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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-image: url('https://images.unsplash.com/photo-1506905925346-21bda4d32df4?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2070&q=80');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: #333;
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.5);
    z-index: -1;
}

.container {
    background-color: rgba(255, 255, 255, 0.85);
    border-radius: 10px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.2);
    padding: 2.5rem;
    width: 100%;
    max-width: 500px;
    text-align: center;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

h1 {
    color: #2d8cff; /* Zoom blue color */
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.subtitle {
    color: #5a6c7d;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    font-style: italic;
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

input[type="text"] {
    width: 100%;
    padding: 0.85rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

input[type="text"]:focus {
    border-color: #2d8cff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(45, 140, 255, 0.2), inset 0 1px 3px rgba(0, 0, 0, 0.05);
    background-color: #fff;
}

input[type="text"]::placeholder {
    color: #aaa;
    font-style: italic;
}

.password-hint {
    display: block;
    font-size: 0.85rem;
    color: #6c757d;
    margin-top: 0.5rem;
    font-style: italic;
}

.btn {
    background: linear-gradient(135deg, #2d8cff 0%, #1a5dab 100%);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.btn:hover {
    background: linear-gradient(135deg, #1a5dab 0%, #2d8cff 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.error-container {
    text-align: center;
    padding: 2rem;
}

.error-icon {
    font-size: 4rem;
    color: #ff3b30;
    margin-bottom: 1rem;
}

.error-message {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 1.5rem;
}

.back-link {
    color: #2d8cff;
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}