@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Inter:wght@300;400;500;600&family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --bg-color: #080808;
    --card-bg: rgba(15, 15, 15, 0.8); 
    --accent-color: #00f5d4; 
    --accent-glow: rgba(0, 245, 212, 0.15);
    --accent-hover: #00e0c2;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --border-color: #1e293b;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition-speed: 0.25s;
    --glass-bg: rgba(255, 255, 255, 0.02);
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at center, #111 0%, #050505 100%);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px; /* Kurumsal bir duruş için optimum paragraf boyutu */
    letter-spacing: 0.2px;
    line-height: 1.7; /* Okunabilirliği artıran satır aralığı */
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    text-transform: uppercase;
    letter-spacing: 2px;
}

.mono-text {
    font-family: var(--font-mono);
    color: var(--accent-color);
}

/* Layout Utilities */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 100px 0;
}


/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    background: var(--bg-color);
    opacity: 0.95;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-speed);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    text-decoration: none;
    font-family: var(--font-mono);
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: var(--transition-speed);
}

.nav-links a:hover {
    color: var(--accent-color);
}

/* Hero Section */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at center, var(--glass-bg) 0%, var(--bg-color) 70%);
    transition: background var(--transition-speed);
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 50% 50%, var(--accent-glow) 0%, transparent 80%);
    pointer-events: none;
    opacity: 0.5;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    margin-bottom: 1rem;
    font-weight: 800;
}

.hero-content .title-glitch {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    color: var(--accent-color);
    display: inline-block;
    min-height: 1.5rem;
    vertical-align: bottom;
    margin-bottom: 1.5rem;
    border-right: 2px solid var(--accent-color);
    padding-right: 5px;
    animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
    from, to { border-color: transparent }
    50% { border-color: var(--accent-color) }
}

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

/* About Section */
#about .about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

#about p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.skill-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed);
    backdrop-filter: blur(12px);
    border-radius: 4px;
}

.skill-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-5px);
}

.skill-card h3 {
    margin-bottom: 1.5rem;
    font-size: 1rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.skill-meter-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    width: 100%;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.6rem;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.skill-bar-bg {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    overflow: hidden;
    position: relative;
}

.skill-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #3b82f6);
    width: 0;
    transition: width 2s cubic-bezier(0.1, 0.5, 0.5, 1);
    box-shadow: 0 0 10px var(--accent-glow);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    font-family: var(--font-mono);
    padding: 0.4rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
}

/* Projects Slider (New) */
.projects-slider-container {
    width: 100%;
    overflow-x: auto;
    padding: 2rem 0;
    cursor: grab;
    scrollbar-width: none; /* Firefox */
}

.projects-slider-container::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.projects-track {
    display: flex;
    gap: 2rem;
    padding: 0 4rem;
    width: max-content;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    min-width: 400px;
    height: 100%;
    transition: all var(--transition-speed);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px); /* Glassmorphism */
    border-radius: 4px;
}

.project-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px var(--accent-glow);
    transform: translateY(-5px);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tech span {
    font-family: var(--font-mono);
    padding: 0.2rem 0.6rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    font-size: 0.75rem;
    border-radius: 3px;
    color: var(--accent-color);
}

.btn-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 1px solid var(--accent-color);
    background: transparent;
    color: var(--accent-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-speed);
}

.btn-circle:hover {
    background: var(--accent-color);
    color: black;
}

/* Language UI */
.lang-toggle {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    z-index: 2000;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
    transition: var(--transition-speed);
}

.lang-toggle:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-glow);
}

.lang-toggle img {
    width: 24px;
    height: auto;
    border-radius: 2px;
}

.lang-toggle span {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
}

.lang-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s;
}

.lang-panel.hidden {
    display: none;
    opacity: 0;
}

.lang-panel-content {
    background: var(--card-bg);
    border: 1px solid var(--accent-color);
    padding: 3rem;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 0 30px var(--accent-glow);
}

.lang-panel-text {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.lang-panel-btns {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-alt {
    border-color: var(--text-secondary);
    color: var(--text-secondary);
}

.btn-alt:hover {
    background: var(--text-secondary);
    color: black;
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-color), #00aaff);
    color: black;
    border: none;
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    transition: var(--transition-speed);
    text-align: center;
    clip-path: polygon(0% 0%, 95% 0%, 100% 30%, 100% 100%, 5% 100%, 0% 70%);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--accent-glow);
    filter: brightness(1.2);
}

/* Contact Section */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

input, textarea {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1rem;
    color: var(--text-primary);
    font-family: var(--font-heading);
    transition: var(--transition-speed);
}

input:focus, textarea:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 10px var(--accent-glow);
}

input:focus:invalid:not(:placeholder-shown), textarea:focus:invalid:not(:placeholder-shown) {
    border-color: #ff3232;
    box-shadow: 0 0 10px rgba(255, 50, 50, 0.2);
}

.form-status {
    padding: 1rem;
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(0, 255, 170, 0.1);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.form-status.error {
    display: block;
    background: rgba(255, 50, 50, 0.1);
    color: #ff3232;
    border: 1px solid #ff3232;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: var(--transition-speed);
}

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

/* Footer */
footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    #about .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}