*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #1e1e2e;
    --surface: #313244;
    --overlay: #45475a;
    --text: #cdd6f4;
    --subtext: #a6adc8;
    --accent: #89b4fa;
    --red: #f38ba8;
    --green: #a6e3a1;
    --yellow: #f9e2af;
    --border: #585b70;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: var(--surface);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
}

header h1 {
    font-size: 1.2rem;
}

header h1 a {
    color: var(--accent);
    text-decoration: none;
}

header nav {
    display: flex;
    gap: 1rem;
    flex: 1;
}

header nav a {
    color: var(--subtext);
    text-decoration: none;
    font-size: 0.9rem;
}

header nav a:hover {
    color: var(--text);
}

.logout-form button {
    background: transparent;
    color: var(--subtext);
    border: 1px solid var(--border);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.logout-form button:hover {
    background: var(--overlay);
    color: var(--text);
}

main {
    flex: 1;
    padding: 1.5rem;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

footer {
    text-align: center;
    padding: 1rem;
    color: var(--subtext);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
}

h2 {
    margin-bottom: 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--subtext);
}

input, textarea, button {
    font-family: inherit;
    font-size: 0.95rem;
}

input[type="password"],
input[type="text"] {
    width: 100%;
    max-width: 320px;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--surface);
    color: var(--text);
}

textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--surface);
    color: var(--text);
    font-family: monospace;
    font-size: 0.9rem;
    resize: vertical;
}

button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: var(--accent);
    color: var(--bg);
    cursor: pointer;
    font-weight: 500;
}

button:hover {
    opacity: 0.9;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

button.danger {
    background: var(--red);
    border-color: var(--red);
}

/* Login page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-page main {
    background: var(--surface);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    max-width: 400px;
}

.login-page h1 {
    margin-bottom: 1.5rem;
    text-align: center;
}

.login-page button {
    width: 100%;
    margin-top: 0.5rem;
}

/* Workspace cards */
#workspaces-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.workspace-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.workspace-card .alias {
    font-weight: 600;
    flex: 1;
    min-width: 120px;
}

.workspace-card .status {
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-ready { background: var(--green); color: var(--bg); }
.status-starting { background: var(--yellow); color: var(--bg); }
.status-stopping { background: var(--overlay); color: var(--text); }
.status-error { background: var(--red); color: var(--bg); }
.status-closed { background: var(--overlay); color: var(--subtext); }

.workspace-card .stage {
    color: var(--subtext);
    font-size: 0.85rem;
    min-width: 80px;
}

.workspace-card .clients {
    color: var(--subtext);
    font-size: 0.85rem;
}

.workspace-card .actions {
    display: flex;
    gap: 0.5rem;
}

.workspace-card .actions button {
    font-size: 0.85rem;
    padding: 0.3rem 0.75rem;
}

.workspace-card .error-msg {
    color: var(--red);
    font-size: 0.8rem;
    flex-basis: 100%;
}

/* SSH config page */
#config-editor {
    margin-bottom: 1.5rem;
}

#config-errors {
    font-size: 0.85rem;
    margin: 0.5rem 0;
}

#config-errors .error-msg {
    color: var(--red);
}

#config-errors .success-msg {
    color: var(--green);
}

#alias-list {
    list-style: none;
}

#alias-list li {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.4rem 0.75rem;
    margin-bottom: 0.4rem;
    font-family: monospace;
    font-size: 0.9rem;
}

#alias-list li.error-msg {
    color: var(--red);
    border-color: var(--red);
    font-family: inherit;
}

/* Keys page */
#keys-section h3 {
    margin: 1.5rem 0 0.5rem;
}

#keys-list {
    list-style: none;
}

#keys-list li {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

#keys-list .key-name {
    font-weight: 600;
    flex: 1;
}

#keys-list .key-fingerprint {
    color: var(--subtext);
    font-family: monospace;
    font-size: 0.8rem;
}

#keys-list .key-algorithm {
    color: var(--subtext);
    font-size: 0.85rem;
}

.code-block {
    background: var(--overlay);
    border-radius: 4px;
    padding: 0.75rem;
    font-family: monospace;
    font-size: 0.85rem;
    margin: 0.5rem 0;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Shared status, action, and focus states */
a {
    color: var(--accent);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

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

button:disabled:hover {
    opacity: 0.5;
}

.error-msg {
    color: var(--red);
}

.success-msg {
    color: var(--green);
}

.actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.actions a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.1rem;
    padding: 0.3rem 0.75rem;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: var(--accent);
    color: var(--bg);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
}

.actions a:hover {
    opacity: 0.9;
}

/* Workspace cards and action-required panels */
.workspace-card {
    flex-wrap: wrap;
    align-items: center;
}

.workspace-card .alias {
    flex: 1 1 10rem;
    overflow-wrap: anywhere;
}

.workspace-card .stage {
    flex: 1 1 12rem;
    min-width: 10rem;
    overflow-wrap: anywhere;
}

.workspace-card > .actions {
    flex: 0 1 auto;
    justify-content: flex-end;
    min-width: min(100%, 12rem);
    margin-left: auto;
}

.workspace-card > .action-status,
.workspace-card > .error-msg {
    flex: 1 0 100%;
    min-width: 0;
}

.workspace-card .countdown {
    color: var(--yellow);
    font-size: 0.85rem;
    white-space: nowrap;
}

.workspace-card .action-status,
.host-trust-status {
    color: var(--subtext);
    font-size: 0.85rem;
}

.workspace-card .host-trust-panel,
.workspace-card .authentication-error {
    flex: 1 0 100%;
    min-width: 0;
    margin-top: 0.25rem;
    padding: 1rem;
    border: 1px solid var(--yellow);
    border-radius: 6px;
    background: var(--overlay);
    color: var(--text);
    font-size: 0.9rem;
}

.workspace-card .host-trust-panel.blocking-warning {
    border-color: var(--red);
}

.host-trust-panel h3,
.authentication-error h3 {
    margin-bottom: 0.5rem;
    color: var(--text);
    font-size: 1rem;
}

.host-trust-panel p,
.authentication-error p {
    margin-top: 0.45rem;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.host-trust-panel .actions,
.authentication-error .actions {
    margin-top: 0.8rem;
}

.host-trust-panel .cancel-host-btn {
    border-color: var(--border);
    background: transparent;
    color: var(--text);
}

.host-trust-panel.blocking-warning .replace-host-btn,
.authentication-error .danger {
    background: var(--red);
    border-color: var(--red);
    color: var(--bg);
}

/* Dashboard status is inserted immediately above the card list. */
.dashboard-status {
    min-height: 1.35rem;
    margin: 0.25rem 0 0.5rem;
    color: var(--subtext);
    overflow-wrap: anywhere;
}

.dashboard-status:empty {
    display: none;
}

/* Key upload form and fixed slots */
#keys-section section + section {
    margin-top: 1.5rem;
}

#keys-status {
    min-height: 1.35rem;
    margin: 0.25rem 0 0.5rem;
    overflow-wrap: anywhere;
}

#upload-key-help {
    max-width: 70rem;
    margin-bottom: 0.75rem;
    color: var(--subtext);
    line-height: 1.45;
}

#key-upload-form {
    display: flex;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
}

#key-upload-form .form-group {
    flex: 1 1 13rem;
    min-width: 13rem;
    margin-bottom: 0;
}

#key-upload-form input[type="file"] {
    width: 100%;
    max-width: 100%;
    padding: 0.35rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--overlay);
    color: var(--text);
}

#key-upload-form button {
    flex: 0 0 auto;
}

#keys-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
}

#keys-list > li {
    display: block;
    min-width: 0;
    min-height: 10rem;
    margin-bottom: 0;
    padding: 1rem;
    border-radius: 8px;
}

#keys-list > li h4 {
    margin-bottom: 0.75rem;
    color: var(--accent);
    font-size: 1rem;
}

#keys-list .key-slot-content {
    display: flex;
    flex-direction: column;
    min-width: 0;
    gap: 0.45rem;
}

#keys-list .key-slot-content > p {
    line-height: 1.4;
    overflow-wrap: anywhere;
}

#keys-list .key-slot-content .actions {
    margin-top: 0.35rem;
}

#keys-list .key-name,
#keys-list .key-algorithm,
#keys-list .key-fingerprint {
    min-width: 0;
    overflow-wrap: anywhere;
}

#keys-list .key-name {
    flex: none;
    font-weight: 600;
}

#keys-list .key-algorithm,
#keys-list .key-fingerprint {
    color: var(--subtext);
}

#keys-list .key-fingerprint {
    font-family: monospace;
    font-size: 0.8rem;
}

#keys-list button {
    font-size: 0.85rem;
    padding: 0.3rem 0.65rem;
}

#keys-list .upload-slot {
    background: transparent;
    color: var(--accent);
}

.clipboard-fallback {
    position: fixed;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

/* SSH configuration guidance, status, and best-effort diagnostics */
#config-guidance {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-left: 3px solid var(--accent);
    background: var(--surface);
    color: var(--subtext);
    line-height: 1.5;
    overflow-wrap: anywhere;
}

#config-guidance code {
    color: var(--text);
    font-family: monospace;
}

#config-editor {
    margin-bottom: 1.5rem;
}

#config-editor > label {
    color: var(--subtext);
}

#config-text {
    display: block;
    min-height: 20rem;
    margin-top: 0.35rem;
}

#config-status {
    min-height: 1.35rem;
    margin: 0.5rem 0 0;
    overflow-wrap: anywhere;
}

#config-errors {
    margin: 0.5rem 0;
}

#config-errors:empty {
    display: none;
}

#config-errors .error-msg {
    display: block;
    margin-top: 0.35rem;
    padding: 0.55rem 0.75rem;
    border-left: 3px solid var(--red);
    background: var(--surface);
    line-height: 1.4;
    overflow-wrap: anywhere;
}

#save-config {
    margin-top: 0.25rem;
}

#alias-list {
    margin-top: 0.5rem;
}

#alias-list li {
    overflow-wrap: anywhere;
}

@media (max-width: 760px) {
    main {
        padding: 1rem;
    }

    header {
        flex-wrap: wrap;
        align-items: flex-start;
        gap: 0.65rem;
    }

    header nav {
        order: 3;
        flex-basis: 100%;
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    #key-upload-form {
        align-items: stretch;
    }

    #key-upload-form .form-group {
        flex-basis: 100%;
        min-width: 0;
    }

    #key-upload-form button {
        width: 100%;
    }

    #keys-list {
        grid-template-columns: 1fr;
    }

    .workspace-card {
        align-items: flex-start;
    }

    .workspace-card .alias,
    .workspace-card .stage,
    .workspace-card > .clients,
    .workspace-card > .countdown,
    .workspace-card > .actions {
        flex-basis: 100%;
        min-width: 0;
        margin-left: 0;
    }

    .workspace-card > .actions {
        justify-content: flex-start;
    }

    .workspace-card .status {
        align-self: flex-start;
    }

    #config-text {
        min-height: 18rem;
    }
}