/* ============================================================
   EcoTrace — Design System & Stylesheet
   Fonts: Outfit (Display), Plus Jakarta Sans (Body), JetBrains Mono (Data)
   Theme: High-End Midnight Obsidian & Eco Green SaaS System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ── CSS Custom Properties ────────────────────────────────── */
:root {
  /* Brand Typography */
  --font-display: 'Outfit', 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', SFMono-Regular, ui-monospace, monospace;

  /* Carbon-Tracking Palette */
  --eco-900: #030704;
  --eco-800: #050a06;
  --eco-700: #09120a;
  --eco-600: #14532d;
  --eco-500: #22c55e;
  --eco-400: #4ade80;
  --eco-300: #86efac;
  --emerald:  #10b981;
  --amber:    #fbbf24;
  --amber-lt: #fde68a;
  --sky:      #0ea5e9;
  --violet:   #8b5cf6;
  --rose:     #f43f5e;
  --orange:   #f97316;

  /* Surfaces & Premium Midnight Theme */
  --surface:      #030704;
  --surface-1:    #060b07;
  --surface-2:    #090e0b;
  --surface-3:    #0f1711;
  --card-bg:      rgba(9, 14, 11, 0.6);
  --card-border:  rgba(34, 197, 94, 0.08);
  --card-hover:   rgba(34, 197, 94, 0.05);

  /* Typography Colors */
  --text-primary: #f2f7f4;
  --text-secondary: #a3b8ad;
  --text-muted:   #5b6961;
  --text-faint:   #2b332e;

  /* Strict Border Radius Scale */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  /* Premium Multi-Layered Shadows (Linear/Manus Style) */
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.6), 0 0 1px rgba(255,255,255,0.03);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.6), 0 1px 3px rgba(0,0,0,0.4), 0 0 1px rgba(255,255,255,0.05);
  --shadow-lg:  0 16px 36px rgba(0,0,0,0.7), 0 4px 12px rgba(0,0,0,0.5), 0 0 1px rgba(255,255,255,0.08);
  --shadow-glow: 0 0 28px rgba(34,197,94,0.08);

  /* Standard Motion Spring */
  --transition: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  --nav-height: 64px;
  --sidebar-w:  220px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--eco-500);
  color: #000;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 16px; }

/* ── Background Gradient Animation ───────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 10% 0%, rgba(34,197,94,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 100%, rgba(16,185,129,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(14,165,233,0.03) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── Layout Shell ─────────────────────────────────────────── */
.app-shell {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* ── Sidebar Navigation ───────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--surface-1);
  border-right: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  padding: 0 0 24px;
  transition: transform var(--transition);
  overflow-y: auto;
  scrollbar-width: none;
}
.sidebar::-webkit-scrollbar { display: none; }

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 12px;
  text-decoration: none;
}
.sidebar-logo__icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--eco-500), var(--emerald));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
}
.sidebar-logo__text { font-weight: 800; font-size: 18px; color: var(--text-primary); letter-spacing: -0.3px; }
.sidebar-logo__text span { color: var(--eco-400); }

.sidebar-section-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  padding: 8px 20px 4px;
}

.nav-list { list-style: none; padding: 0 10px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  user-select: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  margin-bottom: 2px;
}
.nav-item:hover {
  background: var(--card-hover);
  color: var(--eco-400);
}
.nav-item--active {
  background: rgba(34, 197, 94, 0.12) !important;
  color: var(--eco-400) !important;
  font-weight: 600;
}
.nav-item__icon { font-size: 18px; width: 22px; text-align: center; flex-shrink: 0; }
.nav-item__label { flex: 1; }

.sidebar-footer {
  margin-top: auto;
  padding: 16px 16px 0;
  border-top: 1px solid var(--card-border);
}
.sidebar-footer__info { font-size: 12px; color: var(--text-muted); line-height: 1.5; }
.sidebar-footer__version { font-size: 11px; color: var(--text-faint); margin-top: 4px; }

/* ── Main Content ─────────────────────────────────────────── */
.main-content-wrap {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  background: rgba(3, 7, 4, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
  padding: 0 28px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 50;
}
.topbar__title { font-family: var(--font-display); font-size: 15px; font-weight: 600; color: var(--text-secondary); letter-spacing: -0.2px; }

.topbar-actions { display: flex; align-items: center; gap: 12px; }

.user-chip {
  display: flex; align-items: center; gap: 8px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 6px 14px 6px 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}
.user-chip__avatar {
  width: 26px; height: 26px;
  background: linear-gradient(135deg, var(--eco-500), var(--emerald));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}

#main-content {
  padding: 28px;
  max-width: 1080px;
  transition: opacity 0.16s ease, transform 0.16s ease;
}

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  border-color: rgba(34, 197, 94, 0.22);
  box-shadow: var(--shadow-md);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 8px;
}
.card__title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

/* ── Grid Layouts ─────────────────────────────────────────── */
.cards-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 20px;
}
.cards-grid--2 { grid-template-columns: repeat(2, 1fr); }
.cards-grid--3 { grid-template-columns: repeat(3, 1fr); }

/* ── Stat Cards ───────────────────────────────────────────── */
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-spring);
  backdrop-filter: blur(12px);
}
.stat-card:hover {
  border-color: rgba(34, 197, 94, 0.25);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(-4px) scale(1.02);
}
.stat-card--primary {
  background: linear-gradient(135deg, rgba(34,197,94,0.08), rgba(16,185,129,0.03));
  border-color: rgba(34,197,94,0.2);
}
.stat-card__label { font-family: var(--font-display); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-card__value { font-family: var(--font-mono); font-size: 38px; font-weight: 700; color: var(--text-primary); line-height: 1; letter-spacing: -1.2px; }
.stat-card__unit  { font-family: var(--font-display); font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.stat-card__rating { font-size: 14px; font-weight: 700; margin-top: 8px; }
.stat-card__desc  { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.stat-card__progress { margin-top: 12px; }

/* ── Progress Bar ─────────────────────────────────────────── */
.progress-bar {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 4px;
}
.progress-bar__fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.8s cubic-bezier(0.4,0,0.2,1);
}
.progress-bar__label { font-size: 11px; color: var(--text-muted); }

/* ── View Header ──────────────────────────────────────────── */
.view-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.view-title    { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; color: var(--text-primary); }
.view-subtitle { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

/* ── Streak Badge ─────────────────────────────────────────── */
.streak-badge {
  background: rgba(249,115,22,0.12);
  border: 1px solid rgba(249,115,22,0.3);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--orange);
  white-space: nowrap;
}

/* ── Charts ───────────────────────────────────────────────── */
.chart-container { position: relative; width: 100%; }
.chart-container--sm  { height: 160px; }
.chart-container--md  { height: 220px; }
.chart-container--lg  { height: 280px; }
.chart-toggle { display: flex; gap: 6px; }

/* ── Equivalency Cards ────────────────────────────────────── */
.equiv-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.equiv-grid--large { grid-template-columns: repeat(4, 1fr); }

.equiv-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  text-align: center;
  transition: all var(--transition);
}
.equiv-card:hover { border-color: rgba(34,197,94,0.3); background: var(--card-hover); }
.equiv-icon  { font-size: 24px; margin-bottom: 6px; }
.equiv-value { font-size: 18px; font-weight: 800; color: var(--eco-400); margin-bottom: 2px; }
.equiv-label { font-size: 11px; color: var(--text-muted); line-height: 1.3; }

/* ── Log Form ─────────────────────────────────────────────── */
.category-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
.category-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 10px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
  font-family: inherit;
}
.category-tab span:first-child { font-size: 24px; }
.category-tab:hover { border-color: var(--eco-500); color: var(--eco-400); background: var(--card-hover); }
.category-tab--active {
  border-color: var(--eco-500) !important;
  color: var(--eco-400) !important;
  background: rgba(34,197,94,0.10) !important;
  box-shadow: 0 0 16px rgba(34,197,94,0.15);
}

.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-input, .form-select {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}
.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--eco-500);
  box-shadow: 0 0 0 3px rgba(34,197,94,0.15);
}
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}
.form-select option { background: var(--surface-2); color: var(--text-primary); }

.input-with-unit { position: relative; }
.input-with-unit .form-input { padding-right: 70px; }
.input-unit {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: var(--text-muted);
  pointer-events: none;
  font-weight: 500;
}

/* ── Emission Preview ─────────────────────────────────────── */
.emission-preview { margin-bottom: 16px; }
.preview-card {
  background: rgba(34,197,94,0.08);
  border: 1px solid rgba(34,197,94,0.25);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  animation: fadeInUp 0.3s ease;
}
.preview-main {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 8px;
}
.preview-icon  { font-size: 28px; }
.preview-kg    { font-size: 32px; font-weight: 800; color: var(--eco-400); letter-spacing: -1px; }
.preview-unit  { font-size: 14px; color: var(--text-muted); }
.preview-equiv { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.preview-rating { font-size: 13px; font-weight: 700; }

/* ── Log Cards ────────────────────────────────────────────── */
.log-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: rgba(255,255,255,0.02);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  transition: all var(--transition);
}
.log-card:hover { background: var(--card-hover); border-color: var(--card-border); }
.log-card__icon  { font-size: 22px; width: 36px; text-align: center; }
.log-card__info  { flex: 1; min-width: 0; }
.log-card__label { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.log-card__meta  { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.log-card__kg    { font-size: 15px; font-weight: 700; white-space: nowrap; }
.log-card__kg span { font-size: 11px; font-weight: 400; color: var(--text-muted); }
.log-card__delete {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 14px;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all var(--transition);
  font-family: inherit;
  line-height: 1;
}
.log-card__delete:hover { color: var(--rose); background: rgba(244,63,94,0.1); }

/* ── Insight Cards ────────────────────────────────────────── */
.insight-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  animation: fadeInUp 0.4s ease both;
  transition: border-color var(--transition);
}
.insight-card:hover { border-color: rgba(34,197,94,0.3); }
.insight-card__header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; flex-wrap: wrap; gap: 6px; }
.insight-card__impact {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.8px;
  padding: 3px 8px;
  border-radius: 999px;
}
.insight-card__saving { font-size: 12px; color: var(--eco-400); font-weight: 600; }
.insight-card__message { font-size: 14px; color: var(--text-primary); margin-bottom: 10px; line-height: 1.5; }
.insight-card__action { font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.insight-card__action-label { font-weight: 700; color: var(--eco-400); }

/* ── Global Comparison ────────────────────────────────────── */
.comparison-grid { display: grid; gap: 16px; }
.comparison-item { padding: 14px; background: rgba(255,255,255,0.02); border-radius: var(--radius-sm); }
.comparison-item__header { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 13px; font-weight: 600; color: var(--text-secondary); }
.comparison-bar-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.comparison-bar { flex: 1; height: 8px; background: rgba(255,255,255,0.06); border-radius: 999px; overflow: hidden; }
.comparison-bar__fill { height: 100%; border-radius: 999px; background: var(--eco-500); transition: width 1s cubic-bezier(0.4,0,0.2,1); }
.comparison-bar__fill--user { background: linear-gradient(90deg, var(--eco-500), var(--emerald)); }
.comparison-bar__label { font-size: 12px; color: var(--text-muted); white-space: nowrap; min-width: 70px; }

/* ── AI Coach ─────────────────────────────────────────────── */
.ai-status {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--eco-400); font-weight: 600;
}
.ai-status__dot {
  width: 8px; height: 8px;
  background: var(--eco-500);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.chat-card { display: flex; flex-direction: column; }

.chat-messages {
  min-height: 240px;
  max-height: 400px;
  overflow-y: auto;
  padding: 4px 0 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--surface-3) transparent;
  margin-bottom: 12px;
}

.chat-bubble {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  animation: fadeInUp 0.3s ease;
}
.chat-bubble--user { flex-direction: row-reverse; }

.chat-bubble__avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--surface-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.chat-bubble__avatar--user { background: rgba(34,197,94,0.15); }

.chat-bubble__content { max-width: 75%; }
.chat-bubble__text {
  background: var(--surface-2);
  border: 1px solid var(--card-border);
  border-radius: 14px 14px 14px 4px;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-primary);
}
.chat-bubble--user .chat-bubble__text {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.20);
  border-radius: 14px 14px 4px 14px;
}
.chat-bubble__time { font-size: 11px; color: var(--text-faint); margin-top: 4px; padding: 0 4px; }

.chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.chip {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  font-weight: 500;
  white-space: nowrap;
}
.chip:hover { border-color: var(--eco-500); color: var(--eco-400); background: var(--card-hover); }

.chat-input-form {
  display: flex;
  gap: 10px;
  align-items: center;
}
.chat-input {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.chat-input:focus {
  outline: none;
  border-color: var(--eco-500);
  box-shadow: 0 0 0 3px rgba(34,197,94,0.15);
}
.chat-send-btn { display: flex; align-items: center; gap: 6px; white-space: nowrap; }

/* Typing dots */
.typing-dots { display: flex; gap: 5px; padding: 4px 0; }
.typing-dots span {
  width: 7px; height: 7px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typing 1.2s infinite ease-in-out both;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

/* ── Quick Win ────────────────────────────────────────────── */
.quick-win-card {
  background: linear-gradient(135deg, rgba(245,158,11,0.10), rgba(251,191,36,0.05));
  border-color: rgba(245,158,11,0.25);
}
.quick-win__header { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; color: var(--amber); margin-bottom: 10px; }
.quick-win__message { font-size: 15px; color: var(--text-primary); margin-bottom: 10px; line-height: 1.5; font-weight: 500; }
.quick-win__action { font-size: 14px; color: var(--text-muted); margin-bottom: 8px; }
.quick-win__action-label { font-weight: 700; color: var(--amber); }
.quick-win__saving { font-size: 13px; color: var(--eco-400); font-weight: 600; }

/* ── Achievement / Goals ──────────────────────────────────── */
.goals-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  text-align: center;
}
.goal-item { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.goal-item__label  { font-size: 13px; color: var(--text-muted); font-weight: 600; }
.goal-item__status { font-size: 13px; font-weight: 700; }
.goals-edit summary::-webkit-details-marker { display: none; }

/* ── Badge Gallery ────────────────────────────────────────── */
.badge-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}
.badge-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 16px 10px;
  text-align: center;
  cursor: default;
  transition: all var(--transition);
}
.badge-card--unlocked {
  border-color: rgba(34,197,94,0.3);
  background: rgba(34,197,94,0.06);
  position: relative;
  overflow: hidden;
}
.badge-card--unlocked::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: linear-gradient(
    45deg,
    transparent 45%,
    rgba(255, 255, 255, 0.08) 50%,
    transparent 55%
  );
  transform: rotate(-45deg);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.badge-card--unlocked:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--eco-400);
}
.badge-card--unlocked:hover::after {
  transform: translate(50%, 50%) rotate(-45deg);
}
.badge-card--locked { opacity: 0.25; filter: grayscale(100%); }
.badge-card__icon  { font-size: 32px; margin-bottom: 8px; display: block; }
.badge-card__name  { font-size: 12px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.badge-card__tier  { font-size: 10px; font-weight: 700; letter-spacing: 0.8px; margin-bottom: 4px; }
.badge-card__date  { font-size: 11px; color: var(--text-muted); }
.badge-card__desc  { font-size: 11px; color: var(--text-muted); line-height: 1.3; }
.badge-count       { font-size: 12px; color: var(--text-muted); font-weight: 600; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn--primary {
  background: linear-gradient(135deg, var(--eco-500), var(--emerald));
  color: #000;
  box-shadow: 0 4px 12px rgba(34,197,94,0.25);
}
.btn--primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(34,197,94,0.35);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  border: 1px solid var(--card-border);
}
.btn--ghost:hover { background: var(--card-hover); color: var(--text-primary); border-color: rgba(34,197,94,0.3); }
.btn--active { background: rgba(34,197,94,0.12) !important; color: var(--eco-400) !important; border-color: rgba(34,197,94,0.3) !important; }

.btn--sm   { padding: 6px 14px; font-size: 13px; }
.btn--full { width: 100%; }

/* ── Toast Notifications ──────────────────────────────────── */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 340px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-2);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 14px;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateX(20px) scale(0.96);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}
.toast--visible { opacity: 1; transform: translateX(0) scale(1); pointer-events: auto; }
.toast--hiding  { opacity: 0; transform: translateX(20px) scale(0.96); }
.toast--success  { border-color: rgba(34,197,94,0.4); }
.toast--achievement { border-color: rgba(251,191,36,0.4); background: rgba(251,191,36,0.08); }
.toast--warning  { border-color: rgba(245,158,11,0.4); }
.toast--info     { border-color: rgba(14,165,233,0.4); }
.toast__icon     { font-size: 18px; flex-shrink: 0; }

/* ── Empty State ──────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}
.empty-state__icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }
.empty-state p { margin-bottom: 16px; }

/* ── Misc Utilities ───────────────────────────────────────── */
.muted-text { color: var(--text-muted); font-size: 14px; }

.skeleton-line {
  height: 14px;
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--surface-3) 50%, var(--surface-2) 75%);
  background-size: 200% 100%;
  border-radius: 4px;
  margin-bottom: 10px;
  animation: skeleton-shimmer 1.4s infinite;
}

/* ── Mobile Navigation (Bottom Bar) ──────────────────────── */
.mobile-nav { display: none; }

/* Staggered entrance animation for premium SaaS feel */
.staggered-entrance > * {
  opacity: 0;
  animation: premiumFadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.staggered-entrance > *:nth-child(1) { animation-delay: 0.04s; }
.staggered-entrance > *:nth-child(2) { animation-delay: 0.10s; }
.staggered-entrance > *:nth-child(3) { animation-delay: 0.16s; }
.staggered-entrance > *:nth-child(4) { animation-delay: 0.22s; }
.staggered-entrance > *:nth-child(5) { animation-delay: 0.28s; }

@keyframes premiumFadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}
@keyframes typing {
  0%, 80%, 100% { transform: scale(0.8); opacity: 0.4; }
  40%           { transform: scale(1); opacity: 1; }
}
@keyframes skeleton-shimmer {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .cards-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .equiv-grid--large { grid-template-columns: repeat(2, 1fr); }
  .goals-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }

  .sidebar {
    transform: translateX(-100%);
    width: 220px;
    box-shadow: var(--shadow-lg);
  }
  .sidebar.sidebar--open { transform: translateX(0); }

  .main-content-wrap { margin-left: 0; }

  .topbar { padding: 0 16px; }
  .topbar__title { display: none; }

  #main-content { padding: 16px; }

  .mobile-nav {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: var(--surface-1);
    border-top: 1px solid var(--card-border);
    z-index: 100;
    padding: 8px 4px;
    padding-bottom: calc(8px + env(safe-area-inset-bottom));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
  .mobile-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 6px 4px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
  }
  .mobile-nav-item__icon { font-size: 20px; }
  .mobile-nav-item--active { color: var(--eco-400); }
  .mobile-nav-item--active .mobile-nav-item__icon {
    filter: drop-shadow(0 0 6px rgba(34,197,94,0.6));
  }

  #main-content { padding-bottom: 90px; }

  .cards-grid--2, .cards-grid--3 { grid-template-columns: 1fr; }
  .category-tabs { grid-template-columns: repeat(2, 1fr); }
  .equiv-grid { grid-template-columns: repeat(2, 1fr); }
  .equiv-grid--large { grid-template-columns: repeat(2, 1fr); }
  .goals-grid { grid-template-columns: 1fr; }
  .badge-gallery { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
  .view-title { font-size: 22px; }

  .hamburger {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-primary);
    font-size: 18px;
    font-family: inherit;
  }
}

@media (min-width: 769px) {
  .hamburger { display: none !important; }
}

/* ── Overlay for mobile sidebar ───────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
  backdrop-filter: blur(2px);
}
.sidebar-overlay--active { display: block; }

/* ── Focus Visible (Accessibility) ───────────────────────── */
:focus-visible {
  outline: 2px solid var(--eco-500);
  outline-offset: 2px;
}
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--eco-500);
  outline-offset: 2px;
}