/* ==========================================================================
   Murder at the Prompt — "Golden Age whodunit" theme
   A warm, printed-page aesthetic in the tradition of the 1920s–30s parlour
   mystery: ivory paper, sepia ink, deep oxblood and brass accents, elegant
   serif type and Art Deco double rules. color-scheme:light is set so native
   UI (scrollbars, form fields on the login page) renders light to match.
   ========================================================================== */

:root {
    color-scheme: light;

    --paper:      #f4ead2;   /* aged ivory page */
    --paper-soft: #eaddbf;   /* slightly deeper panel */
    --ink:        #20180f;   /* sepia-black ink */
    --ink-dim:    #6f5f49;   /* faded ink */
    --rule:       #c8b083;   /* aged hairline */
    --rule-soft:  #d8c8a4;
    --oxblood:    #7c1f1f;   /* deep burgundy, used for emphasis */
    --oxblood-dk: #5c1717;
    --brass:      #9a7426;   /* antique gold */
    --danger:     #8c1c1c;

    --serif:   "Spectral", Georgia, "Times New Roman", Times, serif;
    --display: "Playfair Display", Georgia, "Times New Roman", Times, serif;
}

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

body {
    font-family: var(--serif);
    font-size: 1.02rem;
    line-height: 1.7;
    color: var(--ink);
    background-color: var(--paper);
    /* faint paper grain + warm vignette */
    background-image:
        radial-gradient(120% 80% at 50% -10%, rgba(255,248,230,0.6), transparent 60%),
        radial-gradient(140% 120% at 50% 120%, rgba(92,23,23,0.05), transparent 55%);
    min-height: 100vh;   /* fallback */
    min-height: 100svh;  /* mobile dynamic viewport */
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

:focus-visible {
    outline: 2px solid var(--oxblood);
    outline-offset: 2px;
}

/* --- chrome ------------------------------------------------------------- */

header {
    padding: 0.9rem 1.25rem;
    border-bottom: 3px double var(--rule);
    text-align: center;
}

header nav a {
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.05rem;
    text-decoration: none;
    color: var(--ink);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

header nav a::before { content: "❧ "; color: var(--oxblood); }

main {
    flex: 1;
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
    padding: 2.5rem 1.35rem 3.5rem;
}

footer {
    padding: 1.1rem 1.25rem;
    border-top: 3px double var(--rule);
    text-align: center;
    font-size: 0.82rem;
    font-style: italic;
    color: var(--ink-dim);
}

/* --- hero --------------------------------------------------------------- */

.hero { padding: 0.5rem 0; text-align: center; }

.kicker {
    font-size: 0.72rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--oxblood);
    margin-bottom: 0.9rem;
}

.hero h1 {
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(2.4rem, 10vw, 3.8rem);
    line-height: 1.08;
    letter-spacing: 0.01em;
}

/* decorative rule beneath the title */
.byline {
    font-style: italic;
    color: var(--ink-dim);
    margin-top: 0.65rem;
    font-size: 1.02rem;
}
.byline::before,
.byline::after {
    content: "—";
    color: var(--brass);
    margin: 0 0.55em;
}

.lede {
    margin: 1.6rem auto 0;
    max-width: 52ch;
    text-align: left;
}

/* --- case file (replaces the old boot terminal) ------------------------- */

.case-file {
    margin: 2.25rem 0;
    padding: 1.5rem 1.4rem 1.6rem;
    border: 1px solid var(--rule);
    outline: 1px solid var(--rule);
    outline-offset: 4px;             /* Art Deco double frame */
    background: var(--paper-soft);
    text-align: center;
}

.case-file__label {
    font-family: var(--display);
    font-size: 0.78rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--oxblood);
    margin-bottom: 0.6rem;
}

.case-file__brief {
    font-style: italic;
    color: var(--ink-dim);
    margin-bottom: 1.1rem;
}

.case-file__stats {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem 1.5rem;
    padding: 0.9rem 0;
    border-top: 1px solid var(--rule-soft);
    border-bottom: 1px solid var(--rule-soft);
}
.case-file__stats li {
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    color: var(--ink-dim);
    text-transform: lowercase;
}
.case-file__stats .num {
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--ink);
    margin-right: 0.3em;
}

.case-file__motto {
    margin-top: 1.1rem;
    font-style: italic;
    color: var(--ink);
}

/* --- how it plays ------------------------------------------------------- */

.section-label {
    font-family: var(--display);
    font-size: 0.82rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-dim);
    text-align: center;
    margin: 2.5rem 0 1.25rem;
}
.section-label::before,
.section-label::after {
    content: "·";
    color: var(--brass);
    margin: 0 0.6em;
}

.steps {
    list-style: none;
    counter-reset: step;
    display: grid;
    gap: 0.2rem;
    text-align: left;
}
.steps li {
    counter-increment: step;
    display: grid;
    grid-template-columns: minmax(6.5rem, max-content) 1fr;
    gap: 0.15rem 1.1rem;
    align-items: baseline;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--rule-soft);
}
.steps li:last-child { border-bottom: 0; }
.steps .verb {
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--oxblood);
    white-space: nowrap;
}
.steps .verb::before {
    content: counter(step, upper-roman) ". ";
    color: var(--brass);
    font-weight: 700;
}
.steps .desc { color: var(--ink-dim); }

@media (max-width: 30rem) {
    .steps li { grid-template-columns: 1fr; }
}

/* --- calls to action ---------------------------------------------------- */

.commands {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.85rem;
    margin-top: 2rem;
}

.note {
    margin-top: 1.4rem;
    font-size: 0.86rem;
    font-style: italic;
    text-align: center;
    color: var(--ink-dim);
}

/* --- buttons (links that read like an engraved plate) ------------------- */

.cmd {
    font-family: var(--display);
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-block;
    padding: 0.6rem 1.4rem;
    border: 1px solid var(--ink);
    background: transparent;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.15s, background-color 0.15s, border-color 0.15s;
}
.cmd:hover,
.cmd:focus-visible {
    background: var(--ink);
    color: var(--paper);
}
.cmd-primary {
    border-color: var(--oxblood);
    background: var(--oxblood);
    color: var(--paper);
}
.cmd-primary:hover,
.cmd-primary:focus-visible {
    background: var(--oxblood-dk);
    border-color: var(--oxblood-dk);
}
.cmd.is-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    border-style: dashed;
}
.cmd.is-disabled:hover {
    background: transparent;
    color: var(--paper);
    border-color: var(--oxblood);
}

/* --- auth (login) ------------------------------------------------------- */

.auth { max-width: 380px; margin: 2.5rem auto; }
.auth h1 {
    font-family: var(--display);
    margin-bottom: 1.25rem;
    font-size: 1.7rem;
    text-align: center;
}
.auth label {
    display: block;
    margin-bottom: 1rem;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-dim);
}
.auth input {
    display: block;
    width: 100%;
    margin-top: 0.4rem;
    padding: 0.6rem 0.7rem;
    font: inherit;
    color: var(--ink);
    background: #fbf5e6;
    border: 1px solid var(--rule);
}
.auth input:focus-visible { border-color: var(--oxblood); outline: none; }

/* --- buttons / messages ------------------------------------------------- */

.btn {
    font-family: var(--display);
    font-weight: 600;
    display: inline-block;
    padding: 0.6rem 1.4rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--paper);
    background: var(--oxblood);
    border: 1px solid var(--oxblood);
    cursor: pointer;
}
.btn:hover { background: var(--oxblood-dk); border-color: var(--oxblood-dk); }

.error {
    color: var(--danger);
    margin-bottom: 1rem;
    padding: 0.55rem 0.7rem;
    font-size: 0.9rem;
    border: 1px solid var(--danger);
    background: rgba(140, 28, 28, 0.07);
}

.error-page { text-align: center; padding: 3rem 0; }
.error-page h1 { font-family: var(--display); margin-bottom: 0.5rem; }
.error-page p { margin-bottom: 1rem; color: var(--ink-dim); }
.error-page a { color: var(--oxblood); text-decoration: underline; }
.error-page a:hover { color: var(--oxblood-dk); }

/* --- motion ------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    .cmd { transition: none; }
}