/* ============================================
   PROFESYONEL LOGIN SAYFASI TASARIMI
   ============================================ */

body.login-page {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Arka plan animasyon efekti */
body.login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: backgroundMove 20s linear infinite;
    pointer-events: none;
}

@keyframes backgroundMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* Login Container - Glassmorphism efekti */
.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 50px 50px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(255, 255, 255, 0.5);
    width: 100%;
    max-width: 800px;
    min-width: 400px;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.6s ease-out;
}

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

/* Login Header */
.login-header {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.login-header::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
}

.login-header h1 {
    color: #2c3e50;
    margin: 0 0 10px 0;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-header .subtitle {
    color: #6c757d;
    font-size: 14px;
    font-weight: 400;
    margin-top: 5px;
}

/* Form Groups */
.login-container .form-group {
    margin-bottom: 25px;
    position: relative;
}

.login-container .form-group label {
    display: block;
    margin-bottom: 10px;
    color: #495057;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.3px;
}

.login-container .form-group label::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin-right: 8px;
    border-radius: 2px;
    vertical-align: middle;
}

/* Form Controls */
.login-container .form-control {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #495057;
}

.login-container .form-control:focus {
    outline: none;
    border-color: #667eea;
    background-color: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1),
                0 4px 12px rgba(102, 126, 234, 0.15);
    transform: translateY(-1px);
}

.login-container .form-control::placeholder {
    color: #adb5bd;
    font-weight: 400;
}

/* Login Button */
.btn-login {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin-top: 15px;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.btn-login:hover::before {
    width: 300px;
    height: 300px;
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* Validation Messages */
.login-container .validator-error {
    color: #dc3545;
    font-size: 12px;
    margin-top: 6px;
    display: block;
    font-weight: 500;
    animation: shake 0.3s ease-in-out;
}

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

/* Messages */
.message {
    padding: 16px 20px;
    margin-bottom: 25px;
    border-radius: 10px;
    border-left: 4px solid;
    font-size: 14px;
    animation: slideDown 0.3s ease-out;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #28a745;
}

.message-error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #dc3545;
}

/* Responsive Design */

/* Tablet */
@media (max-width: 768px) {
    body.login-page {
        padding: 10px;
    }
    
    .login-container {
        padding: 40px 30px;
        max-width: calc(100% - 20px);
        min-width: auto;
        border-radius: 16px;
    }
}

/* Küçük telefonlar */
@media (max-width: 480px) {
    body.login-page {
        padding: 15px;
    }
    
    .login-container {
        padding: 35px 25px;
        margin: 0;
        max-width: 100%;
        min-width: auto;
        border-radius: 16px;
    }
    
    .login-header {
        margin-bottom: 35px;
    }
    
    .login-header h1 {
        font-size: 26px;
    }
    
    .login-header::after {
        width: 50px;
        height: 3px;
    }
    
    .login-container .form-group {
        margin-bottom: 22px;
    }
    
    .login-container .form-group label {
        font-size: 13px;
        margin-bottom: 8px;
    }
    
    .login-container .form-control {
        padding: 13px 16px;
        font-size: 14px;
        border-radius: 8px;
    }
    
    .btn-login {
        padding: 14px;
        font-size: 15px;
        border-radius: 8px;
        margin-top: 12px;
    }
    
    .message {
        padding: 14px 18px;
        font-size: 13px;
        border-radius: 8px;
    }
}

/* Çok küçük ekranlar */
@media (max-width: 360px) {
    body.login-page {
        padding: 10px;
    }
    
    .login-container {
        padding: 30px 18px;
        max-width: calc(100% - 20px);
        border-radius: 12px;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
    
    .login-header::after {
        width: 40px;
    }
    
    .login-container .form-control {
        padding: 12px 14px;
        font-size: 13px;
    }
    
    .btn-login {
        padding: 13px;
        font-size: 14px;
    }
}

/* Dark mode desteği (opsiyonel) */
@media (prefers-color-scheme: dark) {
    body.login-page {
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    }
    
    .login-container {
        background: rgba(30, 30, 46, 0.95);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
                    0 0 0 1px rgba(255, 255, 255, 0.1);
    }
    
    .login-header h1 {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    
    .login-container .form-group label {
        color: #e9ecef;
    }
    
    .login-container .form-control {
        background-color: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.1);
        color: #e9ecef;
    }
    
    .login-container .form-control:focus {
        background-color: rgba(255, 255, 255, 0.1);
        border-color: #667eea;
    }
}