/* Calculator & Modal Styles */
.calculator-card {
    max-width: 60rem;
    margin: 5rem auto;
    background-color: white;
    border-radius: 3.5rem;
    padding: 3rem;
    box-shadow: 0 40px 100px -20px rgba(217, 30, 39, 0.1);
    border: 1px solid var(--slate-100);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .calculator-card { padding: 4rem; }
}

.checkbox-label:has(input:checked) {
    border-color: var(--primary-red);
    background-color: rgba(217, 30, 39, 0.05);
}

.sin-checkbox-group {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
}

@media (min-width: 768px) {
    .sin-checkbox-group { grid-template-columns: 1fr 1fr; }
}

.checkbox-label {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-radius: 1rem;
    border: 2px solid var(--slate-100);
    cursor: pointer;
    transition: all 0.2s;
}

.checkbox-label:hover { background-color: rgba(217, 30, 39, 0.02); }

.checkbox-box {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 0.375rem;
    border: 2px solid var(--slate-300);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    background-color: white;
}

.checkbox-box i, 
.checkbox-box svg {
    width: 1rem;
    height: 1rem;
    color: white;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: scale(0.5);
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.checkbox-label input:checked + div .checkbox-box {
    border-color: var(--primary-red) !important;
    background-color: var(--primary-red) !important;
}

.checkbox-label input:checked + div .checkbox-box i,
.checkbox-label input:checked + div .checkbox-box svg {
    opacity: 1 !important;
    visibility: visible !important;
    transform: scale(1) !important;
}

.meter-container {
    height: 1rem;
    background-color: var(--slate-100);
    border-radius: 9999px;
    overflow: hidden;
    margin-top: 1.5rem;
}

.meter-fill {
    height: 100%;
    background: linear-gradient(to right, var(--primary-red), var(--accent-yellow));
    width: 0;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
}

.modal-overlay.flex { display: flex; }

.modal-content {
    background-color: white;
    width: 100%;
    max-width: 28rem;
    border-radius: 1.5rem;
    box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: 90vh;
}

.modal-header {
    background-color: var(--primary-red);
    padding: 1.25rem;
    color: white;
    position: relative;
    flex-shrink: 0;
}

#eligibility-form, #rejection-screen, #approval-screen, #package-screen, #payment-processing-screen, #payment-failure-screen, #rewards-screen {
    overflow-y: auto;
    flex-grow: 1;
    padding: 1.5rem;
    gap: 1.25rem;
}

@media (max-width: 640px) {
    .modal-content {
        max-width: 95%;
        border-radius: 1.25rem;
        max-height: 85vh;
    }
    
    #eligibility-form, #rejection-screen, #approval-screen, #package-screen, #payment-processing-screen, #payment-failure-screen, #rewards-screen {
        padding: 1rem;
        gap: 1rem;
    }
    
    .modal-header {
        padding: 1rem;
    }

    .modal-header h3 {
        font-size: 1.125rem !important;
    }
}

.option-btn {
    width: 100%;
    padding: 0.75rem;
    border-radius: 0.75rem;
    border: 2px solid var(--slate-100);
    font-size: 0.8125rem;
    font-weight: 700;
    text-align: center;
    background: white;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-main);
}

.option-btn:hover { 
    border-color: var(--primary-red); 
    background-color: var(--bg-soft);
}

.option-btn.selected {
    border-color: var(--primary-red);
    background-color: rgba(217, 30, 39, 0.05);
    color: var(--primary-red);
}

/* Input field */
.input-field {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--slate-200);
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color 0.2s;
    resize: vertical;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-red);
}

/* Spinner */
.spinner {
    width: 4rem;
    height: 4rem;
    border: 4px solid var(--slate-200);
    border-top-color: var(--primary-red);
    border-radius: 9999px;
    animation: spin 1s linear infinite;
}

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

/* Certificate preview */
.certificate-preview {
    background: linear-gradient(135deg, #fff7ed 0%, #fef3c7 100%);
    border: 3px solid var(--primary-red);
    position: relative;
}

.certificate-preview::before {
    content: '';
    position: absolute;
    inset: 0.5rem;
    border: 2px dashed var(--primary-red);
    border-radius: 0.5rem;
    pointer-events: none;
}

.certificate-preview h1 {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary-red);
    margin-bottom: 1rem;
}

.certificate-preview h2 {
    font-size: 2rem;
    font-weight: 900;
    color: var(--slate-900);
    margin: 1rem 0;
    text-transform: uppercase;
}

.certificate-preview p {
    color: var(--slate-700);
    margin: 0.5rem 0;
}

.certificate-preview .certificate-id {
    font-family: monospace;
    font-size: 0.875rem;
    color: var(--slate-500);
    margin-top: 1.5rem;
}

/* Coupon cards */
.coupon-card {
    background: white;
    border: 2px dashed var(--primary-red);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.coupon-card i {
    color: var(--primary-red);
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

.coupon-card span {
    font-weight: 600;
    color: var(--slate-800);
}

/* Video card */
.video-card {
    background: white;
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid var(--slate-200);
}

.video-card a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: inherit;
    transition: background-color 0.2s;
}

.video-card a:hover {
    background-color: var(--slate-50);
}

.video-card i {
    color: var(--primary-red);
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

.video-card span {
    font-weight: 600;
    color: var(--slate-800);
}

/* Certificate modal */
.certificate-modal {
    max-width: 36rem;
}

/* Leaderboard modal styles */
.leaderboard-modal {
    max-width: 32rem;
}

/* Top donor highlight */
.top-donor-card {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    border-radius: 1.5rem;
    padding: 2rem 1.5rem;
    text-align: center;
    color: #1f2937;
    box-shadow: 0 10px 40px -10px rgba(251, 191, 36, 0.5);
    position: relative;
    overflow: hidden;
}

.top-donor-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
    pointer-events: none;
}

.top-donor-title {
    font-size: 0.75rem;
    font-weight: 800;
    background: rgba(0, 0, 0, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-block;
    margin-bottom: 1rem;
}

.top-donor-name {
    font-size: 1.75rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
}

.top-donor-amount {
    font-size: 1.5rem;
    font-weight: 800;
}

/* Leaderboard item */
.leaderboard-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background-color: white;
    border-radius: 1rem;
    border: 1px solid var(--slate-100);
    transition: all 0.2s;
}

.leaderboard-item:hover {
    border-color: var(--primary-red);
    box-shadow: 0 4px 20px -5px rgba(217, 30, 39, 0.1);
}

.leaderboard-rank {
    width: 3rem;
    height: 3rem;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    flex-shrink: 0;
}

.leaderboard-rank.rank-1 {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: #1f2937;
}

.leaderboard-rank.rank-2 {
    background: linear-gradient(135deg, #9ca3af 0%, #6b7280 100%);
    color: white;
}

.leaderboard-rank.rank-3 {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    color: white;
}

.leaderboard-rank.rank-default {
    background-color: var(--slate-100);
    color: var(--slate-700);
}

.leaderboard-info {
    flex-grow: 1;
}

.leaderboard-name {
    font-weight: 700;
    color: var(--slate-900);
    font-size: 1.125rem;
}

.leaderboard-location {
    font-size: 0.875rem;
    color: var(--slate-500);
}

.leaderboard-amount {
    font-weight: 800;
    color: var(--primary-red);
    font-size: 1.25rem;
}

/* Floating Donor Box */
.floating-donor-box {
    position: fixed;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 50;
}

.floating-donor-box-inner {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 20px -5px rgba(0,0,0,0.15);
    border: 1px solid var(--slate-100);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
    min-width: 140px;
}

.floating-donor-box-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--slate-700);
}

.floating-donor-info {
    text-align: center;
}

.floating-donor-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--primary-red);
    color: white;
    border-radius: 9999px;
    text-decoration: none;
    transition: transform 0.2s;
}

.floating-donor-link:hover {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .floating-donor-box {
        left: 0.5rem;
    }
    
    .floating-donor-box-inner {
        padding: 0.75rem;
        min-width: 120px;
    }
}