/* VN Solar – Admin Stylesheet */

:root {
    --admin-sidebar: #1f2328;
    --admin-sidebar-hover: #2d333b;
    --admin-accent: #16a34a;
    --admin-accent-light: #dcfce7;
    --admin-border: #e5e7eb;
    --admin-surface: #f7f8fa;
    --admin-text: #1f2328;
    --admin-muted: #57606a;
}

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

body {
    font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
    background: var(--admin-surface);
    color: var(--admin-text);
    font-size: 14px;
    line-height: 1.6;
}

/* ── Layout ──────────────────────── */
.admin-layout { display: flex; min-height: 100vh; }

.admin-sidebar {
    width: 240px;
    background: var(--admin-sidebar);
    color: #e6edf3;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    overflow-y: auto;
    z-index: 100;
}
.admin-sidebar .brand {
    padding: 1.25rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -.03em;
    border-bottom: 1px solid #2d333b;
    color: #fff;
}
.admin-sidebar .brand span { color: #22c55e; }

.admin-sidebar nav a {
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: .65rem 1.5rem;
    color: #adb5bd;
    text-decoration: none;
    font-size: .875rem;
    font-weight: 500;
    transition: background .15s, color .15s;
    border-left: 3px solid transparent;
}
.admin-sidebar nav a:hover,
.admin-sidebar nav a.active {
    background: var(--admin-sidebar-hover);
    color: #fff;
    border-left-color: var(--admin-accent);
}
.admin-sidebar nav .nav-section {
    padding: 1rem 1.5rem .35rem;
    font-size: .65rem;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: #57606a;
}

.admin-main { margin-left: 240px; flex: 1; display: flex; flex-direction: column; min-width: 0; }

.admin-topbar {
    background: #fff;
    border-bottom: 1px solid var(--admin-border);
    padding: .85rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}
.admin-topbar h1 { font-size: 1rem; font-weight: 700; color: var(--admin-text); }
.admin-topbar .topbar-actions { display: flex; gap: .75rem; align-items: center; }

.admin-content { padding: 1.5rem; flex: 1; }

/* ── Cards / Stats ───────────────── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
    background: #fff;
    border: 1px solid var(--admin-border);
    border-radius: .75rem;
    padding: 1.25rem;
}
.stat-card .stat-label { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--admin-muted); margin-bottom: .35rem; }
.stat-card .stat-value { font-size: 1.75rem; font-weight: 800; color: var(--admin-text); line-height: 1.2; }
.stat-card .stat-sub { font-size: .78rem; color: var(--admin-muted); margin-top: .25rem; }

/* ── Table ───────────────────────── */
.admin-panel {
    background: #fff;
    border: 1px solid var(--admin-border);
    border-radius: .75rem;
    overflow: hidden;
    margin-bottom: 1.5rem;
}
.admin-panel .panel-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}
.admin-panel .panel-header h2 { font-size: .95rem; font-weight: 700; }

table { width: 100%; border-collapse: collapse; }
table th {
    background: var(--admin-surface);
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--admin-muted);
    padding: .7rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--admin-border);
}
table td {
    padding: .75rem 1rem;
    border-bottom: 1px solid #f3f4f6;
    font-size: .875rem;
    vertical-align: middle;
}
table tr:last-child td { border-bottom: none; }
table tr:hover td { background: #fafafa; }

/* ── Buttons ─────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: .4rem;
    padding: .45rem .9rem;
    border-radius: .5rem;
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: background .15s, transform .1s;
    text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--admin-accent); color: #fff; }
.btn-primary:hover { background: #15803d; }
.btn-secondary { background: var(--admin-surface); color: var(--admin-text); border: 1px solid var(--admin-border); }
.btn-danger { background: #fee2e2; color: #b91c1c; }
.btn-danger:hover { background: #fecaca; }
.btn-sm { padding: .3rem .65rem; font-size: .78rem; }

/* ── Badges ──────────────────────── */
.badge { display: inline-block; padding: .15rem .6rem; border-radius: 9999px; font-size: .72rem; font-weight: 600; }
.badge-active   { background: #dcfce7; color: #15803d; }
.badge-draft    { background: #fef9c3; color: #854d0e; }
.badge-inactive { background: #f3f4f6; color: #6b7280; }

/* ── Form ────────────────────────── */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: .82rem; font-weight: 600; color: var(--admin-text); margin-bottom: .35rem; }
.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: .55rem .85rem;
    border: 1.5px solid var(--admin-border);
    border-radius: .5rem;
    font-size: .875rem;
    outline: none;
    transition: border-color .2s;
    background: #fff;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--admin-accent);
    box-shadow: 0 0 0 3px rgba(22,163,74,.12);
}
.form-textarea { min-height: 100px; resize: vertical; }

/* ── Modal ───────────────────────── */
.modal-overlay {
    position: fixed; inset: 0; z-index: 200;
    background: rgba(0,0,0,.4);
    backdrop-filter: blur(2px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal-box {
    background: #fff;
    border-radius: .875rem;
    width: 100%;
    max-width: 520px;
    box-shadow: 0 20px 60px rgba(0,0,0,.2);
    overflow: hidden;
}
.modal-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-header h3 { font-size: .95rem; font-weight: 700; }
.modal-body { padding: 1.25rem; }
.modal-footer { padding: 1rem 1.25rem; border-top: 1px solid var(--admin-border); display: flex; justify-content: flex-end; gap: .5rem; }

/* ── Alert ───────────────────────── */
.alert { padding: .75rem 1rem; border-radius: .5rem; font-size: .85rem; font-weight: 500; margin-bottom: 1rem; display: none; }
.alert.show { display: block; }
.alert-success { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
.alert-danger  { background: #fee2e2; color: #b91c1c; border: 1px solid #fecaca; }

/* ── Login page ──────────────────── */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}
.login-card {
    background: #fff;
    border-radius: 1rem;
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
}

/* ── Responsive ──────────────────── */
@media (max-width: 768px) {
    .admin-sidebar { transform: translateX(-100%); transition: transform .25s; }
    .admin-sidebar.open { transform: translateX(0); }
    .admin-main { margin-left: 0; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
}