }

    .ascii-banner {
        font-size: 0.5rem;
    }
}

@media (max-width: 520px) {
    body.paper-terminal {
        padding: 0.5rem;
    }

    .terminal-header,
    .terminal-main {
        padding: 1rem;
    }

    .terminal-title {
        font-size: 0.76rem;
    }
}