* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f4f6f9;
    color: #333;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* SIDEBAR STYLING */
.sidebar {
    width: 260px;
    background-color: #1e293b;
    color: #fff;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.brand {
    padding: 24px;
    border-bottom: 1px solid #334155;
}

.brand h2 { font-size: 20px; color: #f8fafc; letter-spacing: 1px; }
.brand p { font-size: 12px; color: #94a3b8; margin-top: 4px; }

.nav-menu {
    display: flex;
    flex-direction: column;
    padding: 16px 0;
}

.nav-item {
    padding: 14px 24px;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 15px;
    transition: all 0.2s;
}

.nav-item:hover, .nav-item.active {
    background-color: #0f172a;
    color: #38bdf8;
    border-left: 4px solid #38bdf8;
}

/* MAIN CONTENT & TOP BAR */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.top-bar {
    background-color: #fff;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.content-section {
    padding: 32px;
}

/* CARDS & FORMS */
.grid-container {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 24px;
}

.card {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card h4 {
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid #e2e8f0;
    color: #0f172a;
}

.form-group {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

label {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #475569;
}

input, select {
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 14px;
    outline: none;
}

input:focus, select:focus {
    border-color: #38bdf8;
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.btn-primary {
    background-color: #0284c7;
    color: white;
    border: none;
    padding: 12px 20px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    width: 100%;
    margin-top: 10px;
    transition: background 0.2s;
}

.btn-primary:hover { background-color: #0369a1; }
.btn-primary:disabled { background-color: #94a3b8; cursor: not-allowed; }

.summary-empty {
    text-align: center;
    color: #64748b;
    padding: 40px 10px;
}

.summary-box {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 16px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed #e2e8f0;
    font-size: 14px;
}

.summary-item:last-child {
    border-bottom: none;
    font-size: 16px;
    font-weight: bold;
    color: #0f172a;
    padding-top: 14px;
}

/* Sidebar Screenshot Style Overrides */
.sidebar .nav-item:hover { background: rgba(30, 41, 59, 0.6); color: #ffffff !important; }
.sidebar .nav-item.active { background: linear-gradient(90deg, #1d4ed8 0%, #1e40af 100%) !important; color: #ffffff !important; box-shadow: 0 4px 15px rgba(29, 78, 216, 0.35); font-weight: 700 !important; }
.sidebar .nav-item.active span { color: #ffffff !important; }