:root {
    --bg: #eef4ff;
    --bg-spot-a: rgba(37, 99, 235, 0.17);
    --bg-spot-b: rgba(14, 165, 233, 0.12);
    --panel: #ffffff;
    --panel-soft: #f8fafc;
    --field-bg: #ffffff;
    --preview-bg: #e5e7eb;
    --preview-empty-bg: linear-gradient(180deg, #f8fafc, #eef2f7);
    --text: #0f172a;
    --text-soft: #64748b;
    --line: #e2e8f0;
    --line-strong: #cbd5e1;
    --accent: #2563eb;
    --accent-soft: #dbeafe;
    --success: #15803d;
    --success-soft: #dcfce7;
    --warning: #b45309;
    --warning-soft: #ffedd5;
    --danger: #b91c1c;
    --danger-soft: #fee2e2;
    --terminal-bg: #0f172a;
    --terminal-text: #cbd5e1;
    --terminal-line: rgba(255, 255, 255, 0.08);
    --terminal-info: #dbeafe;
    --terminal-warning: #fde68a;
    --terminal-error: #fca5a5;
    --terminal-success: #86efac;
    --terminal-link: #93c5fd;
    --progress-track-bg: #dbe4f0;
    --button-border: #1d4ed8;
    --focus-ring: rgba(37, 99, 235, 0.14);
    --theme-switch-bg: rgba(255, 255, 255, 0.72);
    --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    --radius: 16px;
    --radius-sm: 12px;
}

:root[data-theme='dark'] {
    --bg: #08111f;
    --bg-spot-a: rgba(59, 130, 246, 0.26);
    --bg-spot-b: rgba(6, 182, 212, 0.16);
    --panel: #0f1b2e;
    --panel-soft: #14243b;
    --field-bg: #0b1628;
    --preview-bg: #0b1628;
    --preview-empty-bg: linear-gradient(180deg, #12233b, #0d1728);
    --text: #e5eefc;
    --text-soft: #8fa3c2;
    --line: rgba(148, 163, 184, 0.18);
    --line-strong: rgba(148, 163, 184, 0.34);
    --accent: #60a5fa;
    --accent-soft: rgba(96, 165, 250, 0.16);
    --success: #4ade80;
    --success-soft: rgba(74, 222, 128, 0.14);
    --warning: #f59e0b;
    --warning-soft: rgba(245, 158, 11, 0.16);
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.16);
    --terminal-bg: #020817;
    --terminal-text: #d7e5ff;
    --terminal-line: rgba(148, 163, 184, 0.14);
    --terminal-info: #bfdbfe;
    --terminal-warning: #fcd34d;
    --terminal-error: #fda4af;
    --terminal-success: #86efac;
    --terminal-link: #93c5fd;
    --progress-track-bg: rgba(148, 163, 184, 0.2);
    --button-border: #3b82f6;
    --focus-ring: rgba(96, 165, 250, 0.22);
    --theme-switch-bg: rgba(15, 23, 42, 0.58);
    --shadow: 0 24px 60px rgba(2, 6, 23, 0.42);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

html {
    color-scheme: light;
}

:root[data-theme='dark'] {
    color-scheme: dark;
}

body {
    background:
        radial-gradient(circle at top right, var(--bg-spot-a), transparent 30%),
        radial-gradient(circle at top left, var(--bg-spot-b), transparent 36%),
        var(--bg);
    color: var(--text);
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    padding: 24px;
    transition: background-color 0.22s ease, color 0.22s ease;
}

.app {
    max-width: 1320px;
    margin: 0 auto;
}

.app-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 20px;
}

.brand-block {
    display: grid;
    gap: 8px;
}

.caption {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-soft);
}

.title {
    margin: 0;
    font-size: 30px;
    font-weight: 650;
    letter-spacing: -0.03em;
}

.theme-switcher {
    min-width: 240px;
    display: grid;
    gap: 10px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--theme-switch-bg);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.theme-switcher-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-soft);
}

.theme-switcher-controls {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.theme-option {
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--text-soft);
    padding: 10px 12px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.16s ease, background-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.theme-option:hover {
    border-color: var(--line-strong);
    color: var(--text);
}

.theme-option.active {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
    transform: translateY(-1px);
}

.app-grid {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 20px;
}

.sidebar,
.main {
    min-width: 0;
}

.main {
    display: grid;
    gap: 20px;
}

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: background-color 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.form-card {
    padding: 20px;
}

.form-grid {
    display: grid;
    gap: 16px;
}

.field {
    display: grid;
    gap: 8px;
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

label {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-soft);
}

input,
select,
button {
    font: inherit;
}

input,
select {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--field-bg);
    color: var(--text);
    padding: 12px 14px;
    outline: none;
    transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

input:focus,
select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.form-hint,
.form-note {
    color: var(--text-soft);
    font-size: 13px;
    line-height: 1.5;
}

.form-note {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}

.password-wrap {
    position: relative;
}

.password-toggle {
    position: absolute;
    top: 50%;
    right: 8px;
    transform: translateY(-50%);
    border: 1px solid var(--line);
    background: var(--panel-soft);
    color: var(--text);
    padding: 7px 10px;
    border-radius: 10px;
    cursor: pointer;
}

.password-toggle:focus-visible,
.button:focus-visible,
.theme-option:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.password-toggle:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.button {
    width: 100%;
    border: 1px solid var(--button-border);
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
}

.button:disabled {
    cursor: not-allowed;
    opacity: 0.65;
}

.spinner {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
    display: none;
}

.quality-hidden {
    opacity: 0.55;
}

.quality-hidden select {
    pointer-events: none;
}

.summary-card {
    display: grid;
    grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
    gap: 20px;
    padding: 20px;
}

.preview-shell {
    position: relative;
    min-height: 240px;
    border-radius: 14px;
    overflow: hidden;
    background: var(--preview-bg);
    border: 1px solid var(--line);
}

.preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.preview-empty {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 24px;
    text-align: center;
    color: var(--text-soft);
    line-height: 1.55;
    background: var(--preview-empty-bg);
}

.summary-copy {
    display: grid;
    align-content: start;
    gap: 14px;
}

.status-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--panel-soft);
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
}

.status-chip.ok {
    border-color: #bbf7d0;
    background: var(--success-soft);
    color: var(--success);
}

.status-chip.warn {
    border-color: #fed7aa;
    background: var(--warning-soft);
    color: var(--warning);
}

.status-chip.bad {
    border-color: #fecaca;
    background: var(--danger-soft);
    color: var(--danger);
}

.summary-copy h2 {
    margin: 0;
    font-size: 24px;
    font-weight: 650;
    letter-spacing: -0.02em;
}

.summary-copy p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.6;
}

.detail-list {
    display: grid;
    border-top: 1px solid var(--line);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
}

.detail-row span {
    color: var(--text-soft);
}

.detail-row strong {
    text-align: right;
    word-break: break-word;
}

.terminal-card {
    padding: 20px;
}

.terminal-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.terminal-head h3 {
    margin: 0 0 4px;
    font-size: 16px;
}

.terminal-head p {
    margin: 0;
    color: var(--text-soft);
    font-size: 13px;
}

.progress-shell-compact {
    display: grid;
    gap: 8px;
    min-width: 180px;
    justify-items: end;
}

.progress-shell-compact span {
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
}

.progress-track {
    width: 180px;
    height: 8px;
    border-radius: 999px;
    background: var(--progress-track-bg);
    overflow: hidden;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: var(--accent);
    border-radius: inherit;
    transition: width 0.18s ease;
}

.terminal-output {
    min-height: 300px;
    max-height: 420px;
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--terminal-bg);
    padding: 14px 16px;
    font-family: Consolas, Monaco, monospace;
    font-size: 13px;
    line-height: 1.55;
}

.log-line {
    color: var(--terminal-text);
    padding: 8px 0;
    border-top: 1px solid var(--terminal-line);
    white-space: pre-wrap;
    word-break: break-word;
}

.log-line:first-child {
    border-top: none;
}

.log-line.info {
    color: var(--terminal-info);
}

.log-line.warning {
    color: var(--terminal-warning);
}

.log-line.error {
    color: var(--terminal-error);
}

.log-line.success {
    color: var(--terminal-success);
}

.download-link {
    display: inline-block;
    margin-top: 8px;
    color: var(--terminal-link);
    text-decoration: underline;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 1040px) {
    .app-header {
        flex-direction: column;
        align-items: stretch;
    }

    .theme-switcher {
        min-width: 0;
    }

    .app-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 720px) {
    body {
        padding: 16px;
    }

    .field-row {
        grid-template-columns: 1fr;
    }

    .terminal-head {
        flex-direction: column;
    }

    .progress-shell-compact {
        justify-items: start;
    }

    .progress-track {
        width: 100%;
        max-width: 220px;
    }
}