@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@300;400;500;600&display=swap');

:root {
  --bg: #0f1117;
  --surface: #181c27;
  --surface2: #1e2335;
  --border: #2a3050;
  --accent: #4f7cff;
  --accent2: #ff6b35;
  --green: #3ecf8e;
  --red: #ff4d4d;
  --yellow: #ffd166;
  --text: #e2e8f0;
  --text2: #8892a4;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
  --nav-h: 60px;
  --header-h: 52px;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

/* PAGES */
.page { display: none; }
.page.active { display: block; }
html, body { background: var(--bg); color: var(--text); font-family: var(--sans); font-size: 15px; overflow-x: hidden; }

/* HEADER */
.app-header {
  background: var(--surface); border-bottom: 1px solid var(--border);
  height: var(--header-h); padding: 0 16px;
  display: flex; align-items: center; justify-content: space-between;
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
}
.app-logo { display: flex; align-items: center; gap: 10px; }
.app-logo-icon { width: 32px; height: 32px; background: var(--accent); border-radius: 7px; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.app-logo-text { font-family: var(--mono); font-size: 11px; color: var(--text2); line-height: 1.4; }
.app-logo-text strong { color: var(--text); font-size: 13px; display: block; }
.app-user-badge { font-family: var(--mono); font-size: 10px; color: var(--text2); background: var(--surface2); padding: 4px 10px; border-radius: 6px; border: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.btn-logout { background: none; border: none; color: var(--red); cursor: pointer; font-size: 14px; padding: 4px; }

/* BOTTOM NAV */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  height: var(--nav-h); background: var(--surface); border-top: 1px solid var(--border);
  display: flex; z-index: 100; padding-bottom: env(safe-area-inset-bottom);
}
.nav-tab {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; cursor: pointer; font-family: var(--mono); font-size: 9px;
  color: var(--text2); text-transform: uppercase; letter-spacing: .04em;
  border-top: 2px solid transparent; transition: all .2s; padding: 6px 2px;
  -webkit-user-select: none; user-select: none; text-decoration: none;
}
.nav-tab .ti { font-size: 18px; line-height: 1; }
.nav-tab.active { color: var(--accent); border-top-color: var(--accent); }

/* MAIN */
.app-main {
  padding: 16px 14px;
  padding-top: calc(var(--header-h) + 16px);
  padding-bottom: calc(var(--nav-h) + 16px + env(safe-area-inset-bottom));
  max-width: 520px; margin: 0 auto; width: 100%;
}

/* CARDS */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-bottom: 14px; }
.section-title { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: .12em; color: var(--text2); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.section-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* FORMS */
label { display: block; font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; color: var(--text2); margin-bottom: 6px; }
input, select, textarea { width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 11px 12px; color: var(--text); font-family: var(--mono); font-size: 14px; outline: none; transition: border-color .2s; -webkit-appearance: none; }
input:focus, select:focus { border-color: var(--accent); }
select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238892a4' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 34px; }
.form-row { margin-bottom: 14px; }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 12px 18px; border-radius: 9px; border: none; cursor: pointer; font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: .05em; transition: all .15s; min-height: 44px; text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-success { background: var(--green); color: #000; }
.btn-danger { background: transparent; color: var(--red); border: 1px solid var(--red); }
.btn-ghost { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-warn { background: transparent; color: var(--yellow); border: 1px solid var(--yellow); }
.btn-sm { padding: 7px 12px; font-size: 11px; min-height: 36px; }
.btn-full { width: 100%; }
.btn-row { display: flex; gap: 8px; }
.btn:disabled { opacity: .4; cursor: not-allowed; }

/* BADGES */
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-family: var(--mono); font-size: 10px; font-weight: 600; }
.badge-blue { background: rgba(79,124,255,.15); color: var(--accent); }
.badge-green { background: rgba(62,207,142,.15); color: var(--green); }
.badge-orange { background: rgba(255,107,53,.15); color: var(--accent2); }
.badge-red { background: rgba(255,77,77,.15); color: var(--red); }
.badge-yellow { background: rgba(255,209,102,.15); color: var(--yellow); }
.badge-purple { background: rgba(168,85,247,.15); color: #a855f7; }

/* ALERTS */
.alert { padding: 12px 14px; border-radius: 9px; margin-bottom: 12px; font-size: 13px; font-family: var(--mono); line-height: 1.5; }
.alert-success { background: rgba(62,207,142,.1); border: 1px solid rgba(62,207,142,.3); color: var(--green); }
.alert-error { background: rgba(255,77,77,.1); border: 1px solid rgba(255,77,77,.3); color: var(--red); }
.alert-warn { background: rgba(255,209,102,.1); border: 1px solid rgba(255,209,102,.3); color: var(--yellow); }

/* STAT BOXES */
.stats-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.stat-box { background: var(--surface2); border: 1px solid var(--border); border-radius: 10px; padding: 14px 12px; text-align: center; }
.stat-val { font-family: var(--mono); font-size: 22px; font-weight: 600; color: var(--accent); display: block; margin-bottom: 3px; }
.stat-lbl { font-family: var(--mono); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; color: var(--text2); }

/* PÉCULE */
.pecule-display { background: linear-gradient(135deg, rgba(79,124,255,.1), rgba(62,207,142,.05)); border: 1px solid rgba(79,124,255,.3); border-radius: 10px; padding: 14px 16px; display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.pecule-block { text-align: center; }
.pecule-lbl { font-family: var(--mono); font-size: 9px; color: var(--text2); text-transform: uppercase; margin-bottom: 4px; }
.pecule-amount { font-family: var(--mono); font-size: 22px; font-weight: 700; color: var(--green); }
.pecule-amount.low { color: var(--yellow); }
.pecule-amount.empty { color: var(--red); }

/* MODAL */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.75); z-index: 200; align-items: flex-end; justify-content: center; }
.modal-overlay.open { display: flex; }
.modal { background: var(--surface); border: 1px solid var(--border); border-radius: 18px 18px 0 0; padding: 24px 20px; width: 100%; max-width: 520px; padding-bottom: calc(24px + env(safe-area-inset-bottom)); }
.modal h3 { font-family: var(--mono); font-size: 13px; margin-bottom: 18px; color: var(--text); }
.modal-actions { display: flex; gap: 10px; margin-top: 16px; }
.modal-actions .btn { flex: 1; }

/* ROWS */
.list-row { background: var(--surface2); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 8px; }
.list-row-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.list-row-title { font-family: var(--mono); font-size: 13px; font-weight: 600; }
.list-row-sub { font-family: var(--mono); font-size: 10px; color: var(--text2); line-height: 1.5; }
.list-row-actions { display: flex; gap: 6px; margin-top: 10px; }

/* DAYS CHECK */
.days-check { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.days-check label { display: flex; align-items: center; justify-content: center; gap: 5px; font-size: 12px; font-family: var(--sans); color: var(--text2); cursor: pointer; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); flex: 1; transition: all .15s; }
.days-check input[type=checkbox] { display: none; }
.days-check label:has(input:checked) { background: rgba(79,124,255,.12); border-color: var(--accent); color: var(--accent); font-weight: 600; }

/* PRODUCT GRID */
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 14px; }
.product-card { background: var(--surface2); border: 1px solid var(--border); border-radius: 10px; padding: 10px; cursor: pointer; transition: all .15s; position: relative; }
.product-card.selected { border-color: var(--accent); background: rgba(79,124,255,.08); }
.product-card .p-name { font-size: 11px; font-weight: 500; margin-bottom: 3px; color: var(--text); line-height: 1.3; }
.product-card .p-cat { font-family: var(--mono); font-size: 9px; color: var(--text2); margin-bottom: 5px; }
.product-card .p-price { font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--accent); }
.product-card .p-qty { position: absolute; top: 6px; right: 6px; background: var(--accent); color: #fff; border-radius: 50%; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; font-family: var(--mono); font-size: 10px; font-weight: 700; }
.qty-ctrl { display: flex; align-items: center; gap: 6px; margin-top: 8px; }
.qty-btn { width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer; font-size: 16px; display: flex; align-items: center; justify-content: center; transition: all .1s; flex-shrink: 0; }
.qty-btn:active { border-color: var(--accent); color: var(--accent); }
.qty-val { font-family: var(--mono); font-size: 13px; min-width: 18px; text-align: center; }

/* SUMMARY BAR */
.summary-bar { position: fixed; left: 0; right: 0; bottom: calc(var(--nav-h) + env(safe-area-inset-bottom)); background: var(--surface2); border-top: 1px solid var(--border); padding: 10px 14px; display: none; align-items: center; gap: 10px; z-index: 90; }
.summary-bar.visible { display: flex; }

/* EMPTY STATE */
.empty-state { text-align: center; padding: 32px 16px; color: var(--text2); font-family: var(--mono); font-size: 12px; }
.empty-state .ei { font-size: 28px; margin-bottom: 8px; }

/* LOADING */
.loader { display: flex; align-items: center; justify-content: center; padding: 40px; }
.spinner { width: 28px; height: 28px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* MISC */
.mt-10 { margin-top: 10px; }
.mt-14 { margin-top: 14px; }
.text-mono { font-family: var(--mono); }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text2); }
.flex-row { display: flex; align-items: center; gap: 8px; }

@media (min-width: 768px) {
  .app-main { max-width: 900px; }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-row { grid-template-columns: repeat(4, 1fr); }
}