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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo i {
    margin-right: 0.5rem;
    color: #ff6b6b;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

.nav-links a:hover {
    opacity: 0.8;
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Payment Section */
.payment-section {
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
}

.payment-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

.payment-header {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.payment-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.payment-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.payment-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    padding: 2rem;
}

/* Amount Section */
.amount-section h2 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.amount-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.amount-btn {
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    font-weight: 600;
    color: #333;
}

.amount-btn:hover {
    border-color: #ff6b6b;
    background: #fff5f5;
    transform: translateY(-2px);
}

.amount-btn.selected {
    border-color: #ff6b6b;
    background: #ff6b6b;
    color: white;
}

.custom-amount-section input {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.custom-amount-section input:focus {
    outline: none;
    border-color: #ff6b6b;
}

/* Payment Methods */
.payment-methods {
    margin-top: 2rem;
}

.payment-methods h2 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.method-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid #e2e8f0;
    background: white;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    color: #666;
}

.tab-btn:hover {
    border-color: #ff6b6b;
    background: #fff5f5;
}

.tab-btn.active {
    border-color: #ff6b6b;
    background: #ff6b6b;
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* QR Bank Selection */
.qr-selection {
    margin-bottom: 2rem;
}

.qr-selection h3 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

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

.qr-bank {
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.qr-bank:hover {
    border-color: #ff6b6b;
    background: #fff5f5;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(255, 107, 107, 0.1);
}

.qr-bank.selected {
    border-color: #ff6b6b;
    background: #ff6b6b;
    color: white;
}

.qr-bank-logo {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.qr-bank-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: #666;
}

/* QR Bank Logos */
.optima-qr {
    color: #d4af37;
    text-shadow: 0 1px 2px rgba(212, 175, 55, 0.2);
}

.mbank-qr {
    color: #00a652;
    text-shadow: 0 1px 2px rgba(0, 166, 82, 0.2);
}

.demirbank-qr {
    color: #dc2626;
    text-shadow: 0 1px 2px rgba(220, 38, 38, 0.2);
}

.kicb-qr {
    color: #87ceeb;
    text-shadow: 0 1px 2px rgba(135, 206, 235, 0.2);
}

.aiylbank-qr {
    color: #1a1a1a;
    text-shadow: 0 1px 2px rgba(26, 26, 26, 0.2);
}

.bakai-qr {
    color: #d4af37;
    text-shadow: 0 1px 2px rgba(212, 175, 55, 0.2);
}

.rsb-qr {
    color: #1e40af;
    text-shadow: 0 1px 2px rgba(30, 64, 175, 0.2);
}

.ecom-qr {
    color: #6b46c1;
    text-shadow: 0 1px 2px rgba(107, 51, 161, 0.2);
}

/* QR Card Display */
.qr-code-container {
    margin-top: 2rem;
}

.qr-card-display {
    background: linear-gradient(135deg, #d4af37 0%, #f0c05a 50%, #ffd700 100%);
    background-image: 
        linear-gradient(135deg, #d4af37 0%, #f0c05a 50%, #ffd700 100%),
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 8px,
            rgba(255, 255, 255, 0.1) 8px,
            rgba(255, 255, 255, 0.05) 16px
        );
    border-radius: 15px;
    padding: 1.5rem;
    color: white;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
    min-height: 280px;
    transition: all 0.5s ease;
    animation: cardSlideIn 0.6s ease-out;
}

.qr-card-display:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.qr-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.qr-bank-logo-large {
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.qr-card-title {
    font-size: 1.1rem;
    font-weight: 500;
    opacity: 0.9;
}

.qr-card-body {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 1.5rem 0;
}

.qr-code-large {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.qr-pattern {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(7, 1fr);
    gap: 4px;
    width: 200px;
    height: 200px;
    animation: qrRotate 20s linear infinite;
}

.qr-square {
    width: 20px;
    height: 20px;
    background: #333;
    border-radius: 2px;
    position: relative;
    animation: qrPulse 2s ease-in-out infinite;
}

.qr-square:nth-child(odd) {
    background: #666;
}

.qr-square:nth-child(2n) {
    background: #999;
}

.qr-square:nth-child(3n) {
    background: #333;
    animation-delay: 0.2s;
}

.qr-square:nth-child(4n) {
    background: #666;
    animation-delay: 0.4s;
}

.qr-square:nth-child(5n) {
    background: #999;
    animation-delay: 0.6s;
}

.qr-square:nth-child(6n) {
    background: #333;
    animation-delay: 0.8s;
}

.qr-square:nth-child(7n) {
    background: #666;
    animation-delay: 1s;
}

.qr-square:nth-child(8n) {
    background: #999;
    animation-delay: 1.2s;
}

.qr-square:nth-child(9n) {
    background: #333;
    animation-delay: 1.4s;
}

.qr-square:nth-child(10n) {
    background: #666;
    animation-delay: 1.6s;
}

.qr-square:nth-child(11n) {
    background: #999;
    animation-delay: 1.8s;
}

.qr-square:nth-child(12n) {
    background: #333;
    animation-delay: 2s;
}

.qr-square:nth-child(13n) {
    background: #666;
    animation-delay: 2.2s;
}

.qr-square:nth-child(14n) {
    background: #999;
    animation-delay: 2.4s;
}

.qr-square:nth-child(15n) {
    background: #333;
    animation-delay: 2.6s;
}

.qr-square:nth-child(16n) {
    background: #666;
    animation-delay: 2.8s;
}

.qr-square:nth-child(17n) {
    background: #999;
    animation-delay: 3s;
}

.qr-square:nth-child(18n) {
    background: #333;
    animation-delay: 3.2s;
}

.qr-square:nth-child(19n) {
    background: #666;
    animation-delay: 3.4s;
}

.qr-square:nth-child(20n) {
    background: #999;
    animation-delay: 3.6s;
}

.qr-square:nth-child(21n) {
    background: #333;
    animation-delay: 4s;
}

.qr-square:nth-child(22n) {
    background: #666;
    animation-delay: 4.4s;
}

.qr-square:nth-child(23n) {
    background: #999;
    animation-delay: 4.8s;
}

.qr-square:nth-child(24n) {
    background: #333;
    animation-delay: 5.2s;
}

.qr-square:nth-child(25n) {
    background: #666;
    animation-delay: 5.6s;
}

.qr-square:nth-child(26n) {
    background: #999;
    animation-delay: 6s;
}

.qr-square:nth-child(27n) {
    background: #333;
    animation-delay: 6.4s;
}

.qr-square:nth-child(28n) {
    background: #666;
    animation-delay: 6.8s;
}

.qr-square:nth-child(29n) {
    background: #999;
    animation-delay: 7.2s;
}

.qr-square:nth-child(30n) {
    background: #333;
    animation-delay: 7.6s;
}

.qr-square:nth-child(31n) {
    background: #666;
    animation-delay: 8s;
}

.qr-square:nth-child(32n) {
    background: #999;
    animation-delay: 8.4s;
}

.qr-square:nth-child(33n) {
    background: #333;
    animation-delay: 8.8s;
}

.qr-square:nth-child(34n) {
    background: #666;
    animation-delay: 9.2s;
}

.qr-square:nth-child(35n) {
    background: #999;
    animation-delay: 9.6s;
}

.qr-square:nth-child(36n) {
    background: #333;
    animation-delay: 10s;
}

.qr-square:nth-child(37n) {
    background: #666;
    animation-delay: 10.4s;
}

.qr-square:nth-child(38n) {
    background: #999;
    animation-delay: 10.8s;
}

.qr-square:nth-child(39n) {
    background: #333;
    animation-delay: 11.2s;
}

.qr-square:nth-child(40n) {
    background: #666;
    animation-delay: 11.6s;
}

.qr-square:nth-child(41n) {
    background: #999;
    animation-delay: 12s;
}

.qr-square:nth-child(42n) {
    background: #333;
    animation-delay: 12.4s;
}

.qr-square:nth-child(43n) {
    background: #666;
    animation-delay: 12.8s;
}

.qr-square:nth-child(44n) {
    background: #999;
    animation-delay: 13.2s;
}

.qr-square:nth-child(45n) {
    background: #333;
    animation-delay: 13.6s;
}

.qr-square:nth-child(46n) {
    background: #666;
    animation-delay: 14s;
}

.qr-square:nth-child(47n) {
    background: #999;
    animation-delay: 14.4s;
}

.qr-square:nth-child(48n) {
    background: #333;
    animation-delay: 14.8s;
}

.qr-square:nth-child(49n) {
    background: #666;
    animation-delay: 15s;
}

.qr-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
}

.qr-card-number {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 2px;
    font-family: 'Courier New', monospace;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.qr-card-holder {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    opacity: 0.8;
}

/* QR Animations */
@keyframes qrRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes qrPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
}

@keyframes cardSlideIn {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* QR Card Animations */
.qr-card-display.animate-in {
    animation: cardSlideIn 0.6s ease-out, qrGlow 2s ease-in-out;
}

@keyframes qrGlow {
    0%, 100% {
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    }
    50% {
        box-shadow: 0 15px 35px rgba(255, 215, 0, 0.4);
    }
}

/* QR Section */
.qr-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* QR Bank Selector */
.qr-bank-selector {
    text-align: center;
    margin-bottom: 1rem;
}

.qr-bank-selector h3 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.qr-bank-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.qr-bank-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.2rem;
    border: 2px solid #e2e8f0;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    color: #64748b;
}

.qr-bank-btn:hover {
    border-color: #2563eb;
    color: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.qr-bank-btn.active {
    background: #2563eb;
    border-color: #2563eb;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.qr-bank-btn i {
    font-size: 1.1rem;
}

/* QR Codes Container */
.qr-codes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    position: relative;
    min-height: 300px;
}

.qr-code {
    text-align: center;
    padding: 1.5rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    background: white;
    transition: all 0.3s ease;
    opacity: 0;
    transform: scale(0.95);
    visibility: hidden;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-code.active {
    opacity: 1;
    transform: scale(1);
    visibility: visible;
    position: relative;
}

.qr-header {
    margin-bottom: 1rem;
}

.qr-header h4 {
    color: #2563eb;
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    border: 3px dashed #e2e8f0;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    background: #f8fafc;
    transition: all 0.3s ease;
}

.qr-code.active .qr-placeholder {
    border-color: #2563eb;
    background: #f0f9ff;
}

.qr-placeholder i {
    font-size: 3rem;
    color: #cbd5e0;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.qr-code.active .qr-placeholder i {
    color: #2563eb;
}

.qr-placeholder p {
    color: #718096;
    font-weight: 500;
    transition: color 0.3s ease;
}

.qr-code.active .qr-placeholder p {
    color: #1e40af;
}

.qr-instructions {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.qr-instructions h3 {
    color: #333;
    margin-bottom: 1rem;
}

.qr-instructions ol {
    padding-left: 1.5rem;
    color: #666;
}

.qr-instructions li {
    margin-bottom: 0.5rem;
}

/* Card Section */
.bank-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.bank-card {
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    background: #f8fafc;
    padding: 0.5rem;
}

.bank-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.card-display {
    padding: 1.2rem;
    color: white;
    border-radius: 12px;
    position: relative;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Real bank card colors */
.optima-card {
    background: linear-gradient(135deg, #d4af37 0%, #f0c05a 50%, #ffd700 100%);
    background-image: 
        linear-gradient(135deg, #d4af37 0%, #f0c05a 50%, #ffd700 100%),
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 8px,
            rgba(255, 255, 255, 0.1) 8px,
            rgba(255, 255, 255, 0.05) 16px
        );
}

.mbank-card {
    background: linear-gradient(135deg, #00a652 0%, #007844 50%, #004d25 100%);
    background-image: 
        linear-gradient(135deg, #00a652 0%, #007844 50%, #004d25 100%),
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
}

.demirbank-card {
    background: linear-gradient(135deg, #dc2626 0%, #ef4444 50%, #f87171 100%);
    background-image: 
        linear-gradient(135deg, #dc2626 0%, #ef4444 50%, #f87171 100%),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        );
}

.kicb-card {
    background: linear-gradient(135deg, #87ceeb 0%, #4682b4 50%, #1e40af 100%);
    background-image: 
        linear-gradient(135deg, #87ceeb 0%, #4682b4 50%, #1e40af 100%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 40%);
}

.aiylbank-card {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #000000 100%);
    background-image: 
        linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #000000 100%),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 12px,
            rgba(255, 255, 255, 0.02) 12px,
            rgba(255, 255, 255, 0.02) 24px
        );
}

.bakai-card {
    background: linear-gradient(135deg, #d4af37 0%, #f0c05a 50%, #ffd700 100%);
    background-image: 
        linear-gradient(135deg, #d4af37 0%, #f0c05a 50%, #ffd700 100%),
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.12) 0%, transparent 60%);
}

.rsb-card {
    background: linear-gradient(135deg, #1e40af 0%, #4682b4 50%, #87ceeb 100%);
    background-image: 
        linear-gradient(135deg, #1e40af 0%, #4682b4 50%, #87ceeb 100%),
        repeating-linear-gradient(
            60deg,
            transparent,
            transparent 6px,
            rgba(255, 255, 255, 0.05) 6px,
            rgba(255, 255, 255, 0.05) 12px
        );
}

.ecom-card {
    background: linear-gradient(135deg, #6b46c1 0%, #9333ea 50%, #a855f7 100%);
    background-image: 
        linear-gradient(135deg, #6b46c1 0%, #9333ea 50%, #a855f7 100%),
        radial-gradient(circle at 70% 70%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
}

/* Card info styling */
.card-info {
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    z-index: 2;
}

.bank-logo {
    margin-bottom: 1.5rem;
}

.bank-name {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    opacity: 0.9;
}

.card-number {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: auto;
    font-family: 'Courier New', monospace;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-top: 1rem;
}

.card-holder {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    opacity: 0.8;
}

.card-expiry {
    font-size: 0.7rem;
    font-weight: 400;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    opacity: 0.7;
}

/* Payment system logos */
.visa-logo {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.mastercard-logo {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.elkart-logo {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    font-size: 0.6rem;
    font-weight: 700;
    color: #87ceeb;
    text-shadow: 0 1px 2px rgba(135, 206, 235, 0.3);
    opacity: 0.9;
}

.maestro-logo {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.unionpay-logo {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    font-size: 0.6rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

/* Additional payment system logos */
.obank-logo {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    font-size: 0.6rem;
    font-weight: 700;
    color: #000000;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
    opacity: 0.9;
}

.kompanion-logo {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    font-size: 0.6rem;
    font-weight: 700;
    color: #ffd700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

/* Card hover effects */
.bank-card:hover .card-display {
    transform: scale(1.02);
    transition: transform 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* Card selection effect */
.bank-card.selected .card-display {
    box-shadow: 0 0 25px rgba(255, 107, 107, 0.4);
    border: 2px solid #ff6b6b;
}

/* Responsive design for cards */
@media (max-width: 768px) {
    .bank-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .card-display {
        min-height: 180px;
        padding: 1rem;
    }
    
    .card-number {
        font-size: 1rem;
        letter-spacing: 1.5px;
    }
    
    .bank-name {
        font-size: 0.9rem;
    }
    
    .card-holder {
        font-size: 0.7rem;
    }
    
    .card-expiry {
        font-size: 0.65rem;
    }
    
    .visa-logo,
    .mastercard-logo,
    .elkart-logo,
    .maestro-logo,
    .unionpay-logo {
        font-size: 0.6rem;
    }
}

/* Transfer Section */
.bank-details {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid #e2e8f0;
}

.bank-details h3 {
    color: #333;
    margin-bottom: 1.5rem;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-item label {
    font-weight: 600;
    color: #333;
    min-width: 150px;
}

.detail-item span {
    color: #666;
    flex: 1;
    text-align: right;
}

.copyable {
    position: relative;
}

.copy-btn {
    background: #ff6b6b;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    margin-left: 1rem;
    transition: background 0.3s ease;
}

/* Transfer Bank Selector */
.transfer-bank-selector {
    text-align: center;
    margin-bottom: 1rem;
}

.transfer-bank-selector h3 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.transfer-bank-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.transfer-bank-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.2rem;
    border: 2px solid #e2e8f0;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    color: #64748b;
}

.transfer-bank-btn:hover {
    border-color: #ff6b6b;
    color: #ff6b6b;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.15);
}

.transfer-bank-btn.active {
    background: #ff6b6b;
    border-color: #ff6b6b;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.25);
}

.transfer-bank-btn i {
    font-size: 1.1rem;
}

/* Transfer Bank Details */
.transfer-bank-details {
    position: relative;
    min-height: 400px;
}

.bank-details {
    display: none;
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid #e2e8f0;
}

.bank-details.active {
    display: block;
}

.bank-details h3 {
    color: #333;
    margin-bottom: 1.5rem;
}

/* Donation Info */
.donation-info {
    margin-top: 2rem;
    background: #f0fdf4;
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid #bbf7d0;
}

.donation-info h3 {
    color: #166534;
    margin-bottom: 1rem;
}

.donation-info ul {
    list-style: none;
}

.donation-info li {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    color: #166534;
}

.donation-info i {
    color: #22c55e;
    margin-right: 0.75rem;
}

/* Payment Summary */
.payment-summary {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid #e2e8f0;
    margin-bottom: 1.5rem;
}

.payment-summary h3 {
    color: #333;
    margin-bottom: 1rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #e2e8f0;
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-item label {
    color: #666;
}

.summary-item span {
    font-weight: 600;
    color: #333;
}

.summary-total {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid #e2e8f0;
}

.summary-total label {
    font-weight: 700;
    color: #333;
}

.summary-total span {
    font-weight: 700;
    color: #ff6b6b;
    font-size: 1.2rem;
}

/* Security Info */
.security-info {
    background: #f0f9ff;
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid #bae6fd;
    margin-bottom: 1.5rem;
}

.security-info h3 {
    color: #0369a1;
    margin-bottom: 1rem;
}

.security-info ul {
    list-style: none;
}

.security-info li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    color: #0369a1;
}

.security-info li::before {
    content: "✓";
    color: #0ea5e9;
    font-weight: bold;
    margin-right: 0.75rem;
}

/* Contact Info */
.contact-info {
    background: #fefce8;
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid #fde047;
}

.contact-info h3 {
    color: #854d0e;
    margin-bottom: 1rem;
}

.contact-info p {
    color: #854d0e;
    margin-bottom: 1rem;
}

.contact-info ul {
    list-style: none;
}

.contact-info li {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    color: #854d0e;
}

.contact-info i {
    color: #eab308;
    margin-right: 0.75rem;
    width: 20px;
}

/* Payment Actions */
.payment-actions {
    display: flex;
    gap: 1rem;
    padding: 2rem;
    background: #f8fafc;
    border-top: 2px solid #e2e8f0;
}

.back-btn,
.confirm-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.back-btn {
    background: white;
    color: #666;
    border: 2px solid #e2e8f0;
}

.back-btn:hover {
    border-color: #cbd5e0;
    background: #f8fafc;
}

.confirm-btn {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    margin-left: auto;
}

.confirm-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 107, 107, 0.3);
}

/* Language Switcher */
.language-switcher {
    position: relative;
    display: flex;
    align-items: center;
}

.lang-btn {
    background: #f1f5f9;
    color: #475569;
    border: 1px solid #e2e8f0;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: #e2e8f0;
    color: #334155;
    transform: translateY(-1px);
}

.lang-btn i {
    font-size: 1rem;
}

.current-lang {
    font-size: 0.9rem;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    min-width: 180px;
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: background 0.3s ease;
    border-bottom: 1px solid #f1f5f9;
}

.lang-option:last-child {
    border-bottom: none;
}

.lang-option:hover {
    background: #f8fafc;
}

.lang-option .flag {
    font-size: 1.25rem;
}

.lang-option span:last-child {
    color: #334155;
    font-weight: 500;
}

/* Footer */
footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem 0;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #2563eb;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.footer-section i {
    margin-right: 0.5rem;
    color: #2563eb;
}

.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #ff6b6b;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }

    header nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
    }
    
    nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
    }
    
    .logo {
        flex: 1;
    }
    
    .language-switcher {
        order: 2;
        flex-shrink: 0;
        margin-right: 1rem;
    }

    .mobile-menu {
        order: 3;
        flex-shrink: 0;
        margin-left: 0.5rem;
    }
    
    .qr-bank-buttons {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .qr-bank-btn {
        padding: 0.8rem 1rem;
        font-size: 0.95rem;
    }
    
    .qr-codes {
        grid-template-columns: 1fr;
        min-height: 300px;
    }
    
    .qr-placeholder {
        width: 200px;
        height: 200px;
    }
    
    .payment-content {
        grid-template-columns: 1fr;
    }
    
    .qr-section {
        grid-template-columns: 1fr;
    }
    
    .amount-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .method-tabs {
        flex-wrap: wrap;
    }
    
    .payment-actions {
        flex-direction: column;
    }
    
    .confirm-btn {
        margin-left: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .payment-header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-section ul {
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-section {
        margin-bottom: 1.5rem;
    }
    
    header nav {
        gap: 0.75rem;
    }
    
    .language-switcher {
        order: 2;
        margin-right: 0.5rem;
    }
    
    .mobile-menu {
        order: 3;
        margin-left: 0.75rem;
    }
    
    .lang-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .qr-bank-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .qr-bank-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
        width: 100%;
        max-width: none;
        justify-content: center;
    }
    
    .transfer-bank-selector {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .transfer-bank-btn {
        width: 100%;
        max-width: none;
        justify-content: center;
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .qr-codes {
        grid-template-columns: 1fr;
        min-height: 280px;
    }
    
    .qr-placeholder {
        width: 180px;
        height: 180px;
    }
    
    .qr-placeholder i {
        font-size: 2.5rem;
    }
    
    .payment-container {
        padding: 1rem;
    }
    
    .payment-content {
        padding: 1rem;
    }
    
    .payment-section {
        padding: 2rem 0;
    }
    
    
    .payment-actions {
        padding: 1rem;
    }
    
    .amount-options {
        grid-template-columns: 1fr;
    }
    
    .payment-header h1 {
        font-size: 1.75rem;
        line-height: 1.2;
    }
    
    .payment-header p {
        font-size: 1rem;
        line-height: 1.5;
    }
    
    .payment-methods h2 {
        font-size: 1.5rem;
    }
    
    .tab-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .qr-placeholder {
        padding: 2rem;
    }
    
    .qr-placeholder i {
        font-size: 3rem;
    }
    
    .qr-placeholder p {
        font-size: 1rem;
    }
    
    .qr-instructions h3 {
        font-size: 1.2rem;
    }
    
    .qr-instructions ol li {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    .bank-card {
        margin-bottom: 1rem;
    }
    
    .card-display {
        padding: 1.5rem;
    }
    
    .card-info .bank-name {
        font-size: 1rem;
    }
    
    .card-number {
        font-size: 1.1rem;
    }
    
    .card-holder,
    .card-expiry {
        font-size: 0.8rem;
    }
    
    .transfer-section h3 {
        font-size: 1.2rem;
    }
    
    .detail-item {
        padding: 0.5rem 0;
    }
    
    .detail-item span {
        font-size: 0.8rem;
    }
    
    .summary-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .detail-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .donation-info h3 {
        font-size: 1.2rem;
    }
    
    .donation-info ul li {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    .payment-summary h3 {
        font-size: 1.1rem;
    }
    
    .summary-item label,
    .summary-item span {
        font-size: 0.8rem;
    }
    
    .summary-total label {
        font-size: 0.9rem;
    }
    
    .summary-total span {
        font-size: 1rem;
    }
    
    .security-info h3 {
        font-size: 1.1rem;
    }
    
    .security-info ul li {
        font-size: 0.8rem;
    }
    
    .contact-info h3 {
        font-size: 1.1rem;
    }
    
    .contact-info p {
        font-size: 0.85rem;
    }
    
    .contact-info ul li {
        font-size: 0.8rem;
    }
    
    .back-btn {
        width: 100%;
        padding: 1rem;
        font-size: 1rem;
        justify-content: center;
    }
}

/* Very small screens */
@media (max-width: 360px) {
    .container {
        padding: 0 10px;
    }
    
    .payment-header h1 {
        font-size: 1.5rem;
    }
    
    .payment-methods h2 {
        font-size: 1.3rem;
    }
    
    .tab-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .qr-placeholder {
        padding: 1.5rem;
        width: 160px;
        height: 160px;
    }
    
    .qr-placeholder i {
        font-size: 2.5rem;
    }
    
    .qr-instructions h3 {
        font-size: 1.1rem;
    }
    
    .qr-instructions ol li {
        font-size: 0.85rem;
    }
    
    .card-display {
        padding: 1rem;
    }
    
    .card-info .bank-name {
        font-size: 0.9rem;
    }
    
    .card-number {
        font-size: 1rem;
    }
    
    .card-holder,
    .card-expiry {
        font-size: 0.75rem;
    }
    
    .transfer-section h3 {
        font-size: 1.1rem;
    }
    
    .detail-item {
        padding: 0.5rem 0;
    }
    
    .detail-item label {
        font-size: 0.85rem;
    }
    
    .detail-item span {
        font-size: 0.85rem;
    }
    
    .donation-info h3 {
        font-size: 1.1rem;
    }
    
    .donation-info ul li {
        font-size: 0.85rem;
    }
    
    .payment-summary h3 {
        font-size: 1.1rem;
    }
    
    .summary-item label,
    .summary-item span {
        font-size: 0.85rem;
    }
    
    .security-info h3 {
        font-size: 1.1rem;
    }
    
    .security-info ul li {
        font-size: 0.8rem;
    }
    
    .contact-info h3 {
        font-size: 1.1rem;
    }
    
    .contact-info p,
    .contact-info ul li {
        font-size: 0.8rem;
    }
}

/* Touch optimizations for mobile */
@media (hover: none) and (pointer: coarse) {
    .bank-card:hover {
        transform: none;
    }
    
    .bank-card:active {
        transform: scale(0.98);
    }
    
    .tab-btn:hover {
        background: #e2e8f0;
        color: #334155;
    }
    
    .tab-btn:active {
        transform: scale(0.98);
    }
    
    .copy-btn:hover {
        background: #ee5a24;
    }
    
    .copy-btn:active {
        transform: scale(0.98);
    }
    
    .back-btn:hover {
        border-color: #cbd5e0;
        background: #f8fafc;
    }
    
    .back-btn:active {
        transform: scale(0.98);
    }
    
    /* Increase touch targets */
    .tab-btn {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .copy-btn {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .back-btn {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .lang-btn {
        min-height: 44px;
        padding: 0.75rem 1rem;
    }
    
    .lang-option {
        min-height: 44px;
        padding: 1rem;
    }
}

/* Landscape mobile optimizations */
@media (max-width: 768px) and (orientation: landscape) {
    .payment-section {
        padding: 2rem 0;
    }
    
    .payment-header h1 {
        font-size: 2rem;
    }
    
    .qr-section {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .bank-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* High DPI displays optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .bank-card,
    .tab-btn,
    .copy-btn,
    .back-btn {
        border-width: 1px;
    }
}

/* Form elements optimization */
@media (max-width: 480px) {
    input, textarea, select {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* Language switcher mobile optimization */
@media (max-width: 480px) {
    .language-switcher {
        margin-top: 0.5rem;
    }
    
    .lang-dropdown {
        right: -50px;
        min-width: 150px;
    }
}

/* Additional mobile improvements */
@media (max-width: 480px) {
    .payment-container {
        padding: 1rem;
    }
    
    .payment-left,
    .payment-right {
        padding: 1rem;
    }
    
    .qr-section {
        gap: 1rem;
    }
    
    .qr-code,
    .qr-instructions {
        padding: 1rem;
    }
    
    .card-section {
        padding: 1rem;
    }
    
    .transfer-section {
        padding: 1rem;
    }
    
    .donation-info {
        padding: 1rem;
    }
    
    .payment-summary {
        padding: 1rem;
    }
    
    .security-info {
        padding: 1rem;
    }
    
    .contact-info {
        padding: 1rem;
    }
    
    .footer-section {
        margin-bottom: 1.5rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-section ul {
        text-align: center;
    }
}