body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    min-height: 100vh;
    color: #000000;
    display: flex;
    flex-direction: column;
    background-image:
        linear-gradient(rgba(254,255,255,0.7), rgba(237,238,240,0.7)),
        url('images/fall.gif');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.07); 
    backdrop-filter: blur(12px); 
    -webkit-backdrop-filter: blur(12px); 
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 30px;
    box-sizing: border-box;
}

.logo {
    background: transparent;
    border: none;
    color: #080808;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    font-family: 'Playfair Display', serif;
}

.btn {
    background: rgb(3, 182, 15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    padding: 8px 20px;
    border-radius: 20px;
    cursor: pointer;
    transition: background 0.3s ease;
    font-weight: bold;
}

.btn:hover {
    background: rgb(2, 150, 12);
}

.auth-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 100px 20px 40px;
    box-sizing: border-box;
}

.auth-container {
    width: 100%;
    max-width: 450px;
    background: rgba(255, 255, 255, 0.6); 
    backdrop-filter: blur(16px);             
    -webkit-backdrop-filter: blur(16px);     
    border: 1px solid rgba(255, 255, 255, 0.4); 
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2); 
    border-radius: 24px;
    padding: 40px;
    box-sizing: border-box;
    text-align: center;
}

.auth-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2.2rem;
    color: #000000;
    margin: 0 0 25px 0;
    font-weight: 700;
}

.auth-toggle {
    display: flex;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 30px;
    padding: 5px;
    margin-bottom: 30px;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.auth-toggle button {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: bold;
    color: #555;
    cursor: pointer;
    transition: all 0.3s ease;
}

.auth-toggle button.active {
    background: rgb(3, 182, 15);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(3, 182, 15, 0.3);
}

.input-group {
    text-align: left;
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: bold;
    color: #333;
}

.input-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.8);
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: rgb(3, 182, 15);
    box-shadow: 0 0 0 3px rgba(3, 182, 15, 0.2);
    background: #ffffff;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: rgb(3, 182, 15);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.submit-btn:hover {
    background: rgb(2, 150, 12);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(3, 182, 15, 0.3);
}

.error-message {
    color: #d32f2f;
    margin-top: 15px;
    font-size: 0.95rem;
    font-weight: bold;
    min-height: 20px;
}