/* ==========================================================================
   DESIGN SYSTEM - CSS VARIABLES
   ========================================================================== */
:root {
    /* Font Tanımları */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-logo: 'Dancing Script', cursive;

    /* Geçiş Efektleri */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    /* Kenar Yuvarlama */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    /* Gölgelendirme */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Tema Renk Değişkenleri (Default Dark Mode) */
body.dark-mode {
    --bg-primary: #06040d;
    --bg-secondary: #0d0a18;
    --bg-tertiary: #151026;
    --bg-glass: rgba(6, 4, 13, 0.75);
    --border-color: rgba(139, 92, 246, 0.15);
    --border-focus: rgba(236, 72, 153, 0.45);
    
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-muted: #6e6e73;
    
    --accent-primary: #6366f1; /* İndigo */
    --accent-secondary: #ec4899; /* Neon Pembe */
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
    --accent-glow: rgba(99, 102, 241, 0.3);
    
    --card-hover-bg: rgba(255, 255, 255, 0.03);
    --modal-bg: #0a0715;
}

/* Light Mode Renk Değişkenleri */
body.light-mode {
    --bg-primary: #fbfbfd;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f5f7;
    --bg-glass: rgba(251, 251, 253, 0.8);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-focus: rgba(0, 0, 0, 0.2);
    
    --text-primary: #1d1d1f;
    --text-secondary: #515154;
    --text-muted: #86868b;
    
    --accent-primary: #4f46e5;
    --accent-secondary: #db2777;
    --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #db2777 100%);
    --accent-glow: rgba(79, 70, 229, 0.15);
    
    --card-hover-bg: rgba(0, 0, 0, 0.02);
    --modal-bg: #f5f5f7;
}

/* ==========================================================================
   SIFIRLAMA & GENEL STİLLER
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    transition: background-color var(--transition-medium), color var(--transition-medium);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    outline: none;
}

/* Özel Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border: 2px solid var(--bg-primary);
}

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

/* ==========================================================================
   ÖZEL İMLEÇ (CUSTOM CURSOR)
   ========================================================================== */
@media (hover: hover) {
    .custom-cursor {
        width: 40px;
        height: 40px;
        border: 2px solid var(--accent-primary);
        border-radius: 50%;
        position: fixed;
        transform: translate(-50%, -50%);
        pointer-events: none;
        z-index: 9999;
        transition: width var(--transition-fast), height var(--transition-fast), border-color var(--transition-fast);
        left: -100px;
        top: -100px;
    }

    .custom-cursor-dot {
        width: 8px;
        height: 8px;
        background-color: var(--accent-secondary);
        border-radius: 50%;
        position: fixed;
        transform: translate(-50%, -50%);
        pointer-events: none;
        z-index: 9999;
        left: -100px;
        top: -100px;
    }

    .custom-cursor.hovered {
        width: 60px;
        height: 60px;
        background-color: rgba(99, 102, 241, 0.1);
        border-color: var(--accent-secondary);
    }
    
    .custom-cursor-dot.hovered {
        background-color: var(--accent-primary);
        transform: translate(-50%, -50%) scale(1.5);
    }
}

@media (hover: none) {
    .custom-cursor, .custom-cursor-dot {
        display: none;
    }
}

/* ==========================================================================
   ANİMASYONLAR
   ========================================================================== */
@keyframes float {
    0% { transform: translateY(0px) rotate(3deg); }
    50% { transform: translateY(-15px) rotate(5deg); }
    100% { transform: translateY(0px) rotate(3deg); }
}

@keyframes pulse-glow {
    0% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.05); opacity: 0.5; }
    100% { transform: scale(1); opacity: 0.3; }
}

@keyframes tech-pulse {
    0% {
        opacity: 0.45;
        text-shadow: 0 0 4px rgba(99, 102, 241, 0.2);
    }
    50% {
        opacity: 1;
        text-shadow: 0 0 15px rgba(99, 102, 241, 0.8), 0 0 30px rgba(236, 72, 153, 0.5);
    }
    100% {
        opacity: 0.45;
        text-shadow: 0 0 4px rgba(99, 102, 241, 0.2);
    }
}

.pulse-text {
    animation: tech-pulse 1.8s infinite ease-in-out;
}

.highlight-tech {
    color: var(--accent-primary);
    font-weight: 600;
    transition: color var(--transition-medium);
}

body.light-mode .highlight-tech {
    color: #4f46e5;
}

.highlight-tech-sec {
    color: var(--accent-secondary);
    font-weight: 600;
    transition: color var(--transition-medium);
}

body.light-mode .highlight-tech-sec {
    color: #db2777;
}

/* ==========================================================================
   MODERN BUTONLAR
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-focus);
}

/* ==========================================================================
   DİNAMİK NAVBAR (GLASSMORPHISM)
   ========================================================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--accent-gradient);
    z-index: 1001;
    width: 0%;
    transition: width 0.1s ease-out;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--bg-glass);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-medium), border-color var(--transition-medium);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* El Yazısı Cursive Logo */
.nav-logo {
    font-family: var(--font-logo);
    font-weight: 700;
    font-size: 2.2rem;
    letter-spacing: 0px;
    display: flex;
    align-items: center;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform var(--transition-fast);
}

.nav-logo:hover {
    transform: scale(1.03);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-medium);
}

.nav-link:hover::after, .nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--border-focus);
    background-color: var(--bg-tertiary);
}

body.dark-mode .icon-sun,
body.light-mode .icon-moon {
    display: none;
}

body.dark-mode .icon-moon {
    color: #f1c40f;
}

body.light-mode .icon-sun {
    color: #e67e22;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 30px;
    z-index: 1002;
}

.menu-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: var(--radius-sm);
    transition: transform var(--transition-medium), opacity var(--transition-medium);
}

/* ==========================================================================
   GİRİŞ BÖLÜMÜ / HERO SECTION
   ========================================================================== */
.hero-section {
    min-height: 100vh;
    padding-top: 120px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-bg-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: -1;
}

.hero-bg-shapes .shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    mix-blend-mode: screen;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background-color: var(--accent-primary);
    top: 10%;
    right: 5%;
    animation: pulse-glow 8s infinite alternate;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background-color: var(--accent-secondary);
    bottom: 10%;
    left: 10%;
    animation: pulse-glow 6s infinite alternate-reverse;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
    width: 100%;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 2px;
    color: var(--accent-primary);
    margin-bottom: 16px;
    display: inline-block;
}

.hero-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 4rem;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-showcase {
    display: flex;
    justify-content: center;
}

.showcase-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-lg);
    max-width: 360px;
    width: 100%;
    transform: rotate(3deg);
    animation: float 6s ease-in-out infinite;
    transition: transform var(--transition-medium), border-color var(--transition-medium);
}

.showcase-card:hover {
    transform: rotate(0deg) scale(1.03);
    border-color: var(--border-focus);
}

.showcase-img-placeholder {
    border-radius: var(--radius-sm);
    width: 100%;
    height: 320px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.showcase-img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    display: block;
}

.showcase-placeholder-icon {
    font-size: 5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.8;
}

.showcase-info h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 4px;
}

.showcase-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================================================
   ORTAK BÖLÜM STİLLERİ (SECTION HEADER)
   ========================================================================== */
section {
    padding: 100px 0;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 2px;
    color: var(--accent-primary);
    text-transform: uppercase;
    margin-bottom: 8px;
    display: block;
}

.section-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.8rem;
    letter-spacing: -1px;
    color: var(--text-primary);
}

.section-underline {
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    margin: 16px auto 0;
    border-radius: var(--radius-full);
}

.section-underline.left {
    margin: 16px 0 0 0;
}

/* ==========================================================================
   PROJELER BÖLÜMÜ / WORK SECTION
   ========================================================================== */
.project-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.project-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px;
    transition: transform var(--transition-medium), border-color var(--transition-medium), box-shadow var(--transition-medium);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-focus);
    box-shadow: var(--shadow-lg);
}

.project-icon-top {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.icon-project {
    font-size: 1.8rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.project-info {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--accent-secondary);
    margin-bottom: 8px;
    display: block;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.project-desc-short {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.6;
    flex-grow: 1;
}

.project-actions {
    display: flex;
    gap: 12px;
    margin-top: auto;
}

.project-actions .btn {
    padding: 10px 20px;
    font-size: 0.85rem;
}

/* ==========================================================================
   HAKKIMDA BÖLÜMÜ / ABOUT SECTION
   ========================================================================== */
.about-section {
    background-color: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    background-color: var(--bg-tertiary);
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
}

.placeholder-icon {
    font-size: 6rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.6;
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.about-focus-areas {
    margin-top: 24px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 28px;
}

.focus-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.focus-item i {
    color: var(--accent-primary);
    font-size: 1.25rem;
    margin-top: 4px;
}

.focus-item:nth-child(2) i {
    color: var(--accent-secondary);
}

.focus-item h4 {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 2px;
    color: var(--text-primary);
}

.focus-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.1;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

/* ==========================================================================
   EĞİTİM BÖLÜMÜ / EDUCATION (TIMELINE)
   ========================================================================== */
.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 40px auto 0;
    padding-left: 30px;
}

.timeline-line {
    position: absolute;
    top: 0;
    left: 4px;
    width: 2px;
    height: 100%;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -30px;
    top: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-gradient);
    box-shadow: 0 0 10px var(--accent-primary);
}

.timeline-date {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--accent-secondary);
    margin-bottom: 8px;
}

.timeline-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast);
}

.timeline-content:hover {
    border-color: var(--border-focus);
}

.timeline-content h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.timeline-content h4 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ==========================================================================
   YETENEKLER BÖLÜMÜ / SKILLS SECTION
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.skills-grid .span-2 {
    grid-column: span 2;
}

.skill-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    transition: transform var(--transition-medium), border-color var(--transition-medium);
}

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-focus);
}

.skill-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 20px;
    background-color: var(--bg-tertiary);
}

.figma-color { color: #f24e1e; background-color: rgba(242, 78, 30, 0.08); }
.photoshop-color { color: #31a8ff; background-color: rgba(49, 168, 255, 0.08); }
.illustrator-color { color: #ff9a00; background-color: rgba(255, 154, 0, 0.08); }
.indesign-color { color: #ff3366; background-color: rgba(255, 51, 102, 0.08); }

.skill-card h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.skill-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    height: 40px;
}

.skill-level {
    height: 5px;
    background-color: var(--border-color);
    border-radius: var(--radius-full);
    overflow: hidden;
    width: 100%;
}

.skill-level span {
    display: block;
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

/* ==========================================================================
   ARAŞTIRMA & İLGİ ALANLARI / INTERESTS SECTION (MINIMAL GRID)
   ========================================================================== */
.interests-minimal-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 60px;
    margin-top: 50px;
}

.interest-minimal-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.interest-minimal-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-top: 4px;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.interest-minimal-item:hover .interest-minimal-icon {
    transform: scale(1.1);
    color: var(--accent-secondary);
}

.interest-minimal-content h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.interest-minimal-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .interests-minimal-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* ==========================================================================
   SERTİFİKALAR BÖLÜMÜ / CERTIFICATES (RICH STYLE)
   ========================================================================== */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.certificate-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-medium), border-color var(--transition-medium), box-shadow var(--transition-medium);
    position: relative;
}

.certificate-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-focus);
    box-shadow: var(--shadow-lg);
}

.certificate-badge-tag {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    z-index: 10;
}

.pdf-badge {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.img-badge {
    background-color: rgba(99, 102, 241, 0.1);
    color: #6366f1;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* Görsel Sertifika Kartı */
.certificate-img-wrapper {
    position: relative;
    width: 100%;
    height: 240px;
    background-color: var(--bg-tertiary);
    overflow: hidden;
}

.certificate-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.certificate-card:hover .certificate-img {
    transform: scale(1.05);
}

.certificate-hover-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 10, 10, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.certificate-card:hover .certificate-hover-overlay {
    opacity: 1;
}

.certificate-view-btn {
    font-family: var(--font-heading);
    font-weight: 600;
    color: #ffffff;
    background-color: var(--accent-primary);
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
}

.certificate-view-btn:hover {
    background-color: var(--accent-secondary);
}

/* Şık PDF Sertifika Kartı */
.pdf-card-rich {
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.certificate-icon-wrapper-rich {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.cert-icon {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.certificate-info-rich {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.cert-institution {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--accent-secondary);
    margin-bottom: 6px;
    display: block;
}

.certificate-info-rich h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.certificate-info-rich p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
    flex-grow: 1;
}

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

.cert-type {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-cert-link {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.btn-cert-link:hover {
    color: var(--accent-secondary);
    transform: translateX(3px);
}

/* ==========================================================================
   İLETİŞİM BÖLÜMÜ / CONTACT SECTION
   ========================================================================== */
.contact-section {
    background-color: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 80px;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-info-text {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.detail-item i {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--accent-primary);
}

.detail-item h4 {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-item span, .detail-item a {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-link:hover {
    color: #ffffff;
    background: var(--accent-gradient);
    border-color: transparent;
    transform: translateY(-3px);
}

.contact-form-wrapper {
    position: relative;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 28px;
    transition: opacity var(--transition-medium);
}

.form-group {
    position: relative;
    width: 100%;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-primary);
    background-color: var(--bg-primary);
}

.form-group label {
    position: absolute;
    top: 16px;
    left: 16px;
    color: var(--text-muted);
    font-size: 0.95rem;
    pointer-events: none;
    transition: transform var(--transition-fast), font-size var(--transition-fast), color var(--transition-fast);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    transform: translateY(-28px) translateX(-4px);
    font-size: 0.8rem;
    color: var(--accent-primary);
    font-weight: 500;
}

.btn-submit {
    align-self: flex-start;
}

.form-success-msg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--bg-secondary);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-medium);
}

.form-success-msg.show {
    opacity: 1;
    pointer-events: auto;
}

.success-icon {
    font-size: 3.5rem;
    color: #2ec4b6;
    margin-bottom: 20px;
}

.form-success-msg h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.form-success-msg p {
    color: var(--text-secondary);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    background-color: var(--bg-primary);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.copyright {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ==========================================================================
   BEHANCE TARZI PROJE DETAY MODALI (BEHANCE MODAL)
   ========================================================================== */
.project-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 2000;
    display: flex;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-medium);
}

.project-modal.show {
    opacity: 1;
    pointer-events: auto;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 720px;
    height: 100%;
    background-color: var(--modal-bg);
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    z-index: 2002;
    transform: translateY(30px);
    transition: transform var(--transition-medium);
}

.project-modal.show .modal-content {
    transform: translateY(0);
}

.modal-close-btn {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    z-index: 2005;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.modal-close-btn:hover {
    background-color: var(--accent-secondary);
    transform: scale(1.05);
}

.modal-body {
    padding: 60px 40px;
}

.modal-project-header {
    text-align: center;
    margin-bottom: 36px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.modal-project-tag {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent-secondary);
    margin-bottom: 12px;
    display: inline-block;
}

.modal-project-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.2rem;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.modal-project-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.modal-project-specs-list {
    margin-top: 30px;
    padding: 24px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.modal-project-specs-list h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.modal-project-specs-list ul {
    list-style-type: none;
}

.modal-project-specs-list li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.modal-project-specs-list li::before {
    content: "•";
    color: var(--accent-primary);
    font-weight: bold;
    font-size: 1.2rem;
    position: absolute;
    left: 0;
    top: -2px;
}

.modal-project-specs-list li:last-child {
    margin-bottom: 0;
}

.modal-project-footer {
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
    margin-top: 40px;
}

.modal-project-footer h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.modal-project-footer p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.modal-contact-btn {
    padding: 12px 36px;
    border-radius: var(--radius-sm);
}

body.modal-open {
    overflow: hidden;
}

/* ==========================================================================
   RESPONSIVE TASARIM (MOBİL UYUMLULUK)
   ========================================================================== */
@media (max-width: 1024px) {
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 60px;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-showcase {
        order: -1;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .about-image-wrapper {
        height: 380px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .pdf-card-rich {
        text-align: center;
        align-items: center;
    }

    .certificate-icon-wrapper-rich {
        margin: 0 auto 20px;
    }

    .btn-cert-link {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-primary);
        flex-direction: column;
        padding: 40px 24px;
        gap: 24px;
        transform: translateX(100%);
        transition: transform var(--transition-medium);
        border-top: 1px solid var(--border-color);
        overflow-y: auto;
    }
    
    .nav-menu.open {
        transform: translateX(0);
    }
    
    .menu-toggle.open .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .menu-toggle.open .bar:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.open .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .modal-body {
        padding: 40px 20px;
    }
    
    .modal-project-title {
        font-size: 1.8rem;
    }
    
    .modal-close-btn {
        top: 16px;
        right: 16px;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 600px) {
    .project-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid .span-2 {
        grid-column: span 1;
    }

    .certificates-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .about-stats {
        flex-wrap: wrap;
        gap: 20px 40px;
    }

    .about-focus-areas {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 20px;
    }

    .showcase-card {
        transform: none !important;
        max-width: 100%;
    }

    .showcase-img {
        height: 240px;
    }
}