/* Parts Order – workshop palette: graphite + bench grey, petrol for actions, signal yellow for focus/filled slots */
:root {
    --po-graphite: #22303a;
    --po-steel: #5e6e7a;
    --po-bench: #eef1f3;
    --po-paper: #ffffff;
    --po-petrol: #1d4e63;
    --po-petrol-dark: #153a4a;
    --po-signal: #f2b705;
    --po-rule: #d5dbe0;
    --po-danger: #b42318;

    --bs-body-font-family: "Barlow", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    --bs-body-color: var(--po-graphite);
    --bs-body-bg: var(--po-bench);
    --bs-form-invalid-color: var(--po-danger);
    --bs-form-invalid-border-color: var(--po-danger);
}

body { font-size: 1.0625rem; line-height: 1.55; display: flex; flex-direction: column; min-height: 100vh; }
main { flex: 1 0 auto; }

.container-narrow { max-width: 760px; margin: 0 auto; padding-left: 1.25rem; padding-right: 1.25rem; }

.site-header { background: var(--po-graphite); border-bottom: 4px solid var(--po-signal); }
.site-header .brand {
    display: inline-block; padding: .9rem 0; color: #fff; text-decoration: none;
    font-family: "Barlow Semi Condensed", sans-serif; font-weight: 700; font-size: 1.25rem; letter-spacing: .01em;
}
.site-header .container-narrow { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.lang-switch { display: flex; gap: .25rem; font-family: "Barlow Semi Condensed", sans-serif; font-weight: 600; }
.lang-switch a {
    color: rgba(255,255,255,.7); text-decoration: none; padding: .3rem .55rem; border-radius: 4px;
    font-size: .9rem; letter-spacing: .04em; line-height: 1;
}
.lang-switch a:hover, .lang-switch a:focus-visible { color: #fff; background: rgba(255,255,255,.12); }
.lang-switch a.active { color: var(--po-graphite); background: #fff; }
.site-footer { padding: 1.5rem 0 2rem; color: var(--po-steel); font-size: .875rem; }

.page-title {
    font-family: "Barlow Semi Condensed", sans-serif; font-weight: 700;
    font-size: clamp(2rem, 5vw, 2.75rem); line-height: 1.05; margin-bottom: .5rem;
}
.lead-text { font-size: 1.125rem; color: var(--po-steel); max-width: 60ch; margin-bottom: 2rem; }

/* Form sections sit on paper, separated by the bench showing through */
.form-block { background: var(--po-paper); border: 1px solid var(--po-rule); border-radius: 6px; padding: 1.5rem; margin-bottom: 1rem; }
.form-block legend {
    font-family: "Barlow Semi Condensed", sans-serif; font-weight: 600;
    font-size: 1.25rem; margin-bottom: 1rem; padding: 0;
}
.form-label { font-weight: 500; margin-bottom: .3rem; }
.hint { color: var(--po-steel); font-size: .9375rem; margin-top: -.5rem; }

.form-control { border-color: #bcc5cc; border-radius: 4px; padding: .6rem .75rem; }
.form-control:focus, .btn:focus-visible, .slot:focus-visible, .slot-empty:focus-visible {
    border-color: var(--po-graphite); outline: 3px solid var(--po-signal); outline-offset: 1px; box-shadow: none;
}

/* jQuery unobtrusive validation → Bootstrap look */
.input-validation-error, .form-control.is-invalid { border-color: var(--po-danger) !important; }
.field-validation-error { color: var(--po-danger); display: block; margin-top: .25rem; }
.field-validation-valid { display: none; }

/* ---- Photo tray: fixed number of numbered slots, the memorable element ---- */
.photo-tray {
    display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .75rem;
    padding: .75rem; background: var(--po-bench); border-radius: 6px; border: 1px solid var(--po-rule);
    transition: background-color .15s;
}
.photo-tray.drag-over { background: #fff6d6; border-color: var(--po-signal); }
@media (max-width: 575.98px) { .photo-tray { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.slot, .slot-empty {
    position: relative; aspect-ratio: 1 / 1; border-radius: 4px; overflow: hidden; min-width: 0;
}
.slot-empty {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .2rem;
    border: 2px dashed #aab4bc; background: var(--po-paper); color: var(--po-steel); cursor: pointer;
    font-size: .8125rem; text-align: center; padding: .25rem;
}
.slot-empty:hover { border-color: var(--po-graphite); color: var(--po-graphite); }
.slot-empty .slot-plus { font-size: 1.6rem; line-height: 1; font-weight: 500; }
.slot-number {
    position: absolute; top: .3rem; left: .3rem; z-index: 2; min-width: 1.4rem; height: 1.4rem; padding: 0 .3rem;
    border-radius: 3px; background: rgba(255,255,255,.9); color: var(--po-graphite);
    font-size: .75rem; font-weight: 600; display: flex; align-items: center; justify-content: center;
}
.slot { background: var(--po-graphite); border: 2px solid var(--po-graphite); }
.slot.is-done { border-color: var(--po-signal); }
.slot.is-error { border-color: var(--po-danger); background: #fff; }
.slot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.slot .slot-status {
    position: absolute; left: 0; right: 0; bottom: 0; padding: .25rem .4rem; font-size: .75rem; line-height: 1.25;
    background: rgba(34,48,58,.85); color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.slot.is-error .slot-status { background: var(--po-danger); white-space: normal; }
.slot .slot-progress { position: absolute; left: 0; bottom: 0; height: 3px; background: var(--po-signal); width: 0; transition: width .2s; }
.slot .slot-placeholder { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: #cfd6db; }
.slot .slot-remove, .slot .slot-retry {
    position: absolute; top: .3rem; z-index: 2; border: 0; border-radius: 3px; background: rgba(255,255,255,.92);
    color: var(--po-graphite); font-size: .75rem; font-weight: 600; padding: .1rem .4rem; line-height: 1.3;
}
.slot .slot-remove { right: .3rem; }
.slot .slot-retry { right: 4.2rem; }
.slot .slot-remove:hover { background: var(--po-danger); color: #fff; }

.submit-block { background: transparent; border: 0; padding: .5rem 0 0; }
.btn-send {
    background: var(--po-petrol); color: #fff; border: 0; border-radius: 4px; width: 100%;
    padding: .85rem 1.5rem; font-size: 1.125rem; font-weight: 600;
}
.btn-send:hover, .btn-send:active { background: var(--po-petrol-dark) !important; color: #fff !important; }
.btn-send:disabled { background: var(--po-steel); color: #fff; opacity: 1; }
@media (min-width: 576px) { .btn-send { width: auto; min-width: 16rem; } }

/* Success */
.success-panel { background: var(--po-paper); border: 1px solid var(--po-rule); border-top: 6px solid var(--po-signal); border-radius: 6px; padding: 2rem; }
.success-panel:focus { outline: none; }
.reference-box { display: inline-flex; flex-direction: column; background: var(--po-bench); border-radius: 4px; padding: .9rem 1.2rem; margin: .5rem 0 1rem; }
.reference-label { font-size: .875rem; color: var(--po-steel); }
.reference-code { font-family: "Barlow Semi Condensed", sans-serif; font-weight: 700; font-size: 1.75rem; letter-spacing: .04em; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }