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

:root {
    --primary: #514D6A;
    --secondary: #FED900;
    --green: #7EBD5B;
    --pink: #EB576F;
    --teal: #109BAE;
    --lavender: #A08ABC;
    --white: #FFFFFF;
    --gray-light: #F5F5F7;
    --gray-text: #666;
    --radius: 12px;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--gray-light);
    color: var(--primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
}

.container {
    background: var(--white);
    border-radius: var(--radius);
    max-width: 480px;
    width: 100%;
    padding: 32px 28px;
    box-shadow: 0 4px 24px rgba(81, 77, 106, 0.1);
}

.hidden {
    display: none;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 24px;
}

.logo {
    height: 48px;
    width: auto;
}

/* Campaign Banner */
.campaign-banner {
    background: var(--primary);
    color: var(--white);
    padding: 24px 20px;
    border-radius: var(--radius);
    text-align: center;
    margin-bottom: 28px;
}

.campaign-banner h1 {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 8px;
}

.campaign-banner p {
    color: var(--secondary);
    font-size: 1.1rem;
    font-weight: 700;
}

/* Form */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 6px;
}

input[type="text"],
input[type="email"],
input[type="number"] {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #E0DFE5;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--primary);
    transition: border-color 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--secondary);
}

input::placeholder {
    color: #B0AEBB;
}

/* Amount buttons */
.amount-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

.amount-btn {
    padding: 10px;
    border: 2px solid #E0DFE5;
    border-radius: 8px;
    background: var(--white);
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.amount-btn:hover {
    border-color: var(--secondary);
}

.amount-btn.active {
    background: var(--secondary);
    border-color: var(--secondary);
    color: var(--primary);
}

/* Submit */
.submit-btn {
    width: 100%;
    padding: 14px;
    background: var(--secondary);
    color: var(--primary);
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.2s;
    font-family: inherit;
    margin-top: 8px;
}

.submit-btn:hover {
    opacity: 0.9;
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Privacy note */
.privacy-note {
    margin-top: 16px;
    font-size: 0.75rem;
    color: var(--gray-text);
    line-height: 1.5;
    text-align: center;
}

.privacy-note a {
    color: var(--teal);
}

/* Transfer section */
.success-icon {
    width: 64px;
    height: 64px;
    background: var(--green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 16px;
}

#transfer-section h2 {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.subtitle {
    text-align: center;
    color: var(--gray-text);
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.transfer-card {
    background: var(--gray-light);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.transfer-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #E0DFE5;
}

.transfer-row:last-child {
    border-bottom: none;
}

.transfer-row.highlight {
    background: var(--secondary);
    margin: 8px -20px;
    padding: 12px 20px;
    border-radius: 8px;
    border-bottom: none;
}

.transfer-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-text);
    min-width: 90px;
}

.transfer-row.highlight .transfer-label {
    color: var(--primary);
}

.transfer-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
    word-break: break-all;
    flex: 1;
    text-align: right;
}

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.2s;
    margin-left: 4px;
}

.copy-btn:hover {
    background: rgba(81, 77, 106, 0.1);
}

.important-note {
    background: #FFF9DB;
    border-left: 4px solid var(--secondary);
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 20px;
}

.thank-you {
    text-align: center;
    font-size: 0.95rem;
    color: var(--gray-text);
    margin-bottom: 20px;
}

.back-link {
    display: block;
    text-align: center;
    color: var(--teal);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
}

.back-link:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 520px) {
    body {
        padding: 12px;
    }

    .container {
        padding: 24px 20px;
    }

    .campaign-banner h1 {
        font-size: 1.15rem;
    }

    .amount-options {
        grid-template-columns: repeat(2, 1fr);
    }
}