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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* Login Container */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

/* Logo */
.logo h1 {
    font-size: 2.5em;
    font-weight: bold;
    color: #000;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.logo p {
    color: #666;
    margin-bottom: 30px;
    font-size: 0.9em;
}

/* Auth Tabs */
.auth-tabs {
    display: flex;
    margin-bottom: 30px;
    border-radius: 4px;
    background: #f5f5f5;
    padding: 4px;
}

.tab-btn {
    flex: 1;
    padding: 10px;
    text-align: center;
    background: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    color: #666;
    font-size: 14px;
}

.tab-btn.active {
    background: #000;
    color: white;
}

.tab-btn:hover:not(.active) {
    background: #e1e5e9;
}

/* Form */
.login-form {
    text-align: left;
    display: none;
}

.login-form.active {
    display: block;
}

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

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #333;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e1e5e9;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
    background-color: white;
}

.input-group input:focus {
    outline: none;
    border-color: #000;
}

/* Login Button */
.login-btn {
    width: 100%;
    padding: 12px;
    background-color: #000;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}

.login-btn:hover {
    background-color: #333;
}

.login-btn:disabled {
    background-color: #666;
    cursor: not-allowed;
}

/* Error Message */
.error-message {
    color: #e74c3c;
    margin-top: 15px;
    font-size: 14px;
    text-align: center;
    display: none;
}

.error-message.show {
    display: block;
}

/* Success Message */
.error-message.success {
    color: #27ae60;
}