/* ===========================
   KURUMSAL TASARIM - AHMET AYDIN
   =========================== */

/* Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Kurumsal Renkler - Profesyonel Palet */
    --primary-color: #1e3a8a;      /* Lacivert - Ana renk */
    --secondary-color: #3b82f6;    /* Açık Mavi - Vurgu */
    --accent-color: #0ea5e9;       /* Açık Mavi - Hover */
    --text-primary: #1f2937;       /* Koyu Gri - Başlıklar */
    --text-secondary: #6b7280;     /* Orta Gri - Metinler */
    --bg-light: #f9fafb;           /* Açık Gri - Arkaplan */
    --bg-white: #ffffff;           /* Beyaz */
    --border-color: #e5e7eb;       /* Çizgi rengi */
    
    /* Shadows - Daha derinlikli */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Typography - Profesyonel */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.75;
    
    /* Spacing - Tutarlı */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Border Radius - Yumuşak köşeler */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    line-height: var(--line-height-base);
    background: var(--bg-white);
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: 1rem 0;
}

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

.nav-brand .brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    padding: 8rem 0 4rem;
    background: var(--bg-light);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-greeting {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-title {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: #1e40af;
}

.btn-outline {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.hero-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
}

/* ===========================
   Section Styles
   =========================== */
section {
    padding: 6rem 0;
}

section:first-of-type {
    padding-top: 4rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin: 0 auto 1rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-top: 1rem;
}

/* ===========================
   About Section
   =========================== */
.about {
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: start;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.about-text h3 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.info-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 6px;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.info-item strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.info-item span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===========================
   Stats Section
   =========================== */
.stats {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* ===========================
   Experience Section
   =========================== */
.experience {
    background: var(--bg-light);
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-year {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.timeline-content h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===========================
   Skills Section
   =========================== */
.skills {
    background: var(--bg-white);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.skill-card {
    text-align: center;
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
}

.skill-card:hover {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-md);
}

.skill-card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.skill-card h3 {
    font-size: 1.125rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.skill-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===========================
   Gallery Section
   =========================== */
.gallery {
    background: var(--bg-light);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Gallery Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-image {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}

.modal-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: none;
    border: none;
    color: white;
    font-size: 3rem;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--secondary-color);
}

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    font-size: 2rem;
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.modal-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-prev {
    left: 2rem;
}

.modal-next {
    right: 2rem;
}

/* ===========================
   Contact Section
   =========================== */
.contact {
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.contact-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.contact-icon i {
    font-size: 1.75rem;
    color: white;
}

.contact-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.contact-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.btn-link:hover {
    color: var(--primary-color);
    gap: 0.75rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
    transform: translateY(-3px);
}

.social-icon i {
    font-size: 1.25rem;
}

.contact-map {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    height: 100%;
    min-height: 500px;
    border: 1px solid var(--border-color);
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    min-height: 500px;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 2rem 0 1rem;
    text-align: center;
}

.footer-content {
    padding: 1rem 0;
}

.footer-developer {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-developer a {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.footer-developer a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.developer-logo {
    height: 30px;
    width: auto;
    filter: brightness(0) invert(1);
}

/* ===========================
   Back to Top Button
   =========================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-color);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-image {
        order: -1;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 5rem 2rem;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero-name {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .about-info {
        grid-template-columns: 1fr;
    }
    
    .modal-nav {
        padding: 0.75rem;
        font-size: 1.5rem;
    }
    
    .modal-prev {
        left: 1rem;
    }
    
    .modal-next {
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    section {
        padding: 3rem 0;
    }
}