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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    min-height: 100vh;
    background: #f5f5f5;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: linear-gradient(180deg, #1e90ff 0%, #ff69b4 100%);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.sidebar-header {
    padding: 30px 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.sidebar-header h2 {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
    color: white;
}

.sidebar-menu {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 15px 25px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.menu-item.active {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border-left-color: white;
}

.menu-icon {
    font-size: 20px;
    margin-right: 12px;
}

.menu-text {
    font-size: 16px;
    font-weight: 500;
}

.sidebar-footer {
    padding: 20px;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 12px;
    opacity: 0.7;
}

/* Main Content */
.main-content {
    margin-left: 260px;
    flex: 1;
    padding: 40px;
    min-height: 100vh;
    background: linear-gradient(135deg, #1e90ff 0%, #ff69b4 100%);
}

/* Page Container */
.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

.page-header {
    margin-bottom: 30px;
}

.page-header h1 {
    color: white;
    margin: 0 0 10px 0;
    font-size: 32px;
}

.page-description {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    font-size: 16px;
}

.container {
    width: 100%;
    max-width: 480px;
    position: relative;
}

.card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    position: relative;
    overflow: hidden;
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
    font-size: 28px;
}

h2 {
    color: #1e90ff;
    margin-bottom: 10px;
    font-size: 22px;
}

.description {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.5;
}

.highlight {
    color: #1e90ff;
    font-weight: 600;
}

.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

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

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    color: #333;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

input[type="text"] {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    outline: none;
}

input[type="text"]:focus {
    border-color: #1e90ff;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* OTP Input Styling */
.otp-inputs {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.otp-input {
    width: 50px;
    height: 55px;
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.otp-input:focus {
    border-color: #ff69b4;
    box-shadow: 0 0 0 3px rgba(255, 105, 180, 0.1);
}

/* Timer Section */
.timer-section {
    text-align: center;
    margin-bottom: 20px;
}

.timer {
    font-weight: 700;
    color: #1e90ff;
    font-size: 18px;
}

.timer.expired {
    color: #e74c3c;
}

/* Button Styling */
.btn {
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #1e90ff 0%, #ff69b4 100%);
    color: white;
    margin-bottom: 10px;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    background: white;
    color: #1e90ff;
    border: 2px solid #1e90ff;
    margin-bottom: 10px;
}

.btn-secondary:hover:not(:disabled) {
    background: #1e90ff;
    color: white;
}

.btn-secondary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-link {
    background: transparent;
    color: #1e90ff;
    text-decoration: underline;
}

.btn-link:hover {
    color: #ff69b4;
}

/* Loader */
.loader {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-left: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success Section */
.success-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e90ff 0%, #ff69b4 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    margin: 0 auto 20px;
    animation: scaleIn 0.5s ease-out;
}

@keyframes scaleIn {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

#successSection h2 {
    text-align: center;
    margin-bottom: 15px;
}

#successSection .description {
    text-align: center;
    margin-bottom: 25px;
}

/* Alert Messages */
#alertContainer {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    max-width: 400px;
}

.alert {
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-left: 4px solid #17a2b8;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: fixed;
        top: 0;
        left: 0;
        flex-direction: column;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
        z-index: 1001;
    }

    .sidebar-header {
        padding: 10px 15px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        text-align: center;
    }

    .sidebar-header h2 {
        font-size: 16px;
        font-weight: 700;
    }

    .sidebar-menu {
        flex-direction: row;
        padding: 0;
        overflow-x: auto;
        justify-content: space-evenly;
        background: rgba(0, 0, 0, 0.1);
        display: flex;
        width: 100%;
    }

    .menu-item {
        flex-direction: row;
        padding: 10px 8px;
        min-width: auto;
        flex: 1;
        max-width: 33.33%;
        text-align: center;
        justify-content: center;
        align-items: center;
        gap: 5px;
        border-radius: 0;
        white-space: nowrap;
    }

    .menu-text {
        font-size: 10px;
        margin-top: 0;
        font-weight: 500;
        display: inline;
    }

    .menu-icon {
        margin-right: 0;
        font-size: 14px;
        display: inline;
    }

    .sidebar-footer {
        display: none;
    }

    .main-content {
        margin-left: 0;
        margin-top: 90px;
        padding: 15px 10px;
    }

    .container {
        padding: 0;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-top: 15px;
    }

    .page-header {
        margin-bottom: 20px;
    }

    .page-header h1 {
        font-size: 24px;
        margin-bottom: 5px;
    }

    .page-description {
        font-size: 13px;
    }

    .product-card {
        box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    }

    .product-header {
        padding: 20px 15px;
        border-radius: 15px 15px 0 0;
    }

    .product-icon {
        font-size: 40px;
        margin-bottom: 8px;
    }

    .product-header h3 {
        font-size: 20px;
    }

    .product-body {
        padding: 15px;
    }

    .product-description {
        font-size: 13px;
        line-height: 1.5;
        margin-bottom: 12px;
    }

    .product-features {
        gap: 8px;
        margin-bottom: 15px;
    }

    .feature-item {
        font-size: 13px;
        padding: 6px 0;
    }

    .product-price {
        padding: 15px 0;
    }

    .product-price .price-label {
        font-size: 12px;
    }

    .product-price .price-amount {
        font-size: 24px;
    }

    .product-footer {
        padding: 0 15px 15px;
    }

    .product-footer .btn {
        font-size: 14px;
        padding: 12px 20px;
    }

    .contact-buttons {
        flex-direction: column;
        gap: 10px;
        margin-top: 20px;
    }

    .contact-btn {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
        font-size: 14px;
    }

    .contact-icon-img {
        width: 24px;
        height: 24px;
    }

    .payment-card {
        padding: 20px 15px;
        border-radius: 15px;
    }

    .payment-image {
        margin-bottom: 20px;
    }

    .payment-image img {
        max-width: 95%;
        border-radius: 8px;
    }

    .payment-info h2 {
        font-size: 20px;
        margin-bottom: 10px;
    }

    .payment-info p {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .card {
        padding: 20px 12px;
    }

    .otp-input {
        width: 38px;
        height: 42px;
        font-size: 16px;
    }

    .otp-inputs {
        gap: 5px;
    }

    h1 {
        font-size: 20px;
    }

    h2 {
        font-size: 16px;
    }

    .sidebar-header {
        padding: 10px;
    }

    .sidebar-header h2 {
        font-size: 14px;
    }

    .menu-item {
        padding: 6px;
        min-width: 55px;
    }

    .menu-text {
        font-size: 9px;
    }

    .menu-icon {
        font-size: 16px;
    }

    .main-content {
        padding: 10px 8px;
    }

    .page-header {
        margin-bottom: 8px;
    }

    .page-header h1 {
        font-size: 20px;
        margin-bottom: 5px;
    }

    .page-description {
        font-size: 12px;
    }

    .products-grid {
        gap: 8px;
        margin-top: 8px;
    }

    .product-card {
        border-radius: 10px;
    }

    .product-header {
        padding: 12px 10px;
        border-radius: 10px 10px 0 0;
    }

    .product-icon {
        font-size: 28px;
        margin-bottom: 5px;
    }

    .product-header h3 {
        font-size: 16px;
    }

    .product-body {
        padding: 8px 10px;
    }

    .product-description {
        font-size: 12px;
        line-height: 1.4;
        margin-bottom: 6px;
    }

    .product-features {
        gap: 3px;
        margin-bottom: 8px;
    }

    .feature-item {
        font-size: 11px;
        padding: 3px 0;
        line-height: 1.4;
    }

    .product-price {
        padding: 8px 0;
        gap: 2px;
    }

    .product-price .price-label {
        font-size: 10px;
    }

    .product-price .price-amount {
        font-size: 18px;
    }

    .product-footer {
        padding: 0 10px 8px;
    }

    .product-footer .btn {
        font-size: 11px;
        padding: 7px 16px;
        border-radius: 6px;
        white-space: nowrap;
    }

    .contact-btn {
        padding: 10px 18px;
        font-size: 13px;
    }

    .contact-icon-img {
        width: 20px;
        height: 20px;
    }

    .payment-card {
        padding: 15px 12px;
    }

    .payment-info h2 {
        font-size: 18px;
    }

    .payment-info p {
        font-size: 12px;
    }
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 30px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.product-header {
    background: linear-gradient(135deg, #1e90ff 0%, #ff69b4 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.product-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.product-header h3 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
}

.product-body {
    padding: 30px;
    flex: 1;
}

.product-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-features {
    margin-bottom: 25px;
}

.feature-item {
    color: #333;
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
}

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

.product-price {
    text-align: center;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.product-price .price-label {
    font-size: 14px;
    color: #666;
    font-weight: 400;
}

.product-price .price-amount {
    font-size: 36px;
    font-weight: 800;
    color: #ff69b4;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.product-price .period {
    font-size: 16px;
    color: #999;
}

.product-footer {
    padding: 0 30px 30px;
}

.product-footer .btn {
    width: 100%;
}

/* Payment Card */
.payment-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    max-width: 600px;
    margin: 30px auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.payment-image {
    margin-bottom: 30px;
}

.payment-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.image-placeholder {
    padding: 60px 20px;
    background: #f5f5f5;
    border-radius: 10px;
    color: #999;
}

.image-placeholder p {
    margin: 0 0 10px 0;
    font-size: 18px;
}

.image-placeholder small {
    font-size: 14px;
}

.payment-info h2 {
    color: #1e90ff;
    margin: 0 0 15px 0;
    font-size: 28px;
}

.payment-info p {
    color: #666;
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
}

/* Contact Buttons */
.contact-buttons {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    justify-content: center;
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.contact-icon {
    font-size: 24px;
}

.contact-icon-img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.btn-whatsapp {
    background: #000000;
    color: #ffffff;
    border: 2px solid #000000;
}

.btn-whatsapp:hover {
    background: #25D366;
    color: white;
}

.btn-telegram {
    background: #000000;
    color: #ffffff;
    border: 2px solid #000000;
}

.btn-telegram:hover {
    background: #0088cc;
    color: white;
}