/* Genel stil */
:root {
    --primary: #FF8A00;
    --primary-hover: #cc3300;
    --background: #F4F7FC;
    --surface: #FFFFFF;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --border: #E2E8F0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --radius-lg: 12px;
    --radius-md: 8px;
    --danger: #EF4444;
}

body {
    background: linear-gradient(to bottom, #e3f2fd, #f4f7fc);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-primary);
}

/* Login kutusu */
.login-container {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

    /* Logo */
    .login-container .logo {
        width: 80px;
        height: auto;
        margin-bottom: 1rem;
    }

    /* Başlık */
    .login-container h2 {
        margin-bottom: 1rem;
        color: var(--primary);
        font-size: 1.5rem;
        font-weight: bold;
    }

    /* Input alanları */
    .login-container .form-control {
        width: 100%;
        padding: 0.75rem;
        margin: 0.75rem 0;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        font-size: 1rem;
        color: var(--text-primary);
    }

        .login-container .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
            outline: none;
        }

    /* Button */
    .login-container .btn {
        background-color: var(--primary);
        color: white;
        border: none;
        padding: 0.75rem;
        font-size: 1rem;
        font-weight: bold;
        border-radius: var(--radius-md);
        cursor: pointer;
        transition: all 0.3s ease;
        width: 100%;
        margin-top: 1rem;
    }

        .login-container .btn:hover {
            background-color: var(--primary-hover);
        }

/* Hata mesajı */
.alert-danger {
    color: white;
    background-color: var(--danger);
    border: none;
    border-radius: var(--radius-md);
    padding: 0.75rem;
    margin-top: 1rem;
    font-size: 0.9rem;
    font-weight: bold;
}