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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #232636;
  --border: #2e3149;
  --accent: #7c6af7;
  --accent2: #4ecdc4;
  --pass: #4ade80;
  --fail: #f87171;
  --text: #e2e4f0;
  --text-muted: #8b8fa8;
  --radius: 12px;
  --font: 'Inter', system-ui, sans-serif;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── Views ── */
.view { min-height: 100vh; }
.hidden { display: none !important; }

/* ── Login ── */
#view-login {
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 60% 30%, #1e1b4b 0%, var(--bg) 70%);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 8px 40px rgba(0,0,0,.5);
}

.login-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.75rem;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-card label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-bottom: .35rem;
  margin-top: 1rem;
}

.login-card input {
  width: 100%;
  padding: .65rem .85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .95rem;
  outline: none;
  transition: border-color .2s;
}
.login-card input:focus { border-color: var(--accent); }

.error {
  color: var(--fail);
  font-size: .85rem;
  margin-top: .75rem;
  padding: .5rem .75rem;
  background: rgba(248,113,113,.1);
  border-radius: 6px;
  border-left: 3px solid var(--fail);
}

.login-card button[type="submit"] {
  width: 100%;
  margin-top: 1.5rem;
  padding: .75rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s, transform .1s;
}
.login-card button[type="submit"]:hover { opacity: .88; }
.login-card button[type="submit"]:active { transform: scale(.98); }
.login-card button[type="submit"]:disabled { opacity: .5; cursor: not-allowed; }

/* ── Profile layout ── */
.profile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.profile-header h1 {
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-logout {
  padding: .4rem .9rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  font-size: .85rem;
  transition: border-color .2s, color .2s;
}
.btn-logout:hover { border-color: var(--fail); color: var(--fail); }

.profile-main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: grid;
  gap: 1.5rem;
}

/* ── Card ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.card h2 {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
}

/* ── Info grid ── */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: .85rem;
}

.info-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .75rem 1rem;
}

.info-item .label {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  margin-bottom: .25rem;
}

.info-item .value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  word-break: break-word;
}

.info-item .value.accent  { color: var(--accent); }
.info-item .value.accent2 { color: var(--accent2); }
.info-item .value.pass    { color: var(--pass); }

/* ── Tooltip ── */
.graph-tooltip {
  position: fixed;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .45rem .75rem;
  font-size: .8rem;
  line-height: 1.5;
  pointer-events: none;
  opacity: 0;
  transition: opacity .12s;
  z-index: 200;
  box-shadow: 0 4px 16px rgba(0,0,0,.4);
}
.graph-tooltip.visible { opacity: 1; }
.graph-tooltip b { color: var(--accent); }

/* ── Graphs ── */
.graphs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.graph-wrap--full {
  margin-bottom: 1.5rem;
}

.graph-wrap--wide {
  grid-column: 1 / -1;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
}

.graph-wrap h3 {
  font-size: .85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  margin-bottom: .85rem;
}

.graph-wrap svg {
  width: 100%;
  height: auto;
  display: block;
}

/* SVG graph shared styles */
.graph-axis { stroke: var(--border); stroke-width: 1; }
.graph-grid  { stroke: var(--border); stroke-width: 1; stroke-dasharray: 4 4; }
.graph-label { fill: var(--text-muted); font-size: 11px; font-family: var(--font); }
.graph-line  { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.graph-dot   { fill: var(--accent); }
.graph-area  { fill: url(#areaGrad); }

/* Donut legend */
.donut-legend {
  display: flex;
  gap: 1.2rem;
  margin-top: .75rem;
  font-size: .82rem;
}
.donut-legend span { display: flex; align-items: center; gap: .4rem; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

/* ── Recent activity ── */
.activity-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.activity-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .6rem .9rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  gap: 1rem;
}

.activity-name {
  font-weight: 600;
  font-size: .9rem;
  color: var(--text);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.activity-xp {
  font-weight: 700;
  font-size: .9rem;
  color: var(--accent);
  white-space: nowrap;
}

.activity-date {
  font-size: .78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Loading shimmer */
.shimmer {
  background: linear-gradient(90deg, var(--surface2) 25%, var(--border) 50%, var(--surface2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 6px;
  height: 1.2rem;
  width: 60%;
}
@keyframes shimmer { to { background-position: -200% 0; } }

@media (max-width: 600px) {
  .profile-header { padding: 1rem; }
  .profile-main   { padding: 1rem; }
}