/* ═══════════════════════════════════════════════════════════
   ETUDE — Game-like Forms
   Inputs, textareas, buttons, labels. Scoped via `.menu-form`
   so opt-in per page. Reads --menu-* tokens from active theme.
   Pairs with form-feel.js for audio + motion.
   ═══════════════════════════════════════════════════════════ */

/* ── Container ──────────────────────────────────── */
.menu-form {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 28px 32px;
    background: var(--menu-bg-raised);
    color: var(--menu-ink);
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    /* Signature: torn corner cut-outs like a war-room document */
    clip-path: polygon(
        0 14px,
        14px 0,
        calc(100% - 14px) 0,
        100% 14px,
        100% calc(100% - 14px),
        calc(100% - 14px) 100%,
        14px 100%,
        0 calc(100% - 14px)
    );
    box-shadow: 0 14px 44px rgba(0, 0, 0, 0.55),
                inset 0 1px 0 var(--menu-accent-gold-glow);
}
.menu-form::before {
    /* Gold corner brackets — diegetic frame markers */
    content: '';
    position: absolute;
    inset: 10px;
    pointer-events: none;
    background:
        linear-gradient(var(--menu-accent-gold), var(--menu-accent-gold)) 0 0 / 20px 2px no-repeat,
        linear-gradient(var(--menu-accent-gold), var(--menu-accent-gold)) 0 0 / 2px 20px no-repeat,
        linear-gradient(var(--menu-accent-gold), var(--menu-accent-gold)) 100% 0 / 20px 2px no-repeat,
        linear-gradient(var(--menu-accent-gold), var(--menu-accent-gold)) 100% 0 / 2px 20px no-repeat,
        linear-gradient(var(--menu-accent-gold), var(--menu-accent-gold)) 0 100% / 20px 2px no-repeat,
        linear-gradient(var(--menu-accent-gold), var(--menu-accent-gold)) 0 100% / 2px 20px no-repeat,
        linear-gradient(var(--menu-accent-gold), var(--menu-accent-gold)) 100% 100% / 20px 2px no-repeat,
        linear-gradient(var(--menu-accent-gold), var(--menu-accent-gold)) 100% 100% / 2px 20px no-repeat;
    opacity: 0.5;
}

/* ── Header / title ────────────────────────────── */
.menu-form__title {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 0.3px;
    color: var(--menu-ink);
    margin-bottom: 4px;
}
.menu-form__subtitle {
    font-family: 'Crimson Pro', serif;
    font-style: italic;
    font-size: 14px;
    color: var(--menu-ink-soft);
    margin-bottom: 14px;
}

/* ── Field row ─────────────────────────────────── */
.menu-form__field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    position: relative;
}
.menu-form__label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2.2px;
    text-transform: uppercase;
    color: var(--menu-accent-gold);
    /* Leading chevron mark */
    display: flex;
    align-items: center;
    gap: 8px;
}
.menu-form__label::before {
    content: '';
    width: 8px; height: 10px;
    background: var(--menu-accent-gold);
    clip-path: polygon(0 0, 100% 50%, 0 100%);
    flex-shrink: 0;
}

/* ── Inputs & textareas ───────────────────────── */
.menu-form input[type="text"],
.menu-form input[type="email"],
.menu-form input[type="password"],
.menu-form input[type="search"],
.menu-form input[type="url"],
.menu-form input[type="number"],
.menu-form input[type="tel"],
.menu-form textarea,
.menu-form select {
    width: 100%;
    padding: 14px 16px;
    background: var(--menu-bg-deep);
    color: var(--menu-ink);
    border: none;
    border-bottom: 2px solid var(--menu-rule);
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    letter-spacing: 0.4px;
    outline: none;
    transition:
        border-color 180ms ease,
        background 180ms ease,
        box-shadow 200ms ease;
    /* Angled leading cut — subtle, keeps caret stable */
    clip-path: polygon(
        6px 0,
        100% 0,
        100% 100%,
        0 100%,
        0 6px
    );
}
.menu-form textarea {
    min-height: 120px;
    resize: vertical;
    font-family: 'Crimson Pro', serif;
    font-size: 16px;
    line-height: 1.55;
    letter-spacing: 0.2px;
}
.menu-form input::placeholder,
.menu-form textarea::placeholder {
    color: var(--menu-ink-soft);
    opacity: 0.55;
    font-style: italic;
}

.menu-form input:focus,
.menu-form textarea:focus,
.menu-form select:focus {
    background: var(--menu-bg);
    border-bottom-color: var(--menu-accent-gold);
    box-shadow:
        0 2px 0 var(--menu-accent-gold),
        0 18px 36px var(--menu-accent-hot-glow),
        inset 0 0 0 1px var(--menu-accent-hot-edge);
}

/* Invalid state */
.menu-form input:invalid:not(:placeholder-shown),
.menu-form input.menu-form__invalid,
.menu-form textarea.menu-form__invalid {
    border-bottom-color: var(--menu-cancel);
    box-shadow: 0 2px 0 var(--menu-cancel);
}

/* Caret color matches the theme's hot accent */
.menu-form input,
.menu-form textarea {
    caret-color: var(--menu-accent-gold);
}

/* ── Buttons ──────────────────────────────────── */
/* Submit / primary action — reuses .menu-tile visual DNA */
.menu-form button[type="submit"],
.menu-form .btn-submit,
.menu-form .btn-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 44px 16px 32px;
    min-height: 56px;
    background: var(--menu-accent-hot);
    color: var(--menu-bg);
    border: none;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 3px;
    text-transform: uppercase;
    cursor: pointer;
    clip-path: polygon(
        0 0,
        calc(100% - 18px) 0,
        100% 50%,
        calc(100% - 18px) 100%,
        0 100%
    );
    transform: skewX(var(--menu-skew));
    transition:
        transform 180ms var(--menu-ease-spring),
        background 180ms ease,
        box-shadow 200ms ease,
        color 180ms ease;
    will-change: transform;
}
.menu-form button[type="submit"] > *,
.menu-form .btn-submit > *,
.menu-form .btn-primary > * {
    transform: skewX(calc(-1 * var(--menu-skew)));
}
.menu-form button[type="submit"]::before,
.menu-form .btn-submit::before,
.menu-form .btn-primary::before {
    /* Leading gold chevron echoes menu-tile */
    content: '';
    width: 12px; height: 16px;
    background: var(--menu-accent-gold);
    clip-path: polygon(0 0, 100% 50%, 0 100%);
    transform: skewX(calc(-1 * var(--menu-skew)));
    transition: transform 220ms var(--menu-ease-spring);
}
.menu-form button[type="submit"]:hover,
.menu-form .btn-submit:hover,
.menu-form .btn-primary:hover {
    transform: skewX(var(--menu-skew)) translateX(4px) scale(1.02);
    background: var(--menu-accent-gold);
    color: var(--menu-bg-deep);
    box-shadow: -8px 0 32px var(--menu-accent-gold-glow);
}
.menu-form button[type="submit"]:hover::before,
.menu-form .btn-submit:hover::before,
.menu-form .btn-primary:hover::before {
    transform: skewX(calc(-1 * var(--menu-skew))) translateX(3px);
}
.menu-form button[type="submit"]:active,
.menu-form .btn-submit:active,
.menu-form .btn-primary:active {
    transform: skewX(var(--menu-skew)) translateX(2px) scale(0.98);
}

/* Secondary / ghost button */
.menu-form button.btn-ghost,
.menu-form .btn-secondary {
    background: transparent;
    color: var(--menu-ink);
    padding: 14px 28px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2.4px;
    text-transform: uppercase;
    border: 1px solid var(--menu-rule);
    border-radius: 0;
    cursor: pointer;
    transition:
        color 180ms ease,
        border-color 180ms ease,
        background 180ms ease;
}
.menu-form button.btn-ghost:hover,
.menu-form .btn-secondary:hover {
    color: var(--menu-accent-gold);
    border-color: var(--menu-accent-gold);
    background: var(--menu-accent-hot-soft);
}

/* Link-style action */
.menu-form a.form-link {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 1.4px;
    color: var(--menu-accent-hot);
    text-decoration: none;
    border-bottom: 1px dashed var(--menu-accent-hot-edge);
    padding-bottom: 1px;
    transition: color 180ms ease, border-color 180ms ease;
}
.menu-form a.form-link:hover {
    color: var(--menu-accent-gold);
    border-color: var(--menu-accent-gold);
}

/* ── Actions row ─────────────────────────────── */
.menu-form__actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: 10px;
    flex-wrap: wrap;
}

/* ── Error / status ──────────────────────────── */
.menu-form__errors {
    padding: 12px 16px;
    background: color-mix(in srgb, var(--menu-cancel) 14%, transparent);
    border-left: 3px solid var(--menu-cancel);
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--menu-cancel);
    letter-spacing: 0.3px;
}
.menu-form__status {
    font-family: 'Crimson Pro', serif;
    font-style: italic;
    font-size: 13px;
    color: var(--menu-ink-soft);
}

/* ── Focus ring (keyboard nav) ───────────────── */
.menu-form *:focus-visible {
    outline: none;
}
.menu-form input:focus-visible,
.menu-form textarea:focus-visible,
.menu-form select:focus-visible {
    /* Already handled by :focus; nothing more. */
}
.menu-form button:focus-visible,
.menu-form a:focus-visible {
    box-shadow:
        0 0 0 2px var(--menu-bg),
        0 0 0 4px var(--menu-accent-gold);
}

/* ── Submit pulse (on click) ──────────────────── */
@keyframes menu-form-pulse {
    0%   { box-shadow: 0 0 0 var(--menu-accent-gold-glow); }
    40%  { box-shadow: 0 0 30px var(--menu-accent-gold-glow),
                       -8px 0 36px var(--menu-accent-gold-glow); }
    100% { box-shadow: 0 0 0 var(--menu-accent-gold-glow); }
}
.menu-form__pulse {
    animation: menu-form-pulse 380ms ease-out;
}

/* ── Shake (invalid submit) ──────────────────── */
@keyframes menu-form-shake {
    0%,100% { transform: translateX(0); }
    15%     { transform: translateX(-9px); }
    30%     { transform: translateX(8px); }
    45%     { transform: translateX(-6px); }
    60%     { transform: translateX(5px); }
    75%     { transform: translateX(-3px); }
    90%     { transform: translateX(2px); }
}
.menu-form--shake {
    animation: menu-form-shake 360ms ease-in-out;
}

/* ── Auth-page host (centered, dark canvas) ──── */
.menu-form-host {
    min-height: 100dvh;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    background:
        radial-gradient(
            ellipse at 50% 45%,
            var(--menu-bg) 0%,
            var(--menu-bg-deep) 70%,
            #000 100%
        );
    color: var(--menu-ink);
}
.menu-form-host .menu-form {
    width: min(440px, 100%);
}

/* ── Mobile ───────────────────────────────── */
@media (max-width: 480px) {
    .menu-form {
        padding: 22px 20px;
        gap: 14px;
    }
    .menu-form__title { font-size: 22px; }
    .menu-form input[type="text"],
    .menu-form input[type="email"],
    .menu-form input[type="password"],
    .menu-form textarea,
    .menu-form select {
        padding: 14px 14px;
        font-size: 16px;  /* avoid iOS zoom */
    }
    .menu-form button[type="submit"],
    .menu-form .btn-submit,
    .menu-form .btn-primary {
        min-height: 52px;
        padding: 14px 36px 14px 26px;
        letter-spacing: 2px;
        font-size: 12px;
    }
    .menu-form__actions {
        flex-direction: column-reverse;
        align-items: stretch;
    }
    .menu-form__actions > * { width: 100%; text-align: center; }
}