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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f0f2f5;
    color: #1a1a1a;
    overflow-x: hidden;
}

h1 {
    text-align: center;
    color: #1a73e8;
    margin-bottom: 30px;
    font-size: 2.2rem;
    font-weight: 600;
}

.info-section {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.info-text {
    background-color: #f8f9fa;
    border-left: 4px solid #1a73e8;
    padding: 12px 15px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: #5f6368;
    border-radius: 4px;
    line-height: 1.4;
}

.previous-info {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.info-input {
    flex: 1;
    min-width: 200px;
}

.info-input label {
    display: block;
    margin-bottom: 8px;
    color: #202124;
    font-weight: 500;
    font-size: 0.9rem;
}

.info-input input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #dadce0;
    border-radius: 4px;
    font-size: 0.95rem;
    transition: border-color 0.2s;
    background-color: #f8f9fa;
}

.info-input input:focus {
    outline: none;
    border-color: #1a73e8;
    background-color: #fff;
}

.course-input {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    flex-wrap: wrap;
    background-color: #fff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Sil butonu dışındaki tüm elementleri bir container'a alalım */
.course-input-fields {
    display: flex;
    flex: 1;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
}

/* Input ve select elementleri için genel stiller */
.course-input input,
.course-input select {
    flex: 1;
    min-width: 100px;
    padding: 10px;
    border: 1px solid #dadce0;
    border-radius: 4px;
    font-size: 14px;
}

.course-label {
    width: 80px;
    font-weight: 500;
}

.credit {
    min-width: 80px;
    max-width: 120px;
}

.grade, 
.course-type {
    min-width: 120px;
    max-width: 200px;
}

.old-grade-container {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 200px;
}

.old-grade {
    flex: 1;
    min-width: 120px;
}

.delete-btn {
    padding: 10px 20px;
    background-color: #dc3545;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    white-space: nowrap;
    margin-left: auto; /* Sil butonunu sağa yaslar */
}

.delete-btn:hover {
    background-color: #c82333;
}

input[type="number"], select {
    padding: 8px;
    border: 1px solid #dadce0;
    border-radius: 4px;
    font-size: 14px;
}

.buttons-container {
    margin: 20px 0;
    text-align: center;
    display: flex;
    gap: 15px;
    justify-content: center;
}

.buttons-container button {
    padding: 10px 20px;
    background-color: #1a73e8;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.buttons-container button:hover {
    background-color: #1557b0;
}

#result {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.result-info {
    background-color: #f8f9fa;
    border-left: 4px solid #1a73e8;
    padding: 12px 15px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: #5f6368;
    border-radius: 4px;
    line-height: 1.4;
}

.result-values p {
    margin: 12px 0;
    font-size: 1.1rem;
    color: #202124;
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #f0f2f5;
}

.result-values p:last-child {
    border-bottom: none;
}

/* Mobil cihazlar için medya sorguları */
@media screen and (max-width: 768px) {
    body {
        padding: 15px;
    }

    .course-input {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .course-input-fields {
        flex-direction: column;
        gap: 10px;
    }

    .course-input input,
    .course-input select {
        width: 100%;
        max-width: none;
    }

    .course-label {
        width: 100%;
    }

    .old-grade-container {
        width: 100%;
    }

    .delete-btn {
        margin-left: 0; /* Mobilde margin-left'i sıfırla */
    }

    .buttons-container {
        flex-direction: column;
        gap: 15px;
        margin: 25px 0;
    }

    .buttons-container button {
        width: 100%;
        padding: 12px 20px;
    }

    button {
        width: 100%;
    }

    .info-input {
        width: 100%;
    }

    .delete-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
}

/* Çok küçük ekranlar için ek düzenlemeler */
@media screen and (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }

    .info-section, .course-input, #result {
        padding: 15px;
    }

    .result-values p {
        flex-direction: column;
        gap: 5px;
    }
    
    .result-values p span:last-child {
        font-weight: 500;
        color: #1a73e8;
    }
}

/* Mobil cihazlar için responsive tasarım (ekran genişliği 768px'den küçük olduğunda) */
@media screen and (max-width: 768px) {
    .calculator {
        width: 90%;
        margin: 20px auto;
    }

    .display {
        width: 100%;
        font-size: 1.8rem;
    }

    .buttons {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 5px;
        padding: 10px;
    }

    button {
        padding: 15px;
        font-size: 1.2rem;
    }
}

/* Çok küçük ekranlar için ek düzenlemeler (ekran genişliği 480px'den küçük olduğunda) */
@media screen and (max-width: 480px) {
    .calculator {
        width: 95%;
        margin: 10px auto;
    }

    .display {
        font-size: 1.5rem;
    }

    button {
        padding: 10px;
        font-size: 1rem;
    }
}

/* Büyük ekranlar için düzenleme */
@media screen and (min-width: 1024px) {
    /* info-section grid düzenlemesini kaldırdık */
}