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

body {
    background-color: #f4f7f9;
    color: #2c3e50;
    line-height: 1.6;
    padding-bottom: 40px;
}

.main-header {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: #ffffff;
    text-align: center;
    padding: 2.5rem 1rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.main-header h1 {
    font-size: 2.2rem;
    margin-bottom: 0.4rem;
}

.main-header p {
    font-size: 1rem;
    opacity: 0.9;
}

.container {
    max-width: 850px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    gap: 2rem;
}

.card {
    background: #ffffff;
    padding: 1.8rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.card h2 {
    margin-bottom: 1.2rem;
    padding-bottom: 0.6rem;
    border-bottom: 2px solid #eef2f5;
    color: #1e3c72;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}

.date-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

input[type="text"],
input[type="date"],
input[type="number"] {
    padding: 0.65rem 0.8rem;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 0.95rem;
}

input:focus {
    outline: none;
    border-color: #2a5298;
    box-shadow: 0 0 0 2px rgba(42, 82, 152, 0.15);
}

button {
    cursor: pointer;
    border: none;
    border-radius: 6px;
    padding: 0.7rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 600;
    transition: background 0.2s ease;
}

.btn-primary {
    background-color: #2a5298;
    color: #ffffff;
    width: 100%;
    margin-top: 0.5rem;
}

.btn-primary:hover {
    background-color: #1e3c72;
}

.btn-secondary {
    background-color: #10b981;
    color: #ffffff;
}

.btn-secondary:hover {
    background-color: #059669;
}

.btn-delete {
    background-color: #ef4444;
    color: #ffffff;
    padding: 0.35rem 0.7rem;
    font-size: 0.8rem;
}

.btn-delete:hover {
    background-color: #dc2626;
}

/* Trip Summary Box */
.trip-summary {
    margin-top: 1.5rem;
    background-color: #f8fafc;
    border-left: 4px solid #2a5298;
    padding: 1rem 1.2rem;
    border-radius: 0 6px 6px 0;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
    border-bottom: 1px dashed #e2e8f0;
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-item .label {
    font-weight: 600;
    color: #64748b;
}

.summary-item .value {
    font-weight: 700;
    color: #1e293b;
}

/* Budget Form & Table */
.budget-form {
    display: grid;
    grid-template-columns: 1.2fr 1.5fr 1fr auto;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.budget-table {
    width: 100%;
    border-collapse: collapse;
}

.budget-table th,
.budget-table td {
    padding: 0.85rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.budget-table th {
    background-color: #f1f5f9;
    font-weight: 600;
    color: #475569;
}

.text-right {
    text-align: right !important;
}

.text-center {
    text-align: center !important;
}

.total-row td {
    background-color: #f8fafc;
    font-size: 1.05rem;
    color: #1e3c72;
    border-top: 2px solid #cbd5e1;
}

@media (max-width: 650px) {
    .date-row,
    .budget-form {
        grid-template-columns: 1fr;
    }
}