/* ============================================
   CSS Variables / Design Tokens
   ============================================ */
:root {
    --df-primary-color: #0b9bdc;
    --df-accent-color: #F5A623;
    --df-success-color: #10B981;
    --df-error-color: #EF4444;
    --df-card-radius: 12px;
    --df-spacing-xs: 0.375rem;
    --df-spacing-sm: 0.5rem;
    --df-spacing-md: 0.75rem;
    --df-spacing-lg: 1rem;
    --df-spacing-xl: 1.25rem;
    --df-spacing-2xl: 1.5rem;
    --df-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --df-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --df-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --df-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --df-text-primary: #111827;
    --df-text-secondary: #6B7280;
    --df-text-tertiary: #9CA3AF;
    --df-bg-light: #F9FAFB;
    --df-bg-white: #FFFFFF;
    --df-border-light: #E5E7EB;
    --df-border-medium: #D1D5DB;
    --df-card-max-width: 880px;
}

/* ============================================
   Base Reset
   ============================================ */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #01203e;
    background-image: url('https://s3.amazonaws.com/mobilecause-avatar-production/shared_img/shared_imgs/288959/original/collage_edited.png?1569609024');
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    background-attachment: fixed;
    color: var(--df-text-primary);
    line-height: 1.5;
}

/* ============================================
   Layout & Container
   ============================================ */
.donation-form-wrapper {
    width: 100%;
    min-height: 100vh;
    padding: var(--df-spacing-2xl) 0;
    background: rgba(1, 32, 62, 0.5);
}

.donation-form-stripe {
    width: 100%;
    max-width: var(--df-card-max-width);
    margin: 0 auto;
    padding: var(--df-spacing-md);
}

.donation-card {
    background: var(--df-bg-white);
    border-radius: var(--df-card-radius);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3), 0 10px 20px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.donation-card:hover {
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4), 0 15px 30px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

/* ============================================
   Header
   ============================================ */
.donation-header {
    background: transparent;
    padding: var(--df-spacing-2xl) var(--df-spacing-xl);
    text-align: center;
    position: relative;
}

.header-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--df-spacing-md);
}

.logo-container {
    margin-bottom: 0;
    display: flex;
    justify-content: center;
}

.logo-image {
    width: auto;
    height: 100px;
    max-height: 100px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.header-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--df-text-primary);
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    letter-spacing: -0.02em;
}

.header-tagline {
    font-size: 1rem;
    color: var(--df-text-secondary);
    margin: 0;
    font-weight: 500;
}

/* ============================================
   Card Body
   ============================================ */
.card-body {
    padding: var(--df-spacing-2xl) var(--df-spacing-xl);
}

/* ============================================
   Sections
   ============================================ */
.section {
    margin-bottom: var(--df-spacing-2xl);
}

.section:last-child {
    margin-bottom: 0;
}

.section-header-decorated {
    display: flex;
    align-items: center;
    gap: var(--df-spacing-sm);
    margin-bottom: var(--df-spacing-lg);
}

.section-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--df-border-medium), transparent);
}

.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--df-text-primary);
    margin: 0;
    letter-spacing: -0.01em;
    white-space: nowrap;
    padding: 0 var(--df-spacing-sm);
}

/* ============================================
   Preset Amount Cards
   ============================================ */
.preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--df-spacing-md);
    margin-bottom: var(--df-spacing-lg);
}

.preset-card {
    background: var(--df-bg-light);
    border: 2px solid var(--df-border-light);
    border-radius: 16px;
    padding: var(--df-spacing-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
}

.preset-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--df-shadow-lg);
    border-color: var(--df-primary-color);
}

.preset-card[data-selected="true"] {
    border-color: var(--df-primary-color);
    background: var(--df-primary-color);
    box-shadow: var(--df-shadow-lg);
}

.preset-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--df-spacing-xs);
    text-align: center;
    width: 100%;
}

.preset-card[data-selected="true"] .preset-content {
    color: white;
}

.preset-amount {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--df-text-primary);
    transition: color 0.3s;
}

.preset-card[data-selected="true"] .preset-amount {
    color: white;
}

.preset-popular {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--df-accent-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.5rem;
    background: rgba(245, 158, 11, 0.1);
    border-radius: 12px;
    transition: all 0.3s;
}

.preset-card[data-selected="true"] .preset-popular {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* ============================================
   Amount Input
   ============================================ */
.amount-input-wrapper {
    max-width: 400px;
    margin: 0 auto;
}

/* ============================================
   Frequency Pills
   ============================================ */
.frequency-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--df-spacing-md);
    justify-content: center;
}

.frequency-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--df-spacing-xs);
    padding: var(--df-spacing-md) var(--df-spacing-lg);
    background: var(--df-bg-light);
    border: 2px solid var(--df-border-light);
    border-radius: 9999px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--df-text-primary);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.frequency-pill:hover {
    background: white;
    border-color: var(--df-primary-color);
    transform: translateY(-2px);
    box-shadow: var(--df-shadow-md);
}

.frequency-pill[data-selected="true"] {
    background: var(--df-primary-color);
    border-color: var(--df-primary-color);
    color: white;
    box-shadow: var(--df-shadow-lg);
}

/* ============================================
   Form Grid & Fields
   ============================================ */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--df-spacing-lg);
    max-width: 600px;
    margin: 0 auto;
}

.form-field {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--df-spacing-xs);
}

.form-field-full {
    grid-column: 1 / -1;
}

.input-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--df-text-primary);
    margin-bottom: var(--df-spacing-xs);
}

.modern-input {
    padding: var(--df-spacing-md) var(--df-spacing-lg);
    border: 2px solid var(--df-border-light);
    border-radius: 12px;
    font-size: 1rem;
    color: var(--df-text-primary);
    background: white;
    transition: all 0.2s;
    font-family: inherit;
}

.modern-input:focus {
    outline: none;
    border-color: var(--df-primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.modern-input:invalid:not(:placeholder-shown) {
    border-color: var(--df-error-color);
}

.error-message {
    display: flex;
    align-items: center;
    gap: var(--df-spacing-xs);
    color: var(--df-error-color);
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: var(--df-spacing-xs);
}

.success-message {
    display: flex;
    align-items: center;
    gap: var(--df-spacing-xs);
    color: var(--df-success-color);
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: var(--df-spacing-xs);
}

/* ============================================
   Checkboxes
   ============================================ */
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--df-spacing-sm);
    cursor: pointer;
    font-size: 1rem;
    color: var(--df-text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--df-primary-color);
}

/* ============================================
   Tribute Panels
   ============================================ */
.tribute-panel {
    border: 2px solid var(--df-border-light);
    border-radius: 16px;
    padding: var(--df-spacing-lg);
    background: var(--df-bg-light);
}

.tribute-header {
    margin-bottom: 0;
}

.tribute-content {
    padding: var(--df-spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--df-spacing-md);
    background: white;
    border-radius: 12px;
    margin-top: var(--df-spacing-md);
}

.notification-fields {
    display: flex;
    flex-direction: column;
    gap: var(--df-spacing-md);
    padding: var(--df-spacing-md);
    background: var(--df-bg-light);
    border-radius: 12px;
    margin-top: var(--df-spacing-md);
}

/* ============================================
   Fee Coverage Panel
   ============================================ */
.fee-panel {
    background: var(--df-bg-light);
    border: 2px solid var(--df-border-light);
    border-radius: 16px;
    padding: var(--df-spacing-lg);
    transition: all 0.3s;
}

.fee-panel:hover {
    border-color: var(--df-primary-color);
    box-shadow: var(--df-shadow-md);
}

.fee-impact-message {
    margin-top: var(--df-spacing-md);
    padding: var(--df-spacing-md);
    border-radius: 12px;
    font-size: 0.9375rem;
    line-height: 1.5;
    transition: all 0.3s ease;
}

.fee-covered-message,
.fee-not-covered-message {
    background: #F9FAFB;
    border: 1px solid #E5E7EB;
    color: #374151;
    margin: 0;
    padding: var(--df-spacing-md);
    border-radius: 8px;
    font-size: 0.9375rem;
}

.fee-covered-message strong,
.fee-not-covered-message strong {
    font-weight: 700;
}

/* ============================================
   Summary Card
   ============================================ */
.summary-card {
    background: var(--df-bg-light);
    border: 2px solid var(--df-border-light);
    border-radius: 20px;
    padding: var(--df-spacing-xl);
    box-shadow: var(--df-shadow-md);
}

.summary-header {
    display: flex;
    align-items: center;
    gap: var(--df-spacing-sm);
    margin-bottom: var(--df-spacing-lg);
    padding-bottom: var(--df-spacing-md);
    border-bottom: 2px solid var(--df-border-light);
}

.summary-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--df-text-primary);
    margin: 0;
}

.summary-content {
    display: flex;
    flex-direction: column;
    gap: var(--df-spacing-md);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.summary-label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--df-text-secondary);
}

.summary-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--df-text-primary);
}

.summary-row-fee {
    font-size: 0.875rem;
}

.summary-divider {
    height: 2px;
    background: var(--df-border-medium);
    margin: var(--df-spacing-sm) 0;
}

.summary-row-total .summary-label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--df-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.summary-value-total {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--df-primary-color);
}

/* ============================================
   Submit Button
   ============================================ */
.submit-section {
    margin-top: var(--df-spacing-2xl);
}

.submit-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--df-spacing-md);
    padding: var(--df-spacing-lg) var(--df-spacing-xl);
    background: var(--df-primary-color);
    border: none;
    border-radius: 16px;
    color: white;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    box-shadow: var(--df-shadow-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.submit-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--df-shadow-xl);
}

.submit-button:active:not(:disabled) {
    transform: translateY(0);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    display: flex;
    align-items: center;
    gap: var(--df-spacing-md);
    padding: var(--df-spacing-lg);
    border-radius: 12px;
    margin-top: var(--df-spacing-lg);
    font-weight: 500;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid var(--df-error-color);
    color: var(--df-error-color);
}

/* ============================================
   Security & Trust
   ============================================ */
.security-section {
    margin-top: var(--df-spacing-xl);
    padding: var(--df-spacing-lg);
    background: var(--df-bg-light);
    border-radius: 12px;
    text-align: center;
}

.security-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--df-spacing-md);
    margin-bottom: var(--df-spacing-sm);
}

.security-badge {
    display: flex;
    align-items: center;
    gap: var(--df-spacing-xs);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--df-text-secondary);
}

.payment-methods {
    display: flex;
    flex-wrap: wrap;
    gap: var(--df-spacing-xs);
    justify-content: center;
}

.payment-brand {
    padding: 0.25rem 0.5rem;
    background: white;
    border: 1px solid var(--df-border-light);
    border-radius: 6px;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--df-text-secondary);
}

/* ============================================
   Payment Element
   ============================================ */
.payment-section {
    position: relative;
}

.payment-element-wrapper {
    position: relative;
    min-height: 160px;
    padding: var(--df-spacing-2xl);
    border-radius: 12px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: var(--df-bg-white);
    box-shadow: var(--df-shadow-sm);
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.payment-element-wrapper[data-state="ready"] {
    border-color: rgba(14, 165, 233, 0.35);
    box-shadow: var(--df-shadow-md);
}

.payment-element-wrapper[data-state="error"] {
    border-color: rgba(239, 68, 68, 0.4);
    box-shadow: 0 0 0 1px rgba(239, 68, 68, 0.12);
}

.payment-element {
    opacity: 0;
    transition: opacity 180ms ease;
}

.payment-element-wrapper[data-state="ready"] .payment-element {
    opacity: 1;
}

.payment-element-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--df-spacing-md);
    padding: var(--df-spacing-xl);
    font-size: 0.95rem;
    color: var(--df-text-secondary);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.05), rgba(14, 165, 233, 0));
    border-radius: inherit;
}

.payment-element-wrapper[data-state="ready"] .payment-element-loader,
.payment-element-wrapper[data-state="error"] .payment-element-loader {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-spinner {
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 50%;
    border: 3px solid rgba(14, 165, 233, 0.2);
    border-top-color: var(--df-primary-color);
    animation: loader-spin 1s linear infinite;
}

.loader-text {
    font-weight: 500;
}

#paymentElementError {
    margin-top: var(--df-spacing-md);
    display: flex;
    align-items: center;
    gap: var(--df-spacing-sm);
}

#paymentElementError::before {
    content: "!";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.35rem;
    height: 1.35rem;
    border-radius: 50%;
    background: rgba(239, 68, 68, 0.15);
    color: var(--df-error-color);
    font-weight: 700;
    font-size: 0.8rem;
}

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

.secure-text {
    font-size: 0.875rem;
    color: var(--df-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--df-spacing-xs);
}

.secure-icon {
    font-size: 1rem;
}

/* ============================================
   Reassurance & Footer
   ============================================ */
.reassurance-text {
    text-align: center;
    color: var(--df-text-secondary);
    font-size: 0.875rem;
    margin: var(--df-spacing-lg) 0 0 0;
    line-height: 1.6;
}

.form-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--df-spacing-md);
    margin-top: var(--df-spacing-xl);
    padding-top: var(--df-spacing-lg);
    border-top: 1px solid var(--df-border-light);
    font-size: 0.75rem;
    color: var(--df-text-tertiary);
}

.form-footer a {
    color: var(--df-primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.form-footer a:hover {
    color: var(--df-accent-color);
    text-decoration: underline;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .donation-form-stripe {
        padding: var(--df-spacing-md);
    }

    .card-body {
        padding: var(--df-spacing-lg);
    }

    .header-title {
        font-size: 1.5rem;
    }

    .header-tagline {
        font-size: 0.875rem;
    }

    .section-title {
        font-size: 1rem;
    }

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

    .frequency-pills {
        flex-direction: column;
    }

    .frequency-pill {
        width: 100%;
        justify-content: center;
    }

    .summary-value-total {
        font-size: 1.25rem;
    }

    .submit-button {
        font-size: 0.875rem;
        padding: var(--df-spacing-md) var(--df-spacing-lg);
    }
}

@media (max-width: 480px) {
    .preset-grid {
        grid-template-columns: 1fr;
    }

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