@import url('https://fonts.googleapis.com/css2?family=Alice&family=Space+Mono&display=swap');

:root {
    --font-heading: "Gabrelia", "Alice", serif;
    --font-body: "Alice", serif;
    --font-mono: "Space Mono", monospace;
    --bg-color: #fcfbfa;
    --bg-wash: #f6f1ec;
    --surface-color: rgba(255, 252, 248, 0.72);
    --surface-strong: rgba(255, 251, 247, 0.88);
    --text-main: #5f4d58;
    --text-soft: #75646b;
    --accent-orchid: #6e4c58;
    --accent-muted: #93818a;
    --btn-bg: rgba(215, 205, 210, 0.32);
    --border-color: rgba(150, 128, 137, 0.22);
    --shadow-soft: 0 24px 60px rgba(110, 76, 88, 0.08);
    --shadow-button: 0 6px 16px rgba(110, 76, 88, 0.06);
}

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

body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.92), transparent 32%),
        linear-gradient(180deg, #fffdfa 0%, var(--bg-color) 48%, var(--bg-wash) 100%);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    padding: 3.5rem 1.5rem 4.5rem;
    transition: background-color 0.4s ease, color 0.4s ease;
}

.page-shell {
    max-width: 920px;
    margin: 0 auto;
}

.hero {
    max-width: 34rem;
    margin-bottom: 3.4rem;
    padding-top: 0.6rem;
}

.eyebrow {
    font-family: var(--font-body);
    font-size: 0.78rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--accent-muted);
    margin-bottom: 0.9rem;
}

h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.9rem, 6.4vw, 4.9rem);
    font-weight: normal;
    color: var(--accent-orchid);
    line-height: 1.55;
    letter-spacing: -0.04em;
    margin-bottom: 1.25rem;
}

.sub-title {
    font-family: var(--font-body);
    font-size: clamp(1.15rem, 2.2vw, 1.55rem);
    color: var(--text-main);
    font-style: italic;
    max-width: 32rem;
}

.cipher-card {
    border: 1px solid var(--border-color);
    border-radius: 1.75rem;
    background: var(--surface-color);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(10px);
    overflow: hidden;
}

footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    border-top: 1px solid rgba(181, 168, 159, 0.34);
    margin-top: 7.5rem;
    padding-top: 2.9rem;
    padding-bottom: 1.25rem;
    width: 100%;
    color: #6b625b;
    font-size: 0.7rem;
}

footer p {
    margin: 0;
    line-height: 1.5;
    text-align: center;
}

footer a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid #9c8e8c;
    padding-bottom: 2px;
    transition: border-bottom-color 0.3s ease;
}

footer a:hover {
    border-bottom-color: #4a423e;
}

.mus-signature {
    width: 25px;
    height: auto;
    max-width: 100%;
    opacity: 0.8;
    margin-bottom: 0.65rem;
    transition: all 0.3s ease;
}

.mus-signature:hover {
    opacity: 1;
    transform: scale(1.05);
}

.card-frame {
    margin: 1.3rem;
    padding: 1.5rem;
    border: 1px solid rgba(150, 128, 137, 0.14);
    border-radius: 1.3rem;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.62), rgba(246, 239, 232, 0.5)),
        var(--surface-strong);
}

.card-intro {
    margin-bottom: 1.75rem;
}

.section-label,
label {
    font-family: var(--font-body);
    font-size: 0.82rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent-muted);
}

.section-label {
    margin-bottom: 0.6rem;
}

.section-copy {
    max-width: 34rem;
    font-size: 1.08rem;
    color: var(--text-soft);
}

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.75rem;
}

textarea {
    width: 100%;
    background: rgba(255, 251, 247, 0.58);
    color: var(--text-main);
    caret-color: rgba(120, 90, 110, 0.45);
    padding: 1.15rem 1.2rem;
    border-radius: 1rem;
    border: 1px solid rgba(150, 128, 137, 0.18);
    outline: none;
    resize: vertical;
    transition: border-color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
    font-family: var(--font-body);
}

#inputText {
    font-size: 1.08rem;
    line-height: 1.8;
    min-height: 180px;
}

#inputText:focus,
#outputText:focus {
    border-color: rgba(110, 76, 88, 0.42);
    background-color: rgba(255, 253, 250, 0.9);
    box-shadow: 0 0 0 4px rgba(110, 76, 88, 0.06);
}

.action-buttons {
    display: flex;
    gap: 0.9rem;
    margin-bottom: 1.8rem;
    flex-wrap: wrap;
}

button {
    font-family: var(--font-body);
    font-size: 1rem;
    background-color: var(--btn-bg);
    color: var(--text-main);
    border: 1px solid rgba(150, 128, 137, 0.18);
    padding: 0.8rem 1.35rem;
    min-width: 180px;
    border-radius: 999px;
    box-shadow: var(--shadow-button);
    cursor: pointer;
    transition: transform 0.25s ease, background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

button:hover {
    background-color: rgba(110, 76, 88, 0.88);
    border-color: rgba(110, 76, 88, 0.9);
    box-shadow: 0 10px 22px rgba(110, 76, 88, 0.1);
    color: #fffaf6;
    transform: translateY(-1px);
}

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

.output-group {
    padding-top: 1.4rem;
    border-top: 1px solid rgba(150, 128, 137, 0.16);
}

.output-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.output-head label {
    margin-bottom: 0;
}

#outputLabel {
    color: var(--accent-muted);
}

.copy-button {
    padding: 0.5rem 1rem;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background-color: rgba(215, 205, 210, 0.22);
    box-shadow: none;
    flex-shrink: 0;
}

.copy-button:hover {
    background-color: rgba(110, 76, 88, 0.78);
    box-shadow: 0 8px 18px rgba(110, 76, 88, 0.08);
}

#outputText {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--accent-orchid);
    letter-spacing: 0.12em;
    line-height: 1.9;
    min-height: 120px;
    text-shadow: 0 0 10px rgba(110, 76, 88, 0.05);
    background:
        linear-gradient(
            180deg,
            rgba(255,255,255,0.28),
            rgba(245,240,238,0.45)
        );
}

::placeholder {
    font-family: var(--font-body);
    color: var(--text-soft);
    opacity: 0.62;
    font-style: italic;
    letter-spacing: normal;
}

@media (max-width: 640px) {
    body {
        padding: 2rem 1rem 3rem;
    }

    .hero {
        margin-bottom: 2.2rem;
        padding-top: 0;
    }

    .card-frame {
        margin: 0.85rem;
        padding: 1.1rem;
    }

    .section-copy,
    .sub-title {
        font-size: 1rem;
    }

    .action-buttons {
        flex-direction: column;
    }

    button {
        width: min(100%,320px);
        align-self: center;
    }

    .output-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .copy-button {
        width: auto;
    }

    footer {
        width: 100%;
        margin-top: 5rem;
        padding-top: 2.2rem;
        padding-bottom: 1rem;
    }

    footer p {
        font-size: 0.82rem;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1b1819;
        --bg-wash: #231f21;
        --surface-color: rgba(36, 30, 33, 0.76);
        --surface-strong: rgba(41, 34, 37, 0.92);
        --text-main: #dfd5d3;
        --text-soft: #c0b1b3;
        --accent-orchid: #e1b2c0;
        --accent-muted: #b99ea7;
        --btn-bg: rgba(85, 68, 76, 0.42);
        --border-color: rgba(221, 190, 198, 0.16);
        --shadow-soft: 0 24px 60px rgba(0, 0, 0, 0.24);
        --shadow-button: 0 8px 18px rgba(0, 0, 0, 0.18);
    }

    textarea {
        background: rgba(29, 25, 27, 0.68);
    }

    #inputText:focus,
    #outputText:focus {
        background-color: rgba(39, 33, 36, 0.92);
        box-shadow: 0 0 0 4px rgba(225, 178, 192, 0.08);
    }

    button:hover {
        color: #1f191b;
        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.24);
    }

    footer {
        border-top-color: rgba(96, 84, 90, 0.32);
    }
}

/* --- MuS Custom Cursor --- */
:root {
    --mus-cursor-dot: #7f9789;
    --mus-cursor-ring: rgba(127, 151, 137, 0.22);
    --mus-cursor-hover: rgba(166, 132, 150, 0.28);
    --mus-cursor-shadow: rgba(127, 151, 137, 0.16);
    --mus-cursor-dot-size: 8px;
    --mus-cursor-ring-size: 28px;
    --mus-cursor-ring-size-hover: 42px;
}

.dark,
:root[data-theme="dark"] {
    --mus-cursor-dot: #c8a9b8;
    --mus-cursor-ring: rgba(200, 169, 184, 0.18);
    --mus-cursor-hover: rgba(200, 169, 184, 0.26);
    --mus-cursor-shadow: rgba(200, 169, 184, 0.14);
}

.mus-cursor-dot,
.mus-cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    contain: layout style paint;
    will-change: transform, opacity, width, height, box-shadow, background-color, border-color;
    transition:
        opacity 0.18s ease,
        width 0.2s ease,
        height 0.2s ease,
        background-color 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.mus-cursor-dot.is-visible,
.mus-cursor-ring.is-visible {
    opacity: 1;
}

.mus-cursor-dot {
    width: var(--mus-cursor-dot-size);
    height: var(--mus-cursor-dot-size);
    border-radius: 999px;
    background: var(--mus-cursor-dot);
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--mus-cursor-dot) 22%, transparent);
    --mus-cursor-dot-scale: 1;
}

.mus-cursor-ring {
    width: var(--mus-cursor-ring-size);
    height: var(--mus-cursor-ring-size);
    border: 1px solid var(--mus-cursor-ring);
    border-radius: 999px;
    background: color-mix(in srgb, var(--mus-cursor-ring) 60%, transparent);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.04), 0 0 18px var(--mus-cursor-shadow);
    backdrop-filter: blur(2px);
    --mus-cursor-ring-scale: 1;
}

.mus-cursor-dot.mus-cursor-hover {
    opacity: 0.76;
    --mus-cursor-dot-scale: 0.82;
}

.mus-cursor-ring.mus-cursor-hover {
    width: var(--mus-cursor-ring-size-hover);
    height: var(--mus-cursor-ring-size-hover);
    border-color: var(--mus-cursor-hover);
    background: color-mix(in srgb, var(--mus-cursor-hover) 52%, transparent);
    box-shadow:
        0 0 0 1px color-mix(in srgb, var(--mus-cursor-hover) 34%, transparent),
        0 0 24px color-mix(in srgb, var(--mus-cursor-hover) 44%, transparent);
}

.mus-cursor-dot.mus-cursor-click {
    background: color-mix(in srgb, var(--mus-cursor-dot) 86%, white 14%);
    --mus-cursor-dot-scale: 0.94;
}

.mus-cursor-ring.mus-cursor-click {
    border-color: color-mix(in srgb, var(--mus-cursor-hover) 82%, white 18%);
    background: color-mix(in srgb, var(--mus-cursor-hover) 66%, transparent);
    box-shadow:
        0 0 0 10px color-mix(in srgb, var(--mus-cursor-hover) 12%, transparent),
        0 0 28px color-mix(in srgb, var(--mus-cursor-hover) 38%, transparent);
    --mus-cursor-ring-scale: 0.82;
}

.mus-custom-cursor-enabled,
.mus-custom-cursor-enabled * {
    cursor: none;
}

.mus-custom-cursor-enabled.mus-cursor-over-text,
.mus-custom-cursor-enabled.mus-cursor-over-text body,
.mus-custom-cursor-enabled.mus-cursor-over-text input,
.mus-custom-cursor-enabled.mus-cursor-over-text textarea,
.mus-custom-cursor-enabled.mus-cursor-over-text select,
.mus-custom-cursor-enabled.mus-cursor-over-text option,
.mus-custom-cursor-enabled.mus-cursor-over-text code,
.mus-custom-cursor-enabled.mus-cursor-over-text pre,
.mus-custom-cursor-enabled.mus-cursor-over-text .highlight,
.mus-custom-cursor-enabled.mus-cursor-over-text .post-content p,
.mus-custom-cursor-enabled.mus-cursor-over-text .post-content li,
.mus-custom-cursor-enabled.mus-cursor-over-text .post-content blockquote,
.mus-custom-cursor-enabled.mus-cursor-over-text .entry-content p,
.mus-custom-cursor-enabled.mus-cursor-over-text .entry-content li,
.mus-custom-cursor-enabled.mus-cursor-over-text .entry-content blockquote {
    cursor: text;
}

@media (prefers-reduced-motion: reduce) {
    .mus-cursor-dot,
    .mus-cursor-ring {
        display: none !important;
    }

    .mus-custom-cursor-enabled,
    .mus-custom-cursor-enabled * {
        cursor: auto !important;
    }
}

@media (hover: none), (pointer: coarse) {
    .mus-cursor-dot,
    .mus-cursor-ring {
        display: none !important;
    }
}