:root {
  --bg: #000000; 
  --card-bg: rgba(14, 14, 18, 0.82); 
  --card-sub: rgba(24, 24, 29, 0.7);
  --border: rgba(45, 45, 55, 0.6); 
  --border-glow: rgba(99, 102, 241, 0.4);
  --text-main: #f8fafc; 
  --text-muted: #94a3b8;
  --primary: #6366f1; 
  --primary-glow: rgba(99, 102, 241, 0.25);
  --strength: #10b981; 
  --cardio: #38bdf8; 
  --logout: #f43f5e;
  --protein: #10b981; 
  --carbs: #38bdf8; 
  --fat: #fbbf24; 
  --radius: 26px; 
  --radius-sm: 16px;
  --safe-area-bottom: env(safe-area-inset-bottom, 20px);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

body { 
  margin: 0; 
  font-family: 'Plus Jakarta Sans', sans-serif; 
  background-color: var(--bg); 
  background-image: 
    radial-gradient(circle at 15% 5%, rgba(99, 102, 241, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 95%, rgba(16, 185, 129, 0.08) 0%, transparent 45%);
  color: var(--text-main); 
  padding-bottom: calc(96px + var(--safe-area-bottom)); 
  animation: fadeInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.logo-hero { width: 100%; max-width: 600px; margin: 0 auto; padding: 20px 16px 8px 16px; }
.logo-hero img { 
  width: 100%; 
  height: auto; 
  border-radius: var(--radius); 
  border: 1px solid rgba(255, 255, 255, 0.15); 
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.15); 
  background: linear-gradient(135deg, rgba(18,18,22,0.9), rgba(0,0,0,0.95)); 
  display: block; 
  margin: 0 auto; 
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease; 
}
.logo-hero img:hover { transform: scale(1.01); box-shadow: 0 25px 60px rgba(99, 102, 241, 0.3); }

.page { max-width: 600px; margin: 0 auto; padding: 8px 16px; }

.card { 
  background: var(--card-bg); 
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border); 
  border-radius: var(--radius); 
  padding: 22px; 
  margin-bottom: 16px; 
  box-shadow: 0 15px 35px -10px rgba(0,0,0,0.7);
  transition: border-color 0.25s ease, transform 0.2s ease;
}
.card:hover { border-color: rgba(255, 255, 255, 0.22); }

.streak-banner { 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(239, 68, 68, 0.08)); 
  border: 1px solid rgba(245, 158, 11, 0.3); 
  border-radius: var(--radius-sm); 
  padding: 12px 16px; 
  margin-bottom: 16px; 
}
.streak-info { display: flex; align-items: center; gap: 10px; }
.streak-icon { font-size: 20px; }
.streak-text { font-size: 13px; font-weight: 800; color: #fde047; letter-spacing: -0.01em; }
.streak-sub { font-size: 10px; color: var(--text-muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }

.date-nav { display: flex; justify-content: space-between; align-items: center; }
.nav-arrow { 
  font-size: 18px; 
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary); 
  background: rgba(99,102,241,0.12); 
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: 14px; 
  text-decoration: none; 
  font-weight: 800; 
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-arrow:active { transform: scale(0.92); background: rgba(99,102,241,0.25); }
.date-display { text-align: center; }
.date-display h1 { margin: 0; font-size: 17px; font-weight: 800; letter-spacing: -0.01em; }
.date-display .sub { font-size: 11px; color: var(--text-muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-top: 2px; }

.monthly-btn { 
  display: flex; 
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center; 
  margin-top: 14px; 
  padding: 12px; 
  background: rgba(99,102,241,0.1); 
  border: 1px solid rgba(99,102,241,0.25); 
  border-radius: var(--radius-sm); 
  color: #818cf8; 
  text-decoration: none; 
  font-size: 12px; 
  font-weight: 700; 
  transition: all 0.2s ease;
}
.monthly-btn:hover { background: rgba(99,102,241,0.18); border-color: rgba(99,102,241,0.4); }

.macros-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; margin-top: 16px; }
.macro-item { text-align: center; padding: 12px 4px; background: var(--card-sub); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.macro-val { font-size: 15px; font-weight: 800; letter-spacing: -0.02em; }
.macro-target { font-size: 10px; color: var(--text-muted); margin-top: 1px; font-weight: 600; }
.macro-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; margin-top: 3px; font-weight: 700; letter-spacing: 0.04em; }
.kcal { color: #818cf8; } .prot { color: var(--protein); } .carb { color: var(--carbs); } .fat { color: var(--fat); }

/* Habit Checklist Styles */
.habit-list { display: flex; flex-direction: column; gap: 8px; }
.habit-item { 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  background: var(--card-sub); 
  border: 1px solid var(--border); 
  border-radius: var(--radius-sm); 
  padding: 12px 14px; 
  cursor: pointer;
  transition: all 0.2s ease;
}
.habit-item:hover { border-color: rgba(255, 255, 255, 0.2); transform: translateY(-1px); }
.habit-left { display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 700; }
.habit-checkbox { 
  width: 24px; 
  height: 24px; 
  border-radius: 8px; 
  border: 2px solid var(--border); 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  font-size: 13px; 
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.habit-item.done .habit-checkbox { background: var(--strength); border-color: var(--strength); color: #fff; transform: scale(1.05); }
.habit-item.done .habit-label { color: var(--text-main); text-decoration: line-through; opacity: 0.75; }
.habit-label { color: var(--text-muted); transition: color 0.2s; }

/* Journal Note Styles */
.journal-textarea {
  width: 100%;
  background: var(--card-sub);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 12px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 13px;
  resize: vertical;
  min-height: 80px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.journal-textarea:focus { border-color: var(--primary); box-shadow: 0 0 12px var(--primary-glow); }
.journal-save-btn {
  margin-top: 8px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: #818cf8;
  padding: 9px 18px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.journal-save-btn:hover { background: rgba(99, 102, 241, 0.25); border-color: rgba(99, 102, 241, 0.5); }

.workout-item { 
  padding: 16px; 
  background: var(--card-sub); 
  border: 1px solid var(--border);
  border-left: 4px solid; 
  border-radius: var(--radius-sm); 
  margin-bottom: 12px; 
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.workout-item:hover { transform: translateY(-1px); }
.workout-item.strength { border-color: var(--strength); } 
.workout-item.cardio { border-color: var(--cardio); }
.workout-name { font-weight: 800; font-size: 15px; margin-bottom: 4px; letter-spacing: -0.01em; }
.workout-meta { font-size: 13px; color: var(--text-muted); }
.empty-state { text-align: center; color: var(--text-muted); padding: 40px 20px; font-weight: 500; }

.download-link-wrap { text-align: center; margin: 12px 0 4px 0; }
.direct-download-link { 
  display: inline-flex; 
  align-items: center; 
  gap: 8px; 
  color: #fff; 
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.35), rgba(16, 185, 129, 0.3)); 
  border: 1px solid rgba(99, 102, 241, 0.5); 
  padding: 12px 24px; 
  border-radius: 30px; 
  font-size: 12px; 
  font-weight: 700; 
  text-decoration: none; 
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.25);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1); 
}
.direct-download-link:hover { 
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.5), rgba(16, 185, 129, 0.4)); 
  border-color: var(--primary); 
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(99, 102, 241, 0.4); 
}

.offscreen-container { position: absolute; left: -9999px; top: -9999px; width: 480px; }

.shareable-card { 
  background: linear-gradient(135deg, #0a0a0d 0%, #000000 100%); 
  border: 2px solid #27272a; 
  border-radius: 36px; 
  padding: 28px 24px; 
  color: #f8fafc; 
  font-family: 'Plus Jakarta Sans', sans-serif; 
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.95), 0 0 30px rgba(0, 0, 0, 0.8); 
  position: relative;
  overflow: hidden;
}
.shareable-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, #3f3f46, #ffffff, #3f3f46);
}

.share-header-center { text-align: center; margin-bottom: 16px; }
.share-top-logo { 
  width: 72px; 
  height: 72px; 
  border-radius: 16px; 
  border: 2px solid #3f3f46; 
  object-fit: cover; 
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.8), 0 0 15px rgba(255, 255, 255, 0.05); 
  margin-bottom: 10px; 
  background: #121216; 
  display: block; 
  margin-left: auto; 
  margin-right: auto; 
}
.share-main-title { font-size: 16px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; color: #ffffff; }
.share-sub-date { font-size: 10px; font-weight: 800; color: #94a3b8; margin-top: 3px; text-transform: uppercase; letter-spacing: 1px; background: #121216; display: inline-block; padding: 3px 12px; border-radius: 20px; border: 1px solid #27272a; }

.share-stats-box { background: #121216; border: 1px solid #27272a; border-radius: 18px; padding: 14px 18px; margin-bottom: 12px; }
.share-stat-row { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; font-size: 11px; font-weight: 700; color: #94a3b8; border-bottom: 1px solid #27272a; }
.share-stat-row:last-child { border-bottom: none; }
.share-val-hl { color: #ffffff; font-weight: 800; }

.share-workouts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
.share-workout-box {
  background: #000000;
  border: 1px solid #27272a;
  border-radius: 12px;
  padding: 10px 12px;
}
.share-workout-name {
  font-size: 11px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.share-workout-detail {
  font-size: 10px;
  color: #94a3b8;
  font-weight: 700;
  line-height: 1.3;
}

.bottom-nav { 
  position: fixed; 
  bottom: 0; 
  left: 0; 
  right: 0; 
  background: rgba(10, 10, 14, 0.9); 
  backdrop-filter: blur(28px); 
  -webkit-backdrop-filter: blur(28px);
  border-top: 1px solid var(--border); 
  padding: 10px 16px calc(10px + var(--safe-area-bottom)); 
  display: flex; 
  justify-content: space-around; 
  align-items: center; 
  z-index: 100; 
  max-width: 600px; 
  margin: 0 auto; 
}
.nav-item { 
  display: flex; 
  flex-direction: column; 
  align-items: center; 
  color: var(--text-muted); 
  text-decoration: none; 
  font-size: 10px; 
  font-weight: 700; 
  gap: 4px; 
  padding: 6px 12px; 
  border-radius: 12px;
  transition: all 0.2s ease;
}
.nav-item.active { color: #818cf8; background: rgba(99, 102, 241, 0.15); }
.nav-icon { font-size: 20px; }
.logout-nav { color: var(--logout); text-decoration: none; display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 6px 12px; border-radius: 12px; font-size: 10px; font-weight: 700; transition: background 0.2s ease; }
.logout-nav:hover { background: rgba(244, 63, 94, 0.12); }
.logout-icon { font-size: 20px; font-weight: bold; line-height: 1; }