/* ===== Game Analytics Dashboard - Global Styles ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-base:    #070b14;
  --bg-card:    rgba(255,255,255,0.04);
  --bg-card-h:  rgba(255,255,255,0.07);
  --border:     rgba(255,255,255,0.08);
  --border-h:   rgba(0,212,255,0.3);
  --text-1:     #f0f4ff;
  --text-2:     #8b9bb4;
  --text-3:     #4a5568;
  --accent:     #00d4ff;
  --accent2:    #7c3aed;
  --green:      #10b981;
  --amber:      #f59e0b;
  --red:        #ef4444;
  --sidebar-w:  220px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg-base);
  color: var(--text-1);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }

/* ─── Layout ─── */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: rgba(255,255,255,0.03);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; height: 100vh;
  z-index: 100; padding: 24px 0;
  backdrop-filter: blur(20px);
}

.sidebar-logo {
  padding: 0 20px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.sidebar-logo h1 {
  font-size: 16px; font-weight: 700; color: var(--text-1);
  display: flex; align-items: center; gap: 8px;
}
.sidebar-logo h1 span { color: var(--accent); }

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 20px; cursor: pointer; transition: all .2s;
  color: var(--text-2); text-decoration: none; font-size: 13.5px;
  border-left: 3px solid transparent;
}
.nav-item:hover, .nav-item.active {
  color: var(--text-1); background: var(--bg-card-h);
  border-left-color: var(--accent);
}
.nav-item svg { opacity: .7; flex-shrink: 0; }
.nav-item.active svg { opacity: 1; color: var(--accent); }

.nav-section { padding: 12px 20px 4px; font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: .08em; }

.sidebar-footer { margin-top: auto; padding: 0 20px; }
.btn-logout {
  width: 100%; padding: 9px; border-radius: 8px; border: 1px solid var(--border);
  background: transparent; color: var(--text-2); cursor: pointer; font-size: 13px;
  display: flex; align-items: center; justify-content: center; gap: 6px; transition: all .2s;
}
.btn-logout:hover { border-color: var(--red); color: var(--red); }

.main-content {
  margin-left: var(--sidebar-w);
  flex: 1; display: flex; flex-direction: column; min-height: 100vh;
}

.topbar {
  padding: 16px 28px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(7,11,20,.8); backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 50;
}
.topbar-title { font-size: 18px; font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.page { padding: 24px 28px; }

/* ─── Date Filter ─── */
.filter-bar {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 20px; margin-bottom: 24px;
  flex-wrap: wrap;
}
.filter-bar label { color: var(--text-2); font-size: 13px; white-space: nowrap; }
.filter-bar input[type="date"], .filter-bar select {
  background: rgba(255,255,255,0.06); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text-1); padding: 6px 12px; font-size: 13px;
  cursor: pointer; transition: border-color .2s;
}
.filter-bar input[type="date"]:focus, .filter-bar select:focus {
  outline: none; border-color: var(--accent);
}

/* ─── KPI Cards ─── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px; margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; padding: 20px; position: relative; overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.kpi-card:hover { border-color: var(--border-h); transform: translateY(-2px); }
.kpi-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity .3s;
}
.kpi-card:hover::before { opacity: 1; }

.kpi-label { font-size: 12px; color: var(--text-2); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 8px; }
.kpi-value { font-size: 28px; font-weight: 700; line-height: 1; margin-bottom: 4px; }
.kpi-value.green  { color: var(--green); }
.kpi-value.accent { color: var(--accent); }
.kpi-value.purple { color: var(--accent2); }
.kpi-value.amber  { color: var(--amber); }

.kpi-change { font-size: 12px; color: var(--text-2); display: flex; align-items: center; gap: 4px; }
.kpi-change.up   { color: var(--green); }
.kpi-change.down { color: var(--red); }
.kpi-sparkline   { height: 40px; margin-top: 12px; }

/* ─── Chart Cards ─── */
.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px; margin-bottom: 24px;
}
.chart-grid.full { grid-template-columns: 1fr; }
.chart-grid.three { grid-template-columns: 2fr 1fr; }

.chart-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; padding: 20px;
  transition: border-color .2s;
}
.chart-card:hover { border-color: rgba(255,255,255,0.12); }

.chart-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px;
}
.chart-title { font-size: 14px; font-weight: 600; }
.chart-subtitle { font-size: 12px; color: var(--text-2); margin-top: 2px; }

.chart-body { height: 280px; }
.chart-body.tall { height: 360px; }

/* ─── Table ─── */
.table-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden; margin-bottom: 24px;
}
.table-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  padding: 10px 16px; text-align: left; font-size: 11.5px; color: var(--text-2);
  text-transform: uppercase; letter-spacing: .06em; border-bottom: 1px solid var(--border);
  white-space: nowrap; cursor: pointer; user-select: none;
}
.data-table th:hover { color: var(--text-1); }
.data-table th.sorted { color: var(--accent); }
.data-table td {
  padding: 11px 16px; font-size: 13px; border-bottom: 1px solid rgba(255,255,255,.04);
  white-space: nowrap;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-card-h); }
.data-table td.num { font-variant-numeric: tabular-nums; }
.rank-num { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; font-size: 11px; font-weight: 700; }
.rank-1 { background: linear-gradient(135deg,#f59e0b,#d97706); color: #000; }
.rank-2 { background: linear-gradient(135deg,#9ca3af,#6b7280); color: #000; }
.rank-3 { background: linear-gradient(135deg,#a16207,#92400e); color: #fff; }
.bar-cell { display: flex; align-items: center; gap: 8px; }
.bar-bg { flex: 1; height: 4px; background: rgba(255,255,255,.08); border-radius: 2px; min-width: 60px; }
.bar-fill { height: 100%; border-radius: 2px; background: linear-gradient(90deg, var(--accent), var(--accent2)); }

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 8px; font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all .2s; border: none; text-decoration: none;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), #0099bb); color: #000; }
.btn-primary:hover { opacity: .85; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,212,255,.3); }
.btn-ghost { background: transparent; color: var(--text-2); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--border-h); color: var(--text-1); }
.btn-danger { background: transparent; color: var(--red); border: 1px solid rgba(239,68,68,.3); }
.btn-danger:hover { background: rgba(239,68,68,.1); }

/* ─── Tag ─── */
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px;
}
.tag-green  { background: rgba(16,185,129,.15); color: var(--green); }
.tag-accent { background: rgba(0,212,255,.12);  color: var(--accent); }
.tag-amber  { background: rgba(245,158,11,.12); color: var(--amber); }

/* ─── Select buttons ─── */
.btn-group { display: flex; gap: 4px; }
.btn-group .btn-seg {
  padding: 5px 12px; font-size: 12px; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--border); background: transparent; color: var(--text-2); transition: all .15s;
}
.btn-group .btn-seg.active, .btn-group .btn-seg:hover {
  background: var(--bg-card-h); color: var(--text-1); border-color: var(--border-h);
}

/* ─── Login Page ─── */
.login-bg {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at 60% 20%, rgba(0,212,255,.08) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(124,58,237,.08) 0%, transparent 50%),
              var(--bg-base);
}
.login-card {
  width: 380px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; padding: 40px; backdrop-filter: blur(20px);
  box-shadow: 0 24px 64px rgba(0,0,0,.5);
}
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo h1 { font-size: 22px; font-weight: 700; }
.login-logo h1 span { color: var(--accent); }
.login-logo p { color: var(--text-2); font-size: 13px; margin-top: 6px; }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 7px; }
.form-group input {
  width: 100%; padding: 10px 14px; background: rgba(255,255,255,.06);
  border: 1px solid var(--border); border-radius: 10px; color: var(--text-1);
  font-size: 14px; transition: border-color .2s; outline: none;
}
.form-group input:focus { border-color: var(--accent); }
.form-group input::placeholder { color: var(--text-3); }

.btn-login {
  width: 100%; padding: 11px; border-radius: 10px; font-size: 14px; font-weight: 600;
  background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
  color: #fff; border: none; cursor: pointer; transition: all .2s; margin-top: 4px;
}
.btn-login:hover { opacity: .88; box-shadow: 0 6px 24px rgba(0,212,255,.2); transform: translateY(-1px); }

.error-msg { color: var(--red); font-size: 12.5px; margin-top: 8px; }

/* ─── Upload Zone ─── */
.upload-zone {
  border: 2px dashed var(--border); border-radius: 16px; padding: 48px 24px;
  text-align: center; cursor: pointer; transition: all .3s; position: relative;
}
.upload-zone.drag-over, .upload-zone:hover {
  border-color: var(--accent); background: rgba(0,212,255,.04);
}
.upload-zone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.upload-icon { font-size: 40px; margin-bottom: 12px; }
.upload-title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.upload-hint { color: var(--text-2); font-size: 13px; }

/* ─── Preview Table ─── */
.preview-wrapper { overflow-x: auto; max-height: 320px; overflow-y: auto; border-radius: 8px; border: 1px solid var(--border); }
.preview-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.preview-table th { padding: 8px 12px; background: rgba(255,255,255,.05); color: var(--text-2); border-bottom: 1px solid var(--border); white-space: nowrap; position: sticky; top: 0; }
.preview-table td { padding: 7px 12px; border-bottom: 1px solid rgba(255,255,255,.04); white-space: nowrap; }

/* ─── Toast ─── */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 12px 18px; border-radius: 10px; font-size: 13px; min-width: 220px;
  backdrop-filter: blur(12px); border: 1px solid;
  animation: slideIn .3s ease; box-shadow: 0 8px 24px rgba(0,0,0,.4);
}
.toast.success { background: rgba(16,185,129,.15); border-color: rgba(16,185,129,.3); color: var(--green); }
.toast.error   { background: rgba(239,68,68,.15);  border-color: rgba(239,68,68,.3);  color: var(--red); }
.toast.info    { background: rgba(0,212,255,.12);   border-color: rgba(0,212,255,.3);  color: var(--accent); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ─── Loading ─── */
.loading-spinner {
  display: inline-block; width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,.1); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay {
  position: absolute; inset: 0; background: rgba(7,11,20,.6);
  display: flex; align-items: center; justify-content: center; border-radius: 16px; z-index: 10;
}

/* ─── Responsive ─── */
@media (max-width: 1100px) { .chart-grid { grid-template-columns: 1fr; } }
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main-content { margin-left: 0; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}