/* ============================================================
   CHLOE SINGING SCHOOL — Admin Panel CSS
   Brand: Rosso Porpora #8B0042 | Light & Dark Mode
   ============================================================ */

/* ── Tema Dark (default) ── */
:root {
    --brand-primary:   #8B0042;
    --brand-secondary: #6a0032;
    --brand-accent:    #c0005e;
    --text-white:      #FFFFFF;
    --bg-dark:         #121212;
    --bg-card:         #1E1E1E;
    --bg-sidebar:      #0f0f0f;
    --bg-surface:      #252525;
    --bg-elevated:     #2C2C2C;
    --border-color:    #333333;
    --text-primary:    #FFFFFF;
    --text-muted:      #aaaaaa;
    --text-body:       #dddddd;
    --success:         #28a745;
    --warning:         #e6a817;
    --danger:          #dc3545;
    --radius:          10px;
    --shadow:          0 4px 20px rgba(0,0,0,0.4);
    --transition:      0.2s ease;
    --sidebar-link:    #cccccc;
    --table-row-hover: rgba(255,255,255,0.03);
    --badge-paid-bg:   #1a4d2e;   --badge-paid-txt:   #4ade80;
    --badge-pend-bg:   #3a2e0a;   --badge-pend-txt:   #fbbf24;
    --badge-over-bg:   #3a0a0a;   --badge-over-txt:   #f87171;
    --badge-info-bg:   #0a2d3a;   --badge-info-txt:   #38bdf8;
    --btn-sec-bg:      #252525;   --btn-sec-txt:      #cccccc;
    --btn-sec-hover:   #333333;
    --btn-danger-bg:   #7c1c1c;
    --btn-success-bg:  #1a4d2e;
    --alert-err-bg:    #3a0a0a;   --alert-err-txt:    #f87171;
    --alert-ok-bg:     #0a3a1a;   --alert-ok-txt:     #4ade80;
    --login-shadow:    0 8px 40px rgba(0,0,0,0.6);
}

/* ── Tema Light ── */
:root.light, body.light {
    --bg-dark:         #f0f2f5;
    --bg-card:         #ffffff;
    --bg-sidebar:      #ffffff;
    --bg-surface:      #f7f8fa;
    --bg-elevated:     #eef0f3;
    --border-color:    #e0e0e0;
    --text-primary:    #1a1a1a;
    --text-white:      #1a1a1a;
    --text-muted:      #777777;
    --text-body:       #333333;
    --shadow:          0 2px 12px rgba(0,0,0,0.08);
    --sidebar-link:    #444444;
    --table-row-hover: rgba(139,0,66,0.03);
    --badge-paid-bg:   #d1fae5;   --badge-paid-txt:   #065f46;
    --badge-pend-bg:   #fef3c7;   --badge-pend-txt:   #92400e;
    --badge-over-bg:   #fee2e2;   --badge-over-txt:   #991b1b;
    --badge-info-bg:   #dbeafe;   --badge-info-txt:   #1e40af;
    --btn-sec-bg:      #f0f2f5;   --btn-sec-txt:      #444444;
    --btn-sec-hover:   #e0e0e0;
    --btn-danger-bg:   #fee2e2;
    --btn-success-bg:  #d1fae5;
    --alert-err-bg:    #fee2e2;   --alert-err-txt:    #991b1b;
    --alert-ok-bg:     #d1fae5;   --alert-ok-txt:     #065f46;
    --login-shadow:    0 8px 40px rgba(0,0,0,0.12);
}

/* ── Transizione fluida al cambio tema ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0; padding: 0;
    transition: background-color .25s ease, border-color .25s ease, color .15s ease;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
}

/* ── Toggle tema ── */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: .82rem;
    font-weight: 600;
    user-select: none;
    transition: all .2s;
}
.theme-toggle:hover { border-color: var(--brand-primary); color: var(--brand-accent); }
.theme-toggle .icon { font-size: 1rem; }

/* ── Sidebar ── */
.sidebar {
    width: 260px;
    min-height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
}

.sidebar-brand {
    padding: 28px 20px 24px;
    border-bottom: 1px solid var(--border-color);
}
.sidebar-brand .logo-icon { font-size: 2rem; display: block; margin-bottom: 8px; }
.sidebar-brand h1 { font-size: 1rem; font-weight: 700; color: var(--brand-accent); line-height: 1.3; letter-spacing: .5px; }
.sidebar-brand span { font-size: .72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

.sidebar-nav { flex: 1; padding: 16px 0; overflow-y: auto; }

.nav-section-label {
    font-size: .65rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    padding: 12px 20px 6px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 20px;
    color: var(--sidebar-link);
    text-decoration: none;
    font-size: .9rem;
    border-left: 3px solid transparent;
    transition: all var(--transition);
}
.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(139,0,66,0.1);
    color: var(--brand-primary);
    border-left-color: var(--brand-primary);
}
.sidebar-nav a .icon { font-size: 1.1rem; width: 22px; text-align: center; }

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    font-size: .82rem;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.sidebar-footer a { color: var(--brand-accent); text-decoration: none; }

/* ── Main Content ── */
.main-content {
    margin-left: 260px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.topbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 0 28px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    gap: 16px;
}
.topbar h2 { font-size: 1.05rem; font-weight: 600; color: var(--text-primary); flex: 1; }
.topbar .admin-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: .85rem;
    color: var(--text-muted);
}

.page-content { padding: 28px; flex: 1; }

/* ── Cards ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}
.card-header h3 { font-size: 1rem; font-weight: 600; color: var(--text-primary); }

/* ── Stats Grid ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 18px;
    margin-bottom: 28px;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--brand-primary);
    transition: transform var(--transition);
}
.stat-card:hover { transform: translateY(-2px); }
.stat-icon { font-size: 2rem; }
.stat-info .label { font-size: .78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
.stat-info .value { font-size: 1.8rem; font-weight: 700; color: var(--text-primary); line-height: 1.2; }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: .88rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition);
}
.btn-primary           { background: var(--brand-primary); color: #fff; }
.btn-primary:hover     { background: var(--brand-accent); }
.btn-secondary         { background: var(--btn-sec-bg); color: var(--btn-sec-txt); border: 1px solid var(--border-color); }
.btn-secondary:hover   { background: var(--btn-sec-hover); color: var(--text-primary); }
.btn-danger            { background: var(--btn-danger-bg); color: var(--badge-over-txt); border: 1px solid var(--badge-over-bg); }
.btn-danger:hover      { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-success           { background: var(--btn-success-bg); color: var(--badge-paid-txt); border: 1px solid var(--badge-paid-bg); }
.btn-success:hover     { background: var(--success); color: #fff; border-color: var(--success); }
.btn-sm                { padding: 5px 12px; font-size: .8rem; }

/* ── Tables ── */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
thead th {
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .8px;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
tbody tr { border-bottom: 1px solid var(--border-color); transition: background var(--transition); }
tbody tr:hover { background: var(--table-row-hover); }
tbody td { padding: 12px 16px; color: var(--text-body); }
tfoot td { padding: 12px 16px; }

/* ── Badges ── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: .75rem;
    font-weight: 600;
}
.badge-paid    { background: var(--badge-paid-bg); color: var(--badge-paid-txt); }
.badge-pending { background: var(--badge-pend-bg); color: var(--badge-pend-txt); }
.badge-overdue { background: var(--badge-over-bg); color: var(--badge-over-txt); }
.badge-active  { background: var(--badge-info-bg); color: var(--badge-info-txt); }

/* ── Forms ── */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: .85rem;
    color: var(--text-muted);
    font-weight: 500;
}
.form-control {
    width: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 10px 14px;
    font-size: .9rem;
    transition: border-color var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(139,0,66,.15);
}
/* Select option colore nel light */
.form-control option { background: var(--bg-card); color: var(--text-primary); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

/* ── Alerts ── */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    font-size: .88rem;
    margin-bottom: 18px;
    text-align: left;
}
.alert-error   { background: var(--alert-err-bg); border-left: 4px solid var(--danger);  color: var(--alert-err-txt); }
.alert-success { background: var(--alert-ok-bg);  border-left: 4px solid var(--success); color: var(--alert-ok-txt); }

/* ── Login Page ── */
.login-wrapper {
    min-height: 100vh;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
	text-align: center;
    width: 100%;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--login-shadow);
    text-align: center;
}
.login-logo   { font-size: 3rem; margin-bottom: 12px; }
.login-title  { font-size: 1.4rem; font-weight: 700; color: var(--brand-accent); margin-bottom: 4px; }
.login-subtitle {
    font-size: .82rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
/* Toggle tema nella login */
.login-theme-toggle {
    position: fixed;
    top: 16px; right: 20px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .sidebar { width: 0; overflow: hidden; }
    .main-content { margin-left: 0; }
    .form-row { grid-template-columns: 1fr; }
}
/* ── Logo scuola ── */
.sidebar-brand .logo-img { display: block; max-width: 100%; height: auto; margin-bottom: 10px; }
.login-logo .logo-img { display: block; width: 270px; max-width: 100%; height: auto; margin: 0 auto; }