/* =========================================================
   app.css — Εμφάνιση εφαρμογής (PDA / Android, mobile first)
   ========================================================= */

:root {
  --ink:        #101A24;   /* βασικό σκούρο */
  --ink-soft:   #2B3B4C;
  --paper:      #EDF0F4;   /* φόντο σελίδας */
  --card:       #FFFFFF;
  --line:       #D5DCE5;
  --amber:      #FFB020;   /* accent — ταινία ασφαλείας */
  --green:      #0E9E76;
  --red:        #D6383C;
  --muted:      #6C7C8C;

  --radius: 10px;
  --mono: ui-monospace, "SF Mono", "Roboto Mono", Menlo, Consolas, monospace;
}

* { -webkit-tap-highlight-color: transparent; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: 92px;          /* χώρος για το sticky footer */
}

/* ---------------------------- HEADER ---------------------------- */
.app-header {
  background: var(--ink);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 3px solid var(--amber);
}
.app-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
}
.app-header__eyebrow {
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 700;
}
.app-header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.app-header__logo {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  object-fit: contain;
}
.app-header__title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  margin: 0;
}
.btn-reset {
  background: transparent;
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  border-radius: 999px;
  font-size: 13px;
  padding: 6px 14px;
}
.btn-reset:active { background: rgba(255,255,255,.15); }

/* ---- PWA: εγκατάσταση, σύνδεση, ενημέρωση ---- */
.app-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}
.btn-install {
  background: var(--amber);
  border: 0;
  color: var(--ink);
  font-weight: 700;
  border-radius: 999px;
  font-size: 13px;
  padding: 6px 14px;
  white-space: nowrap;
}
.btn-install:active { filter: brightness(.92); }

.offline-badge {
  display: inline-block;
  vertical-align: middle;
  margin-left: 8px;
  background: var(--red);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .02em;
  border-radius: 999px;
  padding: 2px 8px;
}

.pwa-update {
  position: fixed;
  left: 10px;
  right: 10px;
  bottom: calc(92px + 10px);          /* πάνω από το sticky footer */
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--ink);
  color: #fff;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 14px;
  box-shadow: 0 6px 20px rgba(16,26,36,.35);
}
.pwa-hint {
  position: fixed;
  left: 10px;
  right: 10px;
  bottom: calc(92px + 10px);
  z-index: 45;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px;
  background: var(--ink);
  color: #fff;
  border: 1px solid rgba(255,255,255,.18);
  border-left: 4px solid var(--amber);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: 0 6px 20px rgba(16,26,36,.35);
}
.pwa-hint__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  line-height: 1.35;
  min-width: 0;
}
.pwa-hint__text strong { font-size: 14px; }
.pwa-hint__btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  white-space: nowrap;
  flex: 0 0 auto;
}

.pwa-update__btn {
  background: var(--amber);
  border: 0;
  color: var(--ink);
  font-weight: 700;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  white-space: nowrap;
}

/* ---------------------------- ΒΗΜΑΤΑ ---------------------------- */
.step {
  display: flex;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 14px;
}
.step__tape { width: 8px; flex: 0 0 8px; background: var(--line); }
.step__body { flex: 1 1 auto; padding: 14px 14px 16px; min-width: 0; }

/* Η "ταινία" στα αριστερά δείχνει την κατάσταση του βήματος */
.step[data-state="active"] .step__tape {
  background: repeating-linear-gradient(
    -45deg, var(--amber) 0 7px, var(--ink) 7px 14px
  );
}
.step[data-state="done"] .step__tape { background: var(--green); }
.step[data-state="error"] .step__tape { background: var(--red); }
.step[data-state="locked"] { opacity: .55; }

.step__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.step__num {
  width: 26px; height: 26px;
  flex: 0 0 26px;
  display: grid; place-items: center;
  background: var(--ink);
  color: #fff;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--mono);
}
.step[data-state="done"] .step__num { background: var(--green); }
.step[data-state="error"] .step__num { background: var(--red); }
.step__title {
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin: 0;
}
.step__spinner { display: none; margin-left: auto; color: var(--muted); }
.step__spinner.is-on { display: inline-block; }

/* ---------------------------- ΠΕΔΙΑ ---------------------------- */
.field-label {
  display: block;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 5px;
}

.scan-input,
.qty-input,
.ro-input {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 600;
  height: 54px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #FBFCFD;
}
.scan-input:focus,
.qty-input:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(255,176,32,.22);
  background: #fff;
}
.scan-input:disabled,
.qty-input:disabled,
.ro-input { background: #EFF2F5; color: var(--ink-soft); }

.qty-grid { display: flex; gap: 10px; align-items: flex-start; }
.qty-grid__main { flex: 1 1 auto; min-width: 0; }
.qty-grid__side { flex: 0 0 108px; }

.qty-group .qty-input { text-align: center; border-left: 0; border-right: 0; }
.btn-step {
  background: var(--ink);
  color: #fff;
  font-size: 24px;
  font-weight: 600;
  line-height: 1;
  width: 50px;
  border: 2px solid var(--ink);
}
.btn-step:disabled { background: var(--line); border-color: var(--line); color: #fff; }
.btn-step:active:not(:disabled) { background: var(--ink-soft); }

.qty-hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
  min-height: 18px;
}

.value-box {
  margin-top: 14px;
  background: var(--ink);
  color: #fff;
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.value-box__label {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 700;
}
.value-box__amount {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 700;
}

/* ---------------------------- ΑΠΟΤΕΛΕΣΜΑΤΑ ---------------------------- */
.result:empty { display: none; }
.result { margin-top: 12px; }

.res-card {
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
  border-radius: 8px;
  background: #F7FAF9;
  padding: 10px 12px;
}
.res-row { display: flex; gap: 10px; padding: 3px 0; }
.res-row + .res-row { border-top: 1px dashed var(--line); }
.res-key {
  flex: 0 0 92px;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  padding-top: 3px;
}
.res-val { flex: 1 1 auto; font-size: 15px; font-weight: 600; word-break: break-word; }
.res-val--mono { font-family: var(--mono); }

/* ---- Λίστες ειδών: πρώτες ύλες & παραγόμενο ---- */
.mtr-block { margin-top: 10px; }
.mtr-block__title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 5px;
}
.mtr-block__count {
  background: var(--line);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 0 6px;
  font-size: 10px;
  line-height: 16px;
}

.mtr {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  padding: 7px 10px;
}
.mtr + .mtr { margin-top: 6px; }

/* Το είδος που σαρώθηκε στο βήμα 1 */
.mtr--scanned {
  border-left-color: var(--amber);
  background: #FFF9EC;
}

.mtr__head {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.mtr__name {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.25;
  min-width: 0;
  word-break: break-word;
}
.mtr__code {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  margin-left: auto;
  flex: 0 0 auto;
}
.mtr__nums {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 3px;
  font-size: 13px;
  font-family: var(--mono);
  color: var(--ink-soft);
}
.mtr__qty { font-weight: 700; color: var(--ink); }
.mtr__x   { color: var(--muted); }
.mtr__val {
  margin-left: auto;
  font-weight: 700;
  color: var(--ink);
  flex: 0 0 auto;
}

.res-alert {
  border: 1px solid #F2C2C3;
  border-left: 4px solid var(--red);
  background: #FDF3F3;
  color: #8E2225;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 600;
}
.res-alert small { display: block; font-weight: 400; color: #A5595B; margin-top: 3px; }

/* ---------------------------- FOOTER ---------------------------- */
.app-footer {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  background: rgba(237,240,244,.94);
  backdrop-filter: blur(6px);
  border-top: 1px solid var(--line);
  z-index: 20;
}
.btn-submit {
  width: 100%;
  height: 58px;
  background: var(--amber);
  border: none;
  border-radius: 10px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
}
.btn-submit:disabled { background: #C9D1DA; color: #8A97A5; }
.btn-submit:active:not(:disabled) { background: #E89F16; }

/* ---------------------------- ΛΟΙΠΑ ---------------------------- */
.toast { border-radius: 8px; font-weight: 600; }

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