:root {
  --purple: #7F77DD;
  --purple-light: #EEEDFE;
  --teal: #1D9E75;
  --teal-light: #E1F5EE;
  --amber: #BA7517;
  --amber-light: #FAEEDA;
  --coral: #D85A30;
  --coral-light: #FAECE7;
  --gray: #888780;
  --gray-light: #F1EFE8;
  --bg: #0f0f0f;
  --bg2: #1a1a1a;
  --bg3: #242424;
  --border: rgba(255,255,255,0.08);
  --text: #e8e6df;
  --text2: #9c9a92;
  --text3: #5f5e5a;
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  border-bottom: 0.5px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-logo {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}
.nav-logo span { color: var(--purple); }
.nav-link {
  font-size: 13px;
  color: var(--text2);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}
.nav-link:hover, .nav-link.active { background: var(--bg3); color: var(--text); text-decoration: none; }
.nav-btn {
  font-size: 13px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  background: var(--purple);
  color: #fff;
  border: none;
  cursor: pointer;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-btn:hover { background: #534AB7; color: #fff; text-decoration: none; }

/* Layout */
.container { max-width: 900px; margin: 0 auto; padding: 24px 20px; }

/* Cards */
.card {
  background: var(--bg2);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card-sm { padding: 16px; }

/* Stat cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg2);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.stat-label { font-size: 11px; color: var(--text2); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; }
.stat-value { font-size: 28px; font-weight: 600; color: var(--text); line-height: 1; }
.stat-sub { font-size: 12px; color: var(--text3); margin-top: 4px; }

/* Category badges */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 20px;
}
.badge-FinTrack { background: rgba(127,119,221,0.15); color: #a8a2ff; }
.badge-Coursera { background: rgba(186,117,23,0.15); color: #e8a83a; }
.badge-Replit   { background: rgba(29,158,117,0.15); color: #3dcca0; }
.badge-VPS      { background: rgba(216,90,48,0.15);  color: #f08060; }
.badge-Other    { background: rgba(136,135,128,0.15); color: #aaa89f; }

/* Mood badges */
.mood-Great { color: #3dcca0; }
.mood-Good  { color: #a8a2ff; }
.mood-Okay  { color: #e8a83a; }
.mood-Tough { color: #f08060; }

/* Stars */
.stars { color: #e8a83a; letter-spacing: 1px; font-size: 13px; }

/* Section headers */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.section-title { font-size: 13px; font-weight: 500; color: var(--text2); text-transform: uppercase; letter-spacing: 0.05em; }

/* Table */
.log-table { width: 100%; border-collapse: collapse; }
.log-table th {
  text-align: left;
  font-size: 11px;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0 12px 10px;
  border-bottom: 0.5px solid var(--border);
}
.log-table td {
  padding: 12px;
  border-bottom: 0.5px solid var(--border);
  font-size: 13px;
  color: var(--text);
  vertical-align: middle;
}
.log-table tr:last-child td { border-bottom: none; }
.log-table tr { cursor: pointer; transition: background 0.1s; }
.log-table tr:hover td { background: var(--bg3); }
.log-row-detail {
  display: none;
  padding: 12px;
  background: var(--bg3);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text2);
  line-height: 1.7;
  margin-top: 4px;
}
.log-row-detail.open { display: block; }
.shipped-text { color: var(--text); max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Forms */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 12px; color: var(--text2); margin-bottom: 6px; font-weight: 500; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--bg3);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  padding: 10px 12px;
  font-family: inherit;
  transition: border-color 0.15s;
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--purple); }
.form-textarea { min-height: 80px; resize: vertical; }
.form-select option { background: var(--bg3); }

/* Star rating */
.star-rating { display: flex; gap: 8px; }
.star-btn {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text3);
  transition: color 0.15s, transform 0.1s;
  padding: 0;
}
.star-btn.active, .star-btn:hover { color: #e8a83a; transform: scale(1.1); }

/* Category select pills */
.cat-pills { display: flex; gap: 8px; flex-wrap: wrap; }
.cat-pill {
  padding: 7px 14px;
  border-radius: 20px;
  border: 0.5px solid var(--border);
  background: var(--bg3);
  color: var(--text2);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}
.cat-pill:hover { border-color: var(--purple); color: var(--text); }
.cat-pill.selected-FinTrack { background: rgba(127,119,221,0.2); border-color: var(--purple); color: #a8a2ff; }
.cat-pill.selected-Coursera { background: rgba(186,117,23,0.2); border-color: var(--amber); color: #e8a83a; }
.cat-pill.selected-Replit   { background: rgba(29,158,117,0.2); border-color: var(--teal); color: #3dcca0; }
.cat-pill.selected-VPS      { background: rgba(216,90,48,0.2); border-color: var(--coral); color: #f08060; }
.cat-pill.selected-Other    { background: rgba(136,135,128,0.2); border-color: var(--gray); color: #aaa89f; }

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}
.btn-primary { background: var(--purple); color: #fff; width: 100%; }
.btn-primary:hover { background: #534AB7; }
.btn-ghost { background: var(--bg3); color: var(--text2); border: 0.5px solid var(--border); }
.btn-ghost:hover { color: var(--text); }

/* Empty state */
.empty { text-align: center; padding: 40px 20px; color: var(--text3); }
.empty-icon { font-size: 32px; margin-bottom: 12px; }

/* Streak fire */
.streak-icon { font-size: 20px; }

/* Error / success */
.alert { padding: 10px 14px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 16px; }
.alert-error { background: rgba(216,90,48,0.15); color: #f08060; border: 0.5px solid rgba(216,90,48,0.3); }
.alert-success { background: rgba(29,158,117,0.15); color: #3dcca0; border: 0.5px solid rgba(29,158,117,0.3); }

/* Login page */
.login-wrap { max-width: 380px; margin: 80px auto; padding: 0 20px; }
.login-title { font-size: 22px; font-weight: 600; margin-bottom: 6px; }
.login-sub { font-size: 13px; color: var(--text2); margin-bottom: 28px; }
.login-tabs { display: flex; gap: 0; margin-bottom: 24px; border-bottom: 0.5px solid var(--border); }
.login-tab {
  padding: 8px 20px;
  font-size: 13px;
  color: var(--text2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
}
.login-tab.active { color: var(--purple); border-bottom-color: var(--purple); }

/* Charts */
.chart-wrap { position: relative; }

/* Week day cards */
.week-grid { display: grid; gap: 12px; }
.day-card {
  background: var(--bg2);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 0.5px solid var(--border);
}
.day-name { font-size: 13px; font-weight: 500; }
.day-date { font-size: 12px; color: var(--text3); }
.day-sessions { padding: 12px 16px; display: flex; flex-direction: column; gap: 8px; }
.session-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px;
  background: var(--bg3);
  border-radius: var(--radius-sm);
}
.session-info { flex: 1; min-width: 0; }
.session-meta { font-size: 12px; color: var(--text3); margin-top: 3px; }
.day-empty { padding: 16px; font-size: 13px; color: var(--text3); }
.today-card { border-color: rgba(127,119,221,0.3); }

/* Summary bar */
.summary-bar {
  background: var(--bg3);
  border-radius: var(--radius);
  padding: 14px 20px;
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 20px;
  border: 0.5px solid var(--border);
}

/* Responsive */
@media (max-width: 600px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-link { display: none; }
  .log-table th:nth-child(4), .log-table td:nth-child(4) { display: none; }
}