/* RubanTea - mobile-first UI. Tea-garden green theme. */
:root {
    --green-900: #1b3a1e;
    --green-700: #1b5e20;
    --green-600: #2e7d32;
    --green-100: #e8f5e9;
    --leaf-accent: #8bc34a;
    --ink: #1f2421;
    --muted: #5f6b62;
    --bg: #f4f7f4;
    --card: #ffffff;
    --line: #dde5dd;
    --danger: #c62828;
    --radius: 12px;
    --shadow: 0 1px 4px rgba(27, 58, 30, .10);
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, 'Noto Sans Tamil', sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.55;
}
a { color: var(--green-700); text-decoration: none; }
h1, h2, h3 { color: var(--green-900); margin-top: 0; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }

/* buttons */
.btn {
    display: inline-block; padding: 10px 18px; border-radius: var(--radius);
    border: 2px solid var(--green-700); font-weight: 600; cursor: pointer;
    font-size: 1rem; background: transparent; color: var(--green-700);
}
.btn-primary { background: var(--green-700); color: #fff; }
.btn-primary:hover { background: var(--green-600); border-color: var(--green-600); }
.btn-outline:hover { background: var(--green-100); }
.btn-block { display: block; width: 100%; }
.btn-sm { padding: 5px 12px; font-size: .85rem; border-width: 1px; }

/* cards + flash */
.card {
    background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
    padding: 20px; margin-bottom: 18px;
}
.flash { padding: 12px 16px; border-radius: var(--radius); margin: 10px 0; font-weight: 500; }
.flash-success { background: var(--green-100); color: var(--green-900); border: 1px solid var(--green-600); }
.flash-error { background: #fdecea; color: var(--danger); border: 1px solid var(--danger); }

/* forms */
label { display: block; margin-bottom: 14px; font-weight: 600; color: var(--green-900); }
input, select, textarea {
    display: block; width: 100%; margin-top: 5px; padding: 11px 12px;
    border: 1px solid var(--line); border-radius: 8px; font-size: 1rem;
    font-family: inherit; background: #fff;
}
input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--leaf-accent); border-color: var(--green-600);
}

/* ── public pages ──────────────────────────────────────────────────────── */
.public-nav { background: var(--card); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
.brand { font-size: 1.3rem; font-weight: 700; color: var(--green-900); }
.public-nav nav { display: flex; gap: 14px; align-items: center; }
.public-main { min-height: 70vh; }
.public-footer {
    background: var(--green-900); color: #cfe3cf; padding: 26px 0; margin-top: 48px;
    text-align: center; font-size: .92rem;
}
.public-footer a { color: #fff; }

/* hero */
.hero { background: linear-gradient(160deg, var(--green-900), var(--green-700)); color: #fff; padding: 64px 0 56px; }
.hero h1 { color: #fff; font-size: 2rem; margin-bottom: 12px; max-width: 700px; }
.hero p { font-size: 1.12rem; max-width: 640px; opacity: .94; }
.hero .btn-primary { background: var(--leaf-accent); border-color: var(--leaf-accent); color: var(--green-900); margin-top: 18px; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin: 36px 0; }
.feature-card h3 { margin-bottom: 6px; }
.feature-icon { font-size: 1.8rem; }
.section { padding: 40px 0 8px; }
.section h2 { font-size: 1.5rem; }
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; margin: 28px 0; }
.price-card { text-align: center; }
.price-card .price { font-size: 1.7rem; font-weight: 700; color: var(--green-700); }
.price-card ul { text-align: left; padding-left: 20px; color: var(--muted); }

/* auth */
.auth-wrap { display: flex; justify-content: center; padding: 44px 16px; }
.auth-card { width: 100%; max-width: 430px; }
.auth-alt { text-align: center; margin-top: 14px; }

/* ── app shell ─────────────────────────────────────────────────────────── */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
    width: 230px; background: var(--green-900); color: #fff; flex-shrink: 0;
    display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.sidebar-brand { font-size: 1.2rem; font-weight: 700; padding: 18px 16px; border-bottom: 1px solid rgba(255,255,255,.12); }
.sidebar-nav { flex: 1; overflow-y: auto; padding: 8px 0; }
.sidebar-nav a {
    display: flex; gap: 10px; align-items: center; color: #cfe3cf;
    padding: 11px 16px; font-weight: 500;
}
.sidebar-nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar-nav a.active { background: var(--green-700); color: #fff; border-left: 4px solid var(--leaf-accent); padding-left: 12px; }
.sidebar-foot { padding: 8px 0; border-top: 1px solid rgba(255,255,255,.12); }
.sidebar-foot a {
    display: flex; gap: 10px; align-items: center; color: #cfe3cf;
    padding: 11px 16px; font-weight: 500;
}
.sidebar-foot a:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar-foot a.active { background: var(--green-700); color: #fff; border-left: 4px solid var(--leaf-accent); padding-left: 12px; }

.app-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
    display: flex; align-items: center; gap: 12px; background: var(--card);
    border-bottom: 1px solid var(--line); padding: 10px 18px; position: sticky; top: 0; z-index: 20;
}
.topbar-title { font-weight: 700; color: var(--green-900); flex: 1; }
.topbar-right { display: flex; gap: 12px; align-items: center; }
.topbar-user { font-weight: 600; }
.lang-toggle { font-weight: 600; border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px; }
.hamburger { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--green-900); }
.app-content { padding: 22px 18px; max-width: 1100px; width: 100%; }
.page-title { font-size: 1.5rem; margin-bottom: 6px; }

/* dashboard stats */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin: 18px 0 24px; }
.stat-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.stat-value { font-size: 1.45rem; font-weight: 700; color: var(--green-700); }
.stat-label { color: var(--muted); font-size: .9rem; margin-top: 2px; }
.quick-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.gs-list li { margin-bottom: 8px; }

/* module page patterns (canonical from Phase 2) */
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.page-head .page-title { margin: 0; }
.page-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.filter-card { padding: 14px; }
.filter-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.filter-form input, .filter-form select { width: auto; min-width: 150px; margin-top: 0; }
.form-card { max-width: 560px; }
.row-actions { white-space: nowrap; }
.row-actions form.inline { display: inline-block; margin-left: 6px; }
.pager { display: flex; align-items: center; gap: 14px; justify-content: center; margin: 18px 0; }

/* weighment entry (Phase 3) */
.kg-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.net-display { font-size: 1.2rem; color: var(--green-700); margin: 4px 0 14px; }
.btn-big { padding: 15px; font-size: 1.15rem; }

/* slip (Phase 3) - standalone printable page */
.slip-body { background: #fff; display: flex; justify-content: center; padding: 24px 12px; }
.slip { max-width: 360px; width: 100%; border: 1px dashed var(--line); border-radius: 8px; padding: 18px; }
.slip-head { text-align: center; margin-bottom: 12px; }
.slip-table { width: 100%; border-collapse: collapse; }
.slip-table td { padding: 6px 4px; border-bottom: 1px dotted var(--line); }
.slip-table td:last-child { text-align: right; }
.slip-net td { font-size: 1.1rem; }
.slip-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 16px; }
.slip-wide { max-width: 480px; }
.slip-pay { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 14px; }
@media print { .no-print { display: none !important; } .slip { border: none; } }

/* tables (used from Phase 2 on) */
table.data { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; }
table.data th, table.data td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }
table.data th { background: var(--green-100); color: var(--green-900); }

/* FAQ accordion (Phase 12) */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
    width: 100%; text-align: left; background: none; border: none;
    padding: 16px 4px; font-size: 1rem; font-weight: 600; color: var(--green-900);
    cursor: pointer; display: flex; justify-content: space-between; align-items: center;
}
.faq-q::after { content: '+'; font-size: 1.2rem; color: var(--green-700); }
.faq-q[aria-expanded="true"]::after { content: '-'; }
.faq-a { padding: 0 4px 16px; color: var(--muted); line-height: 1.6; }

/* billing (Phase 11) */
.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.plan-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border: 2px solid var(--line);
    transition: border-color .15s;
}
.plan-card.plan-current { border-color: var(--green-700); }
.plan-badge {
    display: inline-block;
    background: var(--green-700);
    color: #fff;
    font-size: .78rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 20px;
    align-self: flex-start;
}
.plan-name { margin: 0; font-size: 1.1rem; }
.plan-price { line-height: 1.2; }
.price-big { font-size: 1.6rem; font-weight: 800; color: var(--green-900); }
.price-period { font-size: .9rem; color: var(--muted); }
.plan-features { margin: 0; padding: 0 0 0 18px; color: var(--muted); font-size: .93rem; }
.plan-features li { margin-bottom: 4px; }
.plan-card .btn { margin-top: auto; }
.billing-grace-banner { margin-bottom: 0; border-radius: 0; }
.badge {
    display: inline-block; padding: 2px 10px; border-radius: 20px;
    font-size: .8rem; font-weight: 700; text-transform: uppercase;
}
.badge-success { background: var(--green-100); color: var(--green-900); }
.badge-warn    { background: #fff8e1; color: #7c6c00; }
.badge-danger  { background: #fdecea; color: var(--danger); }

/* PWA / offline (Phase 14) */
.offline-badge {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 20px; height: 20px; padding: 0 5px;
    background: var(--danger); color: #fff; border-radius: 10px;
    font-size: .75rem; font-weight: 700;
}
.topbar-offline-link {
    display: flex; align-items: center; gap: 4px; color: var(--danger);
    font-weight: 600; font-size: .9rem; text-decoration: none;
}
.topbar-offline-link:hover { text-decoration: underline; }
.field-hint { display: block; font-size: .8rem; color: var(--muted); font-weight: 400; margin-top: 3px; }
.sync-status.ok    { background: var(--green-100); color: var(--green-900); }
.sync-status.error { background: #fdecea; color: var(--danger); }

/* mobile */
@media (max-width: 820px) {
    .hamburger { display: block; }
    .sidebar {
        position: fixed; left: -240px; top: 0; z-index: 40; transition: left .22s ease;
        height: 100vh;
    }
    .sidebar.open { left: 0; box-shadow: 4px 0 18px rgba(0,0,0,.3); }
    .topbar-user { display: none; }
    .hero h1 { font-size: 1.55rem; }
}