:root {
    --bg-color: #e0e5ec;
    --text-color: #44476a;
    --shadow-dark: #a3b1c6;
    --shadow-light: #ffffff;
    --accent-color: #6d5dfc;
    --accent-hover: #5b4afc;
    --error-color: #e74c3c;
    --success-color: #2ecc71;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.main-wrapper {
    max-width: 1000px;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -1px;
    color: var(--text-color);
    text-shadow: 2px 2px 4px var(--shadow-dark), -1px -1px 2px var(--shadow-light);
    margin-bottom: 0.5rem;
}

header .subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--shadow-dark);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
}

/* Neumorphic Card Base */
.card-outer {
    background: var(--bg-color);
    border-radius: 30px;
    box-shadow: 9px 9px 16px var(--shadow-dark),
        -9px -9px 16px var(--shadow-light);
    padding: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.input-outer {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.input-outer label {
    font-size: 0.9rem;
    font-weight: 700;
    padding-left: 0.5rem;
    color: var(--text-color);
}

.input-outer input,
.input-outer select {
    background: var(--bg-color);
    border: none;
    padding: 1rem 1.2rem;
    border-radius: 15px;
    box-shadow: inset 5px 5px 10px var(--shadow-dark),
        inset -5px -5px 10px var(--shadow-light);
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 500;
    outline: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.input-outer input:focus,
.input-outer select:focus {
    box-shadow: inset 8px 8px 15px var(--shadow-dark),
        inset -8px -8px 15px var(--shadow-light);
    color: var(--accent-color);
}

.location-select {
    grid-column: span 2;
}

.location-select select {
    width: 100%;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2344476a' viewBox='0 0 16 16'%3E%3Cpath d='M8 10.5l-5-5h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.btn-neumorph {
    grid-column: span 2;
    margin-top: 1rem;
    background: var(--bg-color);
    border: none;
    padding: 1.2rem;
    border-radius: 20px;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--accent-color);
    cursor: pointer;
    box-shadow: 6px 6px 12px var(--shadow-dark),
        -6px -6px 12px var(--shadow-light);
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-neumorph:hover {
    color: var(--accent-hover);
    transform: scale(0.98);
}

.btn-neumorph:active {
    box-shadow: inset 4px 4px 8px var(--shadow-dark),
        inset -4px -4px 8px var(--shadow-light);
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.result-display {
    text-align: center;
    background: var(--bg-color);
}

.result-display h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.price-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    text-shadow: 1px 1px 2px var(--shadow-light);
}

.price-unit {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--shadow-dark);
}

.info-box h4 {
    margin-bottom: 1rem;
    color: var(--text-color);
    font-weight: 800;
    text-transform: uppercase;
}

.info-box p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-color);
}

.error-msg {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 1rem;
    font-weight: 600;
}

/* Spinner Animation */
.spinner {
    width: 40px;
    height: 40px;
    margin: 1rem auto;
    border: 4px solid var(--bg-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: 3px 3px 6px var(--shadow-dark), -2px -2px 5px var(--shadow-light);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@media (max-width: 900px) {
    .container {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 2.5rem;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .btn-neumorph {
        grid-column: span 1;
    }
}