/* ============================================================
   BrainPing User Portal - CSS
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #6c5ce7;
  --accent: #a29bfe;
  --success: #00b894;
  --danger: #e17055;
  --warning: #fdcb6e;
  --bg: #f8f9fa;
  --card: #ffffff;
  --text: #2d3436;
  --muted: #636e72;
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); }

/* Login */
.login-screen { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.login-card { background: var(--card); padding: 40px; border-radius: 16px; text-align: center; width: 90%; max-width: 380px; box-shadow: 0 8px 32px rgba(0,0,0,0.15); }
.login-card h1 { font-size: 2rem; margin-bottom: 4px; }
.login-card p { color: var(--muted); margin-bottom: 20px; }
.login-card input { width: 100%; padding: 12px; border: 2px solid #dfe6e9; border-radius: 8px; font-size: 16px; margin-bottom: 12px; }
.login-card input:focus { border-color: var(--primary); outline: none; }
.login-card button { width: 100%; padding: 12px; background: var(--primary); color: white; border: none; border-radius: 8px; font-size: 16px; cursor: pointer; }
.login-card button:hover { opacity: 0.9; }
.msg { color: var(--danger); margin-top: 8px; font-size: 14px; }
.hidden { display: none !important; }

/* App Layout */
.app { display: flex; flex-direction: column; min-height: 100vh; }

/* Top Nav */
.top-nav { background: var(--card); padding: 12px 20px; display: flex; align-items: center; gap: 16px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 100; overflow-x: auto; }
.nav-brand { font-weight: 700; font-size: 1.2rem; white-space: nowrap; }
.nav-tabs { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.nav-tabs a { padding: 8px 14px; border-radius: 8px; text-decoration: none; color: var(--muted); font-size: 14px; white-space: nowrap; transition: all 0.2s; }
.nav-tabs a.active { background: var(--primary); color: white; }
.nav-tabs a:hover:not(.active) { background: #f0f0f0; }
.btn-logout { background: none; border: 1px solid var(--danger); color: var(--danger); padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 13px; white-space: nowrap; }

/* Content */
.content { padding: 20px; max-width: 800px; margin: 0 auto; width: 100%; }

/* Tab sections */
.tab-section { display: none; }
.tab-section.active { display: block; }

/* Cards */
.card { background: var(--card); border-radius: 12px; padding: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }

/* Stats Row */
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 16px 0; }
.stat-card { background: var(--card); border-radius: 12px; padding: 16px; text-align: center; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.stat-icon { font-size: 1.5rem; }
.stat-value { font-size: 1.8rem; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 0.85rem; color: var(--muted); }
.streak-card { border: 2px solid var(--warning); }

/* Welcome */
.welcome-card { padding: 16px 0; }
.welcome-card h2 { font-size: 1.4rem; }

/* Health gauge */
.health-gauge { background: #dfe6e9; border-radius: 12px; height: 24px; overflow: hidden; margin: 12px 0; }
.gauge-fill { height: 100%; background: linear-gradient(90deg, var(--danger), var(--warning), var(--success)); border-radius: 12px; transition: width 0.5s; }
.health-value { text-align: center; font-size: 1.5rem; font-weight: 700; }
.upgrade-prompt { text-align: center; padding: 16px; background: #ffeaa7; border-radius: 8px; }

/* Activity list */
.activity-list { display: flex; flex-direction: column; gap: 8px; }
.activity-item { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid #f0f0f0; }
.activity-item:last-child { border: none; }

/* Calendar */
.calendar-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; text-align: center; }
.cal-header { font-weight: 600; font-size: 0.8rem; color: var(--muted); padding: 6px; }
.cal-day { padding: 10px 4px; border-radius: 8px; font-size: 0.85rem; cursor: default; min-height: 40px; display: flex; align-items: center; justify-content: center; }
.cal-day.green { background: #d4edda; color: #155724; }
.cal-day.red { background: #f8d7da; color: #721c24; }
.cal-day.gray { background: #e9ecef; color: #6c757d; }
.cal-day.empty { }
.calendar-legend { display: flex; gap: 16px; margin-top: 12px; justify-content: center; }
.legend-item { display: flex; align-items: center; gap: 4px; font-size: 0.8rem; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot.green { background: var(--success); }
.dot.red { background: var(--danger); }
.dot.gray { background: #adb5bd; }
.mini-stat { text-align: center; }

/* Assessments */
.assessment-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.assessment-card { text-align: center; }
.assess-icon { font-size: 2rem; margin-bottom: 8px; }
.assess-score { font-size: 2rem; font-weight: 700; color: var(--primary); }

/* Badges */
.badges-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.badge-card { background: var(--card); border-radius: 12px; padding: 16px; text-align: center; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.badge-card.locked { opacity: 0.4; filter: grayscale(0.8); }
.badge-icon { font-size: 2rem; }
.badge-name { font-weight: 600; margin-top: 8px; font-size: 0.9rem; }
.badge-desc { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }

/* Leaderboard */
.my-rank-bar { background: #ffeaa7; padding: 12px; border-radius: 8px; text-align: center; font-weight: 600; }

/* Plans */
.plans-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 12px; }
.plan-card { border: 2px solid #dfe6e9; border-radius: 12px; padding: 20px; text-align: center; }
.plan-card.current { border-color: var(--primary); background: #f8f7ff; }
.plan-price { font-size: 1.5rem; font-weight: 700; color: var(--primary); margin: 8px 0; }
.plan-features { list-style: none; text-align: left; margin: 12px 0; }
.plan-features li { padding: 4px 0; font-size: 0.9rem; }
.plan-features li::before { content: '✅ '; }

/* Table */
.table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.table th, .table td { padding: 10px; text-align: left; border-bottom: 1px solid #f0f0f0; }
.table th { font-weight: 600; color: var(--muted); }
.table tr.highlight { background: #f8f7ff; }

/* Forms */
.input { width: 100%; padding: 10px; border: 2px solid #dfe6e9; border-radius: 8px; font-size: 14px; }
.input:focus { border-color: var(--primary); outline: none; }
.form-group { margin-bottom: 12px; }
.form-group label { display: block; margin-bottom: 4px; font-weight: 500; font-size: 0.9rem; }
.btn { padding: 10px 20px; border: none; border-radius: 8px; font-size: 14px; cursor: pointer; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { opacity: 0.9; }
.btn-sm { padding: 6px 12px; font-size: 13px; }

/* Toast */
.toast { position: fixed; top: 80px; right: 20px; padding: 12px 20px; border-radius: 8px; color: white; font-size: 14px; z-index: 9999; transition: opacity 0.3s; }
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }

/* Mobile */
@media (max-width: 600px) {
  .stats-row { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat-value { font-size: 1.4rem; }
  .content { padding: 12px; }
  .top-nav { padding: 8px 12px; }
  .nav-tabs a { padding: 6px 10px; font-size: 12px; }
  .assessment-cards { grid-template-columns: 1fr; }
}