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

body {
    font-family: Arial, sans-serif;
    background: #fff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0088c1 url('https://posta.atauni.edu.tr/img/new-back-ground-image.png' ) 0 0 / cover no-repeat;
    
    background-size: 100% auto;
}

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

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

.logo {
    display: block;
    margin: 0 auto 20px;
    max-width: 120px;
}

h2 {
    text-align: left;
    margin-bottom: 15px;
    color: #444;
    font-size: 24px;
    font-weight: normal;
}

.info-text {
    background: #fff3cd;
    border: 1px solid #ffeeba;
}

.error-text {
    background: #e8b4b8;
    border: 1px solid #b10615;
}
.success-text {
    background: #e3fcd9;
    border: 1px solid #aacba8;
}
.mesaj{
    padding: 12px;
    margin-bottom: 20px;
    color: #444;
    font-size: 14px;
    display: none;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    color: #666;
    font-size: 14px;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ced4da;
    border-radius: 0;
    font-size: 14px;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}

.password-field {
    position: relative;
}

.goster-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #2196F3;
    cursor: pointer;
    font-size: 13px;
}

.login-btn {
    width: 100%;
    padding: 10px;
    background: #0088c1;
    color: white;
    border: none;
    border-radius: 0;
    font-size: 16px;
    cursor: pointer;
    margin-bottom: 15px;
}

.login-btn:hover {
    background: #006a93;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: 10px;
}

.remember-me input[type="checkbox"] {
    margin: 0;
}

.remember-me label {
    margin: 0;
    font-size: 14px;
    color: #666;
}

.version-select {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.version-select label {
    display: block;
    margin-bottom: 5px;
}

.version-select select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 0;
    font-size: 14px;
    color: #444;
    background: white;
}

footer {
    bottom: 10px;
    left: 0;
    position: absolute;
    text-align: center;
    width: 100%;
    z-index: 10;
}

footer a {
    color: white;
    
    text-decoration: none;
    font-size: 13px;
    opacity: 0.9;
}

footer a:hover {
    text-decoration: underline;
}

/* Yardım ikonu */
.help-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    background: #666;
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 16px;
    font-size: 12px;
    margin-left: 5px;
    cursor: help;
} 
input[type="text"],
input[type="email"],
input[type="tel"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ced4da;
    border-radius: 0;
    font-size: 14px;
    height: 40px;
    box-sizing: border-box;
}

input.valid {
    border-color: #28a745 !important;
    background-color: #f8fff8;
}

input.invalid {
    border-color: #dc3545 !important;
    background-color: #fff8f8;
}

.error-message {
    color: #dc3545;
    font-size: 12px;
    margin-top: 4px;
    display: none;
}

.error-message.show {
    display: block;
}
.error-message-sms {
    color: #dc3545;
    font-size: 12px;
    margin-top: 4px;
    display: none;
}

.error-message-sms.show {
    display: block;
}
.success-message-sms {
    color: #29a111;
    font-size: 12px;
    margin-top: 4px;
    display: none;
}

.success-message-sms.show {
    display: block;
}
.mesaj.show {
    display: block;
}

 /* Input focus stilleri */
 input[type="text"]:focus,
 input[type="email"]:focus,
 input[type="tel"]:focus {
     outline: none;
     border-color: #80bdff;
     box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
 }