/* ==========================================================
   School ERP Admin - Shared Design System
   Used by both Super Admin and School Admin panels.
   Loaded AFTER Bootstrap 5 CSS.
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
    --erp-primary: #4F46E5;
    --erp-primary-dark: #3730A3;
    --erp-primary-light: #EEF2FF;
    --erp-accent: #0D9488;
    --erp-accent-light: #CCFBF1;
    --erp-sidebar-bg: #14121F;
    --erp-sidebar-hover: #221F33;
    --erp-sidebar-text: #A5A2BD;
    --erp-sidebar-text-active: #FFFFFF;
    --erp-body-bg: #F4F5FA;
    --erp-card-bg: #FFFFFF;
    --erp-text: #1F2333;
    --erp-muted: #6B7280;
    --erp-border: #E7E8F0;
    --erp-success: #16A34A;
    --erp-success-bg: #DCFCE7;
    --erp-danger: #DC2626;
    --erp-danger-bg: #FEE2E2;
    --erp-warning: #D97706;
    --erp-warning-bg: #FEF3C7;
    --erp-info: #0284C7;
    --erp-info-bg: #E0F2FE;
    --erp-radius: 12px;
    --erp-radius-sm: 8px;
    --font-display: 'Plus Jakarta Sans', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
}

body {
    background: var(--erp-body-bg);
    font-family: var(--font-body);
    color: var(--erp-text);
    font-size: 14.5px;
}

h1, h2, h3, h4, h5, h6, .display-font {
    font-family: var(--font-display);
    color: var(--erp-text);
    letter-spacing: -0.01em;
}

a { text-decoration: none; }

/* ---------- Layout ---------- */
.erp-wrapper { display: flex; min-height: 100vh; }

.erp-sidebar {
    width: 260px;
    background: var(--erp-sidebar-bg);
    background-image: radial-gradient(circle at 20% 0%, rgba(79,70,229,0.35), transparent 55%);
    flex-shrink: 0;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    overflow-y: auto;
    z-index: 1030;
    transition: transform .25s ease;
}

.erp-sidebar .brand {
    padding: 22px 20px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.erp-sidebar .brand .logo-box {
    width: 38px; height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--erp-primary), var(--erp-accent));
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display);
    font-weight: 800;
    color: #fff;
    font-size: 16px;
}

.erp-sidebar .brand .brand-text { line-height: 1.2; }
.erp-sidebar .brand .brand-text .title { color: #fff; font-weight: 700; font-size: 15px; font-family: var(--font-display); }
.erp-sidebar .brand .brand-text .subtitle { color: var(--erp-sidebar-text); font-size: 11.5px; }

.erp-sidebar .nav-section-label {
    color: #5D5A78;
    font-size: 10.5px;
    text-transform: uppercase;
    letter-spacing: .08em;
    font-weight: 700;
    padding: 16px 20px 6px;
}

.erp-sidebar .nav-link {
    color: var(--erp-sidebar-text);
    padding: 10px 20px;
    font-size: 13.8px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 11px;
    border-left: 3px solid transparent;
    border-radius: 0;
}

.erp-sidebar .nav-link i { width: 18px; text-align: center; font-size: 15px; opacity: .9; }
.erp-sidebar .nav-link:hover { background: var(--erp-sidebar-hover); color: #fff; }
.erp-sidebar .nav-link.active {
    background: var(--erp-sidebar-hover);
    color: var(--erp-sidebar-text-active);
    border-left-color: var(--erp-accent);
}

.erp-main { margin-left: 260px; width: calc(100% - 260px); display: flex; flex-direction: column; min-height: 100vh; }

.erp-topbar {
    background: var(--erp-card-bg);
    border-bottom: 1px solid var(--erp-border);
    padding: 14px 26px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1020;
}

.erp-topbar .page-title { font-family: var(--font-display); font-weight: 700; font-size: 19px; margin: 0; }
.erp-topbar .page-subtitle { color: var(--erp-muted); font-size: 12.5px; }

.erp-content { padding: 24px 26px 60px; flex: 1; }

.sidebar-toggle-btn { display: none; }

@media (max-width: 991px) {
    .erp-sidebar { transform: translateX(-100%); }
    .erp-sidebar.open { transform: translateX(0); }
    .erp-main { margin-left: 0; width: 100%; }
    .sidebar-toggle-btn { display: inline-flex; }
}

/* ---------- Cards ---------- */
.erp-card {
    background: var(--erp-card-bg);
    border: 1px solid var(--erp-border);
    border-radius: var(--erp-radius);
    box-shadow: 0 1px 2px rgba(16,24,40,0.04);
}

.erp-card .erp-card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--erp-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.erp-card .erp-card-header h6 { font-family: var(--font-display); font-weight: 700; margin: 0; font-size: 14.5px; }
.erp-card .erp-card-body { padding: 20px; }

/* ---------- Stat cards ---------- */
.stat-card {
    background: var(--erp-card-bg);
    border: 1px solid var(--erp-border);
    border-left: 4px solid var(--erp-primary);
    border-radius: var(--erp-radius);
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 1px 2px rgba(16,24,40,0.04);
}

.stat-card .stat-value { font-family: var(--font-display); font-size: 26px; font-weight: 800; line-height: 1; }
.stat-card .stat-label { color: var(--erp-muted); font-size: 12.5px; margin-top: 6px; font-weight: 500; }
.stat-card .stat-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 19px;
    background: var(--erp-primary-light); color: var(--erp-primary);
}
.stat-card.accent-teal { border-left-color: var(--erp-accent); }
.stat-card.accent-teal .stat-icon { background: var(--erp-accent-light); color: var(--erp-accent); }
.stat-card.accent-danger { border-left-color: var(--erp-danger); }
.stat-card.accent-danger .stat-icon { background: var(--erp-danger-bg); color: var(--erp-danger); }
.stat-card.accent-warning { border-left-color: var(--erp-warning); }
.stat-card.accent-warning .stat-icon { background: var(--erp-warning-bg); color: var(--erp-warning); }

/* ---------- Buttons ---------- */
.btn-erp-primary {
    background: var(--erp-primary); border-color: var(--erp-primary); color: #fff;
    border-radius: var(--erp-radius-sm); font-weight: 600; font-size: 13.5px;
}
.btn-erp-primary:hover { background: var(--erp-primary-dark); border-color: var(--erp-primary-dark); color: #fff; }
.btn-erp-outline {
    border: 1px solid var(--erp-border); color: var(--erp-text); background: #fff;
    border-radius: var(--erp-radius-sm); font-weight: 600; font-size: 13.5px;
}
.btn-erp-outline:hover { background: var(--erp-body-bg); }

/* ---------- Tables ---------- */
.erp-table thead th {
    background: var(--erp-body-bg);
    font-family: var(--font-display);
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--erp-muted);
    font-weight: 700;
    border-bottom: 1px solid var(--erp-border);
    padding: 12px 14px;
    white-space: nowrap;
}
.erp-table tbody td { padding: 12px 14px; font-size: 13.5px; vertical-align: middle; border-bottom: 1px solid var(--erp-border); }
.erp-table tbody tr:last-child td { border-bottom: none; }
.erp-table tbody tr:hover { background: #FBFBFE; }

/* ---------- Badges ---------- */
.badge-erp { font-weight: 600; font-size: 11px; padding: 5px 10px; border-radius: 20px; }
.badge-success { background: var(--erp-success-bg); color: var(--erp-success); }
.badge-danger { background: var(--erp-danger-bg); color: var(--erp-danger); }
.badge-warning { background: var(--erp-warning-bg); color: var(--erp-warning); }
.badge-info { background: var(--erp-info-bg); color: var(--erp-info); }
.badge-neutral { background: #EEF0F5; color: var(--erp-muted); }

/* ---------- Forms ---------- */
.form-label { font-weight: 600; font-size: 13px; color: var(--erp-text); }
.form-control, .form-select {
    border-radius: var(--erp-radius-sm); border: 1px solid var(--erp-border);
    font-size: 13.8px; padding: 9px 12px;
}
.form-control:focus, .form-select:focus {
    border-color: var(--erp-primary); box-shadow: 0 0 0 3px var(--erp-primary-light);
}

/* ---------- Auth pages (login/forgot password) ---------- */
.erp-auth-wrap {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: var(--erp-sidebar-bg);
    background-image: radial-gradient(circle at 15% 20%, rgba(79,70,229,0.35), transparent 45%),
                       radial-gradient(circle at 85% 80%, rgba(13,148,136,0.3), transparent 45%);
    padding: 20px;
}
.erp-auth-card {
    width: 100%; max-width: 400px; background: #fff; border-radius: 16px;
    padding: 36px 32px; box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.erp-auth-card .logo-box {
    width: 48px; height: 48px; border-radius: 12px;
    background: linear-gradient(135deg, var(--erp-primary), var(--erp-accent));
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display); font-weight: 800; color: #fff; font-size: 20px;
    margin-bottom: 16px;
}

/* ---------- Empty state ---------- */
.erp-empty { text-align: center; padding: 50px 20px; color: var(--erp-muted); }
.erp-empty i { font-size: 40px; opacity: .35; margin-bottom: 12px; display: block; }

/* ---------- Utility ---------- */
.text-primary-erp { color: var(--erp-primary) !important; }
.avatar-circle {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--erp-primary-light); color: var(--erp-primary);
    display: inline-flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 13px; font-family: var(--font-display);
}