/* ================================================================
   Internship Management System — Theme (Green / Lavender)
   ================================================================ */
:root {
    --brand-green: #2f7d54;
    --brand-green-dark: #1f5c3d;
    --brand-green-light: #eaf6ef;
    --brand-lavender: #b9a7e6;
    --brand-lavender-dark: #8f7cc7;
    --brand-lavender-light: #f3f0fb;
    --sidebar-width: 260px;
}

body {
    background: linear-gradient(180deg, var(--brand-lavender-light) 0%, #f7f5fc 100%);
}

.card {
    border: 0;
    border-radius: 14px;
    box-shadow: 0 2px 10px rgba(90, 70, 150, 0.08);
}

.btn-brand {
    background: var(--brand-green);
    border-color: var(--brand-green);
    color: #fff;
}
.btn-brand:hover, .btn-brand:focus {
    background: var(--brand-green-dark);
    border-color: var(--brand-green-dark);
    color: #fff;
}

.badge.bg-secondary {
    background: var(--brand-lavender-dark) !important;
}

/* ---------------- Sidebar ---------------- */
.sidebar-panel {
    width: var(--sidebar-width);
    height: 100vh;
    position: sticky;
    top: 0;
    background: linear-gradient(180deg, var(--brand-green-dark) 0%, var(--brand-green) 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 1040;
}

.sidebar-brand {
    padding: 1.1rem 1rem 0.8rem;
    font-weight: 600;
    font-size: 1.1rem;
    color: #fff;
    display: flex;
    align-items: center;
    gap: .5rem;
}

.sidebar-nav-scroll {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 0.5rem 0.75rem;
}
.sidebar-nav-scroll::-webkit-scrollbar { width: 6px; }
.sidebar-nav-scroll::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.25); border-radius: 4px; }

.sidebar-footer {
    flex-shrink: 0;
    padding: 0.75rem 1rem 1rem;
    border-top: 1px solid rgba(255,255,255,0.15);
}

/* Card-style nav items */
.nav-card {
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: .6rem .75rem;
    margin-bottom: .4rem;
    border-radius: 10px;
    background: rgba(255,255,255,0.06);
    color: #fff;
    text-decoration: none;
    font-size: .93rem;
    transition: background .15s ease, transform .1s ease;
}
.nav-card i { font-size: 1.05rem; }
.nav-card:hover {
    background: rgba(255,255,255,0.16);
    color: #fff;
}
.nav-card.active {
    background: var(--brand-lavender);
    color: #2b1d4d;
    font-weight: 600;
}

.account-toggle {
    display: flex;
    align-items: center;
    gap: .5rem;
    color: #fff;
    text-decoration: none;
}

/* ---------------- Mobile hamburger toggle ---------------- */
.sidebar-toggle-btn {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1060;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--brand-green);
    color: #fff;
    border: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(20, 10, 40, 0.45);
    z-index: 1035;
}

@media (max-width: 991.98px) {
    .sidebar-toggle-btn {
        display: flex;
    }
    .sidebar-panel {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        transform: translateX(-100%);
        transition: transform .25s ease;
        box-shadow: 4px 0 18px rgba(0,0,0,.25);
    }
    .sidebar-panel.open {
        transform: translateX(0);
    }
    .sidebar-backdrop.show {
        display: block;
    }
    .content-area, .flex-grow-1 {
        padding-top: 4rem !important;
    }
}