:root {
    --primary-color: #4F46E5;
    --primary-color-dark: #4338CA;
    --background-color: #F3F4F6;
    --card-background: #FFFFFF;
    --text-color: #1F2937;
    --text-color-secondary: #6B7280;
    --border-color: #D1D5DB;
    --success-color: #10B981;
    --warning-color: #F59E0B;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 1rem;
}

.container {
    width: 100%;
    max-width: 450px;
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

h1 {
    font-size: 1.75rem;
    color: var(--text-color);
}

header p {
    color: var(--text-color-secondary);
    margin-top: 0.25rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color-secondary);
}

input[type="number"] {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.note {
    font-size: 0.8rem;
    color: var(--text-color-secondary);
    margin-top: 0.5rem;
    line-height: 1.4;
}

button {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--primary-color-dark);
}

.advanced-options {
    margin-top: 1.5rem;
    text-align: center;
    color: var(--text-color-secondary);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.advanced-options input {
    width: 60px;
    text-align: center;
    padding: 0.4rem;
}

#result-container {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--background-color);
    border-radius: 12px;
    text-align: center;
}

#result-container.hidden {
    display: none;
}

#result-container p {
    color: var(--text-color-secondary);
    font-size: 1rem;
}

#total-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color); /* Ana rengi vurgulamak için değiştirildi */
    margin-top: 0.5rem;
}

/* AKSA Karşılaştırma Stilleri */
.aksa-comparison {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px dashed var(--border-color);
}

.aksa-comparison h3 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.aksa-comparison p {
    font-size: 0.9rem;
    color: var(--text-color-secondary);
    margin-bottom: 0.25rem;
}

.what-if-amount {
    font-size: 1.5rem !important;
    font-weight: 600;
    color: var(--success-color) !important;
    margin-bottom: 1rem !important;
}

.extra-cost {
    font-size: 1.5rem !important;
    font-weight: 600;
    color: var(--warning-color) !important;
}

/* Yükleme Butonu Stilleri */
.install-button {
    width: 100%;
    padding: 0.8rem 1rem;
    margin-bottom: 1.5rem; /* Form ile arasına boşluk koyar */
    background-color: #10B981; /* Yeşil, dikkat çekici bir renk */
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.2s;
    text-align: center;
}

.install-button:hover {
    background-color: #059669;
    transform: translateY(-2px);
}

/* Butonu gizlemek için yardımcı sınıf */
.hidden {
    display: none;
}