* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background-color: #fff;
}

.container {
    max-width: 430px;
    margin: 0 auto;
    padding: 20px;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.nav-tabs {
    display: flex;
    justify-content: flex-start;
    border-bottom: 1px solid #ddd;
    margin-bottom: 40px;
}

.nav-tabs a {
    text-decoration: none;
    color: #333;
    padding: 10px 20px;
    font-size: 18px;
}

.nav-tabs a.active {
    color: red;
    border-bottom: 2px solid red;
}

.welcome-text {
    text-align: center;
    margin: 60px 0;
}

.welcome-text h1 {
    font-size: 48px;
    font-weight: normal;
    line-height: 1.2;
}

.login-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
}

.btn {
    padding: 15px;
    border-radius: 25px;
    border: none;
    font-size: 16px;
    cursor: pointer;
}

.btn-primary {
    background-color: red;
    color: white;
}

.btn-outline {
    background-color: white;
    border: 2px solid red;
    color: red;
}

.language-selector {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: auto;
    gap: 10px;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border-radius: 20px;
    background-color: #f5f5f5;
}

.lang-btn img {
    width: 24px;
    height: 24px;
}

.version {
    color: #666;
    font-size: 14px;
}

.bottom-nav {
    display: flex;
    justify-content: space-between;
    background-color: red;
    padding: 20px;
    margin: 20px -20px -20px -20px;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: white;
    text-align: center;
    flex: 1;
}

.icon {
    width: 24px;
    height: 24px;
    background-color: white;
    border-radius: 50%;
    margin-bottom: 8px;
}

.exchange-rate {
    background-color: red;
    color: white;
    text-align: center;
    padding: 10px;
    margin: 0 -20px -20px -20px;
}

/* Loading Overlay Styles */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loader {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-radius: 50%;
    border-top: 5px solid red;
    animation: spin 1s linear infinite;
}

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