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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
    font-size: 28px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-size: 14px;
}

input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #667eea;
}

.login-button {
    width: 100%;
    padding: 12px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.login-button:hover {
    background: #764ba2;
}

.error-message {
    background: #fee;
    color: #e33;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    text-align: center;
}

.success-message {
    background: #efe;
    color: #3a3;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    text-align: center;
}

.verification-section {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.verification-section input {
    flex: 1;
}

.send-code-button {
    padding: 12px 16px;
    background: #17a2b8;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    white-space: nowrap;
}

.send-code-button:hover:not(:disabled) {
    background: #138496;
}

.send-code-button:disabled {
    background: #6c757d;
    cursor: not-allowed;
}

.forgot-password-link {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
    margin-top: 10px;
    display: inline-block;
}

.forgot-password-link:hover {
    text-decoration: underline;
}

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 450px;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    right: 20px;
    top: 15px;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
}

.modal h2 {
    color: #333;
    text-align: center;
    margin-bottom: 25px;
    font-size: 24px;
}

.signup-section {
    margin-top: 30px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.signup-section p {
    color: #666;
    margin-bottom: 15px;
    font-size: 14px;
}

.signup-button {
    display: inline-block;
    padding: 10px 20px;
    background: #28a745;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: background-color 0.3s ease;
}

.signup-button:hover {
    background: #218838;
}