:root {
    --bg: #f4f7fb;
    --panel: #ffffff;
    --text: #121626;
    --muted: #687084;
    --line: #e6eaf2;
    --primary: #4d47e0;
    --primary-2: #6d68ff;
    --dark: #121626;
    --success: #0f9f6e;
    --danger: #d93f3f;
    --warning: #b7791f;
    --radius: 22px;
    --shadow: 0 18px 45px rgba(18, 22, 38, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top left, rgba(77,71,224,.12), transparent 34%), var(--bg);
    color: var(--text);
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }

.app-shell { min-height: 100vh; display: flex; }
.sidebar {
    width: 292px;
    background: linear-gradient(180deg, #121626 0%, #1a2140 100%);
    color: #fff;
    padding: 22px;
    position: fixed;
    inset: 0 auto 0 0;
    display: flex;
    flex-direction: column;
    z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand.center { justify-content: center; margin-bottom: 22px; }
.brand-icon {
    width: 46px; height: 46px; border-radius: 16px;
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #fff; font-weight: 900;
    box-shadow: 0 10px 25px rgba(77, 71, 224, .35);
}
.brand strong { display: block; line-height: 1.1; }
.brand span { display: block; color: rgba(255,255,255,.62); font-size: .82rem; margin-top: 3px; }
.nav { display: grid; gap: 8px; margin-top: 32px; }
.nav a {
    padding: 13px 14px; border-radius: 16px; color: rgba(255,255,255,.76);
    transition: .2s ease; font-weight: 700;
}
.nav a:hover, .nav a.active { background: rgba(255,255,255,.1); color: #fff; }
.user-box { margin-top: auto; padding: 16px; background: rgba(255,255,255,.08); border-radius: 18px; }
.user-box small { display: block; color: rgba(255,255,255,.56); }
.user-box strong { display: block; margin: 4px 0 10px; }
.user-box a { color: #fff; font-weight: 800; }

.main { margin-left: 292px; width: calc(100% - 292px); padding: 24px; }
.topbar {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    margin-bottom: 22px;
}
.topbar h1 { margin: 0; font-size: clamp(1.45rem, 2.5vw, 2.2rem); letter-spacing: -.03em; }
.topbar p { margin: 5px 0 0; color: var(--muted); }
.menu-btn { display: none; border: 0; background: var(--panel); border-radius: 14px; padding: 12px 14px; box-shadow: var(--shadow); }
.top-actions { display: flex; gap: 10px; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 16px; border-radius: 15px; border: 0; cursor: pointer;
    font-weight: 900; transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; box-shadow: 0 14px 25px rgba(77,71,224,.25); }
.btn.dark { background: var(--dark); color: #fff; }
.btn.ghost { background: #fff; color: var(--text); border: 1px solid var(--line); }
.btn.full { width: 100%; }

.alert { padding: 14px 16px; border-radius: 16px; margin: 14px 0; font-weight: 700; }
.alert.success { background: rgba(15,159,110,.12); color: #08734f; }
.alert.danger { background: rgba(217,63,63,.12); color: #a12222; }
.alert.warning { background: rgba(183,121,31,.14); color: #85530d; }
.alert a { text-decoration: underline; }

.hero-card, .panel, .metric-card, .stock-card, .auth-card, .install-card {
    background: rgba(255,255,255,.86);
    border: 1px solid rgba(230,234,242,.9);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}
.hero-card {
    border-radius: 30px; padding: 28px;
    display: flex; justify-content: space-between; align-items: center; gap: 22px;
    margin-bottom: 22px;
}
.eyebrow { color: var(--primary); font-size: .78rem; text-transform: uppercase; font-weight: 1000; letter-spacing: .08em; }
.hero-card h2 { font-size: clamp(1.35rem, 2.5vw, 2rem); margin: 8px 0; letter-spacing: -.03em; }
.hero-card p { color: var(--muted); max-width: 720px; margin: 0; line-height: 1.6; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 18px; }
.metric-card { border-radius: 22px; padding: 20px; }
.metric-card span { color: var(--muted); font-weight: 800; font-size: .86rem; }
.metric-card strong { display: block; margin: 8px 0 4px; font-size: 2.1rem; letter-spacing: -.04em; }
.metric-card .small-metric { font-size: 1.25rem; }
.metric-card small { color: var(--muted); }

.panel { border-radius: 24px; padding: 18px; margin-bottom: 18px; }
.section-title h2 { margin: 0 0 4px; letter-spacing: -.02em; }
.section-title p { margin: 0 0 18px; color: var(--muted); }
.filters { display: grid; grid-template-columns: minmax(220px, 1fr) 180px 170px auto auto; gap: 12px; align-items: end; }
label { display: grid; gap: 7px; color: var(--muted); font-size: .86rem; font-weight: 900; }
input, select, textarea {
    width: 100%; border: 1px solid var(--line); border-radius: 15px; padding: 13px 14px;
    background: #fff; color: var(--text); outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(77,71,224,.1); }

.stock-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.stock-card { border-radius: 24px; padding: 18px; }
.stock-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.stock-card h3 { margin: 10px 0 0; font-size: 1.05rem; line-height: 1.25; }
.stock-card-head > strong {
    min-width: 45px; height: 45px; border-radius: 15px; display: grid; place-items: center;
    background: rgba(77,71,224,.1); color: var(--primary); font-size: 1.15rem;
}
.pill { display: inline-flex; padding: 6px 9px; border-radius: 999px; background: #eef0ff; color: var(--primary); font-size: .72rem; font-weight: 1000; }
.variation-list { margin-top: 16px; display: grid; gap: 8px; }
.variation-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; background: #f7f8fc; border-radius: 14px; }
.variation-row span { font-weight: 800; }
.variation-row b { color: var(--dark); }

.empty-state { grid-column: 1 / -1; background: #fff; border: 1px dashed var(--line); border-radius: 24px; padding: 34px; text-align: center; }
.empty-state p { color: var(--muted); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { text-align: left; padding: 13px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
.status { display: inline-flex; padding: 6px 10px; border-radius: 999px; font-size: .76rem; font-weight: 1000; }
.status.success { background: rgba(15,159,110,.12); color: #08734f; }
.status.error { background: rgba(217,63,63,.12); color: #a12222; }
.status.running, .status.ignored { background: rgba(77,71,224,.12); color: var(--primary); }

.form-stack { display: grid; gap: 14px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-grid.wide { max-width: 960px; }
.span-2 { grid-column: span 2; }
.copy-box { display: flex; gap: 10px; align-items: center; }
.hint { color: var(--muted); line-height: 1.6; }
.whatsapp-text { min-height: 520px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; line-height: 1.55; }
.sync-status { padding: 13px 16px; border-radius: 15px; margin-bottom: 18px; background: #eef0ff; color: var(--primary); font-weight: 800; }
.hidden { display: none !important; }

.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.auth-card, .install-card { width: min(100%, 440px); border-radius: 28px; padding: 28px; }
.install-card { width: min(100%, 860px); }
.auth-card h1, .install-card h1 { margin: 0 0 8px; letter-spacing: -.03em; }
.auth-card p, .install-card p { color: var(--muted); line-height: 1.55; }

@media (max-width: 1180px) {
    .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .stock-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .filters { grid-template-columns: 1fr 1fr; }
    .search-field { grid-column: span 2; }
}

@media (max-width: 820px) {
    .sidebar { transform: translateX(-105%); transition: transform .2s ease; width: min(84vw, 292px); }
    .sidebar.open { transform: translateX(0); }
    .main { margin-left: 0; width: 100%; padding: 16px; }
    .menu-btn { display: inline-flex; }
    .topbar { align-items: flex-start; }
    .top-actions { display: none; }
    .hero-card { flex-direction: column; align-items: flex-start; border-radius: 24px; padding: 22px; }
    .metric-grid, .stock-grid { grid-template-columns: 1fr; }
    .filters, .form-grid { grid-template-columns: 1fr; }
    .search-field, .span-2 { grid-column: auto; }
    .copy-box { flex-direction: column; }
    .copy-box .btn { width: 100%; }
}

.diagnostic-box {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.diagnostic-box p {
    margin: 0;
    padding: 14px 16px;
    border: 1px solid var(--line);
    background: #f8fafc;
    border-radius: 16px;
    color: var(--muted);
}

.diagnostic-box strong {
    color: var(--dark);
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 18px;
}

.diagnostic-table th {
    text-align: left;
    width: 260px;
}

@media (max-width: 760px) {
    .diagnostic-box {
        grid-template-columns: 1fr;
    }
}