:root {
    --primary-green: #1A4D4E;  
    --accent-orange: #E89020;   
    --bg-cream: #F6F4EE;        
    --white: #FFFFFF;           
    --text-grey: #4A4A4A;       
    --error-red: #d93025;      
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-cream); 
    background-image: url("/image/background.png");
    background-size: cover;      
    background-position: center; 
    background-repeat: no-repeat;
    background-attachment: fixed;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    color: var(--primary-green);
}

.container {
    background: var(--white);
    padding: 50px 45px;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(26, 77, 78, 0.15); 
    max-width: 480px;
    width: 100%;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

h1, h2 {
    margin-bottom: 30px;
    color: var(--primary-green);
    text-align: center;
    font-weight: 700;
}

h1 { font-size: 28px; }
h2 { font-size: 24px; }

.form-group {
    margin-bottom: 25px;
    position: relative;
}

label {
    display: block;
    margin-bottom: 10px;
    color: var(--text-grey);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.3px;
}

input[type="text"],
input[type="email"]{
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 15px;
    background: #f7fafc;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus{
    outline: none;
    border-color: var(--accent-orange); 
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(232, 144, 32, 0.1); 
    transform: translateY(-2px); 
}

.radio-group {
    display: flex;
    gap: 30px;
    margin-top: 8px;
    margin-bottom: 8px;
}

.radio-label {
    display: flex;
    align-items: center;
    font-size: 15px;
    cursor: pointer;
    position: relative;
    padding-left: 28px;
    color: var(--text-grey);
    font-weight: 500;
}

.radio-label input[type="radio"] {
    opacity: 0;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    margin: 0;
    cursor: pointer;
}

.custom-radio {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--primary-green);
    background: var(--white);
    transition: all 0.3s;
}

.radio-label input[type="radio"]:checked + .custom-radio {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
}

.custom-radio:after {
    content: "";
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--white);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.2s;
}

.radio-label input[type="radio"]:checked + .custom-radio:after {
    opacity: 1;
}

button[type="submit"], .btn-login {
    width: 100%;
    padding: 16px;
    background-color: var(--primary-green);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(26, 77, 78, 0.3);
    margin-top: 10px;
}

button[type="submit"]:hover, .btn-login:hover {
    background-color: var(--accent-orange); 
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(232, 144, 32, 0.4);
}

button:active {
    transform: translateY(-1px);
}

.error {
    color: var(--error-red);
    font-size: 13px;
    display: block;
    margin-top: 8px;
    font-weight: 500;
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.alert {
    background-color: #ffe6e6;
    color: var(--error-red);
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    border-left: 5px solid var(--error-red);
    font-weight: 500;
    box-shadow: 0 4px 10px rgba(229, 62, 62, 0.1);
}

p {
    margin-top: 25px;
    text-align: center;
    color: var(--text-grey);
    font-size: 14px;
    font-weight: 500;
}

a {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 700;
    transition: color 0.3s;
}

a:hover {
    color: var(--accent-orange);
    text-decoration: underline;
}

.btn-logout {
    display: inline-block;
    margin-top: 30px;
    padding: 12px 30px;
    background-color: var(--error-red);
    color: white;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(229, 62, 62, 0.3);
}

.btn-logout:hover {
    background-color: #b02318;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(229, 62, 62, 0.4);
    text-decoration: none;
}

@media (max-width: 480px) {
    .container {
        padding: 35px 25px;
    }
    h2 {
        font-size: 22px;
    }
}

.gsi-material-button {
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    -webkit-appearance: none;
    background-color: WHITE;
    background-image: none;
    border: 1px solid #747775;
    -webkit-border-radius: 4px;
    border-radius: 4px;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    color: #1f1f1f;
    cursor: pointer;
    font-family: 'Roboto', arial, sans-serif;
    font-size: 14px;
    height: 40px;
    letter-spacing: 0.25px;
    outline: none;
    overflow: hidden;
    padding: 0 12px;
    position: relative;
    text-align: center;
    -webkit-transition: background-color .218s, border-color .218s, box-shadow .218s;
    transition: background-color .218s, border-color .218s, box-shadow .218s;
    vertical-align: middle;
    white-space: nowrap;
    width: 100%;
    max-width: 400px;
    min-width: min-content;
}

.gsi-material-button .gsi-material-button-icon {
    height: 20px;
    margin-right: 12px;
    min-width: 20px;
    width: 20px;
}

.gsi-material-button .gsi-material-button-content-wrapper {
    -webkit-align-items: center;
    align-items: center;
    display: flex;
    -webkit-flex-direction: row;
    flex-direction: row;
    -webkit-flex-wrap: nowrap;
    flex-wrap: nowrap;
    height: 100%;
    justify-content: center;
    position: relative;
    width: 100%;
}

.gsi-material-button .gsi-material-button-contents {
    -webkit-flex-grow: 0;
    flex-grow: 0;
    font-family: 'Roboto', arial, sans-serif;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    vertical-align: top;
}

.gsi-material-button .gsi-material-button-state {
    -webkit-transition: opacity .218s;
    transition: opacity .218s;
    bottom: 0;
    left: 0;
    opacity: 0;
    position: absolute;
    right: 0;
    top: 0;
}

.gsi-material-button:not(:disabled):active .gsi-material-button-state, 
.gsi-material-button:not(:disabled):focus .gsi-material-button-state {
    background-color: #303030;
    opacity: 12%;
}

.gsi-material-button:not(:disabled):hover {
    -webkit-box-shadow: 0 1px 2px 0 rgba(60, 64, 67, .30), 0 1px 3px 1px rgba(60, 64, 67, .15);
    box-shadow: 0 1px 2px 0 rgba(60, 64, 67, .30), 0 1px 3px 1px rgba(60, 64, 67, .15);
}

.gsi-material-button:not(:disabled):hover .gsi-material-button-state {
    background-color: #303030;
    opacity: 8%;
}