/* Tasarım Sistemi ve Değişkenler */
:root {
    --bg-dark: #070913;
    --bg-card: rgba(17, 20, 38, 0.65);
    --bg-navbar: rgba(7, 9, 19, 0.75);
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.15);
    --secondary: #a855f7;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.08);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

/* Sıfırlama (Reset) */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-dark);
    overflow-x: hidden;
}

body {
    position: relative;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Arka Plan Glow Efektleri */
.glow-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.glowing-sphere {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    mix-blend-mode: screen;
}

.sphere-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -50px;
    right: 5%;
    animation: float1 20s infinite ease-in-out alternate;
}

.sphere-2 {
    width: 350px;
    height: 350px;
    background: var(--secondary);
    top: 30%;
    left: -50px;
    animation: float2 25s infinite ease-in-out alternate;
}

.sphere-3 {
    width: 300px;
    height: 300px;
    background: #ec4899;
    bottom: 10%;
    right: 10%;
    animation: float1 18s infinite ease-in-out alternate-reverse;
}

@keyframes float1 {
    0% { transform: translateY(0px) scale(1); }
    100% { transform: translateY(50px) scale(1.1); }
}

@keyframes float2 {
    0% { transform: translate(0px, 0px) scale(1); }
    100% { transform: translate(60px, -40px) scale(1.05); }
}

/* Navigasyon Barı (Glassmorphism) */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--bg-navbar);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    padding: 0.25rem 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.btn-contact-nav {
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    border: 1px solid var(--primary);
    background: var(--primary-glow);
    color: var(--text-primary);
    font-weight: 600;
}

.btn-contact-nav:hover {
    background: var(--primary);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

/* Mobil Menü */
.mobile-menu {
    display: none;
    position: fixed;
    top: 75px;
    left: 0;
    right: 0;
    background: rgba(7, 9, 19, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 2rem;
    flex-direction: column;
    gap: 1.5rem;
    z-index: 999;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

.mobile-menu.active {
    display: flex;
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.mobile-link {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Ortak Bölüm Tasarımları */
section {
    padding: 8rem 2rem 4rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--primary);
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Butonlar */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    min-height: 85vh;
}

.hero-content {
    flex: 1.2;
}

.badge {
    background: var(--primary-glow);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

.hero-visual {
    flex: 0.8;
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.circle {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.circle.red { background: #ef4444; }
.circle.yellow { background: #f59e0b; }
.circle.green { background: #10b981; }

.card-body pre {
    font-family: monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.keyword { color: #f472b6; }
.string { color: #34d399; }

/* Hakkımda (About) Section */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
}

.about-text-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-text-card p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 1.5rem;
}

.stat-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.skills-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

.skills-card h3 {
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.skill-item {
    margin-bottom: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    font-weight: 600;
}

.skill-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 10px;
    width: 0%;
    transition: width 1.5s cubic-bezier(0.1, 0.8, 0.2, 1);
}

/* Projeler (Projects) Section */
.filter-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.1);
}

.project-img-placeholder {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.project-details {
    padding: 1.5rem;
}

.project-cat {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
}

.project-details h3 {
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

.project-details p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

.project-link {
    color: var(--text-primary);
    font-weight: 600;
    display: inline-block;
    transition: var(--transition);
}

.project-link:hover {
    color: var(--primary);
    padding-left: 5px;
}

/* Kariyer (Resume/Timeline) Section */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 50px;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 11px;
    top: 8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 4px solid var(--primary);
    box-shadow: 0 0 10px var(--primary);
}

.timeline-date {
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* İletişim (Contact) Section */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.contact-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-list svg {
    color: var(--primary);
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: white;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

.form-feedback {
    margin-top: 1rem;
    font-size: 0.9rem;
    text-align: center;
    font-weight: 600;
}

.form-feedback.success {
    color: #10b981;
}

.form-feedback.error {
    color: #ef4444;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
    background: #04050a;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary);
}

/* Responsive Düzenler */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
        padding-top: 6rem;
    }
    .hero-actions {
        justify-content: center;
    }
    .about-grid, .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .hero-visual {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .menu-toggle {
        display: block;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .section-title {
        font-size: 2rem;
    }
    .timeline::before {
        left: 10px;
    }
    .timeline-dot {
        left: 1px;
    }
    .timeline-item {
        padding-left: 30px;
    }
}


/* ==========================================================================
   Yönetici Paneli (Admin Modal & Dashboard) Stilleri
   ========================================================================== */
.admin-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(4, 5, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.admin-modal.show {
    display: flex;
    opacity: 1;
}

.admin-modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    position: relative;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    max-height: 90vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
    transform: scale(0.9);
}

.admin-modal.show .admin-modal-content {
    transform: scale(1);
}

.login-content {
    width: 100%;
    max-width: 400px;
}

.dashboard-content {
    width: 100%;
    max-width: 900px;
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--text-primary);
}

.admin-modal h3 {
    margin-bottom: 1rem;
    font-size: 1.6rem;
}

.admin-modal p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* Dashboard Tablo Tasarımı */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}

.dashboard-actions {
    display: flex;
    gap: 1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    border-radius: 6px;
}

.btn-danger {
    background: #ef4444;
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
}

.messages-table-container {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.01);
}

.messages-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

.messages-table th, .messages-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.messages-table th {
    background: rgba(255, 255, 255, 0.03);
    font-weight: 600;
    color: var(--text-primary);
}

.messages-table td {
    color: var(--text-secondary);
}

.messages-table tr:last-child td {
    border-bottom: none;
}

.messages-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.no-messages {
    display: none;
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-style: italic;
}

.btn-delete-msg {
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #ef4444;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-delete-msg:hover {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

/* Scrollbar özelleştirme */
.admin-modal-content::-webkit-scrollbar {
    width: 8px;
}
.admin-modal-content::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.01);
}
.admin-modal-content::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
}