*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary:      #f59e0b;
    --primary-dark: #b77910;
    --success:      #10b981;
    --warning:      #f59e0b;
    --danger:       #ef4444;
    --dark:         #0f172a;
    --gray:         #64748b;
    --light:        #f1f5f9;
    --border:       #e2e8f0;
    --white:        #ffffff;
    --nav-h:        100px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--light);
    color: var(--dark);
    min-height: 100vh;
}

/* ── TOPBAR ── */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    background: linear-gradient(135deg, #e7e7e7 0%, #e9e9e9 100%);
    z-index: 100;
    box-shadow: 0 2px 12px rgba(0, 0, 0, .25);
}

.topbar-inner {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 1.25rem;
    gap: 10px;
}

.topbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.topbar-brand img {
    height: 60px;
    width: auto;
    object-fit: contain;
    display: block;
}

.topbar-nav {
    display: flex;
    align-items: center;
    gap: 3px;
    flex: 1;
    background: rgb(150 109 233);
    padding: 14px 8px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .2);
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 13px;
    border-radius: 10px;
    color: rgba(255,255,255,.9);
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    background: none;
    border: none;
    transition: .2s;
    white-space: nowrap;
    font-family: inherit;
}
.nav-btn:hover { color: white; background: rgba(0,0,0,.2); }
.nav-btn.active {
    color: #92400e;
    background: white;
    box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.user-badge {
    background: rgba(58 204 246);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 8px;
    padding: 5px 12px;
    color: white;
    font-size: .8rem;
    text-align: right;
}
.user-badge strong { display: block; font-size: .85rem; }
.user-badge span   { color: rgba(255,255,255,.7); font-size: .72rem; }

.btn-salir {
    background: rgba(0,0,0,.2);
    border: 1px solid rgba(255,255,255,.25);
    color: white;
    padding: 6px 14px;
    border-radius: 7px;
    font-size: .8rem;
    font-weight: 600;
    cursor: pointer;
    transition: .2s;
    font-family: inherit;
}
.btn-salir:hover { background: rgb(4 4 4 / 54%); }

/* ── PAGE ── */
.page {
    margin-top: var(--nav-h);
    padding: 1.75rem 1.5rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* ── TABS ── */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── ALERTS ── */
#alerts { margin-bottom: 1rem; }
.alert {
    padding: .85rem 1.1rem; border-radius: 8px; margin-bottom: .5rem;
    font-size: .9rem; display: flex; align-items: center; gap: .6rem;
}
.alert.success { background: #ecfdf5; color: #065f46; border-left: 4px solid var(--success); }
.alert.error   { background: #fef2f2; color: #991b1b; border-left: 4px solid var(--danger); }
.alert.warning { background: #fffbeb; color: #92400e; border-left: 4px solid var(--warning); }

/* ── PAGE TITLE ── */
.page-title-row {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 1.5rem; gap: 1rem;
}
.page-title-row h1 { font-size: 1.5rem; font-weight: 800; color: var(--dark); }

/* ── METRICS ── */
.metrics {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 1rem; margin-bottom: 1.5rem;
}
.metric-card {
    background: white; border-radius: 12px; padding: 1.25rem 1.5rem;
    box-shadow: 0 1px 4px rgba(0,0,0,.06); border-left: 4px solid var(--primary); transition: .2s;
}
.metric-card:hover { box-shadow: 0 6px 16px rgba(0,0,0,.1); transform: translateY(-2px); }
.metric-card.green  { border-left-color: var(--success); }
.metric-card.orange { border-left-color: #f97316; }
.metric-card.red    { border-left-color: var(--danger); }
.metric-label { font-size: .72rem; font-weight: 700; text-transform: uppercase; color: var(--gray); margin-bottom: .4rem; letter-spacing: .04em; }
.metric-value { font-size: 1.75rem; font-weight: 800; color: var(--dark); line-height: 1; }
.metric-sub   { font-size: .75rem; color: var(--gray); margin-top: .3rem; }

/* ── TABLE CARD ── */
.table-card {
    background: white; border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06); margin-bottom: 1.5rem; overflow: hidden;
}
.table-card-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); gap: 1rem;
}
.table-card-header h2 { font-size: 1rem; font-weight: 700; }

table { width: 100%; border-collapse: collapse; font-size: .875rem; }
thead tr { background: var(--light); }
th {
    text-align: left; padding: .7rem 1rem; font-size: .72rem;
    text-transform: uppercase; color: var(--gray); font-weight: 700;
    letter-spacing: .04em; white-space: nowrap;
}
td { padding: .8rem 1rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #f8fafc; }

/* ── BUTTONS ── */
.btn {
    display: inline-flex; align-items: center; gap: .4rem;
    padding: .55rem 1.1rem; border: none; border-radius: 8px;
    font-size: .875rem; font-weight: 600; cursor: pointer; transition: .2s;
    text-decoration: none; font-family: inherit;
}
.btn-primary { background: linear-gradient(135deg, #966de9, #7f6ea3); color: white; }
.btn-primary:hover { opacity: .9; transform: translateY(-1px); }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #059669; }
.btn-danger  { background: var(--danger); color: white; }
.btn-ghost   { background: var(--light); color: var(--dark); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--border); }
.btn-sm { padding: .35rem .75rem; font-size: .78rem; }

/* ── FORM PANEL ── */
.form-panel {
    background: white; border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
    padding: 1.5rem; margin-bottom: 1.5rem; border-top: 3px solid var(--primary);
}
.form-panel h2 { font-size: 1rem; font-weight: 700; margin-bottom: 1.25rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-grid .full { grid-column: 1 / -1; }
.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-group label {
    font-size: .78rem; font-weight: 700; color: var(--gray);
    text-transform: uppercase; letter-spacing: .03em;
}
.form-group input,
.form-group select,
.form-group textarea {
    padding: .6rem .8rem; border: 1.5px solid var(--border); border-radius: 8px;
    font-size: .9rem; font-family: inherit; background: #fafafa; transition: .15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(245,158,11,.15); background: white;
}
.form-actions { display: flex; gap: .75rem; margin-top: 1.25rem; }

/* ── BADGES ── */
.badge {
    display: inline-block; padding: .2rem .65rem;
    border-radius: 20px; font-size: .72rem; font-weight: 700;
}
.badge-ok      { background: #dcfce7; color: #166534; }
.badge-bajo    { background: #fef3c7; color: #92400e; }
.badge-sin     { background: #fee2e2; color: #991b1b; }
.badge-info    { background: #dbeafe; color: #1e40af; }
.badge-purple  { background: #ede9fe; color: #5b21b6; }
.badge-gray    { background: #f1f5f9; color: #475569; }

/* ── STOCK ALERTS ── */
.stock-alert-card {
    background: #fffbeb; border: 1px solid #fde68a; border-radius: 10px;
    padding: 1rem 1.25rem; margin-bottom: .5rem;
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.stock-alert-card.critico { background: #fef2f2; border-color: #fecaca; }

/* ── ROLE GUARD ── */
.gerente-only { display: none; }

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
    .user-badge strong { display: none; }
}
@media (max-width: 900px) {
    .nav-btn span { display: none; }
    .nav-btn { padding: 8px 10px; }
}
@media (max-width: 768px) {
    .metrics { grid-template-columns: 1fr 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .form-grid .full { grid-column: 1; }
}
@media (max-width: 480px) {
    .metrics { grid-template-columns: 1fr; }
    .page { padding: 1rem; }
}