:root {
    --primary-gold: #DAAE00;
    --primary-blue: #658BE6;
    --dark-gray: #333333;
    --black: #000000;
    --white: #FFFFFF;
    
    /* Dark mode variables (default) */
    --bg-gradient-start: var(--dark-gray);
    --bg-gradient-end: var(--black);
    --container-bg: var(--dark-gray);
    --header-bg-start: var(--black);
    --header-bg-end: var(--dark-gray);
    --text-color: var(--white);
    --text-secondary: #cccccc;
    --input-bg: #404040;
    --input-border: #555555;
    --input-text: var(--white);
    --section-border: #555555;
    --section-title-color: var(--primary-gold);
    --section-border-accent: var(--primary-gold);
    --mushroom-section-bg: var(--dark-gray);
    --checkbox-bg: var(--dark-gray);
    --pricing-bg-start: var(--black);
    --pricing-bg-end: var(--dark-gray);
    --error-color: #ff6b6b;
}

[data-theme="light"] {
    --bg-gradient-start: var(--white);
    --bg-gradient-end: var(--white);
    --container-bg: var(--white);
    --header-bg-start: var(--primary-blue);
    --header-bg-end: var(--primary-gold);
    --text-color: var(--black);
    --text-secondary: #666666;
    --input-bg: #f8f9fa;
    --input-border: #dddddd;
    --input-text: var(--black);
    --section-border: #f0f0f0;
    --section-title-color: var(--primary-blue);
    --section-border-accent: var(--primary-blue);
    --mushroom-section-bg: var(--white);
    --checkbox-bg: var(--white);
    --pricing-bg-start: var(--primary-blue);
    --pricing-bg-end: var(--primary-gold);
    --error-color: #e74c3c;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-gradient-start);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.theme-toggle-container {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 10;
}

.theme-toggle-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
}

.theme-toggle {
    position: relative;
    width: 60px;
    height: 30px;
    background: var(--dark-gray);
    border-radius: 15px;
    border: 2px solid var(--black);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 22px;
    height: 22px;
    background: var(--primary-gold);
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .theme-toggle {
    background: var(--white);
}

[data-theme="light"] .theme-toggle::before {
    transform: translateX(28px);
    background: var(--primary-blue);
}

[data-theme="light"] .theme-toggle-label {
    color: var(--black);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--container-bg);
    border-radius: 15px;
    border: 3px solid var(--black);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    overflow: hidden;
    position: relative;
    transition: all 0.3s ease;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 20px;
    background: var(--black);
    z-index: 1;
}

.header {
    background: var(--dark-gray);
    color: var(--white);
    padding: 30px;
    text-align: center;
    border: 2px solid var(--black);
    box-shadow: inset 0 -3px 6px rgba(0, 0, 0, 0.2);
    border-radius: 15px 15px 0 0;
    position: relative;
    z-index: 2;
}

[data-theme="light"] .header {
    background: var(--primary-blue);
    border: 2px solid var(--black);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border-radius: 15px 15px 0 0;
    position: relative;
    z-index: 2;
}

[data-theme="light"] .container::before {
    background: var(--black);
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.2em;
    opacity: 0.9;
}

.form-container {
    padding: 40px;
}

.form-section {
    margin-bottom: 35px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--section-border);
}

.form-section:last-child {
    border-bottom: none;
}

.section-title {
    font-size: 1.8em;
    color: var(--section-title-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--section-border-accent);
    display: inline-block;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.form-group {
    flex: 1;
    min-width: 250px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.1em;
}

input, select, textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--black);
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: var(--input-bg);
    color: var(--input-text);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 10px rgba(101, 139, 230, 0.3), 0 2px 6px rgba(0, 0, 0, 0.2);
}

input:disabled, select:disabled {
    background: var(--section-border);
    color: var(--text-secondary);
    cursor: not-allowed;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.description {
    font-size: 0.95em;
    color: var(--text-secondary);
    margin-top: 5px;
    font-style: italic;
}

.mushroom-section {
    background: var(--mushroom-section-bg);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 20px;
    border: 2px solid var(--black);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.mushroom-title {
    font-size: 1.4em;
    color: var(--primary-gold);
    margin-bottom: 15px;
    font-weight: bold;
}

.mushroom-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 15px;
    background: var(--checkbox-bg);
    border-radius: 8px;
    border: 2px solid var(--black);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
}

.option-label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.1em;
    flex: 1;
}

.spinner-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.spinner-btn {
    background: var(--primary-blue);
    color: var(--white);
    border: 2px solid var(--black);
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
}

.spinner-btn:hover {
    background: var(--primary-gold);
    color: var(--black);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.spinner-btn:disabled {
    background: var(--section-border);
    cursor: not-allowed;
    transform: none;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.spinner-input {
    width: 60px;
    text-align: center;
    margin: 0;
}

.pricing-display {
    background: var(--dark-gray);
    color: var(--white);
    padding: 25px;
    border-radius: 12px;
    margin-top: 20px;
    border: 2px solid var(--black);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .pricing-display {
    background: var(--primary-blue);
}

.pricing-title {
    font-size: 1.5em;
    margin-bottom: 15px;
    text-align: center;
}

.price-breakdown {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    padding: 8px 0;
}

.total-price {
    border-top: 2px solid rgba(255,255,255,0.3);
    padding-top: 15px;
    margin-top: 15px;
    font-size: 1.3em;
    font-weight: bold;
    text-align: center;
}

.radio-group {
    display: flex;
    gap: 30px;
    margin-top: 10px;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 8px;
}

.radio-option input[type="radio"] {
    width: auto;
    transform: scale(1.2);
    accent-color: var(--primary-blue);
}

.submit-btn {
    background: var(--primary-blue);
    color: var(--white);
    padding: 15px 40px;
    border: 2px solid var(--black);
    border-radius: 50px;
    font-size: 1.2em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    margin: 30px auto 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
    background: var(--primary-gold);
    color: var(--black);
}

.error-message {
    color: var(--error-color);
    font-size: 0.9em;
    margin-top: 5px;
    display: none;
}

@media (max-width: 600px) {
    .form-row {
        flex-direction: column;
    }
    
    .quantity-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .radio-group {
        flex-direction: column;
        gap: 15px;
    }
}