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

body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e1e1e 0%, #2d2d2d 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ffffff;
}

.login-container {
    background: rgba(33, 33, 33, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 48px 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    text-align: center;
    margin-bottom: 32px;
}

.logo-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.logo-icon .material-icons {
    font-size: 32px;
    color: white;
}

.title {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 8px;
    color: #ffffff;
}

.subtitle {
    font-size: 14px;
    color: #b3b3b3;
    font-weight: 400;
}

.form-group {
    margin-bottom: 24px;
    position: relative;
}

.input-field {
    width: 100%;
    padding: 16px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #ffffff;
    font-size: 16px;
    font-family: 'Roboto', sans-serif;
    transition: all 0.3s ease;
}

.input-field:focus {
    outline: none;
    border-color: #667eea;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.input-field::placeholder {
    color: #888888;
}

.input-label {
    position: absolute;
    top: -8px;
    left: 12px;
    background: rgba(33, 33, 33, 0.95);
    padding: 0 8px;
    font-size: 12px;
    color: #b3b3b3;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.loading {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.loading .spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.footer-text {
    text-align: center;
    margin-top: 24px;
    color: #888888;
    font-size: 14px;
}

.footer-text a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-text a:hover {
    color: #8fa4f3;
}

.success-message {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.3);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 16px;
    color: #81c784;
    font-size: 14px;
    display: none;
}

.error-message {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid rgba(244, 67, 54, 0.3);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 16px;
    color: #e57373;
    font-size: 14px;
    display: none;
}

@media (max-width: 480px) {
    .login-container {
        margin: 20px;
        padding: 32px 24px;
    }
}