:root {
    --page-bg: #f3efe4;
    --page-bg-accent: radial-gradient(circle at top left, rgba(47, 141, 70, 0.18), transparent 28%),
        radial-gradient(circle at 85% 20%, rgba(255, 161, 22, 0.14), transparent 22%),
        linear-gradient(180deg, #f7f3e8 0%, #ece5d6 100%);
    --panel-bg: rgba(255, 252, 246, 0.88);
    --panel-border: rgba(30, 41, 59, 0.08);
    --text-strong: #162014;
    --text-muted: #536055;
    --accent: #2f8d46;
    --accent-strong: #226735;
    --accent-soft: rgba(47, 141, 70, 0.12);
    --secondary-bg: rgba(22, 32, 20, 0.04);
    --input-bg: rgba(255, 255, 255, 0.86);
    --shadow: 0 10px 22px rgba(29, 37, 29, 0.045);
    --code-bg: #152313;
    --code-text: #f1f8f0;
    --output-bg: linear-gradient(180deg, #f8fbf4 0%, #eff4ea 100%);
    --output-border: rgba(47, 141, 70, 0.14);
    --output-label: #69816b;
    --output-code: #16301d;
    --footer-link-bg: rgba(255, 255, 255, 0.7);
    --footer-link-border: rgba(22, 32, 20, 0.08);
    --toggle-row-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(246, 243, 236, 0.94) 100%);
    --toggle-track-bg: linear-gradient(180deg, #dfdfdf 0%, #cfcfcf 100%);
    --toggle-track-border: rgba(22, 32, 20, 0.12);
    --toggle-thumb-bg: linear-gradient(180deg, #ffffff 0%, #f3f3f3 100%);
    --toggle-on-bg: linear-gradient(180deg, #3b9f51 0%, #2f8d46 100%);
    --toggle-row-active: rgba(47, 141, 70, 0.08);
    --raw-preview-bg: linear-gradient(180deg, #fbfcf8 0%, #eef3ea 100%);
    --raw-preview-border: rgba(47, 141, 70, 0.12);
    --raw-preview-text: #17311e;
}

:root[data-theme="dark"] {
    --page-bg: #09110d;
    --page-bg-accent: radial-gradient(circle at top left, rgba(47, 141, 70, 0.32), transparent 28%),
        radial-gradient(circle at 85% 20%, rgba(255, 161, 22, 0.18), transparent 22%),
        linear-gradient(180deg, #0c1611 0%, #07100c 100%);
    --panel-bg: rgba(10, 18, 13, 0.78);
    --panel-border: rgba(214, 232, 219, 0.08);
    --text-strong: #edf6ee;
    --text-muted: #9fb2a2;
    --accent: #58b368;
    --accent-strong: #81d38d;
    --accent-soft: rgba(88, 179, 104, 0.16);
    --secondary-bg: rgba(255, 255, 255, 0.05);
    --input-bg: rgba(255, 255, 255, 0.04);
    --shadow: 0 12px 24px rgba(0, 0, 0, 0.16);
    --code-bg: #050b08;
    --code-text: #ddf0df;
    --output-bg: linear-gradient(180deg, rgba(11, 24, 14, 0.96) 0%, rgba(13, 31, 16, 0.96) 100%);
    --output-border: rgba(88, 179, 104, 0.14);
    --output-label: rgba(221, 240, 223, 0.62);
    --output-code: #eff9ef;
    --footer-link-bg: rgba(255, 255, 255, 0.04);
    --footer-link-border: rgba(214, 232, 219, 0.08);
    --toggle-row-bg: rgba(255, 255, 255, 0.04);
    --toggle-track-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.14) 0%, rgba(255, 255, 255, 0.08) 100%);
    --toggle-track-border: rgba(214, 232, 219, 0.1);
    --toggle-thumb-bg: linear-gradient(180deg, #ffffff 0%, #e8efe9 100%);
    --toggle-on-bg: linear-gradient(180deg, #63bf74 0%, #4aa85c 100%);
    --toggle-row-active: rgba(88, 179, 104, 0.12);
    --raw-preview-bg: var(--code-bg);
    --raw-preview-border: transparent;
    --raw-preview-text: var(--code-text);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    width: 100%;
    overflow-x: hidden;
}

body {
    font-family: "Space Grotesk", sans-serif;
    color: var(--text-strong);
    background: var(--page-bg-accent);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 85%);
}

.page-shell {
    width: min(1180px, 100%);
    margin: 0 auto;
    padding-inline: 16px;
    padding: 40px 0 28px;
    overflow-x: clip;
}

.hero {
    margin-bottom: 28px;
}

.hero-copy {
    position: relative;
    padding: 28px;
    border: 1px solid transparent;
    background: var(--panel-bg);
    background-clip: padding-box;
    backdrop-filter: blur(18px);
    box-shadow: inset 0 0 0 1px var(--panel-border), var(--shadow);
    border-radius: 28px;
    overflow: hidden;
    max-width: 100%;
}

.brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand-mark {
    display: block;
    width: 88px;
    height: 40px;
    object-fit: contain;
    object-position: left center;
    flex: 0 0 auto;
    margin-top: 0;
}

.theme-toggle {
    border: 1px solid var(--panel-border);
    background: var(--secondary-bg);
    color: var(--text-strong);
    border-radius: 999px;
    padding: 10px 16px;
    font: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    line-height: 1;
}

.theme-toggle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-soft);
    flex: 0 0 32px;
    line-height: 0;
}

.theme-toggle-icon svg {
    width: 16px;
    height: 16px;
    display: block;
}

.eyebrow {
    margin: 22px 0 8px;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 700;
}

h1 {
    margin: 0;
    font-size: clamp(2.8rem, 6vw, 5rem);
    line-height: 0.96;
    max-width: 10ch;
}

.lead {
    max-width: 58ch;
    margin: 18px 0 0;
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.65;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.hero-meta span {
    padding: 9px 14px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--text-strong);
    font-size: 0.9rem;
}

.layout {
    display: grid;
    grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
    gap: 22px;
    min-width: 0;
}

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

.panel {
    position: relative;
    border: 1px solid transparent;
    background: var(--panel-bg);
    background-clip: padding-box;
    backdrop-filter: blur(18px);
    box-shadow: inset 0 0 0 1px var(--panel-border), var(--shadow);
    border-radius: 28px;
    overflow: hidden;
    padding: 24px;
    max-width: 100%;
}

.panel-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.panel-header p {
    margin: 8px 0 0;
    color: var(--text-muted);
    line-height: 1.55;
}

.controls-panel {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field span {
    font-size: 0.92rem;
    color: var(--text-muted);
}

input,
select,
button {
    font: inherit;
}

input,
select {
    width: 100%;
    border-radius: 18px;
    border: 1px solid var(--panel-border);
    background: var(--input-bg);
    color: var(--text-strong);
    padding: 15px 16px;
    outline: none;
}

select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding-right: 48px;
    cursor: pointer;
}

.select-wrap {
    position: relative;
}

.select-wrap::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 18px;
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: translateY(-70%) rotate(45deg);
    pointer-events: none;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.select-wrap::before {
    content: "";
    position: absolute;
    top: 10px;
    right: 44px;
    bottom: 10px;
    width: 1px;
    background: var(--panel-border);
    pointer-events: none;
}

input:focus,
select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-soft);
}

.select-wrap:focus-within::after {
    border-color: var(--accent);
    transform: translateY(-58%) rotate(45deg);
}

.field-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.checkbox-field {
    justify-content: flex-end;
}

.toggle-row {
    min-height: 56px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 14px;
    border-radius: 18px;
    border: 1px solid var(--panel-border);
    background: var(--toggle-row-bg);
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.toggle-row:has(#raw:checked) {
    border-color: var(--output-border);
    background: linear-gradient(180deg, var(--toggle-row-active) 0%, var(--toggle-row-bg) 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.toggle-row input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.toggle-switch {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    width: 52px;
    flex: 0 0 52px;
    cursor: pointer;
}

.toggle-ui {
    width: 52px;
    height: 30px;
    border-radius: 999px;
    background: var(--toggle-track-bg);
    position: relative;
    border: 1px solid var(--toggle-track-border);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.08);
    transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.toggle-ui::after {
    content: "";
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    background: var(--toggle-thumb-bg);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
    transition: transform 0.2s ease, background 0.2s ease;
}

#raw:focus + .toggle-switch .toggle-ui {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-soft), inset 0 1px 1px rgba(0, 0, 0, 0.08);
}

#raw:checked + .toggle-switch .toggle-ui {
    background: var(--toggle-on-bg);
    border-color: transparent;
}

#raw:checked + .toggle-switch .toggle-ui::after {
    transform: translateX(22px);
}

.toggle-copy {
    color: var(--text-strong);
    line-height: 1.25;
    cursor: default;
    font-weight: 500;
}

.actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

button {
    border: 0;
    border-radius: 18px;
    padding: 14px 16px;
    cursor: pointer;
    transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}

button:hover {
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

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

.primary:hover {
    background: var(--accent-strong);
}

.secondary {
    background: var(--secondary-bg);
    color: var(--text-strong);
    border: 1px solid var(--panel-border);
}

.output-box {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px 18px;
    border-radius: 22px;
    background: var(--output-bg);
    border: 1px solid var(--output-border);
    color: var(--output-code);
    min-height: 92px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.output-box span {
    color: var(--output-label);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.output-box code {
    word-break: break-all;
    line-height: 1.5;
    font-size: 0.96rem;
}

.preview-frame {
    min-height: 420px;
    display: grid;
    place-items: center;
    padding: 18px;
    border-radius: 22px;
    background:
        linear-gradient(135deg, rgba(47, 141, 70, 0.08), transparent 40%),
        linear-gradient(315deg, rgba(255, 161, 22, 0.08), transparent 28%),
        var(--secondary-bg);
    overflow: auto;
    max-width: 100%;
}

.preview-frame img {
    width: min(100%, 500px);
    max-width: 500px;
    display: block;
}

.preview-frame pre {
    width: 100%;
    margin: 0;
    padding: 18px;
    border-radius: 18px;
    background: var(--raw-preview-bg);
    border: 1px solid var(--raw-preview-border);
    color: var(--raw-preview-text);
    overflow: auto;
    line-height: 1.55;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] .preview-frame pre {
    background: var(--code-bg);
    border: 0;
    color: var(--code-text);
    box-shadow: none;
}

.loader {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    border: 4px solid rgba(127, 127, 127, 0.2);
    border-top-color: var(--accent);
    animation: spin 0.85s linear infinite;
}

.footer-bar {
    grid-column: 1 / -1;
    padding: 4px 0 0;
    display: flex;
    justify-content: center;
}

.footer-bar a {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 18px;
    background: var(--footer-link-bg);
    border: 1px solid var(--footer-link-border);
    color: var(--text-strong);
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.04);
    transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
    min-width: 340px;
    max-width: 100%;
}

.footer-bar a:hover {
    transform: translateY(-1px);
    border-color: var(--output-border);
}

.footer-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: linear-gradient(180deg, rgba(47, 141, 70, 0.16) 0%, rgba(255, 161, 22, 0.1) 100%);
    color: var(--text-strong);
    flex: 0 0 42px;
}

.footer-icon svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
}

.footer-copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.footer-copy strong {
    font-size: 1rem;
    font-weight: 700;
}

.footer-copy small {
    color: var(--text-muted);
    font-size: 0.88rem;
}

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

@media (max-width: 900px) {
    .layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(1180px, 100%);
        padding-inline: 16px;
        padding: 16px 0 24px;
    }

    .hero-copy,
    .panel {
        border-radius: 22px;
        padding: 18px;
    }

    .brand-row {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
    }

    .brand-row img {
        width: 78px;
        height: 36px;
        margin-top: 0;
    }

    .theme-toggle {
        padding: 9px 14px;
        font-size: 0.95rem;
        margin-left: auto;
    }

    .theme-toggle-icon {
        width: 30px;
        height: 30px;
        flex-basis: 30px;
    }

    .theme-toggle-icon svg {
        width: 15px;
        height: 15px;
    }

    .eyebrow {
        margin-top: 18px;
        font-size: 0.76rem;
        letter-spacing: 0.1em;
    }

    h1 {
        font-size: clamp(2rem, 12vw, 3.2rem);
        line-height: 0.98;
        max-width: 100%;
        overflow-wrap: anywhere;
        word-break: break-word;
    }

    .lead {
        margin-top: 16px;
        font-size: 1rem;
        line-height: 1.6;
    }

    .hero-meta {
        gap: 8px;
        margin-top: 18px;
    }

    .hero-meta span {
        font-size: 0.88rem;
        padding: 8px 12px;
    }

    .controls-panel,
    .preview-panel {
        gap: 16px;
    }

    .layout {
        gap: 16px;
    }

    .panel-header h2 {
        font-size: 1.18rem;
    }

    .panel-header p {
        font-size: 0.98rem;
    }

    .toggle-row,
    input,
    select,
    button {
        min-height: 54px;
    }

    .output-box {
        padding: 14px 16px;
        min-height: 84px;
    }

    .output-box code {
        font-size: 0.92rem;
    }

    .preview-frame {
        min-height: 260px;
        padding: 12px;
        border-radius: 18px;
    }

    .preview-frame pre {
        padding: 14px;
        font-size: 0.9rem;
    }

    .footer-bar {
        padding-top: 10px;
    }

    .footer-bar a {
        width: 100%;
        min-width: 0;
        padding: 12px 14px;
        gap: 12px;
    }

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

@media (max-width: 420px) {
    .page-shell {
        width: min(1180px, 100%);
        padding-inline: 14px;
    }

    .hero-copy,
    .panel {
        padding: 16px;
        border-radius: 20px;
    }

    .theme-toggle {
        margin-left: 0;
    }

    .layout {
        gap: 14px;
    }

    h1 {
        font-size: clamp(1.8rem, 11vw, 2.6rem);
        max-width: 100%;
    }

    .lead {
        font-size: 0.98rem;
    }

    .hero-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-meta span {
        width: 100%;
        text-align: center;
    }

    .footer-copy small {
        font-size: 0.82rem;
    }
}