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

body {
    background: #f5f7fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 15px;
}

.full-width-container {
    width: 100%;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    padding: 15px;
    margin: 0 auto;
}

.scheme-header {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #eaeaea;
}

.scheme-header h2 {
    color: #2c3e50;
    font-size: 1.2em;
    margin-bottom: 6px;
}

.scheme-header p {
    color: #7f8c8d;
    font-size: 0.85em;
}

/* Molekül görüntü alanı */
.molecule-image {
    width: 100%;
    height: 80px;
    margin: 0 auto 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 5px;
    padding: 8px;
    border: 1px solid #e2e8f0;
}

.molecule-image img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.molecule-info {
    font-size: 0.75em;
    color: #4a5568;
}

.molecule-name {
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 4px;
    font-size: 0.85em;
}

.molecule-formula {
    color: #718096;
    font-style: italic;
    font-size: 0.75em;
}

/* Kontrol paneli */
.control-panel {
    text-align: center;
    margin: 40px 0 15px;
    padding-top: 15px;
    border-top: 2px solid #e2e8f0;
}

.action-btn {
    padding: 10px 18px;
    margin: 6px;
    border: none;
    border-radius: 6px;
    font-size: 0.85em;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    min-width: 140px;
    max-width: 90%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.check-btn {
    background: linear-gradient(135deg, #48bb78, #38a169);
    color: white;
    box-shadow: 0 3px 8px rgba(72, 187, 120, 0.3);
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

/* Geri bildirim */
.feedback-container {
    margin: 20px auto;
    max-width: 100%;
    display: none;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Konfeti */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    display: none;
}

.confetti {
    position: absolute;
    width: 8px;
    height: 16px;
    opacity: 0;
}

/* Yön etiketleri */
.direction-label {
    position: absolute;
    font-size: 0.65em;
    font-weight: bold;
    padding: 3px 10px;
    border-radius: 12px;
    z-index: 10;
}

.start-label {
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: #2ecc71;
    color: white;
}

.target-label {
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: #e74c3c;
    color: white;
}

/* Animasyonlar */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-2px); }
    20%, 40%, 60%, 80% { transform: translateX(2px); }
}