/* ==========================================
   LEXA BİLİŞİM - TASARIM SİSTEMİ & TASARIM
   ========================================== */

/* Değişkenler ve Renk Paleti */
:root {
    --bg-base: #07080e;
    --bg-surface: rgba(15, 18, 36, 0.4);
    --bg-surface-hover: rgba(25, 30, 56, 0.6);
    --bg-card: rgba(13, 16, 32, 0.7);
    --border-color: rgba(255, 255, 255, 0.06);
    --border-color-hover: rgba(0, 242, 254, 0.3);
    
    /* Neon Renk Paleti */
    --color-primary: #00f2fe; /* Neon Mavi */
    --color-secondary: #9b51e0; /* Mor */
    --color-success: #00e676; /* Neon Yeşil */
    --color-warning: #ffb300;
    
    /* Metin Renkleri */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Fontlar ve Geçişler */
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
    --shadow-neon: 0 0 20px rgba(0, 242, 254, 0.15);
    --shadow-neon-strong: 0 0 30px rgba(0, 242, 254, 0.3);
    --shadow-modal: 0 20px 50px rgba(0, 0, 0, 0.5);
}

/* Temel Sıfırlamalar ve Yapı */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-base);
    color: var(--text-primary);
    overflow-x: hidden;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Arka Plan Neon Işımaları (Ambient Glows) */
.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.12;
    z-index: -1;
    pointer-events: none;
}

.bg-glow-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    animation: floatGlow 15s infinite alternate ease-in-out;
}

.bg-glow-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
    bottom: -150px;
    left: -150px;
    animation: floatGlow 20s infinite alternate-reverse ease-in-out;
}

.bg-glow-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    top: 50%;
    left: 40%;
    transform: translate(-50%, -50%);
    opacity: 0.05;
}

@keyframes floatGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 30px) scale(1.1); }
}

/* Header & Navigasyon */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    z-index: 100;
    display: flex;
    align-items: center;
    background: rgba(7, 8, 14, 0.6);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.header.scrolled {
    height: 70px;
    background: rgba(7, 8, 14, 0.85);
    border-bottom-color: rgba(0, 242, 254, 0.15);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 10px;
}

.logo-dot {
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-primary);
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--text-primary);
}

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

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    box-shadow: 0 0 8px var(--color-primary);
    transition: var(--transition-fast);
}

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

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

/* Buton Tasarımları */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-main);
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
    padding: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #000;
    font-weight: 700;
    box-shadow: var(--shadow-neon);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon-strong);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-icon {
    width: 18px;
    height: 18px;
    transition: transform 0.3s ease;
}

.btn-primary:hover .btn-icon {
    transform: translateY(2px);
}

/* Hero Section */
.hero-section {
    padding-top: 180px;
    padding-bottom: 100px;
    text-align: center;
    position: relative;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 242, 254, 0.06);
    border: 1px solid rgba(0, 242, 254, 0.15);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 28px;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.05);
}

.hero-tag-icon {
    width: 14px;
    height: 14px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 720px;
    margin: 0 auto 40px auto;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* Section Başlıkları */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Portfolio Section */
.portfolio-section {
    padding: 100px 0;
    border-top: 1px solid var(--border-color);
}

/* Filtreleme Butonları */
.filter-container {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 30px;
    font-family: var(--font-main);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.filter-btn svg {
    width: 16px;
    height: 16px;
}

.filter-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

.filter-btn.active {
    background: rgba(0, 242, 254, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
}

/* Projeler Izgarası (Projects Grid) */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 30px;
    min-height: 400px;
}

/* Proje Kartı (Project Card) */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s forwards ease-out;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-color-hover);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.06), 0 1px 3px rgba(0, 242, 254, 0.1);
}

.project-image-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
    background: #0f111e;
}

.project-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-image {
    transform: scale(1.08);
}

.project-card-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(7, 8, 14, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
}

.project-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
    transition: var(--transition-fast);
}

.project-card:hover .project-title {
    color: var(--color-primary);
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 20px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.project-tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.project-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.project-link-btn {
    background: none;
    border: none;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition-fast);
}

.project-link-btn svg {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
}

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

.project-link-btn:hover svg {
    transform: translateX(3px);
}

/* İletişim Bölümü (Contact Section) */
.contact-section {
    padding: 100px 0;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 50px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    backdrop-filter: blur(12px);
    overflow: hidden;
    position: relative;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(0, 242, 254, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.contact-title {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon-wrapper {
    width: 48px;
    height: 48px;
    background: rgba(0, 242, 254, 0.05);
    border: 1px solid rgba(0, 242, 254, 0.15);
    color: var(--color-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.05);
}

.contact-icon-wrapper svg {
    width: 20px;
    height: 20px;
}

.contact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    font-weight: 700;
}

.contact-value {
    font-size: 1.05rem;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

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

/* İletişim Formu (Contact Form) */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    background: #05060b;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.footer-right p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Modallar (Popup Details Modal) */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(4, 5, 8, 0.85);
    backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-base);
    border: 1px solid var(--border-color-hover);
    width: 100%;
    max-width: 900px;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-modal);
    transform: scale(0.95) translateY(20px);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition-fast);
}

.modal-close-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.modal-body {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    min-height: 480px;
}

.modal-image-wrapper {
    background: #0c0e18;
    position: relative;
    overflow: hidden;
}

.modal-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-info-wrapper {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.modal-project-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-top: 10px;
    margin-bottom: 16px;
}

.modal-project-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.tech-stack-container {
    margin-bottom: 30px;
}

.tech-stack-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.modal-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.modal-tech-list .project-tag {
    background: rgba(0, 242, 254, 0.05);
    border-color: rgba(0, 242, 254, 0.15);
    color: var(--color-primary);
    padding: 6px 12px;
}

.modal-actions {
    display: flex;
    gap: 12px;
}

/* Mobil / Tablet Duyarlılık Tasarımları (Responsive Layouts) */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .contact-card {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 35px;
    }

    .modal-body {
        grid-template-columns: 1fr;
    }
    
    .modal-image-wrapper {
        height: 250px;
    }
    
    .modal-info-wrapper {
        padding: 30px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* Mobil menü gerekirse geliştirilebilir, basit portfolyolar için alt/hero butonlar yeterlidir */
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .filter-container {
        gap: 8px;
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}