/* public/style.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
    --primary-color: #28a745; /* Green accent */
    --primary-hover-color: #218838;
    --light-gray: #f6f9fc;
    --dark-gray: #425466;
    --text-color: #333;
    --border-color: #e6ebf1;
    --error-color: #df1b41;
    --success-color: #00a35c;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--light-gray);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.payment-container {
    width: 100%;
    max-width: 480px;
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(50, 50, 93, 0.11), 0 1px 3px rgba(0, 0, 0, 0.08);
}

h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark-gray);
    text-align: center;
}

p {
    font-size: 16px;
    color: #6b7c93;
    margin-bottom: 24px;
    text-align: center;
}

.subtitle {
    text-align: center;
    margin-bottom: 24px;
    font-size: 14px;
    color: #6b7c93;
}

.subtitle .link {
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
}

.subtitle .separator {
    margin: 0 8px;
}

#payment-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: flex;
    flex-direction: column;
}

label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--dark-gray);
}

.input-group {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: box-shadow 0.15s ease;
}

.input-group:focus-within {
    box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.25);
    border-color: var(--primary-color);
}

.input-group span {
    padding: 12px;
    font-size: 16px;
    color: #8898aa;
    background-color: var(--light-gray);
    border-right: 1px solid var(--border-color);
}

#amount-input {
    flex-grow: 1;
    padding: 12px;
    font-size: 16px;
    border: none;
    outline: none;
    border-radius: 0 6px 6px 0;
    background: transparent;
}

#card-element {
    padding: 14px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

#submit-button {
    background-color: var(--primary-color);
    color: white;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    padding: 12px;
    cursor: pointer;
    transition: background-color 0.15s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 48px;
    margin-top: 10px;
}

#submit-button:hover {
    background-color: var(--primary-hover-color);
}

#submit-button:disabled {
    background-color: #88d498;
    cursor: not-allowed;
}

#payment-message {
    margin-top: 12px;
    padding: 12px;
    border-radius: 6px;
    font-size: 14px;
    text-align: center;
}

#payment-message.success { background-color: #e6fff5; color: var(--success-color); }
#payment-message.error { background-color: #ffebee; color: var(--error-color); }
.hidden { display: none; }

.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    width: 20px;
    height: 20px;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* --- Modal Styles --- */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: #fff;
    margin: auto;
    padding: 20px 30px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    top: 10px;
    right: 20px;
    line-height: 1;
}

.modal-close:hover,
.modal-close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.modal-content h2 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--dark-gray);
    text-align: center;
}

.modal-content p {
    text-align: left;
    margin-bottom: 10px;
}
.modal-content ul {
    margin-bottom: 15px;
    margin-left: 20px;
}
.modal-content li {
    margin-bottom: 5px;
    color: #6b7c93;
}
.modal-content a {
    color: var(--primary-color);
    text-decoration: none;
}
.modal-content a:hover {
    text-decoration: underline;
}

.fee-calculator {
    margin-top: 20px;
    padding: 15px;
    background: var(--light-gray);
    border-radius: 6px;
    text-align: center; /* Center button */
}

.fee-calculator label {
    display: block;
    text-align: left;
}
.fee-calculator input {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-top: 5px;
    margin-bottom: 10px;
}

.modal-actions {
    display: flex;
    justify-content: center; /* Center buttons */
    gap: 10px;
    margin-top: 20px;
}

.modal-button {
    background-color: var(--primary-color);
    color: white;
    font-size: 15px;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    padding: 10px 20px;
    cursor: pointer;
    transition: background-color 0.15s ease;
}
.modal-button:hover {
    background-color: var(--primary-hover-color);
}
.modal-button.secondary {
    background-color: #6c757d;
}
.modal-button.secondary:hover {
    background-color: #5a6268;
}

/* Confirmation Modal Specifics */
.confirmation-modal-content {
    text-align: center;
}
.confirmation-modal-content p {
    text-align: center;
}
.confirmation-icon {
    margin-bottom: 15px;
}
.confirmation-icon svg {
    color: var(--success-color);
    stroke-width: 1.5;
}
.confirmation-amount {
    font-size: 28px;
    font-weight: 600;
    color: var(--dark-gray);
    margin: 10px 0 20px 0;
}