:root {
    --secret-panel: color-mix(in srgb, var(--bg) 94%, var(--text));
    --secret-panel-raised: color-mix(in srgb, var(--bg) 88%, var(--text));
    --secret-line: color-mix(in srgb, var(--text) 38%, transparent);
    --secret-line-soft: color-mix(in srgb, var(--text) 20%, transparent);
    --secret-muted: color-mix(in srgb, var(--text) 68%, var(--bg));
}

.secret-page,
.secret-page *,
.secret-page *::before,
.secret-page *::after {
    box-sizing: border-box;
}

.secret-document,
.secret-page {
    min-height: 100%;
}

.secret-page {
    min-height: 100vh;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 50% 12%, color-mix(in srgb, var(--text) 8%, transparent), transparent 34rem),
        var(--bg);
}

.secret-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr) 48px;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    min-height: 58px;
    padding: 0.7rem 1.25rem;
    border-bottom: 1px solid var(--secret-line);
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(12px);
}

.secret-header > .theme-toggle:first-child {
    grid-column: 1;
}

.secret-header > .theme-toggle:last-child {
    grid-column: 3;
}

.secret-header .theme-toggle {
    justify-self: center;
}

.secret-header-title {
    display: flex;
    min-width: 0;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
    text-align: center;
}

.secret-header-title h1 {
    margin: 0;
    color: var(--text);
    font-family: "Courier Prime", "Courier New", monospace;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    line-height: 1;
}

.secret-header-kicker {
    color: var(--text-alt);
    font-family: "Space Mono", "Courier New", monospace;
    font-size: 0.55rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.secret-header-caret {
    color: var(--text-alt);
    animation: secretCaret 1.15s steps(2, end) infinite;
}

.secret-main {
    display: grid;
    min-height: calc(100vh - 58px);
    place-items: center;
    padding: clamp(1.5rem, 5vh, 4rem) clamp(1rem, 4vw, 3rem);
}

.secret-shell {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
    width: min(920px, 100%);
    border: 1px solid var(--secret-line);
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--text) 5%, transparent), transparent 52%),
        var(--secret-panel);
    box-shadow:
        0 0 30px color-mix(in srgb, var(--text) 10%, transparent),
        inset 0 0 24px color-mix(in srgb, var(--text) 3%, transparent);
}

.secret-shell::before,
.secret-shell::after {
    position: absolute;
    z-index: 1;
    width: 22px;
    height: 22px;
    content: "";
    pointer-events: none;
}

.secret-shell::before {
    top: -1px;
    left: -1px;
    border-top: 2px solid var(--text);
    border-left: 2px solid var(--text);
}

.secret-shell::after {
    right: -1px;
    bottom: -1px;
    border-right: 2px solid var(--text);
    border-bottom: 2px solid var(--text);
}

.secret-visual,
.secret-form-panel {
    position: relative;
    min-width: 0;
    padding: clamp(1.25rem, 3vw, 2.5rem);
}

.secret-visual {
    display: flex;
    min-height: 520px;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid var(--secret-line);
}

.secret-form-panel {
    display: flex;
    min-height: 520px;
    flex-direction: column;
    justify-content: center;
}

.secret-panel-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px dashed var(--secret-line);
    color: var(--text-alt);
    font-family: "Space Mono", "Courier New", monospace;
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.secret-panel-state {
    color: var(--text);
}

.secret-art-frame {
    display: flex;
    min-height: 0;
    flex: 1;
    align-items: center;
    justify-content: center;
    margin: 1.5rem 0;
    overflow: hidden;
    border-top: 1px dashed var(--secret-line-soft);
    border-bottom: 1px dashed var(--secret-line-soft);
    background: radial-gradient(circle, color-mix(in srgb, var(--text) 6%, transparent), transparent 68%);
}

.secret-art {
    width: 100%;
    max-width: 100%;
    margin: 0;
    overflow: hidden;
    color: var(--text-alt);
    font-family: "Space Mono", "Courier New", monospace;
    font-size: clamp(7px, 0.48vw, 5px);
    line-height: 0.94;
    letter-spacing: -0.04em;
    text-align: center;
    text-shadow: 0 0 8px color-mix(in srgb, var(--text) 18%, transparent);
    user-select: none;
    white-space: pre;
}

.secret-visual-meta {
    display: grid;
    gap: 0.7rem;
}

.secret-visual-meta div,
.secret-form-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.secret-visual-meta div {
    padding-bottom: 0.4rem;
    border-bottom: 1px dashed var(--secret-line-soft);
}

.secret-visual-meta span,
.secret-visual-meta strong,
.secret-form-footer,
.secret-hint {
    font-family: "Space Mono", "Courier New", monospace;
    font-size: 0.57rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.secret-visual-meta span,
.secret-hint,
.secret-form-footer {
    color: var(--secret-muted);
}

.secret-visual-meta strong {
    color: var(--text);
    font-weight: 400;
    text-align: right;
}

.secret-form-copy {
    max-width: 34rem;
}

.secret-kicker {
    margin: 0 0 0.8rem;
    color: var(--text-alt);
    font-family: "Space Mono", "Courier New", monospace;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.secret-form-copy h2 {
    margin: 0;
    color: var(--text);
    font-family: "Courier Prime", "Courier New", monospace;
    font-size: clamp(1.8rem, 4vw, 3rem);
    letter-spacing: -0.06em;
    line-height: 0.98;
    text-shadow: 0 0 16px color-mix(in srgb, var(--text) 20%, transparent);
}

.secret-lede {
    max-width: 30ch;
    margin: 1rem 0 0;
    color: var(--secret-muted);
    font-size: 0.78rem;
    line-height: 1.8;
}

.secret-form-group {
    margin-top: clamp(2rem, 7vh, 4rem);
}

.secret-form-group label {
    display: block;
    margin-bottom: 0.45rem;
    color: var(--text);
    font-family: "Space Mono", "Courier New", monospace;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.secret-input-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.6rem;
}

#secret-code-input,
#submit-secret-code {
    min-height: 42px;
    border: 1px solid var(--secret-line);
    border-radius: 0;
    font-family: "Space Mono", "Courier New", monospace;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s;
}

#secret-code-input {
    width: 100%;
    padding: 0.65rem 0.75rem;
    background: color-mix(in srgb, var(--bg) 88%, var(--text)) !important;
    color: var(--text);
    caret-color: var(--text);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
}

#secret-code-input::placeholder {
    color: var(--secret-muted);
    opacity: 0.7;
}

#secret-code-input:focus,
#submit-secret-code:focus-visible {
    border-color: var(--text);
    box-shadow: 0 0 14px color-mix(in srgb, var(--text) 24%, transparent), inset 0 0 8px color-mix(in srgb, var(--text) 8%, transparent);
}

#submit-secret-code {
    padding: 0.65rem 1rem;
    background: transparent;
    color: var(--text);
    cursor: pointer;
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

#submit-secret-code:hover,
#submit-secret-code:focus-visible {
    background: var(--text);
    color: var(--bg);
    outline: none;
}

.secret-hint {
    margin: 0.55rem 0 0;
    line-height: 1.5;
    text-transform: none;
}

#code-message {
    min-height: 2rem;
    margin-top: 1.25rem;
    color: var(--text);
    font-size: 0.72rem;
    line-height: 1.6;
}

#code-message.success {
    color: var(--text);
}

#code-message.error {
    color: #ff7777;
}

.secret-form-footer {
    margin-top: auto;
    padding-top: 1.25rem;
    border-top: 1px dashed var(--secret-line-soft);
}

.us-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    width: 100%;
}

.us-image {
    width: min(100%, 320px);
    max-height: 260px;
    border: 1px solid var(--secret-line);
    object-fit: cover;
    box-shadow: 0 0 16px color-mix(in srgb, var(--text) 14%, transparent);
}

.us-text,
.us-pink {
    margin: 0;
    font-family: "Courier Prime", "Courier New", monospace;
    line-height: 1.5;
}

.us-text {
    color: var(--text);
    font-size: 0.86rem;
}

.us-pink {
    color: #ff8bc1 !important;
    font-size: 0.94rem;
    font-weight: 700;
    text-shadow: 0 0 8px rgba(255, 105, 180, 0.35);
}

.embed-wrapper {
    width: 100%;
    max-width: 100%;
    margin-top: 0.5rem;
    overflow: hidden;
}

.embed-wrapper iframe {
    display: block;
    width: 100% !important;
    max-width: 100%;
}

@keyframes secretCaret {
    0%,
    45% {
        opacity: 1;
    }

    46%,
    100% {
        opacity: 0.2;
    }
}

@media (max-width: 760px) {
    .secret-document,
    .secret-page {
        min-height: 100%;
        overflow-x: hidden;
        overflow-y: auto !important;
    }

    .secret-header {
        grid-template-columns: 40px minmax(0, 1fr) 40px;
        padding: 0.7rem 0.8rem;
    }

    .secret-header-kicker {
        display: none;
    }

    .secret-header-title h1 {
        font-size: 0.78rem;
    }

    .secret-main {
        min-height: calc(100vh - 58px);
        align-items: start;
        padding: 1.25rem 0.8rem 2.5rem;
    }

    .secret-shell {
        grid-template-columns: 1fr;
    }

    .secret-visual,
    .secret-form-panel {
        min-height: 0;
    }

    .secret-visual {
        min-height: 310px;
        border-right: 0;
        border-bottom: 1px solid var(--secret-line);
    }

    .secret-art {
        font-size: clamp(2px, 1.1vw, 4px);
    }

    .secret-form-panel {
        padding-top: 2rem;
        padding-bottom: 2rem;
    }
}

@media (max-width: 460px) {
    .secret-input-row {
        grid-template-columns: 1fr;
    }

    #submit-secret-code {
        justify-self: start;
    }

    .secret-panel-bar,
    .secret-visual-meta span,
    .secret-visual-meta strong,
    .secret-form-footer,
    .secret-hint {
        font-size: 0.52rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .secret-header-caret,
    #secret-code-input,
    #submit-secret-code {
        animation: none;
        transition: none;
    }
}