:root {
    --primary-color: #44556b;
    --secondary-color: #556a83;
    --accent-color: #ff6b6b;
    --background-color: #121212;
    --card-background: #232323;
    --card-gradient: linear-gradient(145deg, #1e1e1e, #2a2a2a);
    --text-color: #e0e0e0;
    --muted-text: #9e9e9e;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --box-shadow: 0 8px 28px rgba(0,0,0,0.4);
    --input-background: #2c2c2c;
    --input-border: #3d3d3d;
    --footer-background: #1a1a1a;
    --highlight-color: #2c3e50;
    --icon-glow: 0 0 10px rgba(255,107,107,0.5);
    --granite-light: #556a83;
    --granite-dark: #364757;
    --success-color: #4caf50;
}

body {
    background-color: var(--background-color);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cg fill-rule='evenodd'%3E%3Cg fill='%23232323' fill-opacity='0.4'%3E%3Cpath opacity='.5' d='M96 95h4v1h-4v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9zm-1 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm9-10v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm9-10v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm9-10v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9z'/%3E%3Cpath d='M6 5V0H5v5H0v1h5v94h1V6h94V5H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navbar Stili */
.navbar {
    background: linear-gradient(145deg, var(--granite-dark), var(--granite-light)) !important;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color) !important;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    display: inline-flex;
    align-items: center;
}

.navbar-brand i {
    font-size: 1.8rem;
    margin-right: 0.7rem;
    color: var(--accent-color);
    text-shadow: var(--icon-glow);
    transition: transform 0.3s ease;
}

.navbar-brand:hover i {
    transform: rotate(15deg) scale(1.1);
}

.nav-link {
    color: rgba(255,255,255,0.9) !important;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.6rem 1.2rem !important;
    border-radius: 8px;
    margin: 0 0.3rem;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
}

.nav-link i {
    margin-right: 0.5rem;
    font-size: 1.1rem;
    color: var(--accent-color);
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #fff !important;
    background-color: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

.nav-link:hover i {
    transform: scale(1.2);
    color: #fff;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Ana Kart Stili */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    background: var(--card-gradient);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, transparent, transparent, var(--accent-color), transparent, transparent);
    z-index: -1;
    border-radius: var(--border-radius-lg);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.card:hover {
    transform: translateY(-8px);
}

.card:hover::before {
    opacity: 0.3;
}

.card-header {
    background: linear-gradient(145deg, var(--granite-dark), var(--granite-light));
    color: var(--text-color);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
    padding: 1.8rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.card-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: headerShine 3s infinite;
}

@keyframes headerShine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.card-header h3 {
    margin: 0;
    font-weight: 700;
    font-size: 1.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-header h3 i {
    margin-right: 0.8rem;
    color: var(--accent-color);
    font-size: 2rem;
    text-shadow: var(--icon-glow);
    animation: pulse 3s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.card-body {
    padding: 2.5rem;
}

/* Form Elemanları */
.form-label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    letter-spacing: 0.5px;
}

.form-label i {
    margin-right: 0.8rem;
    color: var(--accent-color);
    font-size: 1.2rem;
    text-shadow: var(--icon-glow);
}

.form-control, .form-select {
    background-color: var(--input-background);
    border: 2px solid var(--input-border);
    border-radius: 10px;
    padding: 1rem 1.2rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    color: var(--text-color);
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.2);
}

.form-control:focus, .form-select:focus {
    background-color: var(--input-background);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.25rem rgba(255, 107, 107, 0.25), inset 0 2px 5px rgba(0,0,0,0.2);
    color: var(--text-color);
}

.form-control::placeholder {
    color: var(--muted-text);
    opacity: 0.6;
}

.form-text {
    color: var(--muted-text);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
}

.form-text i {
    margin-right: 0.5rem;
    color: var(--accent-color);
    font-size: 0.9rem;
}

/* Butonlar */
.btn {
    padding: 0.9rem 2.2rem;
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn i {
    margin-right: 0.7rem;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::after {
    width: 300%;
    height: 300%;
}

.btn-primary {
    background: linear-gradient(145deg, var(--granite-dark), var(--granite-light));
    border: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

.btn-primary:hover i {
    transform: rotate(10deg) scale(1.2);
    color: var(--accent-color);
}

.btn-success {
    background: linear-gradient(145deg, #3a9a3e, #55b259);
    border: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

.btn-success:hover i {
    transform: rotate(10deg) scale(1.2);
}

/* Makale İçeriği */
.article-content {
    background: var(--input-background);
    padding: 2.5rem;
    border-radius: 15px;
    margin: 2.5rem 0;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.3);
    position: relative;
    border-left: 4px solid var(--accent-color);
    max-height: 60vh;
    overflow-y: auto;
}

.article-content::before {
    content: """;
    position: absolute;
    top: -30px;
    left: 10px;
    font-size: 100px;
    color: var(--accent-color);
    opacity: 0.1;
    font-family: Georgia, serif;
}

/* Anahtar Kelimeler */
.keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.badge {
    padding: 0.8rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 25px;
    background: linear-gradient(145deg, var(--granite-dark), var(--granite-light));
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    box-shadow: 0 3px 6px rgba(0,0,0,0.2);
}

.badge i {
    margin-right: 0.5rem;
    color: var(--accent-color);
    font-size: 0.9rem;
}

.badge:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.badge:hover i {
    transform: rotate(10deg);
}

/* Uyarı Mesajları */
.alert {
    border-radius: 12px;
    padding: 1.2rem 1.5rem;
    margin-bottom: 2rem;
    border: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
}

.alert i {
    margin-right: 0.8rem;
    font-size: 1.3rem;
}

.alert-danger {
    background: linear-gradient(145deg, #c0392b, #e74c3c);
    color: white;
}

.alert-success {
    background: linear-gradient(145deg, #27ae60, #2ecc71);
    color: white;
}

/* Footer */
.footer {
    background-color: var(--footer-background) !important;
    color: var(--text-color);
    box-shadow: 0 -4px 15px rgba(0,0,0,0.2);
    margin-top: 5rem;
}

.footer .text-muted {
    color: var(--muted-text) !important;
    display: inline-flex;
    align-items: center;
}

.footer i {
    margin-right: 0.7rem;
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* Responsive Tasarım */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .card-header h3 {
        font-size: 1.5rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .article-content {
        padding: 1.5rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 1rem;
    }
    
    .navbar-brand i {
        font-size: 1.5rem;
    }
    
    .navbar-brand {
        font-size: 1.3rem;
    }
}

/* Animasyonlar */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.6s ease-out;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

/* Özel Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(145deg, var(--granite-dark), var(--granite-light));
    border-radius: 6px;
    border: 3px solid var(--background-color);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(145deg, var(--granite-light), var(--granite-dark));
}

/* Ön izleme Stili */
.preview-area {
    height: 100%;
}

.preview-placeholder {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.preview-placeholder .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.placeholder-icon {
    font-size: 4rem;
    color: var(--accent-color);
    opacity: 0.7;
    margin-bottom: 1rem;
    text-shadow: var(--icon-glow);
}

.preview-placeholder h4 {
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.preview-placeholder .text-muted {
    color: var(--muted-text) !important;
    font-size: 1.1rem;
    opacity: 0.9;
    line-height: 1.5;
}

.placeholder-content {
    max-width: 80%;
    text-align: center;
    background: rgba(0, 0, 0, 0.2);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.3);
    border-left: 4px solid var(--accent-color);
}

/* Scrollbar özelleştirilmesi */
.article-content {
    max-height: 60vh;
    overflow-y: auto;
}

@media (min-width: 992px) {
    .preview-area .card {
        position: sticky;
        top: 90px;
    }
}

/* Form ve Ön izleme için responsive düzenlemeler */
@media (max-width: 991px) {
    .position-sticky {
        position: relative !important;
        top: 0 !important;
    }
    
    .preview-area {
        margin-top: 2rem;
    }
}