/* --- Temel Stiller --- */
body {
    font-family: 'Inter', sans-serif;
    background-color: #f4f7f6;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
}

.container {
    background-color: #ffffff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 500px;
    text-align: center;
    box-sizing: border-box;
}

h1, h3 {
    color: #222;
    margin-top: 0;
}

#app-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 25px;
}

/* --- Google Giriş Butonu --- */
.g_id_signin {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

/* --- Kullanıcı Bilgileri --- */
.user-info-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 10px;
    background-color: #fafafa;
    border-radius: 8px;
}

#user-name {
    font-weight: 600;
    color: #444;
}

/* --- Form Stilleri --- */
.expense-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    text-align: left;
    padding: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 5px;
    color: #555;
}

.form-group input {
    padding: 12px 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 16px;
    font-family: 'Inter', sans-serif;
}

.form-group input:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0,123,255,0.1);
}

/* --- Buton Stilleri --- */
.button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    width: 100%;
    box-sizing: border-box;
}

.button-primary {
    background-color: #007bff;
    color: white;
}
.button-primary:hover {
    background-color: #0056b3;
}

.button-secondary {
    background-color: #f8f9fa;
    color: #dc3545;
    border: 1px solid #dc3545;
    width: auto;
    padding: 8px 15px;
    font-size: 14px;
}
.button-secondary:hover {
    background-color: #dc3545;
    color: white;
}

#authorize-button {
    margin-bottom: 20px;
}

/* --- Durum Mesajları --- */
.status-message {
    margin-top: 20px;
    padding: 12px;
    background-color: #e9ecef;
    border-radius: 8px;
    font-size: 15px;
    color: #333;
}

/* --- Yardımcı Sınıflar --- */
.hidden {
    display: none;
}