/* ── Gnoke Petroleum — style.css ──────────────────────────────────────────── */
/* Copyright (C) 2026 Edmund Sparrow — GNU GPL v3                             */

/* ── Tokens ───────────────────────────────────────────────────────────────── */
:root {
  --bg:         #f7f2ec;
  --bg2:        #ede5d8;
  --surface:    #ffffff;
  --surface2:   #faf7f4;
  --surface3:   #f3ede5;
  --text:       #1c140e;
  --text2:      #4a3728;
  --muted:      #9c8070;
  --border:     #e0d2c2;
  --border2:    #ccbbaa;

  --accent:     #c2510a;   /* crude amber — petroleum accent */
  --accent-dk:  #9e3e08;
  --accent-lt:  #faeade;
  --accent-txt: #7a3010;

  --green:      #2d6e4e;
  --green-lt:   #dff2ea;
  --red:        #b83030;
  --red-lt:     #fde8e8;

  --topbar-bg:  #1c140e;
  --topbar-txt: #f7f2ec;

  --radius:     10px;
  --shadow:     0 1px 4px rgba(28,20,14,.08), 0 2px 12px rgba(28,20,14,.05);
  --shadow-lg:  0 4px 24px rgba(28,20,14,.14);

  --font-sans:  'DM Sans', system-ui, sans-serif;
  --font-mono:  'DM Mono', monospace;
  --font-disp:  'Playfair Display', serif;
}

/* ── Reset ────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
input, select, button { font-family: var(--font-sans); font-size: inherit; }

/* ── Loading Overlay ─────────────────────────────────────────────────────── */
#loading-overlay {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 16px;
  z-index: 999;
}
.loader-dots { display: flex; gap: 6px; }
.loader-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent);
  animation: blink 1.2s infinite;
}
.loader-dot:nth-child(2) { animation-delay: .2s; }
.loader-dot:nth-child(3) { animation-delay: .4s; }
@keyframes blink {
  0%,80%,100% { opacity: .2; transform: scale(.8); }
  40%         { opacity: 1;  transform: scale(1);  }
}
.loader-text {
  font-family: var(--font-mono);
  font-size: .7rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
}

/* ── Top Bar ─────────────────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 100;
  height: 52px; background: var(--topbar-bg);
  color: var(--topbar-txt);
  display: flex; align-items: center;
  padding: 0 14px; gap: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}
.brand { flex: 1; display: flex; align-items: baseline; gap: 6px; }
.brand-gnoke {
  font-family: var(--font-mono);
  font-size: .68rem; letter-spacing: .24em;
  text-transform: uppercase; color: var(--accent);
}
.brand-app {
  font-family: var(--font-disp);
  font-size: 1.3rem; font-weight: 700;
  color: var(--topbar-txt); letter-spacing: -.02em;
}
.burger {
  display: flex; flex-direction: column;
  justify-content: center; gap: 4px;
  background: none; border: none; cursor: pointer;
  padding: 6px; width: 34px; height: 34px; flex-shrink: 0;
}
.burger span {
  display: block; width: 20px; height: 2px;
  background: var(--topbar-txt); border-radius: 2px;
  transition: all .2s;
}
.btn-topbar {
  background: none; border: none; cursor: pointer;
  font-size: 1.1rem; padding: 5px 7px;
  border-radius: 7px; line-height: 1; flex-shrink: 0;
  transition: background .15s;
}
.btn-topbar:hover { background: rgba(255,255,255,.1); }

/* ── Tab Bar (desktop) ───────────────────────────────────────────────────── */
.tab-bar {
  display: none;
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  padding: 0 28px;
}
.tab-btn {
  background: none; border: none;
  border-bottom: 3px solid transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: .875rem; font-weight: 500;
  padding: 13px 18px 10px;
  cursor: pointer; white-space: nowrap;
  transition: color .15s, border-color .15s;
  margin-bottom: -2px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* ── Mobile Nav Drawer ───────────────────────────────────────────────────── */
.nav-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.45); z-index: 150;
  opacity: 0; transition: opacity .25s;
}
.nav-overlay.show { display: block; opacity: 1; }

.nav-drawer {
  position: fixed; top: 0; left: 0;
  width: 220px; height: 100dvh;
  background: var(--topbar-bg); z-index: 200;
  display: flex; flex-direction: column;
  transform: translateX(-100%);
  transition: transform .25s ease;
  box-shadow: var(--shadow-lg);
}
.nav-drawer.open { transform: translateX(0); }
.nav-header {
  display: flex; align-items: baseline; gap: 6px;
  padding: 20px 18px 14px;
  border-bottom: 1px solid rgba(255,255,255,.07);
  margin-bottom: 6px;
}
.nav-btn {
  display: flex; align-items: center; gap: 10px;
  background: none; border: none;
  color: rgba(255,255,255,.72);
  font-family: var(--font-sans);
  font-size: .9rem; font-weight: 500;
  padding: 13px 18px;
  cursor: pointer; text-align: left; width: 100%;
  transition: background .15s, color .15s;
}
.nav-btn:hover { background: rgba(255,255,255,.07); color: #fff; }
.nav-btn.active { background: var(--accent); color: #fff; }
.nav-icon { font-size: 1rem; }

/* ── Pages ───────────────────────────────────────────────────────────────── */
.pages { padding: 22px 18px; max-width: 1100px; margin: 0 auto; }
.page  { display: none; animation: fadeUp .22s ease forwards; }
.page.active { display: block; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Page Header ─────────────────────────────────────────────────────────── */
.page-header {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  gap: 14px; margin-bottom: 18px; flex-wrap: wrap;
}
.page-header h1 {
  font-family: var(--font-disp);
  font-size: 1.6rem; font-weight: 700;
  color: var(--text); line-height: 1.1;
}
.page-header .sub {
  font-size: .78rem; color: var(--muted); margin-top: 4px;
  font-family: var(--font-mono); letter-spacing: .04em;
}

/* ── Product Tabs ────────────────────────────────────────────────────────── */
.product-tabs {
  display: flex; gap: 6px;
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  padding-bottom: 4px; margin-bottom: 16px;
  scrollbar-width: none;
}
.product-tabs::-webkit-scrollbar { display: none; }
.prod-tab {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 50px;
  border: 1.5px solid var(--border);
  background: var(--surface); color: var(--muted);
  cursor: pointer; white-space: nowrap;
  font-size: .82rem; font-weight: 500;
  transition: all .18s; flex-shrink: 0;
}
.prod-tab-icon { font-size: .95rem; }
.prod-tab:hover { border-color: var(--accent); color: var(--accent); }
.prod-tab.active {
  background: var(--accent); border-color: var(--accent);
  color: #fff; font-weight: 600;
}

/* ── Controls Row ────────────────────────────────────────────────────────── */
.control-row {
  display: flex; gap: 12px; align-items: flex-end;
  margin-bottom: 16px; flex-wrap: wrap;
}
.control-date { display: flex; flex-direction: column; gap: 4px; }
.control-date label {
  font-family: var(--font-mono);
  font-size: .62rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted);
  font-weight: 500; margin-bottom: 0;
}
.control-date input[type="date"] {
  padding: 8px 11px;
  border: 1.5px solid var(--border); border-radius: var(--radius);
  background: var(--surface); color: var(--text);
  font-size: .875rem; cursor: pointer;
  transition: border-color .15s, box-shadow .15s;
  margin-bottom: 0;
}
.control-date input[type="date"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-lt);
}

/* ── View Chips ──────────────────────────────────────────────────────────── */
.view-chips { display: flex; gap: 6px; align-items: center; }
.chip-btn {
  padding: 7px 14px; border-radius: 50px;
  border: 1.5px solid var(--border);
  background: var(--surface); color: var(--muted);
  cursor: pointer; font-size: .8rem; font-weight: 500;
  transition: all .18s; white-space: nowrap;
}
.chip-btn:hover { border-color: var(--accent); color: var(--accent); }
.chip-btn.active {
  background: var(--accent-lt);
  border-color: rgba(194,81,10,.35);
  color: var(--accent); font-weight: 600;
}

/* ── Data Card ───────────────────────────────────────────────────────────── */
.data-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.data-card-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.card-title-inline {
  font-family: var(--font-disp);
  font-size: 1rem; font-weight: 700; color: var(--text);
}

/* ── Table ───────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .875rem; }
th, td { padding: 11px 16px; border-bottom: 1px solid var(--border); }
th {
  background: var(--surface2);
  font-family: var(--font-mono);
  font-size: .62rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted);
  font-weight: 500; text-align: left;
}
th.num, td.num { text-align: right; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--surface2); }

.unit-cell {
  font-family: var(--font-mono);
  font-size: .75rem; letter-spacing: .04em; color: var(--muted);
}
.amount-input {
  width: 130px; padding: 7px 10px;
  border: 1.5px solid var(--border); border-radius: 7px;
  background: var(--bg); color: var(--text);
  text-align: right; font-size: .875rem;
  transition: border-color .15s, box-shadow .15s;
}
.amount-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-lt);
}
.summary-row td {
  font-weight: 700;
  background: var(--accent-lt);
  border-top: 2px solid rgba(194,81,10,.2);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: .8rem; letter-spacing: .04em;
}
.empty-cell {
  text-align: center; color: var(--muted);
  padding: 2.5rem; font-size: .875rem;
}

/* ── Settings / Config Grid ──────────────────────────────────────────────── */
.config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.card-title {
  font-family: var(--font-disp);
  font-size: 1.05rem; font-weight: 600; color: var(--text);
  margin-bottom: 18px; padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* Settings product section */
.settings-product {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow);
}
.settings-product-header {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: .9rem; font-weight: 600;
}
.unit-counter { display: flex; align-items: center; gap: 12px; }
.counter-btn {
  width: 28px; height: 28px; border-radius: 7px;
  border: 1.5px solid var(--border);
  background: var(--surface2); cursor: pointer;
  font-size: 1rem; color: var(--text);
  display: flex; align-items: center; justify-content: center;
  transition: all .15s;
}
.counter-btn:hover { border-color: var(--accent); color: var(--accent); }
.counter-val {
  font-family: var(--font-mono);
  font-size: .85rem; min-width: 18px; text-align: center;
}
.unit-list  { display: flex; flex-direction: column; gap: 6px; }
.unit-row {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface2); padding: 8px 12px;
  border-radius: 8px; border: 1px solid var(--border);
}
.unit-row-label {
  font-family: var(--font-mono); font-size: .72rem;
  letter-spacing: .06em; color: var(--muted);
  width: 64px; flex-shrink: 0;
}
.unit-name-input {
  flex: 1; padding: 7px 10px;
  border: 1.5px solid var(--border); border-radius: 6px;
  background: var(--surface); color: var(--text); font-size: .875rem;
  transition: border-color .15s;
  margin-bottom: 0;
}
.unit-name-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-lt);
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; padding: 9px 18px;
  background: var(--accent); color: #fff; border: none;
  border-radius: var(--radius);
  font-size: .875rem; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: background .15s, transform .1s, box-shadow .15s;
}
.btn-primary:hover  { background: var(--accent-dk); box-shadow: var(--shadow); }
.btn-primary:active { transform: scale(.98); }

.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; padding: 9px 18px;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border2); border-radius: var(--radius);
  font-size: .875rem; font-weight: 500;
  cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s;
}
.btn-outline:hover { background: var(--surface2); border-color: var(--text2); }

/* ── About table ─────────────────────────────────────────────────────────── */
.about-key {
  font-family: var(--font-mono);
  font-size: .72rem; letter-spacing: .06em;
  text-transform: uppercase; color: var(--muted);
  padding: 7px 12px 7px 0; white-space: nowrap;
  vertical-align: middle;
  border-bottom: 1px solid var(--border);
}
.about-key + td {
  font-size: .875rem; color: var(--text);
  padding: 7px 0; border-bottom: 1px solid var(--border);
}
tr:last-child .about-key,
tr:last-child .about-key + td { border-bottom: none; }

/* ── Misc ────────────────────────────────────────────────────────────────── */
label {
  display: block; font-size: .75rem; font-weight: 600;
  color: var(--text2); margin-bottom: 5px;
  font-family: var(--font-mono); letter-spacing: .05em;
  text-transform: uppercase;
}
.hint { font-size: .8rem; color: var(--muted); line-height: 1.55; }
.data-btns { display: flex; flex-wrap: wrap; gap: 10px; }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 22px; left: 50%;
  transform: translateX(-50%) translateY(14px);
  background: var(--text); color: var(--bg);
  padding: 9px 20px; border-radius: 24px;
  font-size: .85rem; font-weight: 500;
  box-shadow: var(--shadow-lg); opacity: 0;
  pointer-events: none; white-space: nowrap; z-index: 500;
  transition: opacity .22s, transform .22s;
}
.toast.show  { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error   { background: var(--red);   color: #fff; }
.toast.success { background: var(--green); color: #fff; }
.toast.info    { background: var(--text);  color: var(--bg); }

/* ── Mobile ──────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .tab-bar  { display: none; }
  .burger   { display: flex; }
  .pages    { padding: 14px 12px; }
  .config-grid { grid-template-columns: 1fr; }
  .page-header h1 { font-size: 1.3rem; }
  th, td { padding: 9px 10px; }
  .amount-input { width: 100%; }
  .control-row { flex-direction: column; align-items: stretch; }
  .view-chips  { justify-content: flex-start; flex-wrap: wrap; }
}

/* ── Desktop ─────────────────────────────────────────────────────────────── */
@media (min-width: 769px) {
  .tab-bar    { display: flex; }
  .burger     { display: none; }
  .nav-drawer, .nav-overlay { display: none !important; }
  .pages      { padding: 26px 32px; }
}
@media (min-width: 1200px) { .pages { padding: 30px 48px; } }

/* ── PWA safe area ───────────────────────────────────────────────────────── */
@media (display-mode: standalone) {
  .topbar { padding-top: env(safe-area-inset-top); height: calc(52px + env(safe-area-inset-top)); }
}