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

body {
    font-family: 'Unbounded', sans-serif;
    background: linear-gradient(135deg, #000000 0%, #1a0000 50%, #000000 100%);
    min-height: 100vh;
    color: #ffffff;
    overflow-x: hidden;
}

.error-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding: 20px;
}

.error-screen h1 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.spinner {
    border: 4px solid rgba(255, 0, 0, 0.3);
    border-top: 4px solid #ff0000;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
    position: relative;
}

.spinner::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border: 4px solid transparent;
    border-top-color: rgba(255, 0, 0, 0.6);
    border-radius: 50%;
    animation: spin 0.5s linear infinite reverse;
}

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

.loader p {
    font-size: 1.1rem;
    color: #ffffff;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    padding-bottom: 100px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #ff0000;
    text-shadow: 2px 2px 4px rgba(255, 0, 0, 0.5);
}

.main-nav {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    overflow-x: auto;
    padding-bottom: 10px;
}

.nav-btn {
    background: rgba(255, 0, 0, 0.2);
    border: 1px solid rgba(255, 0, 0, 0.3);
    color: #ffffff;
    padding: 10px 15px;
    border-radius: 10px;
    font-family: 'Unbounded', sans-serif;
    font-size: 0.9rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s;
}

.nav-btn:hover {
    background: rgba(255, 0, 0, 0.3);
}

.nav-btn.active {
    background: #ff0000;
    border: 1px solid #ff0000;
    color: #ffffff;
    font-weight: 700;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.card {
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 0, 0, 0.3);
    box-shadow: 0 8px 32px rgba(255, 0, 0, 0.2);
}

.card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn {
    background: rgba(255, 0, 0, 0.2);
    border: 2px solid rgba(255, 0, 0, 0.5);
    color: #ffffff;
    padding: 15px 20px;
    border-radius: 12px;
    font-family: 'Unbounded', sans-serif;
    font-size: 1rem;
    font-weight: 400;
    cursor: pointer;
    text-decoration: none;
    display: block;
    text-align: center;
    transition: all 0.3s;
}

.btn:hover {
    background: rgba(255, 0, 0, 0.4);
    border-color: #ff0000;
    transform: translateY(-2px);
}

.btn-primary {
    background: #ff0000;
    border: 2px solid #ff0000;
    color: #ffffff;
    font-weight: 700;
}

.btn-primary:hover {
    background: #cc0000;
    border-color: #cc0000;
}

.btn-secondary {
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(255, 0, 0, 0.3);
    color: #ffffff;
}

.btn-small {
    padding: 8px 15px;
    font-size: 0.9rem;
}

.profile-info {
    margin-bottom: 20px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 0, 0, 0.2);
}

.info-row:last-child {
    border-bottom: none;
}

.label {
    font-weight: 400;
}

.value {
    font-weight: 700;
    color: #ff0000;
}

.profile-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

#keysList {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.key-item {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid rgba(255, 0, 0, 0.3);
}

.key-item.inactive {
    opacity: 0.6;
}

.key-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.key-title {
    font-weight: 700;
    font-size: 1.1rem;
}

.key-status {
    padding: 5px 10px;
    border-radius: 8px;
    font-size: 0.8rem;
}

.key-status.active {
    background: rgba(255, 0, 0, 0.3);
    color: #ffffff;
    border: 1px solid rgba(255, 0, 0, 0.5);
}

.key-status.expired {
    background: rgba(0, 0, 0, 0.5);
    color: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.key-info {
    margin-bottom: 10px;
}

.key-info-item {
    margin: 5px 0;
    font-size: 0.9rem;
}

.connection-string {
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 0, 0, 0.3);
    padding: 10px;
    border-radius: 8px;
    word-break: break-all;
    font-size: 0.85rem;
    margin-top: 10px;
    position: relative;
    color: #ffffff;
}

.copy-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(255, 0, 0, 0.3);
    border: 1px solid rgba(255, 0, 0, 0.5);
    color: #ffffff;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
}

.copy-btn:hover {
    background: rgba(255, 0, 0, 0.5);
}

.host-card {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 0, 0, 0.3);
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 15px;
}

.host-title {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.plan-item {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 0, 0, 0.2);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.plan-info {
    flex: 1;
}

.plan-name {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.plan-details {
    font-size: 0.9rem;
    opacity: 0.8;
}

.plan-price {
    font-weight: 700;
    font-size: 1.2rem;
    color: #ff0000;
    margin-left: 15px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 400;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid rgba(255, 0, 0, 0.3);
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.5);
    color: #ffffff;
    font-family: 'Unbounded', sans-serif;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: #ff0000;
    background: rgba(0, 0, 0, 0.7);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 1;
}

.empty {
    text-align: center;
    padding: 40px 20px;
    opacity: 0.7;
}

.referral-info {
    margin-bottom: 20px;
}

.info-text {
    margin: 15px 0;
    opacity: 0.9;
    font-size: 0.9rem;
}

.instructions-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.alert {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.alert-success {
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 0, 0, 0.5);
    color: #ffffff;
}

.alert-error {
    background: rgba(0, 0, 0, 0.8);
    border: 2px solid #ff0000;
    color: #ffffff;
}

.alert-info {
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 0, 0, 0.5);
    color: #ffffff;
}

.form-hint {
    display: block;
    margin-top: 5px;
    font-size: 0.85rem;
    opacity: 0.7;
    color: rgba(255, 255, 255, 0.7);
}

.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}

.payment-method {
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(255, 0, 0, 0.3);
    padding: 15px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.payment-method:hover {
    background: rgba(0, 0, 0, 0.7);
    border-color: rgba(255, 0, 0, 0.5);
}

.payment-method.selected {
    background: rgba(255, 0, 0, 0.2);
    border-color: #ff0000;
}

.payment-method input[type="radio"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.payment-method-label {
    flex: 1;
    font-weight: 500;
    cursor: pointer;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:disabled:hover {
    transform: none;
    background: rgba(255, 0, 0, 0.2);
}

.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader-overlay.hidden {
    display: none;
}

.loader-overlay .spinner {
    width: 60px;
    height: 60px;
    border-width: 5px;
    margin-bottom: 30px;
}

.loader-overlay p {
    font-size: 1.2rem;
    color: #ffffff;
    text-align: center;
}

/* Улучшенная адаптивность */
@media (max-width: 480px) {
    .nav-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    
    .btn {
        padding: 12px 15px;
        font-size: 0.9rem;
    }
    
    .card {
        padding: 15px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
}

/* Исправление переполнения текста */
.key-info-item,
.plan-name,
.plan-details {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.plan-item {
    flex-wrap: wrap;
    gap: 10px;
}

.plan-item .btn {
    min-width: 80px;
}

.connection-string {
    overflow-x: auto;
    max-width: 100%;
}

.connection-string div {
    word-break: break-all;
    white-space: pre-wrap;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 0, 0, 0.3);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: #ff0000;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.admin-actions {
    margin-top: 20px;
}