/* ============================================================
   Theme tokens
   ============================================================ */
:root,
[data-theme="light"] {
    --bg-app: #f5f5f3;
    --bg-sidebar: #faf9f7;
    --bg-card: #ffffff;
    --bg-hover: #efeeec;
    --bg-active: #e9e7e3;
    --fg: #1f1f1f;
    --fg-muted: #6b6b6b;
    --fg-subtle: #8a8a8a;
    --border: #e5e5e3;
    --border-strong: #d4d4d2;
    --primary: #c96a4a;
    --primary-hover: #b85b3d;
    --primary-fg: #ffffff;
    --danger: #b91c1c;
    --success: #15803d;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    color-scheme: light;
}

[data-theme="dark"] {
    --bg-app: #1f1f1f;
    --bg-sidebar: #181818;
    --bg-card: #262626;
    --bg-hover: #2e2e2e;
    --bg-active: #383838;
    --fg: #ededeb;
    --fg-muted: #9a9a98;
    --fg-subtle: #707070;
    --border: #2e2e2e;
    --border-strong: #3a3a3a;
    --primary: #d97757;
    --primary-hover: #e4886a;
    --primary-fg: #ffffff;
    --danger: #ef4444;
    --success: #22c55e;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif;
    color: var(--fg);
    background: var(--bg-app);
    -webkit-font-smoothing: antialiased;
}

body.with-sidebar {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

body.no-sidebar { display: block; }

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 12px 10px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px 14px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 10px;
}

.brand {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--fg);
    text-decoration: none;
}
.brand:hover { color: var(--fg); }

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 6px;
    color: var(--fg);
    font-size: 0.92rem;
    font-weight: 500;
    transition: background 0.12s ease;
}
.sidebar-nav a svg { color: var(--fg-muted); flex-shrink: 0; }
.sidebar-nav a:hover { background: var(--bg-hover); color: var(--fg); }
.sidebar-nav a.active { background: var(--bg-active); color: var(--fg); }
.sidebar-nav a.active svg { color: var(--fg); }

.sidebar-bottom {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.user-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    border-radius: 8px;
}
.user-card:hover { background: var(--bg-hover); }

.avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--primary-fg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.user-meta { flex: 1; min-width: 0; }
.user-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--fg);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.user-role { font-size: 0.72rem; color: var(--fg-muted); text-transform: lowercase; }

.logout-form { display: flex; }

/* Theme toggle: muestra sólo el ícono opuesto al tema activo */
.theme-toggle .icon-light { display: none; }
.theme-toggle .icon-dark { display: block; }
[data-theme="dark"] .theme-toggle .icon-light { display: block; }
[data-theme="dark"] .theme-toggle .icon-dark { display: none; }

.icon-btn {
    background: transparent;
    border: 0;
    color: var(--fg-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.12s ease, color 0.12s ease;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--fg); }

/* ============================================================
   Main content
   ============================================================ */
.main {
    padding: 28px 36px 60px;
    max-width: 1200px;
    width: 100%;
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 1rem;
    letter-spacing: -0.01em;
}
h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.muted { color: var(--fg-muted); }
.right { text-align: right; }
.nowrap { white-space: nowrap; }

/* ============================================================
   Cards (dashboard)
   ============================================================ */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}
.card {
    background: var(--bg-card);
    padding: 1.25rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    color: var(--fg);
    transition: border-color 0.15s ease, transform 0.15s ease;
    box-shadow: var(--shadow);
}
.card:hover { border-color: var(--border-strong); }
.card h2 { margin: 0 0 0.25rem; font-size: 0.9rem; font-weight: 500; color: var(--fg-muted); }
.card p { margin: 0; font-size: 1.4rem; font-weight: 600; color: var(--fg); }

/* ============================================================
   Forms / buttons
   ============================================================ */
button, .btn {
    background: var(--primary);
    color: var(--primary-fg);
    border: 0;
    padding: 0.55rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: background 0.12s ease;
}
button:hover, .btn:hover { background: var(--primary-hover); color: var(--primary-fg); }
button.link, a.link {
    background: transparent;
    color: var(--primary);
    padding: 0;
    font-weight: 500;
}
button.link:hover, a.link:hover { background: transparent; color: var(--primary-hover); }
button.danger { background: var(--danger); }

input, select, textarea {
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    font-size: 0.92rem;
    background: var(--bg-card);
    color: var(--fg);
    font-family: inherit;
}
input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--primary);
    outline-offset: -1px;
    border-color: var(--primary);
}
input::placeholder { color: var(--fg-subtle); }

label { display: block; margin-bottom: 0.5rem; color: var(--fg); font-size: 0.9rem; }
label > input, label > select { display: block; width: 100%; margin-top: 0.25rem; }

.form-inline {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    align-items: center;
    background: var(--bg-card);
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
}

/* ============================================================
   Tables
   ============================================================ */
.grid {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.grid th, .grid td {
    padding: 0.65rem 0.85rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}
.grid th {
    background: var(--bg-app);
    font-weight: 600;
    color: var(--fg-muted);
    text-transform: uppercase;
    font-size: 0.74rem;
    letter-spacing: 0.04em;
}
.grid tbody tr:hover { background: var(--bg-hover); }
.grid tbody tr:last-child td { border-bottom: 0; }

/* ============================================================
   Flash messages
   ============================================================ */
.flash {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}
.flash-error { background: rgba(185, 28, 28, 0.1); color: var(--danger); border: 1px solid rgba(185, 28, 28, 0.25); }
.flash-success { background: rgba(21, 128, 61, 0.1); color: var(--success); border: 1px solid rgba(21, 128, 61, 0.25); }

/* ============================================================
   Login (sin sidebar)
   ============================================================ */
.no-sidebar .main {
    padding: 0;
    max-width: none;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-card);
    padding: 2rem 2.25rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.login-card h1 { margin-top: 0; }
.login-card form { display: flex; flex-direction: column; gap: 0.8rem; }
.login-card label { margin-bottom: 0; }

/* ============================================================
   Detail blocks (ventas/productos)
   ============================================================ */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem 2rem;
    background: var(--bg-card);
    padding: 1.1rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
}
.detail-grid dt { font-weight: 500; color: var(--fg-muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.2rem; }
.detail-grid dd { margin: 0 0 0.4rem; color: var(--fg); font-size: 0.95rem; }

/* ============================================================
   Search results (autocompletar ERP en form productos)
   ============================================================ */
.search-results {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-card);
}
.search-results .item {
    padding: 0.55rem 0.85rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    color: var(--fg);
}
.search-results .item:hover { background: var(--bg-hover); }
.search-results .item:last-child { border-bottom: 0; }
.search-results .item small { color: var(--fg-muted); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 720px) {
    body.with-sidebar { grid-template-columns: 1fr; }
    .sidebar {
        position: relative;
        height: auto;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        gap: 8px;
    }
    .sidebar-top { width: 100%; border-bottom: 0; padding-bottom: 4px; margin-bottom: 4px; }
    .sidebar-nav { flex-direction: row; flex: 1 1 100%; flex-wrap: wrap; gap: 4px; }
    .sidebar-nav a { padding: 6px 10px; font-size: 0.85rem; }
    .sidebar-bottom { width: 100%; margin: 0; padding-top: 8px; }
    .main { padding: 18px; }
}