/* CSS Reset ve Temel Ayarlar */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Renk Değişkenleri */
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Animasyon */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Açık Tema */
body.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

/* Tema Değiştirici Buton */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 1001;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow);
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
    color: var(--text-primary);
    transition: var(--transition);
}

.theme-toggle .sun-icon {
    display: none;
}

body.light-theme .theme-toggle .sun-icon {
    display: block;
}

body.light-theme .theme-toggle .moon-icon {
    display: none;
}

/* Tema geçişlerinde yumuşak animasyon */
body {
    transition: background-color 0.3s ease, color 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
}

/* Container */
.container {
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
}

.form-wrapper {
    background-color: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

/* Başlık */
.main-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.main-title .icon {
    color: var(--primary-color);
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 16px;
}

/* Form Elemanları */
.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-primary);
}

.char-count {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 400;
}

.form-textarea {
    width: 100%;
    min-height: 200px;
    padding: 16px;
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
    transition: var(--transition);
    white-space: pre;
    overflow-x: auto;
    overflow-y: auto;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.form-hint {
    display: flex;
    align-items: start;
    gap: 8px;
    margin-top: 8px;
    padding: 12px;
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.form-hint svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--primary-color);
}

/* Buton */
.submit-button {
    width: 100%;
    padding: 16px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.submit-button:hover:not(:disabled) {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(59, 130, 246, 0.3);
}

.submit-button:active:not(:disabled) {
    transform: translateY(0);
}

.submit-button:disabled,
.submit-button.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.button-icon {
    width: 20px;
    height: 20px;
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Özellikler */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.feature svg {
    color: var(--primary-color);
    flex-shrink: 0;
}

/* Sonuç Sayfası Stilleri */
#results {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    margin: 24px 0;
    max-height: 400px;
    overflow-y: auto;
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 14px;
    line-height: 1.8;
    border: 1px solid var(--border-color);
}

#results div {
    padding: 8px 12px;
    margin: 4px 0;
    background-color: var(--bg-primary);
    border-radius: 6px;
    transition: var(--transition);
}

#results div:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

#copyButton {
    position: fixed;
    top: 20px;
    right: 80px;
    padding: 12px 24px;
    background-color: var(--success-color);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    box-shadow: var(--shadow);
    z-index: 1000;
}

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

.link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin: 0 auto;
    padding: 12px 24px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Mobil Uyumluluk */
@media (max-width: 640px) {
    .form-wrapper {
        padding: 24px;
    }
    
    .main-title {
        font-size: 24px;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    #copyButton {
        top: auto;
        bottom: 20px;
        right: 80px;
    }
    
    .theme-toggle {
        top: auto;
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
    
    .theme-toggle svg {
        width: 20px;
        height: 20px;
    }
}

/* Scroll Bar Özelleştirme */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Animasyonlar */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-wrapper {
    animation: fadeIn 0.5s ease-out;
}