/* ==========================================================================
   DESIGN SYSTEM & MODERN CORE VARIABLES - HUMAN MADE ARCHITECTURE
   ========================================================================== */
:root {
    /* Ultra-Premium Matte Gold & Obsidian Engineering Theme */
    --bg-primary: #070707; /* Obsidyen Siyahı - mat ve derin */
    --bg-secondary: #0f0f0f; /* Kömür Gri */
    --card-bg: #121212; /* Premium Mat Panel */
    
    /* Elegant Engineering Gold Accents */
    --primary-accent: #d4af37; /* Sıcak Klasik Altın */
    --accent-gold-light: #dfba73; /* Şampanya Altını */
    --primary-glow: rgba(212, 175, 55, 0.03); /* Eser miktarda altın parıltısı */
    
    /* Fine-Line Mechanical Borders */
    --card-border: rgba(212, 175, 55, 0.08); /* Son derece ince altın çizgi */
    --card-border-hover: rgba(212, 175, 55, 0.3); /* Odaklanmış altın kontur */
    --divider-color: rgba(255, 255, 255, 0.04);
    
    /* Text Colors */
    --text-primary: #f5f5f7; /* Off-White */
    --text-secondary: #8e9aa8; /* Teknik Muted Gri-Mavi */
    --text-muted: #4e5967; /* Karanlık Grid Yazısı */
    
    /* Gradient Surface (Matte Style) */
    --gradient-primary: linear-gradient(135deg, #d4af37 0%, #dfba73 100%);
    --gradient-surface: linear-gradient(180deg, #101010 0%, #070707 100%);
    
    /* Typo & Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-title: 'Outfit', sans-serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    
    /* Shadows - Mechanical Depth (No AI Glows) */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.8);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.9);
    --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.95);
    --shadow-neon-gold: 0 0 15px rgba(212, 175, 55, 0.05); /* Minimal teknik parlama */
    
    /* Animation Speeds */
    --transition-fast: 0.1s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   GLOBAL RESETS & DRAFTING PAPER BACKGROUND
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    height: 100%;
}

body::selection {
    background-color: rgba(212, 175, 55, 0.2);
    color: #ffffff;
}

body {
    background-color: var(--bg-primary);
    /* CAD Milimetrik Teknik Eskiz Kağıdı Deseni */
    background-image: 
        linear-gradient(rgba(212, 175, 55, 0.012) 1px, transparent 1px),
        linear-gradient(90deg, rgba(212, 175, 55, 0.012) 1px, transparent 1px),
        linear-gradient(rgba(212, 175, 55, 0.005) 2px, transparent 2px),
        linear-gradient(90deg, rgba(212, 175, 55, 0.005) 2px, transparent 2px);
    background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px;
    background-position: center;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1 0 auto;
    flex-grow: 1;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-family: var(--font-title);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

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

ul {
    list-style: none;
}

/* ==========================================================================
   CAD DRAFT TARGET CORNERS & COORDINATES
   ========================================================================== */
.corner-crosshair {
    position: absolute;
    width: 16px;
    height: 16px;
    color: rgba(212, 175, 55, 0.2);
    pointer-events: none;
    z-index: 10;
}

.corner-crosshair::before, .corner-crosshair::after {
    content: '';
    position: absolute;
    background: currentColor;
}

.corner-crosshair::before {
    top: 7px; left: 0; width: 100%; height: 1px;
}

.corner-crosshair::after {
    top: 0; left: 7px; width: 1px; height: 100%;
}

.top-left { top: 12px; left: 12px; }
.top-right { top: 12px; right: 12px; }
.bottom-left { bottom: 12px; left: 12px; }
.bottom-right { bottom: 12px; right: 12px; }

/* CAD Grid Borders (A-D, 1-4) on Hero Visual Wrapper */
.cad-border {
    border: 1px solid var(--card-border);
    position: relative;
    padding: 16px;
    background-color: rgba(7, 7, 7, 0.4);
}

.cad-coord-x {
    position: absolute;
    top: 2px;
    left: 40px;
    right: 40px;
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    pointer-events: none;
}

.cad-coord-y {
    position: absolute;
    left: 3px;
    top: 40px;
    bottom: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    pointer-events: none;
}

/* ==========================================================================
   PRELOADER (Matte Gold Aerospace Theme)
   ========================================================================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    width: 100%;
    max-width: 440px;
    padding: 0 24px;
}

.loader-aviation-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-bottom: 35px;
}

.loader-icon-wrapper {
    width: 70px;
    height: 70px;
    color: var(--primary-accent);
    animation: rotateQuadcopter 3s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

.loader-aviation-icon {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 4px rgba(212, 175, 55, 0.2));
}

.loader-brand-title {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
}

.loader-brand-subtitle {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--accent-gold-light);
    margin: 0;
    text-transform: uppercase;
}

@keyframes rotateQuadcopter {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.05); }
    100% { transform: rotate(360deg) scale(1); }
}

.loader-bar {
    width: 100%;
    height: 2px;
    background-color: rgba(212, 175, 55, 0.05);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.loader-progress {
    width: 0;
    height: 100%;
    background: var(--primary-accent);
    animation: loaderProgressAnim 2s infinite ease-in-out;
}

@keyframes loaderProgressAnim {
    0% { width: 0%; left: 0%; }
    50% { width: 100%; left: 0%; }
    100% { width: 0%; left: 100%; }
}

/* ==========================================================================
   REUSABLE UTILITIES & COMPONENTS
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

.section-padding {
    padding: 110px 0;
    position: relative;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 850;
}

.badge {
    display: inline-block;
    padding: 5px 14px;
    background: rgba(212, 175, 55, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 4px; /* Keskin modern çizgiler */
    color: var(--primary-accent);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

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

.section-header .sub-title {
    color: var(--primary-accent);
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    display: block;
    margin-bottom: 12px;
}

.section-header .section-title {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.section-header .line {
    width: 40px;
    height: 2px;
    background: var(--primary-accent);
    margin: 18px auto 0;
    border-radius: 0;
}

/* ==========================================================================
   BUTTONS (Mechanical Matte Style)
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 11px 26px;
    border-radius: 4px; /* Keskin köşeler */
    font-family: var(--font-title);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.btn-primary {
    background: var(--primary-accent);
    color: #000000;
    border: 1px solid var(--primary-accent);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: var(--accent-gold-light);
    border-color: var(--accent-gold-light);
    box-shadow: var(--shadow-neon-gold);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    background: rgba(212, 175, 55, 0.05);
    border-color: var(--primary-accent);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-accent);
    border: 1px solid var(--primary-accent);
}

.btn-outline:hover {
    background: var(--primary-accent);
    color: #000000;
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon-gold);
}

.btn-sm {
    padding: 7px 16px;
    font-size: 0.8rem;
}

.btn-full {
    width: 100%;
}

/* ==========================================================================
   HEADER / NAVBAR (Blinking Terminal Cursor Logo)
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(7, 7, 7, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--divider-color);
    transition: var(--transition-normal);
}

.header.scrolled {
    background: #070707;
    height: 70px;
    box-shadow: var(--shadow-sm);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    transition: var(--transition-normal);
}

.header.scrolled .navbar {
    height: 70px;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

/* Logo Blinking Cursor Effect */
.logo::after {
    content: '_';
    color: var(--primary-accent);
    animation: blinkCursor 1s infinite steps(2, start);
}

@keyframes blinkCursor {
    to { visibility: hidden; }
}

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

.nav-link {
    font-family: var(--font-title);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--primary-accent);
    transition: var(--transition-normal);
}

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

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

/* Hamburger menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: none;
    padding: 4px;
}

.menu-toggle .bar {
    width: 22px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 0;
    transition: var(--transition-normal);
}

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

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 50px;
    align-items: center;
    padding-bottom: 70px;
}

.hero-info {
    position: relative;
    z-index: 10;
}

.hero-title {
    font-size: 3.4rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 580px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 35px;
}

/* ==========================================================================
   INTERACTIVE DRONE BLUEPRINT & HOTSPOTS
   ========================================================================== */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.visual-card-wrapper {
    position: relative;
    width: 100%;
    max-width: 480px;
    z-index: 5;
    background-color: rgba(15, 15, 15, 0.85);
    border: 1px solid var(--card-border);
}

.visual-card {
    background: transparent;
    overflow: hidden;
}

.card-header {
    background: rgba(255, 255, 255, 0.02);
    padding: 10px 18px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--divider-color);
}

.card-header .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot.red { background-color: rgba(255, 255, 255, 0.15); border: 1px solid rgba(255,255,255,0.2); }
.dot.yellow { background-color: rgba(255, 255, 255, 0.15); border: 1px solid rgba(255,255,255,0.2); }
.dot.green { background-color: var(--primary-accent); }

.card-header .tab-title {
    margin-left: 8px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.blueprint-container {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--divider-color);
}

.blueprint-wrapper {
    position: relative;
    width: 100%;
    max-width: 300px;
    aspect-ratio: 1/1;
    margin: 0 auto;
}

.drone-blueprint-svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Hotspot Nodes */
.hotspot-node {
    position: absolute;
    width: 12px;
    height: 12px;
    background-color: var(--primary-accent);
    border-radius: 50%;
    cursor: pointer;
    transform: translate(-50%, -50%);
    z-index: 20;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.hotspot-node::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0; left: 0;
    border-radius: 50%;
    border: 2px solid var(--accent-gold-light);
    transform: scale(1);
    opacity: 1;
    animation: hotspotPulse 1.8s infinite ease-out;
}

.hotspot-node:hover, .hotspot-node.active {
    transform: translate(-50%, -50%) scale(1.3);
    background-color: #ffffff;
}

@keyframes hotspotPulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(2.8); opacity: 0; }
}

/* Blueprint Interactive Details Readout Panel */
.blueprint-details-panel {
    padding: 18px 20px;
    background: rgba(0, 0, 0, 0.4);
    min-height: 140px;
}

.panel-header-mono {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--primary-accent);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
    font-weight: bold;
}

.panel-body-mono {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.6;
    white-space: pre-line; /* Renders line breaks nicely */
}

/* ==========================================================================
   PRE-FLIGHT DIAGNOSTIC CONSOLE TERMINAL
   ========================================================================== */
.preflight-simulator-wrapper {
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    padding: 16px;
    max-width: 580px;
    width: 100%;
    margin-top: 15px;
}

.simulator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--divider-color);
    padding-bottom: 10px;
    margin-bottom: 12px;
}

.sim-title {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: bold;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.btn-diag {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: bold;
    background: rgba(212, 175, 55, 0.05);
    border: 1px solid var(--primary-accent);
    color: var(--primary-accent);
    padding: 4px 10px;
    border-radius: 3px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.btn-diag:hover {
    background: var(--primary-accent);
    color: #000000;
}

.icon-pulse {
    width: 6px;
    height: 6px;
    background: var(--primary-accent);
    border-radius: 50%;
    display: inline-block;
    animation: flashDiagnostic 1.5s infinite steps(2, start);
}

@keyframes flashDiagnostic {
    to { opacity: 0.2; }
}

.simulator-console {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: #e2e8f0;
    line-height: 1.5;
    background: rgba(0, 0, 0, 0.3);
    padding: 12px;
    border-radius: 3px;
    min-height: 110px;
    max-height: 150px;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

.console-line {
    margin-bottom: 4px;
}

.console-line.text-accent { color: var(--primary-accent); }
.console-line.text-green { color: #10b981; }
.console-line.text-muted { color: var(--text-muted); }

/* Scroll indicator */
.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    text-align: center;
}

.scroll-down a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.scroll-down a:hover {
    color: var(--primary-accent);
}

.mouse {
    width: 20px;
    height: 34px;
    border: 1.5px solid var(--text-muted);
    border-radius: 10px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 6px;
    background-color: var(--primary-accent);
    border-radius: 2px;
    animation: scrollMouse 1.5s infinite ease-in-out;
}

@keyframes scrollMouse {
    0% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, 9px); opacity: 0; }
}

/* ==========================================================================
   STATS SECTION
   ========================================================================== */
.stats-section {
    background: rgba(15, 15, 15, 0.6);
    border-top: 1px solid var(--divider-color);
    border-bottom: 1px solid var(--divider-color);
    padding: 50px 0;
    position: relative;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    position: relative;
}

.stat-card:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -12px;
    transform: translateY(-50%);
    width: 1px;
    height: 40px;
    background: var(--divider-color);
}

.stat-number {
    font-family: var(--font-title);
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--primary-accent);
    margin-bottom: 4px;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   ABOUT ME SECTION
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 50px;
    align-items: center;
}

.profile-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px; /* Keskin modern tasarım */
    padding: 35px 24px;
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-accent);
}

.profile-avatar {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background: linear-gradient(135deg, #181818, var(--primary-accent));
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--card-border);
}

.profile-avatar span {
    font-family: var(--font-title);
    font-size: 3rem;
    font-weight: 800;
    color: #ffffff;
}

.profile-card h3 {
    font-size: 1.4rem;
    margin-bottom: 6px;
}

.profile-card p {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-gold-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
}

.profile-socials {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.social-icon {
    width: 36px;
    height: 36px;
    border-radius: 4px; /* Keskin */
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-icon:hover {
    background: var(--primary-accent);
    color: #000000;
    transform: translateY(-2px);
}

.about-content-side h3 {
    font-size: 1.7rem;
    margin-bottom: 18px;
}

.about-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.about-tabs {
    margin-top: 35px;
}

.tabs-header {
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--divider-color);
    padding-bottom: 10px;
    margin-bottom: 24px;
}

.tab-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.8rem;
    padding: 6px 14px;
    border-radius: 3px;
    transition: var(--transition-normal);
    text-transform: uppercase;
}

.tab-btn.active {
    color: var(--primary-accent);
    border-color: var(--card-border);
    background: rgba(212, 175, 55, 0.04);
}

.tab-content {
    display: none;
    animation: tabFade 0.3s ease;
}

.tab-content.active {
    display: block;
}

.tab-content ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 24px;
}

.tab-content ul li {
    position: relative;
    padding-left: 18px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-primary);
}

.tab-content ul li::before {
    content: '➔';
    color: var(--primary-accent);
    font-size: 0.75rem;
    position: absolute;
    left: 0;
    top: 0;
}

/* ==========================================================================
   SKILLS SECTION (Datasheet & BOM List Layout)
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skill-category-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px; /* Keskin */
    padding: 30px 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
}

.skill-category-card:hover {
    transform: translateY(-4px);
    border-color: var(--card-border-hover);
    box-shadow: var(--shadow-md), var(--shadow-neon-gold);
}

.card-icon {
    width: 42px;
    height: 42px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.card-icon.gold {
    background: rgba(212, 175, 55, 0.05);
    border: 1px solid var(--card-border);
    color: var(--primary-accent);
}

.skill-category-card h3 {
    font-size: 1.15rem;
    margin-bottom: 24px;
    border-bottom: 1px dashed var(--divider-color);
    padding-bottom: 12px;
    font-family: var(--font-title);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Engineering Datasheet Styling instead of progress bars */
.skills-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-item {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.02);
    padding: 10px 14px;
    border-radius: 3px;
    display: flex;
    align-items: center;
}

.skill-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    width: 100%;
}

.skill-info::before {
    content: '▪';
    color: var(--primary-accent);
    font-size: 0.6rem;
    line-height: 1;
}

.skill-info span {
    color: var(--text-primary);
    font-weight: 600;
}

/* ==========================================================================
   PROJECTS SECTION (Mechanical Blueprint Cards)
   ========================================================================== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 45px;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    padding: 8px 18px;
    border-radius: 4px; /* Keskin */
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.8rem;
    transition: var(--transition-normal);
    text-transform: uppercase;
}

.filter-btn:hover, .filter-btn.active {
    background: var(--primary-accent);
    color: #000000;
    border-color: var(--primary-accent);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px; /* Keskin */
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--card-border-hover);
    box-shadow: var(--shadow-md), var(--shadow-neon-gold);
}

.project-img-wrapper {
    position: relative;
    height: 180px;
    overflow: hidden;
    background: #050505;
    border-bottom: 1px solid var(--divider-color);
}

.project-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(212, 175, 55, 0.1);
    transition: var(--transition-normal);
}

.gradient-1 {
    /* Technical Drafting Grid inside image area */
    background: 
        radial-gradient(rgba(212, 175, 55, 0.04) 1px, transparent 1px) #050505;
    background-size: 15px 15px;
}

.project-card:hover .project-img-placeholder {
    transform: scale(1.03);
    color: var(--primary-accent);
}

.project-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 3px 10px;
    background: rgba(7, 7, 7, 0.9);
    border: 1px solid var(--card-border);
    border-radius: 2px;
    color: var(--primary-accent);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.project-content {
    padding: 24px;
}

.project-content h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-family: var(--font-title);
    transition: var(--transition-normal);
}

.project-card:hover .project-content h3 {
    color: var(--primary-accent);
}

.project-content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
    line-height: 1.5;
}

.project-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.project-tags span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 2px 8px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 2px;
    color: var(--text-secondary);
}

.project-links {
    display: flex;
}

.project-link {
    background: rgba(212, 175, 55, 0.04);
    border: 1px solid var(--primary-accent);
    padding: 7px 14px;
    border-radius: 3px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    font-weight: bold;
    color: var(--primary-accent);
    transition: var(--transition-normal);
}

.project-link:hover {
    background: var(--primary-accent);
    color: #000000;
    transform: translateY(-1px);
    box-shadow: var(--shadow-neon-gold);
}

/* ==========================================================================
   TIMELINE / PCB TRACE TIMELINE
   ========================================================================== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

/* Altın PCB Bakır Yolu (PCB Gold Trace Path) */
.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--primary-accent);
    box-shadow: 0 0 6px rgba(212, 175, 55, 0.3);
    top: 0;
    bottom: 0;
    left: 40px;
}

.timeline-item {
    padding: 0 0 45px 80px;
    position: relative;
}

/* PCB Solder Pad Slaytı (Horizontal Copper Branch) */
.timeline-item::before {
    content: '';
    position: absolute;
    width: 28px;
    height: 2px;
    background: var(--primary-accent);
    box-shadow: 0 0 4px rgba(212, 175, 55, 0.2);
    left: 42px;
    top: 14px;
}

/* PCB Solder Pad Node */
.timeline-dot {
    position: absolute;
    width: 14px;
    height: 14px;
    border-radius: 2px; /* Kare SMD Solder Pad Görünümü */
    background: var(--bg-primary);
    border: 2px solid var(--primary-accent);
    left: 34px;
    top: 8px;
    z-index: 2;
    box-shadow: 0 0 6px rgba(212, 175, 55, 0.4);
    transition: var(--transition-normal);
}

.timeline-item:hover .timeline-dot {
    background: var(--primary-accent);
    transform: scale(1.15) rotate(45deg); /* Havalı entegre pad hissi */
}

.timeline-date {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--primary-accent);
    font-size: 0.8rem;
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 22px;
    border-radius: 4px; /* Keskin */
    position: relative;
}

.timeline-content h3 {
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.timeline-content .company {
    display: inline-block;
    color: var(--accent-gold-light);
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.timeline-content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ==========================================================================
   CONTACT SECTION & FORM
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 50px;
}

.contact-info-panel h3 {
    font-size: 1.6rem;
    margin-bottom: 12px;
}

.panel-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 35px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 14px;
}

.detail-icon {
    width: 38px;
    height: 38px;
    border-radius: 4px;
    background: rgba(212, 175, 55, 0.03);
    border: 1px solid var(--card-border);
    color: var(--primary-accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.detail-text span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 0.5px;
}

.detail-text a, .detail-text p {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.detail-text a:hover {
    color: var(--primary-accent);
}

.cv-download-box {
    background: rgba(0, 0, 0, 0.2);
    border: 1px dashed var(--card-border);
    padding: 20px;
    border-radius: 4px;
}

.cv-download-box p {
    font-size: 0.85rem;
    margin-bottom: 14px;
    color: var(--text-secondary);
}

/* Form Panel */
.contact-form-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 35px;
    border-radius: 4px; /* Keskin */
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.form-group label {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input, .form-group textarea {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--card-border);
    border-radius: 3px;
    padding: 11px 14px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--transition-normal);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-accent);
    background: rgba(0, 0, 0, 0.6);
}

.form-feedback {
    margin-top: 15px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-feedback.success { color: var(--primary-accent); display: block; }
.form-feedback.error { color: #ef4444; display: block; }

/* ==========================================================================
   FOOTER (Mechanical Signature Note Suffix)
   ========================================================================== */
.footer {
    border-top: 1px solid var(--divider-color);
    padding: 35px 0;
    background-color: #050505;
    flex-shrink: 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.footer-motto-signature {
    text-align: right;
}

.personal-signature {
    font-family: 'Courier New', Courier, monospace; /* Clean technical handwriting fallback */
    font-style: italic;
    font-size: 0.85rem;
    color: var(--primary-accent);
    margin-top: 4px;
    letter-spacing: 1px;
    font-weight: bold;
}

/* ==========================================================================
   RESPONSIVE DESIGN RULES
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-title { font-size: 2.8rem; }
    .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 50px; }
    .hero-info { display: flex; flex-direction: column; align-items: center; }
    .hero-description { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-image-side { max-width: 360px; margin: 0 auto; width: 100%; }
    
    .skills-grid { grid-template-columns: repeat(2, 1fr); }
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    .section-padding { padding: 80px 0; }
    .section-header .section-title { font-size: 1.85rem; }
    
    .menu-toggle { display: flex; z-index: 102; }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: rgba(7, 7, 7, 0.98);
        border-left: 1px solid var(--card-border);
        z-index: 101;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition-slow);
    }
    
    .nav-menu.open { right: 0; }
    .nav-menu ul { flex-direction: column; align-items: center; gap: 28px; }
    .nav-link { font-size: 1.05rem; }
    
    .menu-toggle.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .menu-toggle.active .bar:nth-child(2) { opacity: 0; }
    .menu-toggle.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .stat-card:nth-child(2)::after { display: none; }
    .stat-card:not(:last-child)::after { right: -8px; }
    
    .skills-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
    
    .timeline::after { left: 20px; }
    .timeline-item { padding-left: 50px; }
    .timeline-item::before { left: 22px; width: 18px; }
    .timeline-dot { left: 14px; }
    
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .footer-content { flex-direction: column; gap: 14px; text-align: center; }
    .footer-motto-signature { text-align: center; }
    
    /* Mobile-Specific Cleanups */
    .nav-actions .btn {
        display: none;
    }
    
    .circuit-bg-decor {
        width: 160px !important;
        height: 160px !important;
        opacity: 0.02 !important; /* Extremely faint on mobile to ensure zero interference with text */
    }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2.1rem; }
    .hero-buttons .btn { width: 100%; }
    .stats-grid { grid-template-columns: 1fr; gap: 25px; }
    .stat-card::after { display: none !important; }
    .tab-content ul { grid-template-columns: 1fr; }
    .contact-form-panel { padding: 20px; }
    
    /* Perfect mobile sizing for EEE workbench blueprint */
    .cad-border { padding: 8px; }
    .blueprint-container { padding: 10px; }
    .panel-body-mono { font-size: 0.72rem; }
}

/* ==========================================================================
   TIMELINE DOUBLE COLUMN LAYOUT & ACHIEVEMENTS
   ========================================================================== */
.timeline-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 45px;
    margin-top: 40px;
}

.timeline-col-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--divider-color);
    padding-bottom: 10px;
    font-family: var(--font-title);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timeline-col-title .col-icon {
    color: var(--primary-accent);
}

@media (max-width: 992px) {
    .timeline-grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }
}

.achievements-wrapper {
    margin-top: 55px;
}

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

.achievement-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-left: 2px solid var(--primary-accent);
    padding: 20px;
    border-radius: 4px; /* Keskin */
    transition: var(--transition-normal);
}

.achievement-card:hover {
    transform: translateY(-2px);
    border-color: var(--card-border-hover);
    box-shadow: var(--shadow-sm), var(--shadow-neon-gold);
}

.achievement-card h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.achievement-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

@media (max-width: 768px) {
    .achievements-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* ==========================================================================
   GLASSMORPHIC MODAL SYSTEM - PREMIUM CAD DETAILS
   ========================================================================== */
.project-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.project-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(3, 3, 3, 0.9);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.modal-content-wrapper {
    position: relative;
    background: #0f0f0f;
    border: 1px solid var(--primary-accent);
    border-radius: 4px; /* Keskin */
    width: 90%;
    max-width: 780px;
    max-height: 85vh;
    overflow-y: auto;
    z-index: 1001;
    box-shadow: var(--shadow-lg), 0 0 30px rgba(212, 175, 55, 0.15);
    transform: scale(0.95) translateY(15px);
    transition: transform var(--transition-normal);
}

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

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 4px; /* Keskin */
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: var(--primary-accent);
    color: #000000;
    transform: rotate(90deg);
}

.modal-body {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
}

@media (max-width: 768px) {
    .modal-body {
        grid-template-columns: 1fr;
    }
}

.modal-image-side {
    background: 
        radial-gradient(rgba(212, 175, 55, 0.04) 1px, transparent 1px) #050505;
    background-size: 15px 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(212, 175, 55, 0.15);
    min-height: 250px;
    border-right: 1px solid var(--divider-color);
}

@media (max-width: 768px) {
    .modal-image-side {
        border-right: none;
        border-bottom: 1px solid var(--divider-color);
        min-height: 180px;
    }
}

.modal-info-side {
    padding: 35px;
}

.modal-badge {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(212, 175, 55, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 2px;
    color: var(--primary-accent);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.modal-info-side h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-family: var(--font-title);
}

.modal-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 25px;
}

.specs-box h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-family: var(--font-title);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modal-specs {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.modal-specs li {
    position: relative;
    padding-left: 20px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.modal-specs li::before {
    content: '➔';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary-accent);
}

/* Premium Project Flow block diagrams */
.project-flow-wrapper {
    margin-bottom: 20px;
    border: 1px solid var(--card-border);
    border-radius: 4px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.3);
}

.flow-title {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-gold-light);
    margin-bottom: 8px;
    font-weight: bold;
    text-transform: uppercase;
}

.flow-steps {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

.flow-step {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 3px 8px;
    color: var(--text-primary);
    border-radius: 2px;
}

.flow-arrow {
    color: var(--primary-accent);
    font-size: 0.75rem;
}