/* =====================================================
   Design System — Vixlens CRO Dashboard
   Tema: Dark premium com accent dourado
   Princípios: Baixo esforço cognitivo, sofisticado, fluido
   ===================================================== */

:root {
  --bg:  #0c0c0e;
  --bg2: #141418;
  --bg3: #1c1c22;
  --bg4: #24242c;
  --bdr: rgba(255,255,255,.06);
  --bdr2: rgba(255,255,255,.1);
  --t1: #eeeef0;
  --t2: #8e8e9a;
  --t3: #5c5c6a;
  --accent: #c9a84c;
  --accent2: #dfc26e;
  --accent-bg: rgba(201,168,76,.08);
  --accent-bg2: rgba(201,168,76,.14);

  /* Cores semanticas de meta — IMUTAVEIS */
  --red:    #f06060;
  --yellow: #e8b830;
  --green:  #34d399;
  --orange: #f59e0b;
  --blue:   #60a5fa;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.5);
  --shadow-glow: 0 0 20px rgba(201,168,76,.08);

  /* Transitions */
  --ease: cubic-bezier(.4, 0, .2, 1);
  --dur: .2s;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, system-ui, sans-serif;
  background: var(--bg);
  color: var(--t1);
  min-height: 100vh;
  display: flex;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

/* Selection */
::selection { background: rgba(201,168,76,.3); color: #fff; }

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,.18); }

/* =====================================================
   Sidebar
   ===================================================== */
.sidebar {
  width: 240px;
  min-width: 240px;
  background: linear-gradient(180deg, #0a0a0e 0%, #080810 100%);
  border-right: 1px solid var(--bdr);
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  height: 100vh;
  position: sticky;
  top: 0;
  z-index: 10;
}

.sidebar-logo {
  padding: 0 24px 32px;
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: lowercase;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 12px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border: none;
  background: transparent;
  color: var(--t2);
  font-size: 13px;
  font-weight: 400;
  cursor: pointer;
  border-radius: 8px;
  transition: all var(--dur) var(--ease);
  width: 100%;
  text-align: left;
  position: relative;
  letter-spacing: .01em;
}
.nav-btn:hover {
  background: var(--accent-bg);
  color: var(--t1);
}
.nav-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.nav-btn.active {
  background: var(--accent-bg2);
  color: var(--accent);
  font-weight: 500;
}
.nav-btn.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}
.nav-btn svg { width: 18px; height: 18px; opacity: .55; flex-shrink: 0; transition: opacity var(--dur) var(--ease); }
.nav-btn:hover svg, .nav-btn.active svg { opacity: .85; }

.sidebar-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--bdr);
}

/* =====================================================
   Main Content Area
   ===================================================== */
.main {
  flex: 1;
  padding: 28px 36px;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
}

/* =====================================================
   Controls Bar
   ===================================================== */
.controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--bdr);
}

.op-pill {
  padding: 7px 16px;
  border: 1px solid var(--bdr2);
  border-radius: 24px;
  background: transparent;
  color: var(--t2);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  letter-spacing: .02em;
}
.op-pill:hover { border-color: rgba(201,168,76,.3); color: var(--t1); }
.op-pill:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.op-pill.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-bg);
  box-shadow: 0 0 12px rgba(201,168,76,.1);
}

.month-select {
  background: var(--bg3);
  border: 1px solid var(--bdr2);
  border-radius: 8px;
  color: var(--t1);
  padding: 7px 12px;
  font-size: 12px;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease);
}
.month-select:hover { border-color: rgba(255,255,255,.15); }
.month-select:focus { border-color: var(--accent); outline: none; }

.period-tab {
  padding: 6px 12px;
  border: none;
  background: transparent;
  color: var(--t3);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--dur) var(--ease);
}
.period-tab:hover { color: var(--t2); }
.period-tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.period-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* =====================================================
   Cards — Base Layer
   ===================================================== */
.card {
  background: var(--bg2);
  border: 1px solid var(--bdr);
  border-radius: 12px;
  padding: 20px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover {
  border-color: var(--bdr2);
}

/* =====================================================
   KPI Grid & Cards
   ===================================================== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg2);
  border: 1px solid var(--bdr);
  border-radius: 12px;
  padding: 20px;
  transition: all .25s var(--ease);
  position: relative;
  overflow: hidden;
}
.kpi-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(201,168,76,.03) 0%, transparent 70%);
  pointer-events: none;
}
.kpi-card:hover {
  border-color: var(--bdr2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.kpi-label {
  font-size: 11px;
  color: var(--t3);
  text-transform: uppercase;
  letter-spacing: .8px;
  font-weight: 500;
  margin-bottom: 6px;
}

.kpi-value {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.2;
}

.kpi-sub {
  font-size: 12px;
  color: var(--t2);
  margin-top: 6px;
  line-height: 1.4;
}

.kpi-delta {
  font-size: 12px;
  margin-top: 4px;
}

.delta-up { color: var(--green); }
.delta-down { color: var(--red); }

/* =====================================================
   Badges
   ===================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .02em;
}
.br { background: rgba(240,96,96,.12); color: var(--red); }
.by { background: rgba(232,184,48,.12); color: var(--yellow); }
.bg { background: rgba(52,211,153,.12); color: var(--green); }
.bo { background: rgba(245,158,11,.12); color: var(--orange); }

/* =====================================================
   Data Tables
   ===================================================== */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  padding: 10px 14px;
  color: var(--t3);
  font-weight: 600;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .8px;
  border-bottom: 1px solid var(--bdr2);
  background: rgba(255,255,255,.02);
  position: sticky;
  top: 0;
  z-index: 1;
}

.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--bdr);
  transition: background var(--dur) var(--ease);
}

.data-table tbody tr {
  transition: background var(--dur) var(--ease);
}
.data-table tbody tr:hover td {
  background: var(--accent-bg);
}

/* Zebra striping subtle */
.data-table tbody tr:nth-child(even) td {
  background: rgba(255,255,255,.015);
}
.data-table tbody tr:nth-child(even):hover td {
  background: var(--accent-bg);
}

/* =====================================================
   Charts
   ===================================================== */
.chart-container {
  position: relative;
  width: 100%;
  height: 300px;
}

/* =====================================================
   Tab Content
   ===================================================== */
.tab-content { display: none; animation: fadeIn .3s var(--ease); }
.tab-content.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tab headers */
.tab-content > h2 {
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 20px;
  color: var(--t2);
  letter-spacing: .01em;
}

/* =====================================================
   Status Chips & Clusters
   ===================================================== */
.chip-p1 { color: var(--red); }
.chip-p2 { color: var(--yellow); }
.chip-p3 { color: var(--orange); }
.chip-p4 { color: var(--green); }

.cluster-a { color: var(--green); }
.cluster-b { color: var(--yellow); }
.cluster-c { color: var(--orange); }
.cluster-d { color: var(--red); }
.cluster-e { color: var(--blue); }

/* =====================================================
   Login
   ===================================================== */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
  background: radial-gradient(ellipse at 50% 30%, rgba(201,168,76,.04) 0%, var(--bg) 70%);
}

.login-box {
  background: var(--bg2);
  border: 1px solid var(--bdr2);
  border-radius: 16px;
  padding: 48px 40px;
  width: 380px;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(201,168,76,.04);
}

.login-box h2 {
  color: var(--accent);
  font-weight: 300;
  letter-spacing: 3px;
  margin-bottom: 4px;
  font-size: 28px;
  text-transform: lowercase;
}

.login-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg3);
  border: 1px solid var(--bdr2);
  border-radius: 8px;
  color: var(--t1);
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  margin-bottom: 12px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.login-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(201,168,76,.15);
  outline: none;
}
.login-input::placeholder { color: var(--t3); }

.login-btn {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, var(--accent) 0%, #b89a40 100%);
  color: #0c0c0e;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
  letter-spacing: .03em;
  transition: all var(--dur) var(--ease);
}
.login-btn:hover {
  box-shadow: 0 4px 16px rgba(201,168,76,.3);
  transform: translateY(-1px);
}
.login-btn:active { transform: translateY(0); }
.login-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.login-error {
  color: var(--red);
  font-size: 13px;
  margin-top: 10px;
  display: none;
}

/* =====================================================
   Upload Zones
   ===================================================== */
.upload-zone {
  border: 2px dashed rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 36px;
  text-align: center;
  cursor: pointer;
  transition: all .25s var(--ease);
  background: var(--bg2);
}
.upload-zone:hover {
  border-color: rgba(201,168,76,.4);
  background: rgba(201,168,76,.03);
  box-shadow: var(--shadow-glow);
}
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(201,168,76,.06);
  box-shadow: 0 0 30px rgba(201,168,76,.1);
}

/* =====================================================
   Config Tab
   ===================================================== */
.cfg-section {
  background: var(--bg2);
  border: 1px solid var(--bdr);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  transition: border-color var(--dur) var(--ease);
}
.cfg-section:hover { border-color: var(--bdr2); }

.cfg-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.cfg-desc { font-size: 12px; color: var(--t3); margin-bottom: 16px; }
.cfg-grid { display: grid; gap: 10px; }
.cfg-grid-6 { grid-template-columns: repeat(6, 1fr); }
.cfg-field {}
.cfg-label {
  display: block;
  font-size: 10px;
  color: var(--t3);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: .8px;
  font-weight: 500;
}

.cfg-input {
  width: 100%;
  padding: 8px 10px;
  background: var(--bg3);
  border: 1px solid var(--bdr2);
  border-radius: 6px;
  color: var(--t1);
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  transition: border-color var(--dur) var(--ease);
}
.cfg-input:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 2px rgba(201,168,76,.12); }

.cfg-textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg3);
  border: 1px solid var(--bdr2);
  border-radius: 6px;
  color: var(--t1);
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  resize: vertical;
  transition: border-color var(--dur) var(--ease);
}
.cfg-textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 2px rgba(201,168,76,.12); }

.cfg-actions { display: flex; align-items: center; gap: 10px; margin-top: 14px; }

.cfg-btn {
  padding: 8px 18px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  letter-spacing: .02em;
}
.cfg-btn-save {
  background: linear-gradient(135deg, var(--accent) 0%, #b89a40 100%);
  color: #0c0c0e;
}
.cfg-btn-save:hover { box-shadow: 0 2px 12px rgba(201,168,76,.25); transform: translateY(-1px); }
.cfg-btn-reset { background: var(--bg3); color: var(--t2); border: 1px solid var(--bdr2); }
.cfg-btn-reset:hover { color: var(--t1); border-color: rgba(255,255,255,.15); }

.cfg-status { font-size: 12px; font-weight: 500; }
.cfg-hint { font-size: 12px; margin-left: auto; }

.cfg-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.cfg-table th {
  text-align: left; padding: 8px 10px; color: var(--t3); font-weight: 600;
  font-size: 10px; text-transform: uppercase; letter-spacing: .8px;
  border-bottom: 1px solid var(--bdr2);
}
.cfg-table td { padding: 8px 10px; border-bottom: 1px solid var(--bdr); }
.cfg-table .cfg-input { min-width: 90px; }

/* =====================================================
   Filter Buttons (Clientes tab)
   ===================================================== */
.filter-btn {
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--bdr2);
  border-radius: 6px;
  color: var(--t2);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.filter-btn:hover { background: var(--bg3); color: var(--t1); border-color: rgba(255,255,255,.15); }
.filter-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.filter-btn.active {
  background: var(--accent-bg2);
  color: var(--accent);
  border-color: var(--accent);
}
.filter-clear { color: var(--t3); font-size: 10px; transition: color var(--dur) var(--ease); }
.filter-clear:hover { color: var(--red); }

/* =====================================================
   Loading state
   ===================================================== */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.loading {
  background: linear-gradient(90deg, var(--bg3) 25%, var(--bg4) 50%, var(--bg3) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s var(--ease) infinite;
  border-radius: 8px;
}

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main { padding: 16px 14px; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .controls { gap: 8px; }
  .cfg-grid-6 { grid-template-columns: repeat(3, 1fr); }
  .kpi-value { font-size: 22px; }
  .kpi-card { padding: 16px; }
}

@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .op-pill { padding: 6px 12px; font-size: 11px; }
}