/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --bg2: #161b27;
  --bg3: #1e2535;
  --card: #1a2235;
  --border: #252f42;
  --text: #e8edf5;
  --text2: #8b95a8;
  --text3: #5a6478;
  --accent: #F59E0B;
  --accent2: #FCD34D;
  --green: #10B981;
  --blue: #3B82F6;
  --red: #EF4444;
  --purple: #8B5CF6;
  --orange: #F97316;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,.4);
}

html, body { height: 100%; font-family: 'Inter', system-ui, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }

/* === PINPAD === */
.pinpad-overlay {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(245,158,11,.12) 0%, var(--bg) 70%);
}
.pinpad-container {
  background: var(--card); border: 1px solid var(--border); border-radius: 20px;
  padding: 48px 40px; width: 360px; text-align: center;
  box-shadow: 0 24px 80px rgba(0,0,0,.6);
}
.pinpad-logo { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 28px; }
.pinpad-logo span { font-size: 22px; font-weight: 700; color: var(--accent); }
.pinpad-container h2 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.pinpad-container > p { color: var(--text2); font-size: 13px; margin-bottom: 28px; }

.pin-display { display: flex; justify-content: center; gap: 14px; margin-bottom: 20px; }
.pin-dot {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--border); background: transparent; transition: all .15s;
}
.pin-dot.filled { background: var(--accent); border-color: var(--accent); transform: scale(1.1); }
.pin-error { color: var(--red); font-size: 12px; margin-bottom: 12px; }

.pinpad-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pin-btn {
  height: 56px; border-radius: 12px; border: 1px solid var(--border); background: var(--bg3);
  color: var(--text); font-size: 18px; font-weight: 500; cursor: pointer; transition: all .12s;
}
.pin-btn:hover { background: var(--bg2); border-color: var(--accent); color: var(--accent); }
.pin-btn:active { transform: scale(.95); }
.pin-confirm { background: var(--accent) !important; border-color: var(--accent) !important; color: #000 !important; font-weight: 700; }
.pin-del { color: var(--text2); font-size: 20px; }

/* === APP LAYOUT === */
.app-wrapper { display: flex; height: 100vh; overflow: hidden; }

/* === SIDEBAR === */
.sidebar {
  width: 220px; min-width: 220px; background: var(--bg2); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 24px 0; transition: transform .3s;
  z-index: 100;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 10px; padding: 0 20px 24px;
  border-bottom: 1px solid var(--border); margin-bottom: 8px;
}
.sidebar-logo span { font-size: 16px; font-weight: 700; color: var(--accent); }
.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 2px; padding: 8px 12px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px;
  color: var(--text2); text-decoration: none; font-size: 13px; font-weight: 500; transition: all .15s;
}
.nav-item svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; flex-shrink: 0; }
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: rgba(245,158,11,.12); color: var(--accent); }
.sidebar-footer { padding: 12px 12px 0; border-top: 1px solid var(--border); }
.logout-btn {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px;
  color: var(--text3); text-decoration: none; font-size: 12px; transition: all .15s;
}
.logout-btn svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 2; }
.logout-btn:hover { color: var(--red); }

/* === MAIN CONTENT === */
.main-content { flex: 1; overflow-y: auto; display: flex; flex-direction: column; min-width: 0; }

/* === TOPBAR === */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg2); border-bottom: 1px solid var(--border);
  padding: 0 24px; height: 60px; display: flex; align-items: center; gap: 16px;
}
.menu-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--text2); }
.menu-toggle svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; }
.topbar-title { font-size: 15px; font-weight: 600; flex: 1; }
.topbar-controls { display: flex; align-items: center; gap: 10px; }
.topbar-controls select {
  background: var(--bg3); border: 1px solid var(--border); color: var(--text);
  padding: 6px 10px; border-radius: 8px; font-size: 12px; cursor: pointer;
}
.date-nav { display: flex; align-items: center; gap: 6px; }
.date-nav button {
  background: var(--bg3); border: 1px solid var(--border); color: var(--text2);
  width: 28px; height: 28px; border-radius: 6px; cursor: pointer; font-size: 14px; transition: all .15s;
}
.date-nav button:hover { border-color: var(--accent); color: var(--accent); }
#dateLabel { font-size: 12px; color: var(--text2); min-width: 100px; text-align: center; }

/* === VIEWS === */
.view { display: none; padding: 24px; animation: fadeIn .2s ease; }
.view.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* === KPI GRID === */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px; margin-bottom: 20px; }
.kpi-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; display: flex; flex-direction: column; gap: 8px; transition: border-color .2s;
}
.kpi-card:hover { border-color: var(--accent); }
.kpi-label { font-size: 11px; color: var(--text2); text-transform: uppercase; letter-spacing: .06em; }
.kpi-value { font-size: 24px; font-weight: 700; line-height: 1; }
.kpi-sub { font-size: 11px; color: var(--text3); }
.kpi-icon { width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center; margin-bottom: 4px; }
.kpi-icon svg { width: 17px; height: 17px; stroke: currentColor; fill: none; stroke-width: 2; }
.c-yellow { color: var(--accent); }
.c-green  { color: var(--green); }
.c-blue   { color: var(--blue); }
.c-red    { color: var(--red); }
.c-purple { color: var(--purple); }
.bg-yellow { background: rgba(245,158,11,.12); color: var(--accent); }
.bg-green  { background: rgba(16,185,129,.12); color: var(--green); }
.bg-blue   { background: rgba(59,130,246,.12); color: var(--blue); }
.bg-red    { background: rgba(239,68,68,.12); color: var(--red); }
.bg-purple { background: rgba(139,92,246,.12); color: var(--purple); }

/* === CHARTS === */
.charts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.chart-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
}
.chart-card.wide { grid-column: 1 / -1; }
.chart-header { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 16px; }
.chart-header h3 { font-size: 13px; font-weight: 600; }
.chart-subtitle { font-size: 11px; color: var(--text3); }

/* Canvas must live inside a div with explicit height — Chart.js needs this */
.chart-wrap { position: relative; width: 100%; height: 260px; }
.chart-wrap.tall   { height: 300px; }
.chart-wrap.short  { height: 220px; }
.chart-card canvas { display: block; }

/* === UPLOAD === */
.upload-container { max-width: 600px; margin: 0 auto; }
.upload-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; text-align: center;
}
.upload-card h2 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.upload-card > p { color: var(--text2); font-size: 13px; margin-bottom: 24px; }
.drop-zone {
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 40px 24px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  transition: all .2s; cursor: pointer;
}
.drop-zone:hover, .drop-zone.dragover { border-color: var(--accent); background: rgba(245,158,11,.04); }
.drop-zone p { font-size: 14px; color: var(--text2); }
.drop-zone span { font-size: 12px; color: var(--text3); }
.btn-primary {
  display: inline-block; background: var(--accent); color: #000; font-weight: 600;
  padding: 9px 20px; border-radius: 8px; cursor: pointer; font-size: 13px;
  border: none; transition: all .15s;
}
.btn-primary:hover { background: var(--accent2); }
.upload-status {
  margin-top: 16px; padding: 12px 16px; border-radius: 8px; font-size: 13px; text-align: left;
}
.upload-status.success { background: rgba(16,185,129,.1); border: 1px solid var(--green); color: var(--green); }
.upload-status.error   { background: rgba(239,68,68,.1); border: 1px solid var(--red); color: var(--red); }
.upload-status.loading { background: var(--bg3); border: 1px solid var(--border); color: var(--text2); }
.hidden { display: none !important; }
.upload-history { margin-top: 24px; text-align: left; }
.upload-history h4 { font-size: 12px; color: var(--text2); margin-bottom: 10px; text-transform: uppercase; letter-spacing: .06em; }
.date-chip {
  display: inline-block; background: var(--bg3); border: 1px solid var(--border);
  color: var(--text2); padding: 4px 10px; border-radius: 20px; font-size: 11px; margin: 3px;
  cursor: pointer; transition: all .15s;
}
.date-chip:hover { border-color: var(--accent); color: var(--accent); }

/* === TOAST === */
.toast {
  position: fixed; bottom: 24px; right: 24px; background: var(--bg3);
  border: 1px solid var(--border); padding: 12px 18px; border-radius: 10px;
  font-size: 13px; color: var(--text); opacity: 0; transform: translateY(8px);
  transition: all .25s; pointer-events: none; z-index: 9999;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* === LOADING STATE === */
.loading-state {
  display: flex; align-items: center; justify-content: center; height: 200px;
  color: var(--text3); font-size: 13px;
}
.spinner {
  width: 24px; height: 24px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin .7s linear infinite; margin-right: 10px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === NO DATA === */
.no-data {
  text-align: center; padding: 60px 24px; color: var(--text3);
}
.no-data svg { margin-bottom: 14px; opacity: .4; }
.no-data h3 { font-size: 15px; font-weight: 600; color: var(--text2); margin-bottom: 8px; }
.no-data p { font-size: 13px; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .sidebar {
    position: fixed; left: 0; top: 0; height: 100%;
    transform: translateX(-100%); box-shadow: var(--shadow);
  }
  .sidebar.open { transform: translateX(0); }
  .menu-toggle { display: block; }
  .charts-grid { grid-template-columns: 1fr; }
  .chart-card.wide { grid-column: 1; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .topbar { padding: 0 16px; }
  .view { padding: 16px; }
}
@media (max-width: 400px) {
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .kpi-value { font-size: 20px; }
}