:root {
    --brand-color: #4F46E5;
    --brand-color-light: #EEF2FF;
    --text-dark: #111827;
    --text-light: #6B7280;
    --border-color: #D1D5DB;
    --background-light: #F9FAFB;
    --background-white: #FFFFFF;
    --success-color: #16A34A;
    --danger-color: #DC2626;
}

body.dark-mode {
    --text-dark: #F9FAFB;
    --text-light: #9CA3AF;
    --border-color: #374151;
    --background-light: #1F2937;
    --background-white: #111827;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    background-color: var(--background-white);
    color: var(--text-dark);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.2s, color 0.2s;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    max-width: 800px;
    margin: 0 auto 20px auto;
}
.header-left { display: flex; align-items: center; gap: 20px; }
.header-right { display: flex; align-items: center; gap: 15px; }
.logo { font-size: 28px; font-weight: 800; text-decoration: none; color: var(--text-dark); }
.logo span { color: var(--brand-color); }
#language-switcher { font-family: 'Inter', sans-serif; font-weight: 600; font-size: 16px; padding: 8px 12px; border-radius: 8px; border: 1px solid var(--border-color); background-color: var(--background-white); color: var(--text-dark); cursor: pointer; }
#theme-toggle { background: none; border: 1px solid var(--border-color); border-radius: 8px; width: 40px; height: 40px; cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--text-dark); }
#theme-toggle svg { width: 20px; height: 20px; }
.dark-mode #sun-icon { display: block; }
.dark-mode #moon-icon { display: none; }
#sun-icon { display: none; }
#moon-icon { display: block; }

main { flex-grow: 1; }
.hero { padding: 40px 0; text-align: center; }
.hero h1 { font-size: 42px; font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
.hero p { font-size: 18px; color: var(--text-light); margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }
#upload-area { border: 3px dashed var(--border-color); border-radius: 16px; padding: 40px 20px; background-color: var(--background-light); cursor: pointer; transition: border-color 0.2s, background-color 0.2s; text-align: center; max-width: 800px; margin: 0 auto; }
#upload-area.drag-over { border-color: var(--brand-color); background-color: var(--brand-color-light); }
#upload-area p { font-size: 20px; font-weight: 600; color: #374151; margin: 16px 0; }
body.dark-mode #upload-area p { color: var(--text-dark); }
#upload-button { background-color: var(--brand-color); color: white; padding: 12px 24px; border: none; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; transition: background-color 0.2s; }
#upload-button:hover { background-color: #4338CA; }

/* --- İŞLEME EKRANI --- */
.hidden { display: none !important; }
#processing-screen { display: block; }
.processing-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 30px; align-items: flex-start; }
.image-list-column { min-width: 0; }
.settings-column { position: sticky; top: 20px; }
#results-area { margin-top: 0; }
#add-more-files-area { border: 2px dashed var(--border-color); border-radius: 12px; padding: 20px; margin-top: 15px; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s ease; color: var(--text-light); }
#add-more-files-area:hover { border-color: var(--brand-color); color: var(--brand-color); }
#add-more-files-area span { margin-left: 8px; font-weight: 600; }

/* AYAR PANELİ */
.batch-controls { background-color: var(--background-light); padding: 20px; border-radius: 12px; text-align: left; }
.controls-section { padding-bottom: 15px; border-bottom: 1px solid var(--border-color); }
.controls-section:last-of-type { border-bottom: none; }
.controls-section h3 { font-size: 16px; margin: 0; font-weight: 600; }
.control-item { display: flex; flex-direction: column; gap: 8px; margin-top: 15px; }
.control-item label, .control-item-inline span { font-weight: 500; font-size: 14px; color: var(--text-light); }
.control-item input, .control-item select { width: 100%; box-sizing: border-box; padding: 8px; border-radius: 6px; border: 1px solid var(--border-color); background-color: var(--background-white); color: var(--text-dark); }
.control-item input[type="color"] { padding: 2px; height: 38px; }
.control-item-group { display: flex; gap: 15px; }
.control-item-inline { display: flex; align-items: center; gap: 10px; flex-grow: 1; }

/* AKORDİYON & KİLİT BUTONU */
.settings-accordion { padding: 15px 0; border-bottom: 1px solid var(--border-color); }
.settings-accordion summary { cursor: pointer; list-style: none; }
.settings-accordion summary::-webkit-details-marker { display: none; }
.settings-accordion summary:hover h3 { color: var(--brand-color); }
.accordion-content { padding-top: 15px; }
.resize-inputs-wrapper { display: flex; align-items: flex-end; gap: 10px; }
.resize-inputs-wrapper .control-item { margin-top: 0; flex-grow: 1; }
#aspect-ratio-lock { background: none; border: none; padding: 5px; margin-bottom: 8px; cursor: pointer; color: var(--text-light); }
#aspect-ratio-lock.active { color: var(--brand-color); }
#aspect-ratio-lock .unlock-icon { display: none; }
#aspect-ratio-lock .lock-icon { display: block; }
#aspect-ratio-lock.active .unlock-icon { display: block; }
#aspect-ratio-lock.active .lock-icon { display: none; }
#aspect-ratio-lock svg { width: 24px; height: 24px; }

/* KALİTE SLIDER */
.quality-header, .quality-footer { display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: var(--text-light); }
.quality-header { margin-bottom: 10px; }
.quality-footer { margin-top: 5px; }
.quality-header #quality-label { font-weight: 600; font-size: 18px; color: var(--text-dark); }
#quality-value { font-weight: 600; font-size: 16px; background-color: var(--brand-color-light); color: var(--brand-color); padding: 4px 8px; border-radius: 6px; }
input[type="range"] { -webkit-appearance: none; background: transparent; width: 100%; margin: 0; }
input[type="range"]::-webkit-slider-runnable-track { width: 100%; height: 8px; cursor: pointer; background: var(--border-color); border-radius: 4px; }
input[type="range"]::-webkit-slider-thumb { height: 20px; width: 20px; border-radius: 50%; background: var(--brand-color); cursor: pointer; -webkit-appearance: none; margin-top: -6px; }

/* ANA KONTROL BUTONLARI */
.controls-main { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
.controls-main button { width: 100%; padding: 12px; border: none; border-radius: 8px; font-size: 16px; font-weight: 700; cursor: pointer; transition: background-color 0.2s; }
#download-all-button { background-color: var(--success-color); color: white; order: 1; }
#download-all-button:hover { background-color: #15803D; }
#download-all-button:disabled { background-color: #9CA3AF; cursor: not-allowed; }
#start-over-button { background: none; border: 1px solid var(--danger-color); color: var(--danger-color); order: 2; }

/* GÖRSEL KARTI */
.result-card { display: grid; grid-template-columns: 80px 1fr auto; align-items: center; gap: 15px; background-color: var(--background-white); border: 1px solid var(--border-color); border-radius: 12px; padding: 15px; margin-bottom: 15px; transition: box-shadow .2s; }
.result-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
body.dark-mode .result-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.result-card-thumb-wrapper { width: 80px; height: 80px; position: relative; border-radius: 8px; overflow: hidden; background-color: var(--background-light); }
.result-card-thumb { width: 100%; height: 100%; object-fit: contain; }
.result-card-info p { margin: 2px 0; }
.result-card-name { font-weight: 600; word-break: break-all; }
.result-card-size { font-size: 14px; color: var(--text-light); }
.result-card-size .new-size { color: var(--success-color); font-weight: bold; }
.result-card-size .size-saving { margin-left: 8px; font-weight: bold; color: var(--success-color); background-color: #F0FDF4; padding: 2px 6px; border-radius: 4px; font-size: 12px; }
body.dark-mode .result-card-size .size-saving { background-color: #166534; color: #DCFCE7; }
.result-card-actions { display: flex; align-items: center; gap: 5px; flex-wrap: nowrap; }
.result-card-actions .download-button { background-color: var(--brand-color); color: white; }
.result-card-action { width: 36px; height: 36px; border: 1px solid var(--border-color); background-color: var(--background-white); color: var(--text-light); border-radius: 8px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all .2s; }
.result-card-action:hover { color: var(--brand-color); border-color: var(--brand-color); }
.result-card-action svg { width: 20px; height: 20px; }
.result-card-action.loading { animation: spin 1s linear infinite; }
@keyframes spin { 100% { transform: rotate(360deg); } }

/* MOBİL GÖRÜNÜM */
@media (max-width: 800px) {
    .processing-grid { grid-template-columns: 1fr; }
    .settings-column { position: static; top: 0; }
    .container { padding: 10px; }
    header { margin-bottom: 10px; }
    .hero h1 { font-size: 32px; }
}

/* DİĞER BÖLÜMLER */
.content-section { text-align: left; margin-top: 80px; padding-top: 40px; border-top: 1px solid var(--border-color); max-width: 800px; margin-left: auto; margin-right: auto; }
.content-section h2 { text-align: center; font-size: 32px; margin-bottom: 40px; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.feature-item { background-color: var(--background-light); padding: 25px; border-radius: 12px; }
.feature-item svg { width: 48px; height: 48px; color: var(--brand-color); margin-bottom: 15px; }
.feature-item h3 { margin-top: 0; font-size: 20px; }
.feature-item p { color: var(--text-light); line-height: 1.6; }
.faq-item { margin-bottom: 20px; }
.faq-item h3 { margin: 0; font-size: 18px; }
.faq-item p { margin-top: 5px; color: var(--text-light); line-height: 1.6; }
footer { text-align: center; padding: 20px; margin-top: 40px; background-color: var(--background-light); font-size: 14px; color: var(--text-light); }
footer a { color: var(--text-light); text-decoration: none; font-weight: 500; }
footer a:hover { color: var(--text-dark); }

/* MODAL PENCERELER */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.7); display: none; justify-content: center; align-items: center; z-index: 1000; }
.modal-content { background-color: var(--background-white); padding: 30px; border-radius: 12px; max-width: 90vw; max-height: 90vh; overflow: auto; position: relative; text-align: left; }
.modal-close { position: absolute; top: 15px; right: 15px; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-light); }
.modal-content h2 { margin-top: 0; }
#cropper-container { max-width: 80vw; max-height: 70vh; }
#cropper-container img { max-width: 100%; max-height: 70vh; }
#cropper-save-button { background-color: var(--brand-color); color: white; padding: 12px 24px; border: none; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; margin-top: 20px; }

/* === MOBİL KART GÖRÜNÜMÜ İYİLEŞTİRMESİ === */

@media (max-width: 500px) {
    .result-card {
        /* Kartın grid yapısını mobil için yeniden düzenliyoruz */
        grid-template-columns: 80px 1fr; /* Sol: Resim, Sağ: Metin */
        grid-template-rows: auto auto;    /* Üst ve Alt olmak üzere iki satır */
        grid-template-areas: 
            "thumb info"
            "actions actions"; /* Butonlar en altta tam genişlikte yer alacak */
        row-gap: 15px; /* Satırlar arasına boşluk ekliyoruz */
        padding: 12px;
    }

    .result-card-thumb-wrapper {
        grid-area: thumb; /* Grid alanını atıyoruz */
        width: 80px;
        height: 80px;
    }

    .result-card-info {
        grid-area: info; /* Grid alanını atıyoruz */
    }

    .result-card-actions {
        grid-area: actions; /* Grid alanını atıyoruz */
        
        /* Butonların tamamını sola yaslayıp, sığmazsa alt satıra atmasını sağlıyoruz */
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 8px; /* Butonlar arasına daha fazla boşluk */
        padding-top: 10px;
        border-top: 1px solid var(--border-color);
        margin-top: 5px;
    }
}