/* ChatGPT Tarzı Sade ve İnce Tasarım */
body {
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    margin: 0;
    padding: 20px;
}

.login-container {
    background: #ffffff;
    border-radius: 8px;
    padding: 2.5rem;
    max-width: 400px;
    width: 100%;
    position: relative;
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo i {
    font-size: 2.5rem;
    color: #000000;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.logo h3 {
    color: #000000;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 1.5rem;
}

.logo p {
    color: #6b7280;
    font-size: 0.875rem;
    margin: 0;
}

/* Form Stilleri */
.form-label {
    color: #374151;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-control {
    border: 1px solid #d1d5db;
    border-radius: 6px;
    padding: 0.75rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background: #ffffff;
}

.form-control:focus {
    outline: none;
    border-color: #d1d5db;
    box-shadow: none;
}

.form-control::placeholder {
    color: #9ca3af;
}

.btn-primary {
    background: #000000;
    border: 1px solid #000000;
    border-radius: 6px;
    padding: 0.75rem;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    color: #ffffff;
}

.btn-primary:hover {
    background: #1f2937;
    border-color: #1f2937;
    transform: none;
    box-shadow: none;
}

.btn-primary:active {
    background: #111827;
    transform: translateY(1px);
}

/* Input Group Stilleri */
.input-group-text {
    background: #f9fafb;
    border: 1px solid #d1d5db;
    border-right: none;
    color: #6b7280;
    font-size: 0.875rem;
}

.input-group .form-control {
    border-left: none;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.input-group .form-control:focus {
    border-left: 1px solid #d1d5db;
    border-top-left-radius: 6px;
    border-bottom-left-radius: 6px;
}

.input-group .form-control:focus + .input-group-text {
    border-color: #d1d5db;
    background: #f9fafb;
}

/* Alert Stilleri */
.alert {
    border: 1px solid;
    border-radius: 6px;
    padding: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-danger {
    background: #fef2f2;
    border-color: #fecaca;
    color: #dc2626;
}

.alert-warning {
    background: #fffbeb;
    border-color: #fed7aa;
    color: #d97706;
}

.alert-success {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #16a34a;
    border-width: 1px;
}

.alert-success .btn-close {
    padding: 0.25rem;
    margin: -0.25rem -0.25rem -0.25rem auto;
}

.alert-success .btn-close-sm {
    font-size: 0.75rem;
}

.alert-success .fw-semibold {
    font-weight: 600;
    color: #15803d;
    margin-bottom: 0.25rem;
}

.alert-success .text-success-emphasis {
    color: #16a34a;
    opacity: 0.9;
}

.alert-dismissible .btn-close {
    padding: 0.75rem;
    margin: -0.75rem -0.75rem -0.75rem auto;
}

/* Alt Bilgiler */
.text-center {
    text-align: center;
}

.text-muted {
    color: #6b7280;
}

.text-muted small {
    font-size: 0.75rem;
    line-height: 1.4;
}

/* Link Stilleri */
.text-decoration-none {
    text-decoration: none;
}

.text-decoration-none:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 576px) {
    .login-container {
        margin: 0;
        padding: 2rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    
    body {
        padding: 0;
    }
}

/* Smooth Transitions */
* {
    transition: all 0.2s ease;
}