/* ============================================================
   EtiQube SyncSign Portal v2 - Foglio di stile principale
   ============================================================
   Convenzioni:
   - Variabili CSS in :root
   - Reset minimo
   - Mobile-first
   - No framework esterni
   ============================================================ */

:root {
    --color-bg:           #f4f6f8;
    --color-surface:      #ffffff;
    --color-border:       #e1e4e8;
    --color-text:         #1f2328;
    --color-text-muted:   #57606a;
    --color-primary:      #1f6feb;
    --color-primary-dark: #1158c7;
    --color-success:      #1a7f37;
    --color-warning:      #b08800;
    --color-danger:       #cf222e;
    --color-info:         #0969da;

    --color-imp-bg:       #fff8c5;
    --color-imp-border:   #d4a72c;
    --color-imp-text:     #633c01;

    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --font-mono:  ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

    --radius:     6px;
    --shadow-sm:  0 1px 2px rgba(0,0,0,0.06);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.08);
}

/* ----------- Reset / base ------------- */
*, *::before, *::after { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-stack);
    font-size: 14px;
    line-height: 1.5;
}

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

code, pre {
    font-family: var(--font-mono);
    background: #eef1f4;
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.92em;
}

pre {
    padding: 12px;
    overflow-x: auto;
    border: 1px solid var(--color-border);
}

h1, h2, h3, h4 { margin: 0 0 12px 0; line-height: 1.25; }
h1 { font-size: 24px; }
h2 { font-size: 20px; }
h3 { font-size: 16px; }

hr { border: 0; border-top: 1px solid var(--color-border); margin: 18px 0; }

/* ----------- Layout struttura ------------- */
.topbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.topbar-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}

.brand a {
    font-weight: 700;
    font-size: 16px;
    color: var(--color-text);
}
.brand a:hover { text-decoration: none; }

.mainnav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    flex: 1;
    margin-left: 20px;
}

.mainnav a {
    padding: 6px 12px;
    color: var(--color-text-muted);
    border-radius: var(--radius);
    font-weight: 500;
}
.mainnav a:hover {
    background: var(--color-bg);
    color: var(--color-text);
    text-decoration: none;
}
.nav-admin { color: var(--color-primary) !important; }
.navsep { color: var(--color-border); margin: 0 4px; }

.userbox {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
}

.user-tenant { color: var(--color-text-muted); font-style: italic; }
.user-email  { color: var(--color-text); }

.user-role {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.role-super_admin   { background: #ffefc1; color: #6e4400; }
.role-tenant_admin  { background: #d4f4d2; color: #1a4d18; }
.role-editor        { background: #d8e7ff; color: #0d3a8a; }
.role-viewer        { background: #eee; color: #555; }

.main-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px 20px;
}

.footer {
    text-align: center;
    padding: 20px;
    color: var(--color-text-muted);
}

/* ----------- Banner impersonation ------------- */
#impersonation-banner {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-imp-bg);
    border-bottom: 2px solid var(--color-imp-border);
    color: var(--color-imp-text);
    padding: 10px 20px;
    text-align: center;
    font-size: 13px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

#impersonation-banner code {
    background: rgba(0,0,0,0.08);
    color: var(--color-imp-text);
    border-radius: 3px;
    padding: 1px 5px;
}

#impersonation-banner form {
    display: inline;
    margin-left: 12px;
}

body.is-impersonating .topbar { border-top: 4px solid var(--color-imp-border); }

/* ----------- Flash messages ------------- */
.flash {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    border: 1px solid transparent;
}
.flash-success { background: #dcfce7; color: #14532d; border-color: #86efac; }
.flash-error   { background: #fee2e2; color: #7f1d1d; border-color: #fca5a5; }
.flash-warning { background: #fef3c7; color: #713f12; border-color: #fde68a; }
.flash-info    { background: #dbeafe; color: #1e3a8a; border-color: #93c5fd; }

/* ----------- Card / Section ------------- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.card h2 {
    margin-top: 0;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.card-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

/* ----------- KPI grid ------------- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.kpi {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow-sm);
}

.kpi-label {
    color: var(--color-text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.kpi-value {
    font-size: 28px;
    font-weight: 700;
    margin-top: 6px;
    color: var(--color-text);
}

.kpi-sub {
    color: var(--color-text-muted);
    font-size: 12px;
    margin-top: 4px;
}

.kpi-warning .kpi-value { color: var(--color-warning); }
.kpi-danger  .kpi-value { color: var(--color-danger); }
.kpi-success .kpi-value { color: var(--color-success); }

/* ----------- Form ------------- */
form .field {
    margin-bottom: 14px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 13px;
}

label .req { color: var(--color-danger); }

input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="url"], select, textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    background: var(--color-surface);
    color: var(--color-text);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(31,111,235,0.15);
}

textarea { min-height: 80px; resize: vertical; font-family: var(--font-mono); }

.form-help {
    color: var(--color-text-muted);
    font-size: 12px;
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

@media (max-width: 640px) {
    .form-row { grid-template-columns: 1fr; }
}

/* ----------- Buttons ------------- */
button, .btn {
    display: inline-block;
    padding: 7px 14px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    border-radius: var(--radius);
    cursor: pointer;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    line-height: 1.4;
    transition: all 0.15s;
}

button:hover, .btn:hover {
    background: var(--color-bg);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }

.btn-success { background: var(--color-success); border-color: var(--color-success); color: #fff; }
.btn-warning { background: var(--color-warning); border-color: var(--color-warning); color: #fff; }
.btn-danger  { background: var(--color-danger);  border-color: var(--color-danger);  color: #fff; }

.btn-danger-sm {
    padding: 3px 8px;
    font-size: 11px;
    background: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}
.btn-danger-sm:hover { background: #a3151f; }

.btn-link {
    background: none;
    border: none;
    color: var(--color-primary);
    padding: 4px;
}
.btn-link:hover { background: none; text-decoration: underline; }

.btn-sm { padding: 4px 10px; font-size: 12px; }

button[disabled], .btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ----------- Tables ------------- */
.table-wrap {
    overflow-x: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

table.data {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

table.data th, table.data td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

table.data th {
    background: var(--color-bg);
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
}

table.data tr:last-child td { border-bottom: none; }
table.data tr:hover td { background: #fafbfc; }

.table-actions {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

/* Badge stati */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}
.badge-online   { background: #d4f4d2; color: #1a4d18; }
.badge-offline  { background: #fee2e2; color: #7f1d1d; }
.badge-warning  { background: #fef3c7; color: #713f12; }
.badge-info     { background: #dbeafe; color: #1e3a8a; }
.badge-muted    { background: #eee; color: #555; }

/* Battery indicator */
.bat-bar {
    display: inline-block;
    width: 50px; height: 12px;
    border: 1px solid var(--color-border);
    border-radius: 3px;
    position: relative;
    vertical-align: middle;
    background: var(--color-surface);
}
.bat-fill {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    background: var(--color-success);
    transition: width 0.3s;
}
.bat-fill.bat-low      { background: var(--color-warning); }
.bat-fill.bat-critical { background: var(--color-danger); }

/* ----------- Login screen ------------- */
.login-wrap {
    max-width: 380px;
    margin: 80px auto;
    padding: 32px;
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.login-wrap h1 {
    text-align: center;
    margin-bottom: 24px;
    font-size: 22px;
}

.login-wrap .login-sub {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: 24px;
    font-size: 13px;
}

.login-wrap button[type="submit"] {
    width: 100%;
    padding: 10px;
    margin-top: 8px;
}

/* ----------- Misc ------------- */
.muted { color: var(--color-text-muted); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: 16px; }
.spacer { height: 16px; }
.nowrap { white-space: nowrap; }

.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
}
.empty-state h3 { color: var(--color-text); }

.specs-box {
    background: #f6f8fa;
    border-left: 4px solid var(--color-info);
    padding: 12px 16px;
    border-radius: var(--radius);
    margin: 12px 0;
    font-size: 13px;
}

/* ----------- Secret status indicators ------------- */
.secret-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 8px;
    vertical-align: middle;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.secret-status-set {
    background: #d4f4d2;
    color: #1a4d18;
}
.secret-status-empty {
    background: #f1f1f1;
    color: #777;
}
.secret-status-set::before {
    content: "●●●●●●";
    letter-spacing: 1px;
    font-size: 8px;
    color: #1a7f37;
    margin-right: 2px;
}
.secret-hint {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text-muted);
    background: #f6f8fa;
    padding: 2px 6px;
    border-radius: 3px;
    margin-left: 6px;
    border: 1px solid var(--color-border);
}
.secret-hint::before {
    content: "ultimi 4: ";
    color: #999;
}

/* Input con stato "configurato": bordo verde sottile a sinistra */
input.has-secret-set {
    border-left: 3px solid var(--color-success);
}

/* Responsive nav */
@media (max-width: 768px) {
    .topbar-inner { flex-direction: column; align-items: flex-start; }
    .mainnav { margin-left: 0; }
    .userbox { font-size: 12px; }
}