*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-family); color: var(--color-text); background: var(--color-bg); -webkit-font-smoothing: antialiased; }
a { color: var(--color-primary); text-decoration: none; }

/* Layout */
.app-nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(20px); border-bottom: 1px solid var(--color-border-light); height: var(--navbar-height); }
.app-nav-inner { max-width: var(--content-max); margin: 0 auto; padding: 0 1.5rem; height: 100%; display: flex; align-items: center; justify-content: space-between; }
.app-nav-logo { font-weight: 700; font-size: 1.15rem; color: var(--color-text); }
.app-nav-logo span { color: var(--color-primary); }
.app-nav-links { display: flex; align-items: center; gap: 1.25rem; }
.app-nav-links a { font-size: var(--font-sm); color: var(--color-text-secondary); font-weight: 500; }
.app-nav-links a:hover { color: var(--color-primary); }
.app-nav-links a.active { color: var(--color-primary); font-weight: 600; }

.app-content { max-width: var(--content-max); margin: 0 auto; padding: calc(var(--navbar-height) + 2rem) 1.5rem 3rem; }

/* Cards */
.card { background: var(--color-surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); overflow: hidden; }
.card-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--color-border-light); }
.card-header h2, .card-header h3 { margin: 0; font-size: 1.1rem; font-weight: 600; }
.card-body { padding: 1.5rem; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.6rem 1.25rem; border-radius: var(--radius-sm); font-size: var(--font-sm); font-weight: 600; border: none; cursor: pointer; transition: all 0.2s; text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-secondary { background: var(--color-bg); color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-border-light); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-sm { padding: 0.4rem 0.75rem; font-size: var(--font-xs); }
.btn-full { width: 100%; justify-content: center; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: var(--font-sm); font-weight: 600; margin-bottom: 0.35rem; color: var(--color-text); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.65rem 0.9rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: var(--font-base); font-family: inherit; transition: border-color 0.2s; background: #fff; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-light); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Tables */
.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-size: var(--font-sm); font-weight: 600; color: var(--color-text-secondary); padding: 0.75rem; border-bottom: 2px solid var(--color-border-light); }
.table td { padding: 0.75rem; border-bottom: 1px solid var(--color-border-light); font-size: var(--font-sm); }
.table tr:last-child td { border-bottom: none; }
.table-responsive { overflow-x: auto; }

/* Page header */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.page-header h1 { font-size: var(--font-xl); font-weight: 700; margin: 0; }

/* Empty state */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--color-text-tertiary); }

/* Flash messages */
.flash { padding: 0.75rem 1rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-size: var(--font-sm); font-weight: 500; }
.flash-success { background: rgba(52,199,89,0.1); color: #1a7a34; }
.flash-error { background: rgba(255,59,48,0.1); color: #cc2d26; }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: var(--color-surface); border-radius: var(--radius-md); padding: 1.25rem; box-shadow: var(--shadow-card); }
.stat-value { font-size: var(--font-2xl); font-weight: 800; color: var(--color-primary); }
.stat-label { font-size: var(--font-sm); color: var(--color-text-secondary); margin-top: 0.25rem; }

/* Badge */
.badge { display: inline-block; padding: 0.15rem 0.6rem; border-radius: var(--radius-full); font-size: var(--font-xs); font-weight: 600; }
.badge-public { background: rgba(52,199,89,0.1); color: #1a7a34; }
.badge-private { background: rgba(134,134,139,0.1); color: var(--color-text-tertiary); }

/* Feeling dots */
.feeling-bar { display: flex; gap: 0.5rem; }
.feeling-dot { width: 32px; height: 32px; border-radius: 50%; border: 2px solid var(--color-border); display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 1.1rem; transition: all 0.2s; }
.feeling-dot.active { border-color: var(--color-primary); background: var(--color-primary-light); transform: scale(1.15); }
.feeling-dot:hover { border-color: var(--color-primary); }

/* Mobile */
@media (max-width: 768px) {
    .form-grid { grid-template-columns: 1fr; }
    .app-content { padding-left: 1rem; padding-right: 1rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .page-header { flex-direction: column; align-items: flex-start; }
}