/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg-darkest: #0A0A0C;       /* Obsidian Black */
    --color-bg-dark: #121215;          /* Rich Charcoal */
    --color-bg-card: #1A1A20;          /* Deep Card Grey */
    --color-bg-glass: rgba(18, 18, 21, 0.75); /* Translucent Glass */
    
    --color-primary: #00E676;          /* Vivid Premium Emerald Green */
    --color-primary-glow: rgba(0, 230, 118, 0.2);
    --color-accent-teal: #05A081;      /* Forest/Strategic Teal */
    --color-accent-blue: #4B9CD3;      /* Sophisticated Slate Blue */
    --color-accent-blue-glow: rgba(75, 156, 211, 0.15);
    
    --color-text-white: #FFFFFF;       /* Crisp White */
    --color-text-light: #E2E8F0;       /* Off-White */
    --color-text-grey: #A0A0A5;        /* Premium Muted Grey */
    --color-text-dark: #6C757D;        /* Deep Muted Grey */
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 230, 118, 0.15);
    
    /* Fonts */
    --font-headings: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Layout & Spacing */
    --header-height: 80px;
    --header-height-mobile: 70px;
    --container-width: 1200px;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

/* ==========================================================================
   GLOBAL RESET & BASICS
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg-darkest);
    color: var(--color-text-light);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headings);
    color: var(--color-text-white);
    font-weight: 700;
    line-height: 1.25;
}

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

ul {
    list-style: none;
}

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

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

/* Custom Premium Scrollbar - Siber Zümrüt & Mavi Temalı */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--color-primary), var(--color-accent-teal));
    border-radius: 50px;
    border: 3px solid var(--color-bg-darkest); /* Şık bir yüzer neon sütun hissi için */
    transition: var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, var(--color-accent-blue), var(--color-primary));
}

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

/* ==========================================================================
   BUTTONS & ACCENTS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-smooth);
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-teal));
    color: var(--color-bg-darkest);
    box-shadow: 0 4px 20px rgba(0, 230, 118, 0.25);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-primary));
    opacity: 0;
    z-index: -1;
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 230, 118, 0.4);
    color: var(--color-text-white);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-white);
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 230, 118, 0.1);
}

.btn-nav {
    padding: 8px 18px;
    font-size: 0.85rem;
    background: rgba(0, 230, 118, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(0, 230, 118, 0.25);
}

.btn-nav:hover {
    background: var(--color-primary);
    color: var(--color-bg-darkest);
    box-shadow: 0 0 15px var(--color-primary-glow);
}

.btn-icon {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
    transform: translate(2px, -2px);
}

/* Badge Accent */
.badge-accent {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(75, 156, 211, 0.08);
    border: 1px solid rgba(75, 156, 211, 0.2);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent-blue);
    margin-bottom: 20px;
}

.badge-icon {
    width: 16px;
    height: 16px;
}

/* Typography Gradient */
.text-gradient {
    background: linear-gradient(135deg, var(--color-text-white) 30%, var(--color-primary) 70%, var(--color-accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.accent-dot {
    color: var(--color-primary);
    text-shadow: 0 0 10px var(--color-primary-glow);
}

/* ==========================================================================
   HAREKETLİ ARKA PLAN (CANVAS)
   ========================================================================== */
#bg-particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1; /* Her şeyin arkasında */
    pointer-events: none; /* Altındaki butonların tıklanmasını engellemez */
    background: transparent;
}

/* Floating background glowing orbs */
.bg-blur-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.35;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--color-primary);
    top: -100px;
    right: -100px;
    animation: orbFloat1 25s infinite ease-in-out alternate;
    will-change: transform;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--color-accent-blue);
    bottom: -150px;
    left: -150px;
    animation: orbFloat2 32s infinite ease-in-out alternate;
    will-change: transform;
}

/* CSS Orb Hareket Animasyonları (GPU Dostu 3D transform) */
@keyframes orbFloat1 {
    0% {
        transform: translate3d(0, 0, 0) scale(1);
    }
    50% {
        transform: translate3d(80px, 50px, 0) scale(1.15);
    }
    100% {
        transform: translate3d(-40px, -30px, 0) scale(0.9);
    }
}

@keyframes orbFloat2 {
    0% {
        transform: translate3d(0, 0, 0) scale(1.1);
    }
    50% {
        transform: translate3d(-70px, -90px, 0) scale(0.85);
    }
    100% {
        transform: translate3d(60px, 40px, 0) scale(1.05);
    }
}

/* ==========================================================================
   NAVIGATION & GLASS NAV BAR
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--color-bg-glass);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    height: 70px;
    background-color: rgba(10, 10, 12, 0.9);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: var(--container-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-headings);
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: -0.5px;
    color: var(--color-text-white);
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 44px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition-smooth);
}

.logo:hover .logo-img {
    transform: scale(1.05) rotate(2deg);
}

.desktop-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-grey);
    position: relative;
    padding: 6px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent-blue));
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-smooth);
}

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

/* Hamburger Trigger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    z-index: 1100;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-white);
    border-radius: 2px;
    transition: var(--transition-smooth);
    transform-origin: left;
}

/* Hamburger active transformation */
.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(2px, -1px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(2px, 1px);
}

/* Mobile Drawer Overlay */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: rgba(10, 10, 12, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: right var(--transition-smooth);
}

.mobile-drawer.active {
    right: 0;
}

.mobile-menu {
    text-align: center;
    width: 100%;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-bottom: 40px;
}

.mobile-link {
    font-family: var(--font-headings);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-text-grey);
    display: inline-block;
}

.mobile-link:hover {
    color: var(--color-primary);
    transform: scale(1.05);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 60px;
    background-color: transparent;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 10;
}

.hero-title {
    font-size: clamp(2.5rem, 4.5vw, 4.2rem);
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 1.2vw, 1.25rem);
    color: var(--color-text-grey);
    margin-bottom: 40px;
    max-width: 580px;
    font-weight: 300;
}

.hero-subtitle strong {
    color: var(--color-text-white);
    font-weight: 600;
}

.hero-ctas {
    display: flex;
    gap: 20px;
}

/* Visual Side / Portrait container */
.portrait-container {
    position: relative;
    width: 100%;
    max-width: 380px;
    margin: 0 auto;
}

.portrait-glow-ring {
    position: absolute;
    top: -12px;
    left: -12px;
    width: calc(100% + 24px);
    height: calc(100% + 24px);
    border-radius: 50%; /* Daire şeklinde ışık halkası */
    background: linear-gradient(135deg, var(--color-primary-glow), transparent, var(--color-accent-blue-glow));
    border: 2px solid rgba(0, 230, 118, 0.25);
    z-index: 1;
    animation: pulse-slow 8s infinite alternate ease-in-out;
    aspect-ratio: 1/1;
}

.portrait-image-wrapper {
    position: relative;
    border-radius: 50%; /* Kusursuz daire portre kesimi */
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7), 0 0 35px rgba(0, 230, 118, 0.12);
    z-index: 2;
    aspect-ratio: 1/1; /* Daire oranı */
    /* Fotoğrafın altından sızacak parıltılı siber radyal ışık efekti */
    background: radial-gradient(circle at 50% 30%, rgba(0, 230, 118, 0.15) 0%, rgba(75, 156, 211, 0.05) 50%, var(--color-bg-darkest) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.portrait-img-main {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    /* Gelişmiş Kenar Yumuşatma Maskesi: Fotoğrafı dışa doğru (saç ve omuz uçlarında) saydamlaştırarak arka plan ışığına gömer */
    -webkit-mask-image: radial-gradient(circle at 50% 45%, black 48%, transparent 88%);
    mask-image: radial-gradient(circle at 50% 45%, black 48%, transparent 88%);
    /* Beyaz arka planı tamamen yok ederek fotoğrafı karanlık temaya gömen sihirli karışım */
    mix-blend-mode: multiply;
    /* Gölgelenen renkleri dengelemek için hafif doygunluk ve parlaklık artışı */
    filter: brightness(1.1) contrast(1.08) saturate(0.98);
    transition: transform var(--transition-slow), filter var(--transition-smooth);
    display: block;
}

.portrait-vignette {
    display: none; /* Artık radyal maske ve multiply kullandığımız için bu katmana gerek kalmadı */
}

/* Hover etkileşimleri */
.portrait-image-wrapper:hover {
    border-color: var(--color-primary);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8), 0 0 45px rgba(0, 230, 118, 0.2);
}

.portrait-image-wrapper:hover .portrait-img-main {
    transform: scale(1.04);
    filter: brightness(1.15) contrast(1.12) saturate(1.02);
}

.portrait-placeholder {
    width: 100%;
    height: 100%;
}

.abstract-svg-portrait {
    display: block;
    width: 100%;
    height: 100%;
}

/* Floating interactive stats inside hero */
.stats-card {
    position: absolute;
    bottom: 20px;
    left: -30px;
    background: rgba(26, 26, 32, 0.85);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-md);
    padding: 16px 22px;
    display: flex;
    align-items: center;
    gap: 15px;
    z-index: 10;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
    border-left: 3px solid var(--color-primary);
    animation: float-slow 4s infinite ease-in-out;
}

.stats-icon-wrapper {
    background: rgba(0, 230, 118, 0.1);
    color: var(--color-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.stats-text {
    display: flex;
    flex-direction: column;
}

.stats-number {
    font-family: var(--font-headings);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text-white);
}

.stats-label {
    font-size: 0.75rem;
    color: var(--color-text-grey);
    font-weight: 500;
}

/* Scroll indicator link */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 26px;
    height: 42px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    z-index: 10;
}

.scroll-dot {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--color-primary);
    border-radius: 50%;
    animation: scroll-indicator-anim 2s infinite ease-in-out;
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about-section {
    padding: 120px 0;
    background: linear-gradient(to bottom, rgba(10, 10, 12, 0) 0%, rgba(18, 18, 21, 0.45) 15%, rgba(18, 18, 21, 0.45) 85%, rgba(10, 10, 12, 0) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    position: relative;
    border-bottom: none;
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-tagline {
    font-family: var(--font-headings);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--color-primary);
    display: block;
    margin-bottom: 10px;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    margin-bottom: 20px;
}

.title-bar {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent-blue));
    margin: 0 auto;
    border-radius: 3px;
}

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

.about-lead {
    font-size: 1.35rem;
    font-weight: 500;
    line-height: 1.45;
    color: var(--color-text-white);
    margin-bottom: 25px;
    border-left: 3px solid var(--color-accent-blue);
    padding-left: 20px;
}

.about-paragraph {
    color: var(--color-text-grey);
    margin-bottom: 20px;
    font-size: 1rem;
    font-weight: 300;
}

.about-signatures {
    margin-top: 40px;
    display: flex;
    align-items: center;
}

.sig-title {
    display: flex;
    flex-direction: column;
}

.sig-title strong {
    font-family: var(--font-headings);
    font-size: 1.2rem;
    color: var(--color-text-white);
}

.sig-title span {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 500;
}

/* Skills Column styles */
.skills-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.skills-subtitle {
    color: var(--color-text-grey);
    margin-bottom: 35px;
    font-size: 0.95rem;
    font-weight: 300;
}

.skills-grid-new {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 15px;
    margin-bottom: 40px;
}

.skill-card-new {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 16px;
    display: flex;
    gap: 15px;
    align-items: flex-start;
    transition: var(--transition-smooth), opacity 0.6s cubic-bezier(0.25, 1, 0.5, 1), transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    position: relative;
    overflow: hidden;
    
    /* Animation initial state for staggered reveal */
    opacity: 0;
    transform: translateY(20px);
}

.skill-card-new.visible {
    opacity: 1;
    transform: translateY(0);
}

.skill-card-new::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: transparent;
    transition: var(--transition-smooth);
}

.skill-card-new:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.12);
    background: rgba(26, 26, 32, 0.95);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

.skill-card-new:hover::before {
    background: var(--card-accent-color);
}

.skill-card-new:nth-child(3n+1) {
    --card-accent-color: var(--color-accent-teal);
}
.skill-card-new:nth-child(3n+2) {
    --card-accent-color: var(--color-accent-blue);
}
.skill-card-new:nth-child(3n+3) {
    --card-accent-color: var(--color-primary);
}

.skill-card-icon-wrapper {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-smooth);
}

.skill-card-new:hover .skill-card-icon-wrapper {
    transform: scale(1.12) rotate(3deg);
}

/* Icon specific background glows */
.skill-card-icon-wrapper.icon-teal {
    background: rgba(5, 160, 129, 0.12);
    color: var(--color-accent-teal);
    border: 1px solid rgba(5, 160, 129, 0.15);
}
.skill-card-icon-wrapper.icon-blue {
    background: rgba(75, 156, 211, 0.12);
    color: var(--color-accent-blue);
    border: 1px solid rgba(75, 156, 211, 0.15);
}
.skill-card-icon-wrapper.icon-green {
    background: rgba(0, 230, 118, 0.12);
    color: var(--color-primary);
    border: 1px solid rgba(0, 230, 118, 0.15);
}

.skill-card-content {
    flex-grow: 1;
}

.skill-card-title {
    font-family: var(--font-headings);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-white);
    margin-bottom: 5px;
    line-height: 1.35;
}

.skill-card-desc {
    font-size: 0.8rem;
    color: var(--color-text-grey);
    line-height: 1.45;
    font-weight: 300;
}

/* Skill decorative highlights */
.skills-decor-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 30px;
}

.decor-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition-smooth);
}

.decor-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.12);
    background: rgba(26, 26, 32, 0.95);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
}

.decor-icon-wrapper {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-smooth);
}

.decor-card:hover .decor-icon-wrapper {
    transform: scale(1.1) rotate(2deg);
}

.decor-icon-wrapper.icon-teal {
    background: rgba(5, 160, 129, 0.1);
    color: var(--color-accent-teal);
    border: 1px solid rgba(5, 160, 129, 0.12);
}

.decor-icon-wrapper.icon-blue {
    background: rgba(75, 156, 211, 0.1);
    color: var(--color-accent-blue);
    border: 1px solid rgba(75, 156, 211, 0.12);
}

.decor-icon-wrapper.icon-green {
    background: rgba(0, 230, 118, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(0, 230, 118, 0.12);
}

.decor-card span {
    font-family: var(--font-headings);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-light);
    line-height: 1.2;
}

.decor-icon {
    width: 16px;
    height: 16px;
    transition: var(--transition-smooth);
}

.icon-teal { color: var(--color-accent-teal); }
.icon-blue { color: var(--color-accent-blue); }
.icon-green { color: var(--color-primary); }

/* ==========================================================================
   PORTFOLIO / PROJECTS SECTION
   ========================================================================== */
.projects-section {
    padding: 120px 0;
    background-color: transparent;
    border-bottom: none;
}

/* Category Filters */
.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-grey);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 50px;
    transition: var(--transition-smooth);
}

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

.filter-btn.active {
    color: var(--color-bg-darkest);
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 4px 15px rgba(0, 230, 118, 0.25);
}

/* Projects Grid Layout */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 230, 118, 0.3);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(0, 230, 118, 0.05);
}

.project-image-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: #0D0D10;
}

.project-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 40%, rgba(26, 26, 32, 0.9));
    z-index: 1;
}

.project-image,
.project-svg-placeholder {
    display: block;
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image,
.project-card:hover .project-svg-placeholder {
    transform: scale(1.05);
}

.project-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(10, 10, 12, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 4px;
    z-index: 2;
}

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

.project-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
    font-weight: 600;
    line-height: 1.35;
    transition: var(--transition-fast);
}

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

.project-desc {
    color: var(--color-text-grey);
    font-size: 0.9rem;
    font-weight: 300;
    line-height: 1.5;
    margin-bottom: 24px;
    flex-grow: 1;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-white);
    align-self: flex-start;
}

.link-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

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

.project-link:hover .link-icon {
    transform: translateX(4px);
}

/* CSS Filter Animation helper */
.project-card.hide {
    display: none;
}

.project-card.show {
    animation: scale-up 0.5s ease forwards;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-section {
    padding: 120px 0;
    background: linear-gradient(to bottom, rgba(10, 10, 12, 0) 0%, rgba(18, 18, 21, 0.45) 15%, rgba(18, 18, 21, 0.45) 85%, rgba(10, 10, 12, 0) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    position: relative;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: flex-start;
}

.contact-lead-text {
    font-size: 1.6rem;
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #FFF, var(--color-accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-paragraph {
    color: var(--color-text-grey);
    margin-bottom: 40px;
    font-size: 0.95rem;
    font-weight: 300;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 45px;
}

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

.contact-icon-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--color-accent-blue);
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.contact-item:hover .contact-icon-box {
    background: var(--color-accent-blue-glow);
    border-color: var(--color-accent-blue);
    color: var(--color-text-white);
    transform: translateY(-2px);
}

.contact-item-details {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--color-text-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    margin-bottom: 3px;
}

.contact-value {
    font-size: 1rem;
    color: var(--color-text-white);
    font-weight: 500;
}

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

/* Social links container */
.social-profiles {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.social-title {
    font-size: 0.8rem;
    color: var(--color-text-dark);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--color-text-grey);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.social-link svg,
.social-link i {
    width: 20px;
    height: 20px;
    stroke-width: 2px;
    display: block;
    transition: var(--transition-smooth);
}

.social-link:hover {
    color: var(--color-bg-darkest);
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 230, 118, 0.3);
}

.social-link:hover svg {
    transform: scale(1.1);
}

/* Floating Label Contact Form Wrapper */
.contact-form-wrapper {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 40px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.contact-form-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent-blue));
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

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

/* Floating Label Fields */
.form-input {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1.5px solid rgba(255, 255, 255, 0.15);
    color: var(--color-text-white);
    padding: 10px 0;
    font-size: 0.95rem;
    outline: none;
    font-family: inherit;
    transition: var(--transition-smooth);
}

.form-textarea {
    resize: none;
}

.form-label {
    position: absolute;
    top: 10px;
    left: 0;
    color: var(--color-text-grey);
    font-size: 0.95rem;
    pointer-events: none;
    transition: var(--transition-smooth);
}

/* Float Label effect when focus or placeholder is shown */
.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
    top: -15px;
    font-size: 0.75rem;
    color: var(--color-primary);
    font-weight: 600;
}

.form-input:focus {
    border-color: var(--color-primary);
}

/* Error Styles */
.form-group.has-error .form-input {
    border-color: #FF5252;
}

.form-group.has-error .form-label {
    color: #FF5252;
}

.form-error {
    position: absolute;
    bottom: -18px;
    left: 0;
    font-size: 0.7rem;
    color: #FF5252;
    display: none;
    font-weight: 500;
}

.form-group.has-error .form-error {
    display: block;
}

/* Submit Button & Loader */
.btn-submit {
    width: 100%;
    height: 52px;
    padding: 0;
    margin-top: 10px;
}

.btn-submit.loading .btn-text,
.btn-submit.loading .btn-icon {
    display: none;
}

.spinner-loader {
    width: 22px;
    height: 22px;
    border: 2px solid rgba(10, 10, 12, 0.3);
    border-top: 2px solid var(--color-bg-darkest);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: none;
}

.btn-submit.loading .spinner-loader {
    display: block;
}

/* Form Success State Overlay */
.form-success-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-card);
    z-index: 15;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.form-success-overlay.active {
    opacity: 1;
    visibility: visible;
}

.success-icon-wrapper {
    background: rgba(0, 230, 118, 0.1);
    color: var(--color-primary);
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    border: 1px solid rgba(0, 230, 118, 0.2);
}

.success-check-icon {
    width: 32px;
    height: 32px;
}

.success-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.success-desc {
    color: var(--color-text-grey);
    font-size: 0.95rem;
    margin-bottom: 30px;
    max-width: 340px;
    line-height: 1.5;
}

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

/* ==========================================================================
   FOOTER
   ========================================================================== */
/* ==========================================================================
   MODERN PREMIUM FOOTER (MINIMALIST)
   ========================================================================== */
.main-footer {
    position: relative;
    background-color: #08080a; /* Daha derin obsidian siyahı */
    border-top: 1.5px solid rgba(0, 230, 118, 0.12); /* Parlayan premium üst kenarlık */
    padding: 60px 0 40px;
    overflow: hidden;
    z-index: 10;
}

/* Arka plandaki yumuşak dairesel neon ışıma */
.footer-glow-orb {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 250px;
    background: radial-gradient(circle, rgba(0, 230, 118, 0.08) 0%, rgba(75, 156, 211, 0.02) 60%, transparent 100%);
    filter: blur(50px);
    pointer-events: none;
    z-index: 0;
}

.footer-minimal-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 1;
}

.footer-logo {
    font-size: 1.6rem;
    margin-bottom: 16px;
    font-weight: 800;
}

.footer-motto {
    color: var(--color-text-grey);
    font-size: 1.05rem;
    font-style: italic;
    font-weight: 300;
    max-width: 500px;
    line-height: 1.6;
    margin-bottom: 30px;
}

/* Sosyal Medya İkonları */
.footer-socials {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.footer-social-link {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-grey);
    transition: var(--transition-smooth);
}

.footer-social-link i,
.footer-social-link svg {
    width: 20px;
    height: 20px;
    transition: var(--transition-smooth);
    display: block;
}

.footer-social-link:hover {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-teal));
    border-color: var(--color-primary);
    color: var(--color-bg-darkest);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 230, 118, 0.3);
}

.footer-social-link:hover i,
.footer-social-link:hover svg {
    transform: scale(1.1);
    stroke: var(--color-bg-darkest);
}

/* Alt Bilgi ve Slogan Çizgisi */
.footer-bottom-line {
    width: 100%;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-dark);
    font-size: 0.85rem;
}

.footer-copyright {
    color: var(--color-text-dark);
}

.footer-meta-info {
    font-weight: 500;
}

.text-white {
    color: var(--color-text-white);
}

/* ==========================================================================
   YUKARI GİT BUTONU (BACK TO TOP)
   ========================================================================== */
.back-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: rgba(18, 18, 21, 0.8);
    border: 1.5px solid rgba(0, 230, 118, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px) scale(0.9);
    transition: all var(--transition-smooth);
    z-index: 99;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 230, 118, 0.1);
}

.back-to-top-btn i,
.back-to-top-btn svg {
    width: 18px;
    height: 18px;
    transition: var(--transition-smooth);
}

.back-to-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.back-to-top-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg-darkest);
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 230, 118, 0.4), 0 0 20px rgba(0, 230, 118, 0.2);
}

.back-to-top-btn:hover i,
.back-to-top-btn:hover svg {
    transform: translateY(-2px);
    stroke: var(--color-bg-darkest);
}

/* Mobil Uyumlandırma */
@media screen and (max-width: 600px) {
    .footer-bottom-line {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .footer-motto {
        font-size: 0.95rem;
        padding: 0 15px;
    }
    
    .back-to-top-btn {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}


/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
/* Fade in on Scroll elements initial state */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

.delay-200 { transition-delay: 0.2s; }
.delay-400 { transition-delay: 0.4s; }

/* Spin / Rotation anim */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.spin-slow {
    transform-origin: center;
    animation: spin 20s linear infinite;
}

/* Keyframe for scale filter animation */
@keyframes scale-up {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Float Animation */
@keyframes float-slow {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes float-slow-mobile {
    0%, 100% { transform: translate(-50%, 10px); }
    50% { transform: translate(-50%, 2px); }
}

/* Pulse animation */
@keyframes pulse-slow {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.02); opacity: 1; }
}

/* Scroll Indicator Keyframes */
@keyframes scroll-indicator-anim {
    0% {
        top: 8px;
        opacity: 0;
    }
    30% {
        opacity: 1;
    }
    60% {
        top: 26px;
        opacity: 0;
    }
    100% {
        top: 8px;
        opacity: 0;
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

/* Tablet & Smaller Screens (under 1024px) */
@media screen and (max-width: 1024px) {
    :root {
        --header-height: 70px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .stats-card {
        left: 0;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-links-area {
        justify-self: start;
    }
    
    .footer-bottom {
        grid-column: span 1;
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}

/* Mobile Screens (under 768px) */
@media screen and (max-width: 768px) {
    .desktop-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .stats-card {
        left: 50% !important;
        bottom: -15px !important;
        transform: translate(-50%, 10px) !important;
        animation: float-slow-mobile 4s infinite ease-in-out !important;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-form-wrapper {
        padding: 30px 20px;
    }
    
    .portfolio-filters {
        gap: 8px;
    }
    
    .filter-btn {
        padding: 8px 18px;
        font-size: 0.8rem;
    }
    
    .project-grid {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 480px) {
    .portrait-container {
        max-width: 290px;
    }
    
    .hero-ctas {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .skills-decor-grid {
        grid-template-columns: 1fr;
    }
}