/* 으심대 번역기 */

:root {
    --accent: #FFC559;
    --accent-strong: #E9A92E;
    --accent-ink: #2A1E05;

    --bg: #FFFDF8;
    --surface: #FFFFFF;
    --surface-2: #F6F2E9;
    --ink: #1C1A16;
    --ink-muted: #6B6558;
    --line: #E7E1D4;
    --danger: #B3341F;

    --radius: 14px;
    --radius-sm: 9px;
    --shadow: 0 1px 2px rgb(28 26 22 / 6%), 0 6px 20px rgb(28 26 22 / 5%);

    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #141310;
        --surface: #1D1B16;
        --surface-2: #262319;
        --ink: #F3EFE6;
        --ink-muted: #9A9384;
        --line: #322E24;
        --danger: #FF9C86;

        --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 6px 20px rgb(0 0 0 / 25%);

        color-scheme: dark;
    }
}

/* 토글이 항상 이긴다 */
:root[data-theme="light"] {
    --bg: #FFFDF8;
    --surface: #FFFFFF;
    --surface-2: #F6F2E9;
    --ink: #1C1A16;
    --ink-muted: #6B6558;
    --line: #E7E1D4;
    --danger: #B3341F;
    --shadow: 0 1px 2px rgb(28 26 22 / 6%), 0 6px 20px rgb(28 26 22 / 5%);
    color-scheme: light;
}

:root[data-theme="dark"] {
    --bg: #141310;
    --surface: #1D1B16;
    --surface-2: #262319;
    --ink: #F3EFE6;
    --ink-muted: #9A9384;
    --line: #322E24;
    --danger: #FF9C86;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 6px 20px rgb(0 0 0 / 25%);
    color-scheme: dark;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
                 "Apple SD Gothic Neo", "Segoe UI", "Noto Sans KR", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-text-size-adjust: 100%;
    word-break: keep-all;
}

/* ---------- 머리 ---------- */

.topbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
    padding-top: max(14px, env(safe-area-inset-top));
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 10;
}

/* 로고 — 초성만 딴 ㅇㅅㄷ, 기울이고 밑줄 */
.brand {
    display: inline-block;
    text-decoration: none;
    color: var(--ink);
    font-style: italic;
    font-weight: 900;
    font-size: 1.26rem;
    letter-spacing: -0.04em;
    line-height: 1.2;
    padding-bottom: 3px;
    border-bottom: 3px solid var(--accent);
    transition: border-color 0.14s ease;
}

.brand:hover { border-bottom-color: var(--accent-strong); }
.brand-mark { color: var(--accent-strong); }

.theme-toggle {
    margin-left: auto;
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--surface);
    color: var(--ink-muted);
    cursor: pointer;
}

.theme-toggle:hover { color: var(--ink); border-color: var(--accent); }
.theme-toggle svg { grid-area: 1 / 1; }
.icon-moon { display: none; }

:root[data-theme="dark"] .icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: block; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .icon-sun { display: none; }
    :root:not([data-theme="light"]) .icon-moon { display: block; }
}

/* ---------- 뼈대 ---------- */

.wrap {
    max-width: 720px;
    margin: 0 auto;
    /* 위쪽 여백은 말풍선이 들어갈 자리를 남겨둔 것 */
    padding: 50px 20px 64px;
}

/* ---------- 쪽 전환 (제목 바로 위) ---------- */

.pagenav {
    display: inline-flex;
    gap: 3px;
    padding: 4px;
    margin-bottom: 20px;
    background: var(--surface-2);
    border-radius: 999px;
}

.pagenav a {
    position: relative;
    padding: 8px 20px;
    border-radius: 999px;
    text-decoration: none;
    color: var(--ink-muted);
    font-size: 0.92rem;
    font-weight: 700;
}

.pagenav a:not(.on):hover { color: var(--ink); }
.pagenav a.on { background: var(--accent); color: var(--accent-ink); }

/* 다른 쪽이 있다는 걸 알려주는 말풍선 */
.bubble {
    position: absolute;
    left: 50%;
    bottom: calc(100% + 11px);
    transform: translateX(-50%);
    white-space: nowrap;
    background: var(--ink);
    color: var(--bg);
    font-size: 0.75rem;
    font-weight: 700;
    font-style: italic;
    padding: 5px 11px;
    border-radius: 999px;
    pointer-events: none;
    animation: bob 1.9s ease-in-out infinite;
}

.bubble::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 100%;
    margin-left: -5px;
    border-top: 6px solid var(--ink);
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
}

@keyframes bob {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, -4px); }
}

/* 한 번 눌러봤으면 그만 조른다 */
.pagenav.quiet .bubble { display: none; }

.hero { margin-bottom: 24px; }

.hero h1 {
    margin: 0 0 6px;
    font-size: clamp(1.6rem, 5vw, 2.2rem);
    letter-spacing: -0.03em;
    line-height: 1.25;
}

.hero em {
    font-style: normal;
    background: linear-gradient(transparent 62%, var(--accent) 62%);
    padding: 0 2px;
}

.muted { color: var(--ink-muted); }

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

/* ---------- 입력 ---------- */

.field + .field { margin-top: 20px; }

.field-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 7px;
    gap: 10px;
}

.field-head label { font-size: 0.85rem; font-weight: 700; color: var(--ink-muted); }

.counter { font-size: 0.78rem; color: var(--ink-muted); font-variant-numeric: tabular-nums; }

textarea {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--ink);
    font: inherit;
    resize: vertical;
    min-height: 110px;
}

textarea:focus-visible {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 32%, transparent);
}

textarea::placeholder { color: color-mix(in srgb, var(--ink-muted) 65%, transparent); }

/* ---------- 조작부 ---------- */

.controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: 16px;
}

.seg {
    display: inline-flex;
    padding: 3px;
    gap: 2px;
    background: var(--surface-2);
    border-radius: 999px;
}

.seg.wide { width: 100%; margin-bottom: 18px; }
.seg.wide button { flex: 1; }

.seg button {
    border: 0;
    background: transparent;
    color: var(--ink-muted);
    padding: 7px 15px;
    border-radius: 999px;
    font: inherit;
    font-size: 0.87rem;
    font-weight: 600;
    cursor: pointer;
}

.seg button:hover { color: var(--ink); }
.seg button.on { background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }

:root[data-theme="dark"] .seg button.on { background: var(--accent); color: var(--accent-ink); }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .seg button.on { background: var(--accent); color: var(--accent-ink); }
}

.switch {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    cursor: pointer;
    font-size: 0.87rem;
    font-weight: 600;
    user-select: none;
}

.switch.disabled { cursor: not-allowed; opacity: 0.55; }
.switch input { position: absolute; opacity: 0; pointer-events: none; }

.track {
    width: 42px;
    height: 24px;
    border-radius: 999px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    padding: 2px;
    transition: background 0.16s ease;
}

.thumb {
    display: block;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--ink-muted);
    transition: transform 0.16s ease, background 0.16s ease;
}

.switch input:checked + .track { background: var(--accent); border-color: var(--accent-strong); }
.switch input:checked + .track .thumb { transform: translateX(18px); background: var(--accent-ink); }
.switch input:focus-visible + .track { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 32%, transparent); }

/* ---------- 단추 ---------- */

.actions { margin-top: 18px; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 11px 20px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.06s ease, filter 0.14s ease;
}

.btn:active { transform: translateY(1px); }

.btn.primary {
    width: 100%;
    background: var(--accent);
    color: var(--accent-ink);
    font-size: 1rem;
}

.btn.primary:hover { filter: brightness(1.05); }
.btn.primary[aria-busy="true"] { opacity: 0.7; pointer-events: none; }

.btn.ghost {
    background: var(--surface-2);
    color: var(--ink);
    border-color: var(--line);
    padding: 8px 14px;
    font-size: 0.85rem;
}

.btn.ghost:hover { border-color: var(--accent); }

/* ---------- 결과 ---------- */

.result { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }

.output {
    display: block;
    padding: 14px;
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    border: 1px solid var(--line);
    min-height: 60px;
    /* 공백 개수에 뜻이 있으므로 접히면 안 된다 */
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.cipher-output {
    font-size: 0.9rem;
    line-height: 1.75;
    letter-spacing: 0.01em;
    max-height: 340px;
    overflow-y: auto;
}

.badge {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 9px;
    border-radius: 999px;
    background: var(--accent);
    color: var(--accent-ink);
}

.result-actions { display: flex; gap: 8px; margin-top: 10px; }

.notice {
    margin: 14px 0 0;
    padding: 10px 13px;
    border-radius: var(--radius-sm);
    background: color-mix(in srgb, var(--accent) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
    font-size: 0.86rem;
}

.notice.error {
    background: color-mix(in srgb, var(--danger) 12%, transparent);
    border-color: color-mix(in srgb, var(--danger) 36%, transparent);
    color: var(--danger);
}

/* ---------- 예시 ---------- */

.examples {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    font-size: 0.85rem;
}

.examples button {
    border: 1px dashed var(--line);
    background: transparent;
    color: var(--ink-muted);
    padding: 5px 12px;
    border-radius: 999px;
    font: inherit;
    font-size: 0.85rem;
    cursor: pointer;
}

.examples button:hover { border-style: solid; border-color: var(--accent); color: var(--ink); }

/* ---------- 설명 ---------- */

.how {
    margin-top: 20px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    overflow: hidden;
}

.how summary {
    padding: 14px 18px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.92rem;
}

.how summary::marker { color: var(--accent-strong); }
.how-body { padding: 0 18px 16px; font-size: 0.9rem; }
.how-body p { margin: 0 0 10px; }

code {
    background: var(--surface-2);
    padding: 1px 6px;
    border-radius: 5px;
    font-size: 0.9em;
}

/* ---------- 꼬리 ---------- */

.foot {
    text-align: center;
    padding: 0 20px 40px;
    padding-bottom: max(40px, env(safe-area-inset-bottom));
    font-size: 0.82rem;
    color: var(--ink-muted);
}

.foot-line {
    margin: 0;
    line-height: 2;
    max-width: 720px;
    margin-inline: auto;
}

.foot-line a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
    text-decoration-color: var(--line);
}

.foot-line a:hover { color: var(--accent-strong); text-decoration-color: currentColor; }
.foot-line strong { color: var(--ink); font-weight: 700; font-variant-numeric: tabular-nums; }
.foot-line .sep { opacity: 0.3; margin: 0 3px; }

/* ---------- 알림 ---------- */

.toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    transform: translate(-50%, 16px);
    background: var(--ink);
    color: var(--bg);
    padding: 10px 18px;
    border-radius: 999px;
    font-size: 0.87rem;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
    z-index: 50;
}

.toast.on { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) {
    * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}