/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Proxima Nova', 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: #1a1a1a;
    background: 
        radial-gradient(circle at 25% 25%, rgba(65, 193, 239, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(0, 148, 131, 0.05) 0%, transparent 50%),
        linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    letter-spacing: -0.01em;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../assets/images/denver-streets.png');
    background-size: contain;
    background-position: top;
    background-repeat: repeat;
    opacity: 0.025;
    pointer-events: none;
    z-index: -1;
}

/* Header styles */
header {
    background: linear-gradient(135deg, #002F87 0%, #003AA1 100%);
    color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(0, 47, 135, 0.15);
    backdrop-filter: blur(10px);
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 2rem;
    max-width: 1800px;
    margin: 0 auto;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    max-width: 10vh;
    /* width: 150px; */
    height: auto;
    margin-right: 1rem;
    border-radius: 8px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.support-button {
    background-color: #41C1EF;
    color: white;
    padding: 14px 28px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 20px rgba(65, 193, 239, 0.3);
}

.support-button:hover {
    background-color: #2AA9D6;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(65, 193, 239, 0.4);
}

/* Navigation dropdown */
.nav-dropdown {
    background-color: #003A9D; /* Slightly lighter than RTD Blue */
    border-top: 1px solid #41C1EF;
}

.nav-dropdown-content {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 1rem 0;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #41C1EF;
}

/* Main content */
main {
    max-width: 1800px;
    margin: 0 auto;
    padding: 2rem;
}

/* Slogan */
.opener h1 {
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 800;
    color: #002F87;
    text-align: center;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.teaser h1 {
    font-size: clamp(2.25rem, 5.5vw, 2.75rem);
    font-weight: 800;
    color: #A50B26;
    text-align: center;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.page-title-section {
    text-align: center;
}

.page-title-section h1 {
    font-size: clamp(1.75rem, 4vw, 2rem);
    font-weight: 700;
    color: #002F87;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.page-title-section p {
    color: #002F87;
}

/* Section subtitle styling */
.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    font-weight: 400;
    margin-top: 0.5rem;
    line-height: 1.5;
    text-align: center;
}

/* Hero section */
.hero-section {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin: 0 auto;
    margin-bottom: 3rem;
    align-items: center;
    max-width: 1200px;
}

.hero-image {
    max-width: 100%;
    max-height: 100%;
    min-height: 300px;
    object-fit: cover;
    object-position: 50% 25%;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;

}

.hero-content h1 {
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 800;
    color: #002F87;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.hero-content p {
    font-size: clamp(1.1rem, 2.2vw, 1.2rem);
    color: #444;
    line-height: 1.8;
    margin-bottom: 1.2rem;
}

/* Features section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
    margin-bottom: 3rem;
}

.feature-box {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 1.5rem 1.5rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-top: 4px solid;
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.feature-box:nth-child(1) {
    border-top-color: #CE0E2D; /* RTD Red */
}

.feature-box:nth-child(2) {
    border-top-color: #41C1EF; /* RTD Mid Blue */
}

.feature-box:nth-child(3) {
    border-top-color: #F6871F; /* RTD Orange */
}

.feature-box:nth-child(4) {
    border-top-color: #009483; /* RTD Teal */
}

.feature-box:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

.feature-box h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #002F87;
    margin-bottom: 1.2rem;
    letter-spacing: -0.02em;
}

.feature-box p {
    color: #555;
    line-height: 1.7;
    font-size: 1rem;
}

/* Donate section */
.donate-section {
    background: linear-gradient(135deg, #002F87 0%, #003AA1 100%);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin: 0 auto;
    margin-top: 0.5rem;
    margin-bottom: 3rem;
    text-align: center;
    max-width: 800px;
}

.donate-section h2 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.donate-section p {
    font-size: 1.1rem;
    color: #e9ecef;
    margin-bottom: 2rem;
}

.donate-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 1rem;
    margin-top: 2rem;
}

.donate-button:nth-child(1),
.donate-button:nth-child(2),
.donate-button:nth-child(3){
    grid-column: span 4;
}

.donate-button:nth-child(8) {
    grid-column: span 4;
    grid-row: span 2;
}

.donate-button {
    color: white;
    padding: clamp(8px, 2.5vw, 15px) clamp(12px, 3vw, 20px);
    border: none;
    border-radius: 12px;
    font-size: clamp(0.85rem, 2.2vw, 1.1rem);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 50px;
}

.donate-button:nth-child(1) {
    background-color: #CE0E2D; /* RTD Red - C Line */
    box-shadow: 0 4px 20px rgba(206, 14, 45, 0.3);
}

.donate-button:nth-child(1):hover {
    background-color: #A50B26;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(206, 14, 45, 0.4);
}

.donate-button:nth-child(2) {
    background-color: #F6871F; /* RTD Orange - E, H, W Lines */
    box-shadow: 0 4px 20px rgba(246, 135, 31, 0.3);
}

.donate-button:nth-child(2):hover {
    background-color: #D6731A;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(246, 135, 31, 0.4);
}

.donate-button:nth-child(3) {
    background-color: #FDBA2F; /* RTD Yellow - G Line */
    color: #1a1a1a;
    box-shadow: 0 4px 20px rgba(253, 186, 47, 0.3);
}

.donate-button:nth-child(3):hover {
    background-color: #E5A71F;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(253, 186, 47, 0.4);
}

.donate-button:nth-child(4) {
    background-color: #A50B26; /* Dark Red */
    box-shadow: 0 4px 20px rgba(165, 11, 38, 0.3);
}

.donate-button:nth-child(4):hover {
    background-color: #850920;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(165, 11, 38, 0.4);
}

.donate-button:nth-child(5) {
    background-color: #A50B26; /* Dark Red */
    box-shadow: 0 4px 20px rgba(165, 11, 38, 0.3);
}

.donate-button:nth-child(5):hover {
    background-color: #850920;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(165, 11, 38, 0.4);
}

.donate-button:nth-child(6) {
    background-color: #A50B26; /* Dark Red */
    box-shadow: 0 4px 20px rgba(165, 11, 38, 0.3);
}

.donate-button:nth-child(6):hover {
    background-color: #850920;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(165, 11, 38, 0.4);
}

.donate-button:nth-child(7) {
    background-color: #A50B26; /* Dark Red */
    box-shadow: 0 4px 20px rgba(165, 11, 38, 0.3);
}

.donate-button:nth-child(7):hover {
    background-color: #850920;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(165, 11, 38, 0.4);
}

.donate-button:nth-child(8) {
    background-color: #009483; /* RTD Teal */
    box-shadow: 0 4px 20px rgba(0, 148, 131, 0.3);
}

.donate-button:nth-child(8):hover {
    background-color: #007A6D;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 148, 131, 0.4);
}

.donate-button:focus {
    outline: 3px solid #FDBA2F;
    outline-offset: 2px;
}

/* Contact section */
.contact-section {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin: 0 auto;
    margin-top: 0.5rem;
    margin-bottom: 3rem;
    text-align: center;
    max-width: 1000px;
    align-items: center;
}

.contact-section h2 {
    color: #002F87;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.contact-section p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.1rem;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.contact-method {
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #41C1EF;
}

.contact-method h3 {
    color: #002F87;
    margin-bottom: 0.5rem;
}

.contact-method a {
    color: #CE0E2D;
    text-decoration: none;
    font-weight: bold;
}

.contact-method a:hover {
    text-decoration: underline;
}

/* Form section */
.form-section {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin: 0 auto;
    max-width: 1000px;
}

.form-section h2 {
    color: #002F87;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    text-align: center;
}

.form-section p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    text-align: center;
}

.signup-form {
    display: grid;
    gap: 1rem;
}

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

.form-group label {
    font-weight: bold;
    margin-bottom: 0.25rem;
    color: #002F87;
}

.form-group input {
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #41C1EF;
}

.form-group textarea {
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s ease;
}

.character-counter {
    text-align: right;
    font-size: 0.9rem;
    color: #666;
    margin-top: 4px;
}

.character-counter.warning {
    color: #F6871F;
}

.character-counter.danger {
    color: #CE0E2D;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 0 0 1rem 0;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.checkbox-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #41C1EF;
}

.checkbox-item label {
    font-weight: normal;
    margin: 0;
    cursor: pointer;
}

/* Endorsement top checkbox - special styling for first endorsement checkbox */
.endorsement-top {
    background: linear-gradient(135deg, rgba(65, 193, 239, 0.05) 0%, rgba(0, 148, 131, 0.05) 100%);
    border: 2px solid rgba(65, 193, 239, 0.2);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 0.75rem;
}

.endorsement-top .checkbox-item {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    column-gap: 0.75rem;
    row-gap: 0;
    align-items: end;
}

.endorsement-top .checkbox-item input[type="checkbox"] {
    grid-column: 1;
    grid-row: 1;
    flex-shrink: 0;
    padding-bottom: 0;
    margin-top: 0.2rem;
}

.endorsement-top .checkbox-item label {
    grid-column: 1 / -1;
    grid-row: 1 / -1;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: 0.25rem;
    padding-left: calc(18px + 0.75rem);
}

.endorsement-main-text {
    grid-column: 1 / -1;
    grid-row: 1;
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1.4;
    color: #002F87;
    padding-bottom: 0;
}

.consent-text {
    grid-column: 1 / -1;
    grid-row: 2;
    font-weight: 400;
    font-size: 0.85rem;
    color: #666;
    line-height: 1.5;
    font-style: italic;
    margin-top: 0.25rem;
}

/* Endorsement details styles */
.endorsement-details {
    background: linear-gradient(135deg, rgba(65, 193, 239, 0.02) 0%, rgba(0, 148, 131, 0.02) 100%);
    border: 1px solid rgba(65, 193, 239, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1rem;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* File upload styles */
.file-upload-container {
    position: relative;
    display: inline-block;
    width: 100%;
}

.file-upload-container input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-upload-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed #41C1EF;
    border-radius: 8px;
    padding: 2rem;
    background: rgba(65, 193, 239, 0.03);
    transition: all 0.3s ease;
    cursor: pointer;
}

.file-upload-display:hover {
    border-color: #009483;
    background: rgba(0, 148, 131, 0.05);
}

.file-upload-text {
    font-weight: 600;
    color: #41C1EF;
    margin-bottom: 0.5rem;
}

.file-upload-note {
    font-size: 0.9rem;
    color: #666;
}

.file-upload-container.has-file .file-upload-display {
    border-color: #009483;
    background: rgba(0, 148, 131, 0.05);
}

.file-upload-container.has-file .file-upload-text {
    color: #009483;
}

/* Form message styles */
.form-message {
    margin: 1.5rem 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    animation: messageSlideIn 0.3s ease-out;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-message.success-message {
    background: linear-gradient(135deg, rgba(0, 148, 131, 0.1) 0%, rgba(65, 193, 239, 0.05) 100%);
    border: 1px solid rgba(0, 148, 131, 0.2);
}

.form-message.error-message {
    background: linear-gradient(135deg, rgba(206, 14, 45, 0.1) 0%, rgba(206, 14, 45, 0.05) 100%);
    border: 1px solid rgba(206, 14, 45, 0.2);
}

.message-content {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    gap: 0.75rem;
}

.message-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.message-text {
    flex: 1;
    font-weight: 500;
    line-height: 1.4;
}

.success-message .message-text {
    color: #006B5A;
}

.error-message .message-text {
    color: #A50B2E;
}

.message-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.message-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #333;
}

.submit-button {
    background-color: #41C1EF;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    justify-self: center;
    max-width: 200px;
    box-shadow: 0 4px 20px rgba(65, 193, 239, 0.3);
}

.submit-button:hover {
    background-color: #2AA9D6;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(65, 193, 239, 0.4);
}

.submit-button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
}

/* Footer */
footer {
    background-color: #002F87;
    color: white;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-legal {
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-legal p {
    margin-bottom: 0.5rem;
}

/* Hamburger Menu Button (hidden on desktop) */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 2rem;
    aspect-ratio: 1 / 1;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.1rem;
    z-index: 1001;
}

.hamburger span {
    width: 100%;
    height: 3px;
    background: #FFFFFF;
    border-radius: 1px;
    transition: all 0.3s ease;
    display: block;
    position: relative;
    flex-shrink: 0;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(0.35rem, 0.35rem);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(0.35rem, -0.35rem);
}

/* Mobile styles have been moved to mobile.css - always load that file after this one */

/* Accessibility improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for accessibility */
.support-button:focus,
.nav-menu a:focus {
    outline: 3px solid #FDBA2F;
    outline-offset: 2px;
}

.submit-button:focus,
input:focus {
    outline: 3px solid #FDBA2F;
    outline-offset: 2px;
}

/* Form validation styles */
.form-group input:invalid {
    border-color: #CE0E2D;
}

.form-group input:valid {
    border-color: #009483;
}

/* Hero content styling */
.hero-intro {
    font-weight: 700;
    font-size: clamp(1.15rem, 2.3vw, 1.25rem);
    color: #2c2c2c;
}

/* Popup Modal Styles */
.popup-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 2000;
    animation: fadeIn 0.3s ease-in-out;
}

.popup-overlay.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.popup-content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s ease-out;
    margin: 1rem;
}

.popup-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 1.2rem;
    color: #666;
    transition: all 0.3s ease;
    z-index: 10;
}

.popup-close:hover {
    background: rgba(0, 0, 0, 0.2);
    color: #CE0E2D;
    transform: scale(1.1);
}

.popup-donate-section {
    background: linear-gradient(135deg, #002F87 0%, #003AA1 100%);
    padding: 2.5rem 2rem 2rem 2rem;
    border-radius: 16px;
    text-align: center;
    max-width: 500px;
}

.popup-donate-section h2 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.8rem;
    font-weight: 700;
}

.popup-donate-section p {
    font-size: 1.1rem;
    color: #e9ecef;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.popup-donate-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.popup-donate-button {
    color: white;
    padding: 12px 16px;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 48px;
}

.popup-donate-button:nth-child(1) {
    background-color: #CE0E2D; /* RTD Red - C Line */
    box-shadow: 0 3px 15px rgba(206, 14, 45, 0.3);
}

.popup-donate-button:nth-child(1):hover {
    background-color: #A50B26;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(206, 14, 45, 0.4);
}

.popup-donate-button:nth-child(2) {
    background-color: #F6871F; /* RTD Orange - E, H, W Lines */
    box-shadow: 0 3px 15px rgba(246, 135, 31, 0.3);
}

.popup-donate-button:nth-child(2):hover {
    background-color: #D6731A;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(246, 135, 31, 0.4);
}

.popup-donate-button:nth-child(3) {
    background-color: #FDBA2F; /* RTD Yellow - G Line */
    color: #1a1a1a;
    box-shadow: 0 3px 15px rgba(253, 186, 47, 0.3);
}

.popup-donate-button:nth-child(3):hover {
    background-color: #E5A71F;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(253, 186, 47, 0.4);
}

.popup-donate-button:nth-child(4) {
    background-color: #A50B26; /* Dark Red */
    box-shadow: 0 3px 15px rgba(165, 11, 38, 0.3);
}

.popup-donate-button:nth-child(4):hover {
    background-color: #850920;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(165, 11, 38, 0.4);
}

.popup-donate-button:nth-child(5) {
    background-color: #A50B26; /* Dark Red */
    box-shadow: 0 3px 15px rgba(165, 11, 38, 0.3);
}

.popup-donate-button:nth-child(5):hover {
    background-color: #850920;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(165, 11, 38, 0.4);
}

.popup-donate-button:nth-child(6) {
    background-color: #A50B26; /* Dark Red */
    box-shadow: 0 3px 15px rgba(165, 11, 38, 0.3);
}

.popup-donate-button:nth-child(6):hover {
    background-color: #850920;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(165, 11, 38, 0.4);
}

.popup-donate-button:nth-child(7) {
    background-color: #009483; /* RTD Teal */
    box-shadow: 0 3px 15px rgba(0, 148, 131, 0.3);
}

.popup-donate-button:nth-child(7):hover {
    background-color: #007A6D;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 148, 131, 0.4);
}

.popup-donate-button:focus {
    outline: 3px solid #FDBA2F;
    outline-offset: 2px;
}

.popup-donate-button.large {
    grid-column: span 2;
    font-size: 1.1rem;
    padding: 16px 20px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}