:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --border-color: #475569;
    --input-bg: #0f172a;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --ref-bg: #1e3a8a;
    --ref-border: #3b82f6;
    --warn-bg: #451a03;
    --warn-border: #b45309;
    --warn-text: #fde68a;
    --row-bg: rgba(255, 255, 255, 0.03);
}

[data-theme="light"] {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #cbd5e1;
    --input-bg: #f1f5f9;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --ref-bg: #eff6ff;
    --ref-border: #bfdbfe;
    --warn-bg: #fffbeb;
    --warn-border: #f59e0b;
    --warn-text: #78350f;
    --row-bg: #f8fafc;
}

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

body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    padding: 12px;
    transition: background-color 0.3s, color 0.3s;
    -webkit-tap-highlight-color: transparent;
}

.container {
    max-width: 800px; 
    margin: 0 auto;
}

.top-bar {
    max-width: 800px;
    margin: 0 auto 16px auto;
    display: flex;
    justify-content: flex-end;
}

.controls-group {
    display: flex;
    gap: 10px;
}

/* Yuvarlatılmış Hap (Pill) Buton Tasarımı */
.pill-btn {
    padding: 8px 18px;
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.pill-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.card { 
    background: var(--card-bg);
    border: 1px solid var(--border-color); 
    padding: 24px; 
    margin-bottom: 20px; 
    border-radius: 12px; 
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.hidden { display: none !important; }

h2 {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

h3 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: var(--primary-color);
}

p {
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.warning-box {
    background-color: var(--warn-bg);
    border: 1px solid var(--warn-border);
    color: var(--warn-text);
    padding: 12px 14px;
    border-radius: 8px;
    margin: 16px 0;
    font-size: 0.88rem;
}

.warning-box p { 
    margin: 4px 0 0 0; 
}

.reference-box {
    background-color: var(--ref-bg);
    border: 1px solid var(--ref-border);
    padding: 14px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.reference-box h4 {
    margin-bottom: 8px;
    font-size: 1rem;
}

/* Belirgin Açılır Menü (Dropdown) Kutuları */
.form-group { 
    margin-bottom: 20px; 
}

label { 
    display: block; 
    font-weight: 600; 
    margin-bottom: 8px; 
    font-size: 0.95rem;
}

.custom-select {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease-in-out;

    /* Özel Açılır Menü Oku (Mavi renkli SVG ok) */
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg fill='%233b82f6' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/></svg>");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 22px;
    padding-right: 44px;
    
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.custom-select:hover {
    border-color: var(--primary-color);
    background-color: rgba(59, 130, 246, 0.05);
}

.custom-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.custom-select option {
    background-color: var(--card-bg);
    color: var(--text-color);
    padding: 10px;
    font-weight: 500;
}

/* Stimuli Layout */
#stimuli-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.stimulus-row {
    display: grid;
    grid-template-columns: 100px 1fr 140px 45px;
    gap: 12px;
    align-items: center;
    background: var(--row-bg);
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.stimulus-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
}

.slider-container-mobile {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
}

audio { 
    width: 100%; 
    height: 40px; 
    border-radius: 6px;
}

input[type="range"] { 
    width: 100%; 
    height: 8px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

output {
    font-weight: 700;
    color: var(--primary-color);
    text-align: right;
    font-size: 1rem;
    min-width: 32px;
}

.scale-legend {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    margin-bottom: 16px;
}

.btn-primary { 
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 20px; 
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer; 
    transition: background-color 0.2s;
}

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

.action-area {
    margin-top: 24px;
}

/* MOBİL UYUMU (640px ve altı) */
@media (max-width: 640px) {
    body {
        padding: 8px;
    }

    .card {
        padding: 18px;
        border-radius: 10px;
    }

    .stimulus-row {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 14px;
    }

    .scale-legend {
        flex-direction: column;
        gap: 4px;
        font-size: 0.78rem;
    }
}