:root {
    /* Font sizes */
    --font-size-base: 1rem;
    --font-size-small: 0.875rem;
    --font-size-large: 1.125rem;

    /* Primary colors */
    --color-primary: #1c75bb;
    --color-primary-dark: #155c94;
    --color-primary-light: #5fa3d5;

    /* Secondary colors */
    --color-secondary: #ffc16f;
    --color-secondary-dark: #ffac42;
    --color-secondary-light: #ffdb9c;

    /* Accent color (a complementary purple) */
    --color-accent: #9c59b6;
    --color-accent-dark: #7d3c98;
    --color-accent-light: #be90d4;

    /* Neutral colors */
    --color-neutral-light: #f5f7fa;
    --color-neutral: #e4e7ed;
    --color-neutral-dark: #c0c4cc;

    /* Text colors */
    --color-text: #333333;
    --color-text-light: #ffffff;

    /* Status colors */
    --color-success: #2ecc71;
    --color-warning: #f39c12;
    --color-error: #e74c3c;

    /* Border colors */
    --color-border: #d1d5db;
}

/* Form Sections */
.donor-info-section,
.payment-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border: 2px solid var(--color-neutral);
    border-radius: 0.75rem;
    background-color: var(--color-neutral-light);
}

.donor-info-section h3,
.payment-section h3 {
    margin: 0 0 1rem 0;
    color: var(--color-primary);
    font-size: var(--font-size-large);
    font-weight: bold;
}

/* Form Fields */
.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-field {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.form-field label {
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--color-text);
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field textarea {
    padding: 0.75rem;
    border: 2px solid var(--color-border);
    border-radius: 0.5rem;
    font-size: var(--font-size-base);
    transition:
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.form-field input[type="text"]:focus,
.form-field input[type="email"]:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(28, 117, 187, 0.1);
}

.form-field input.error,
.form-field textarea.error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
    background-color: rgba(231, 76, 60, 0.02);
}

.form-field textarea {
    resize: vertical;
    min-height: 80px;
}

.required {
    color: var(--color-error);
    margin-left: 2px;
}

/* Error message styling */
.field-error {
    color: var(--color-error);
    font-size: var(--font-size-small);
    font-weight: 500;
    margin-top: 0.5rem;
    display: block;
    line-height: 1.4;
    animation: errorSlideIn 0.3s ease-out;
}

@keyframes errorSlideIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Checkboxes Section */
.checkboxes-section {
    margin-top: 1.5rem;
}

.checkbox-field {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
    gap: 0;
}

.checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.checkbox-field input[type="checkbox"] {
    margin-top: 0.25rem;
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.checkbox-field label {
    flex: 1;
    line-height: 1.5;
    color: var(--color-text);
    margin: 0;
}

.checkbox-field.required-checkbox label {
    font-weight: bold;
}

.checkbox-field.required-checkbox.has-error {
    background-color: rgba(231, 76, 60, 0.02);
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(231, 76, 60, 0.2);
}

.checkbox-field .field-error {
    margin-top: 0.5rem;
    margin-left: 0;
    width: 100%;
}

.checkbox-field input[type="checkbox"].error {
    outline: 2px solid var(--color-error);
    outline-offset: 2px;
}

.checkbox-field a {
    color: var(--color-primary);
    text-decoration: underline;
}

.checkbox-field a:hover {
    color: var(--color-primary-dark);
}

/* Radio Groups (existing styles enhanced) */
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625em;
    margin-bottom: 1.25em;
    justify-content: space-around;
}

.radio-group label {
    display: flex;
    align-items: center;
    padding: 0.625em 0.9375em;
    border: 0.125em solid var(--color-border);
    border-radius: 0.3125em;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.radio-group input[type="radio"] {
    display: none;
}

.radio-group input[type="radio"]:checked + label {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border-color: var(--color-primary);
}

.radio-group label:hover {
    background-color: var(--color-neutral-light);
}

.radio-group input[type="radio"]:checked + label:hover {
    background-color: var(--color-primary-dark);
}

/* Payment type specific styles */
.radio-group.payment-type {
    justify-content: center;
    margin-bottom: 1.875em;
}

.radio-group.payment-type label {
    flex: 1;
    justify-content: center;
    background-color: var(--color-neutral-light);
    border-color: var(--color-neutral);
    font-weight: bold;
}

.radio-group.payment-type input[type="radio"]:checked + label {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
}

.radio-group.payment-type input[type="radio"]:checked + label:hover {
    background-color: var(--color-secondary-dark);
}

/* Amount options specific styles */
.radio-group.amount-options {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 0.625em;
}

.radio-group.amount-options label {
    flex: 1 1 calc(25% - 0.625em);
    justify-content: center;
    min-width: 6.25em;
}

.radio-group.amount-options label[for="amountCustom"] {
    flex: 1 1 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

#customAmount {
    margin-left: 0.3125em;
    width: 5em;
    padding: 0.3125em;
    border: 0.125em solid var(--color-border);
    border-radius: 0.3125em;
    font-size: var(--font-size-base);
}

/* Button Styles */
.btn-primary,
#simplify-payment-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border: none;
    border-radius: 0.5rem;
    font-size: var(--font-size-large);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-decoration: none;
    text-align: center;
}

.btn-primary:hover,
#simplify-payment-button:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--color-neutral);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    border-radius: 0.5rem;
    font-size: var(--font-size-base);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
}

.btn-secondary:hover {
    background-color: var(--color-neutral-dark);
    border-color: var(--color-neutral-dark);
}

#proceed-to-payment {
    width: 100%;
    margin-top: 1.5rem;
}

/* Payment Summary */
.payment-summary {
    background-color: var(--color-neutral-light);
    border: 2px solid var(--color-primary);
    border-radius: 0.75rem;
    padding: 2rem;
}

.payment-summary h3 {
    margin: 0 0 1.5rem 0;
    color: var(--color-primary);
    font-size: var(--font-size-large);
    text-align: center;
}

.summary-details {
    background-color: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--color-primary);
}

.summary-details p {
    margin: 0.5rem 0;
    font-size: var(--font-size-base);
}

.summary-details strong {
    color: var(--color-primary);
}

.payment-buttons {
    display: flex;
    gap: 1rem;
    justify-content: space-between;
    align-items: center;
}

.payment-buttons .btn-secondary {
    flex: 1;
}

.payment-buttons #simplify-payment-button {
    flex: 2;
}

/* Messages */
#form-message,
#payment-message {
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    text-align: center;
    display: none;
    font-size: var(--font-size-base);
    font-weight: bold;
    border: 2px solid transparent;
}

#form-message.error,
#payment-message.error {
    background-color: var(--color-error);
    color: var(--color-text-light);
    border-color: var(--color-error);
}

#form-message.warning,
#payment-message.warning {
    background-color: var(--color-warning);
    color: var(--color-text-light);
    border-color: var(--color-warning);
}

#form-message.success,
#payment-message.success {
    background-color: var(--color-success);
    color: var(--color-text-light);
    border-color: var(--color-success);
}

/* Thank You Page Styles */
.thank-you-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: 2rem 1rem;
}

.thank-you-content {
    background-color: white;
    max-width: 500px;
    width: 100%;
    border-radius: 1rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    animation: thankYouSlideIn 0.5s ease-out;
}

@keyframes thankYouSlideIn {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.thank-you-header {
    background: linear-gradient(
        135deg,
        var(--color-primary),
        var(--color-primary-light)
    );
    color: white;
    padding: 2rem 1.5rem;
    text-align: center;
}

.thank-you-header h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: bold;
}

.thank-you-body {
    padding: 2rem;
    text-align: center;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.thank-you-body p {
    margin-bottom: 1rem;
    line-height: 1.6;
    color: var(--color-text);
}

.donation-details {
    background-color: var(--color-neutral-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
    border-left: 4px solid var(--color-primary);
}

.donation-details p {
    margin: 0.5rem 0;
    color: var(--color-text);
}

.donation-details strong {
    color: var(--color-primary);
}

.note {
    font-size: var(--font-size-small);
    color: var(--color-text);
    font-style: italic;
    margin-top: 1.5rem;
}

.thank-you-footer {
    padding: 1rem 2rem 2rem;
    text-align: center;
}

/* Confetti Animation */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    animation: confettiFall linear infinite;
}

@keyframes confettiFall {
    to {
        transform: translateY(100vh) rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 1rem;
    }

    .donor-info-section,
    .payment-section,
    .payment-summary {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }

    .payment-buttons {
        flex-direction: column;
    }

    .payment-buttons .btn-secondary,
    .payment-buttons #simplify-payment-button {
        flex: none;
        width: 100%;
    }

    .thank-you-container {
        padding: 1rem;
        min-height: 50vh;
    }

    .thank-you-content {
        margin: 0;
        width: 100%;
    }

    .thank-you-body {
        padding: 1.5rem;
    }

    .thank-you-header h1 {
        font-size: 1.25rem;
    }

    .radio-group.amount-options label {
        flex: 1 1 calc(50% - 0.625em);
    }
}

@media (max-width: 480px) {
    .radio-group.amount-options label {
        flex: 1 1 100%;
    }

    .thank-you-header {
        padding: 1.5rem 1rem;
    }

    .thank-you-header h1 {
        font-size: 1.1rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 0.75rem 1.5rem;
        font-size: var(--font-size-base);
    }

    .summary-details,
    .donation-details {
        padding: 1rem;
    }
}