:root {
  --green-dark: #1a4731;
  --green: #2d7a4f;
  --green-light: #4caf7a;
  --green-pale: #e8f5ee;
  --text: #1a1a2e;
  --text-muted: #666;
  --border: #e0e0e0;
  --bg: #f8faf9;
  --white: #ffffff;
  --danger: #e74c3c;
  --warning: #f39c12;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.narrow { max-width: 540px; }

/* Navbar */
.navbar { background: var(--green-dark); color: white; padding: 0.8rem 0; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,0.2); }
.nav-inner { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.nav-logo { color: white; font-size: 1.3rem; font-weight: 700; display: flex; align-items: center; gap: 0.4rem; text-decoration: none; }
.nav-logo:hover { text-decoration: none; opacity: 0.9; }
.nav-links { display: flex; align-items: center; gap: 1rem; margin-left: auto; flex-wrap: wrap; }
.nav-links a { color: rgba(255,255,255,0.85); font-size: 0.9rem; }
.nav-links a:hover { color: white; text-decoration: none; }
.nav-grams { background: rgba(255,255,255,0.15); padding: 0.3rem 0.8rem; border-radius: 20px; }
.nav-username { font-weight: 600; color: white !important; }
.nav-admin { background: var(--warning); color: white !important; padding: 0.3rem 0.8rem; border-radius: 5px; }
.nav-toggle { display: none; background: none; border: none; color: white; font-size: 1.5rem; cursor: pointer; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.6rem 1.2rem; border-radius: var(--radius); font-weight: 600; font-size: 0.9rem; cursor: pointer; border: 2px solid transparent; transition: all 0.2s; text-decoration: none; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--green); color: white; border-color: var(--green); }
.btn-primary:hover { background: var(--green-dark); border-color: var(--green-dark); color: white; }
.btn-outline { background: transparent; color: var(--green); border-color: var(--green); }
.btn-outline:hover { background: var(--green); color: white; }
.btn-lg { padding: 0.8rem 1.8rem; font-size: 1rem; }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.8rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-danger { background: var(--danger); color: white; border-color: var(--danger); }

/* Hero */
.hero { background: linear-gradient(135deg, var(--green-dark) 0%, var(--green) 100%); color: white; padding: 4rem 0; text-align: center; }
.hero h1 { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; line-height: 1.2; }
.hero p { font-size: 1.15rem; opacity: 0.9; margin-bottom: 2rem; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero .btn { margin: 0 0.5rem; }
.hero-balance { font-size: 1.1rem; margin-top: 1rem; }
.hero-balance a { color: #a8e6c3; font-weight: 600; }

/* Cards */
.card { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); }

/* Layout */
.main-layout { display: grid; grid-template-columns: 1fr 320px; gap: 2rem; padding: 2rem 0; }
.main-content {}
.sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-card { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); padding: 1.25rem; }
.sidebar-card h3 { font-size: 1rem; margin-bottom: 0.75rem; color: var(--green-dark); }

/* Section headers */
.section-header { display: flex; align-items: center; justify-content: space-between; margin: 2rem 0 1rem; }
.section-header h2 { font-size: 1.2rem; font-weight: 700; color: var(--green-dark); }

/* Categories */
.categories-list { display: flex; flex-direction: column; gap: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: white; }
.category-card { display: grid; grid-template-columns: 50px 1fr 100px; gap: 1rem; padding: 1.2rem 1.5rem; border-bottom: 1px solid var(--border); align-items: center; transition: background 0.15s; }
.category-card:last-child { border-bottom: none; }
.category-card:hover { background: var(--green-pale); }
.cat-icon { font-size: 1.8rem; text-align: center; }
.cat-info h3 { font-size: 1rem; margin-bottom: 0.2rem; }
.cat-info h3 a { color: var(--text); font-weight: 600; }
.cat-info h3 a:hover { color: var(--green); }
.cat-info p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.3rem; }
.cat-last { font-size: 0.8rem; color: var(--text-muted); }
.cat-last a { color: var(--green); }
.cat-stats { display: flex; gap: 1rem; }
.cat-stats div { text-align: center; }
.cat-stats strong { display: block; font-size: 1.1rem; color: var(--green-dark); }
.cat-stats span { font-size: 0.75rem; color: var(--text-muted); }

/* Topics list */
.topics-list { display: flex; flex-direction: column; gap: 0; }
.topics-list.card { border-radius: var(--radius); overflow: hidden; }
.topic-row { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); background: white; gap: 1rem; }
.topic-row:last-child { border-bottom: none; }
.topic-row:hover { background: var(--green-pale); }
.topic-row.pinned { background: #fffde7; }
.topic-info { flex: 1; min-width: 0; }
.topic-title { font-weight: 600; color: var(--text); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 0.25rem; }
.topic-title:hover { color: var(--green); }
.topic-meta { font-size: 0.8rem; color: var(--text-muted); }
.topic-stats { display: flex; gap: 1rem; font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; }
.topic-title-h1 { font-size: 1.6rem; margin-bottom: 1rem; line-height: 1.3; }
.pin-badge, .lock-badge { font-size: 0.75rem; margin-right: 0.5rem; }

/* Posts */
.post-card { display: grid; grid-template-columns: 160px 1fr; gap: 0; background: white; border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 1rem; overflow: hidden; }
.op-card { border-color: var(--green-light); border-width: 2px; }
.post-author { background: var(--green-pale); padding: 1.5rem 1rem; text-align: center; border-right: 1px solid var(--border); }
.post-author .avatar-circle { margin: 0 auto 0.5rem; }
.author-name { font-weight: 700; color: var(--text); display: block; margin-bottom: 0.3rem; }
.author-meta { font-size: 0.8rem; color: var(--text-muted); }
.post-body { padding: 1.5rem; }
.post-content { line-height: 1.8; color: var(--text); margin-bottom: 1rem; }
.post-footer { display: flex; align-items: center; gap: 1rem; font-size: 0.85rem; color: var(--text-muted); flex-wrap: wrap; }
.vote-buttons { display: flex; gap: 0.5rem; }
.vote-btn { background: none; border: 1px solid var(--border); border-radius: 5px; padding: 0.25rem 0.6rem; cursor: pointer; font-size: 0.85rem; }
.vote-btn:hover:not(:disabled) { background: var(--green-pale); border-color: var(--green); }
.vote-btn:disabled { opacity: 0.5; cursor: default; }

/* Replies */
.replies-header { display: flex; align-items: center; justify-content: space-between; margin: 2rem 0 1rem; }
.replies-header h2 { font-size: 1.1rem; }
.reply-form { padding: 1.5rem; margin-top: 1.5rem; }
.reply-form h3 { margin-bottom: 0.5rem; }
.reply-cta { padding: 1.5rem; margin-top: 1.5rem; text-align: center; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.4rem; font-size: 0.9rem; }
.form-control { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; font-family: inherit; transition: border-color 0.2s; }
.form-control:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(45,122,79,0.1); }
textarea.form-control { resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-actions { display: flex; gap: 1rem; align-items: center; margin-top: 1.5rem; }
.checkbox-label { display: flex; align-items: flex-start; gap: 0.5rem; font-size: 0.9rem; margin-bottom: 0.75rem; cursor: pointer; }
.word-counter { font-size: 0.8rem; color: var(--text-muted); text-align: right; margin-top: 0.3rem; }
.ban-state-notice { background: #fff3cd; border: 1px solid #ffc107; border-radius: 8px; padding: 0.75rem 1rem; font-size: 0.85rem; margin-bottom: 1.25rem; }

/* Alerts */
.alert { padding: 0.9rem 1.2rem; border-radius: 8px; margin-bottom: 1.25rem; font-size: 0.95rem; }
.alert-error { background: #fdecea; border: 1px solid #f44336; color: #b71c1c; }
.alert-success { background: #e8f5e9; border: 1px solid #4caf50; color: #1b5e20; }

/* Badges */
.badge { font-size: 0.75rem; padding: 0.2rem 0.5rem; border-radius: 4px; font-weight: 600; }
.badge-pending { background: #fff3cd; color: #856404; }
.badge-approved { background: #d1eddf; color: #155724; }
.badge-fulfilled { background: #d1eddf; color: #155724; }
.badge-cancelled { background: #f8d7da; color: #721c24; }

/* Rank badges */
.rank-badge { font-size: 0.75rem; padding: 0.15rem 0.5rem; border-radius: 4px; font-weight: 600; text-transform: capitalize; }
.rank-seedling { background: #e8f5e9; color: #2e7d32; }
.rank-sprout { background: #c8e6c9; color: #1b5e20; }
.rank-leaf { background: #a5d6a7; color: #1b5e20; }
.rank-branch { background: #ffd54f; color: #e65100; }
.rank-elder { background: linear-gradient(90deg,#ffd700,#ff8c00); color: #fff; }
.rank-lg { font-size: 0.9rem; padding: 0.3rem 0.8rem; }

/* Avatar */
.avatar-circle { width: 48px; height: 48px; border-radius: 50%; background: var(--green); color: white; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.2rem; }
.avatar-lg { width: 72px; height: 72px; font-size: 1.8rem; }

/* Auth pages */
.auth-page { padding-top: 3rem; padding-bottom: 3rem; }
.auth-card { padding: 2.5rem; }
.auth-logo { font-size: 3rem; text-align: center; margin-bottom: 1rem; }
.auth-card h1 { text-align: center; margin-bottom: 0.5rem; }
.auth-card > p { text-align: center; color: var(--text-muted); margin-bottom: 1.5rem; }
.auth-links { text-align: center; margin-top: 1.5rem; font-size: 0.9rem; color: var(--text-muted); }
.auth-links a { color: var(--green); }

/* Profile */
.profile-header { padding: 2rem; display: flex; align-items: flex-start; gap: 1.5rem; }
.profile-stats { display: flex; gap: 1.5rem; margin-top: 0.75rem; }
.profile-stats div { text-align: center; }
.profile-stats strong { display: block; font-size: 1.3rem; }
.profile-stats span { font-size: 0.8rem; color: var(--text-muted); }
.grams-balance-big { margin-left: auto; text-align: center; }
.grams-num { font-size: 2.5rem; font-weight: 800; color: var(--green); }
.grams-label { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.grams-list { list-style: none; font-size: 0.9rem; }
.grams-list li { padding: 0.3rem 0; border-bottom: 1px solid var(--border); }
.grams-list li:last-child { border-bottom: none; }
.grams-entry { display: flex; gap: 0.5rem; font-size: 0.85rem; padding: 0.3rem 0; border-bottom: 1px solid var(--border); }
.grams-plus { color: var(--green); font-weight: 700; min-width: 35px; }
.grams-minus { color: var(--danger); font-weight: 700; min-width: 35px; }
.grams-note { color: var(--text-muted); }

/* Progress bar */
.rank-progress { margin-top: 0.75rem; }
.progress-bar { background: var(--border); border-radius: 10px; height: 10px; overflow: hidden; margin-bottom: 0.4rem; }
.progress-fill { background: linear-gradient(90deg, var(--green), var(--green-light)); height: 100%; border-radius: 10px; transition: width 0.5s; }

/* Breadcrumb */
.breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1.5rem; }
.breadcrumb a { color: var(--green); }

/* Category header */
.category-header { margin-bottom: 1.5rem; }
.category-header h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.category-header p { color: var(--text-muted); margin-bottom: 1rem; }

/* Pagination */
.pagination { display: flex; gap: 0.5rem; margin-top: 1.5rem; }
.pagination a { padding: 0.5rem 0.9rem; border: 1px solid var(--border); border-radius: 6px; color: var(--text); }
.pagination a.active { background: var(--green); color: white; border-color: var(--green); }
.pagination.inline { margin-top: 0; }

/* Welcome page */
.welcome-card { padding: 2.5rem; text-align: center; }
.grams-badge { background: var(--green); color: white; display: inline-block; padding: 0.6rem 1.5rem; border-radius: 30px; font-weight: 700; font-size: 1.1rem; margin: 1rem 0; }
.welcome-steps { text-align: left; margin: 2rem 0; display: flex; flex-direction: column; gap: 1.25rem; }
.step { display: flex; gap: 1rem; align-items: flex-start; }
.step-num { width: 36px; height: 36px; background: var(--green); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }

/* Referral */
.referral-box { background: var(--green-pale); border-radius: var(--radius); padding: 1.25rem; margin-top: 1.5rem; }
.referral-link { display: flex; gap: 0.5rem; margin-top: 0.75rem; }
.referral-link .form-control { flex: 1; }

/* Stat row */
.stat-row { display: flex; justify-content: space-between; padding: 0.4rem 0; font-size: 0.9rem; border-bottom: 1px solid var(--border); }
.stat-row:last-child { border-bottom: none; }

/* Rank ladder */
.rank-ladder { list-style: none; font-size: 0.9rem; }
.rank-ladder li { padding: 0.4rem 0; border-bottom: 1px solid var(--border); }
.rank-ladder li:last-child { border-bottom: none; }

/* Footer */
.footer { background: var(--green-dark); color: rgba(255,255,255,0.8); padding: 3rem 0 1.5rem; margin-top: 4rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer h4 { color: white; margin-bottom: 0.75rem; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 0.4rem; }
.footer ul li a { color: rgba(255,255,255,0.7); font-size: 0.9rem; }
.footer ul li a:hover { color: white; text-decoration: none; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.15); padding-top: 1.5rem; font-size: 0.8rem; opacity: 0.7; }

/* Muted */
.muted { color: var(--text-muted); font-size: 0.85rem; }

/* Topic row small */
.topic-row-sm { display: flex; justify-content: space-between; padding: 0.5rem 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.topic-row-sm:last-child { border-bottom: none; }

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

/* Error page */
.error-page { padding: 4rem; text-align: center; }

/* Admin */
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th { background: var(--green-pale); padding: 0.75rem; text-align: left; font-weight: 600; }
td { padding: 0.75rem; border-bottom: 1px solid var(--border); }
tr:hover td { background: var(--green-pale); }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 1.8rem; }
  .main-layout { grid-template-columns: 1fr; }
  .sidebar { order: -1; }
  .post-card { grid-template-columns: 1fr; }
  .post-author { display: flex; align-items: center; gap: 1rem; border-right: none; border-bottom: 1px solid var(--border); }
  .category-card { grid-template-columns: 40px 1fr; }
  .cat-stats { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open { display: flex; flex-direction: column; width: 100%; padding-top: 0.5rem; }
  .profile-header { flex-direction: column; }
  .grams-balance-big { margin-left: 0; }
}