/* CSS Custom Properties */
:root {
    --primary-color: #0a0f1c;
    --secondary-color: #1a2332;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --border-color: #334155;
    --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--primary-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Styles */
::selection {
    background-color: var(--accent-color);
    color: var(--text-primary);
}

/* Project Cards Additional Styles */
.feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

.integration-card {
    transition: var(--transition);
}

.integration-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

/* Navigation */
.navbar {
    background: rgba(10, 15, 28, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--accent-color) !important;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--accent-hover) !important;
    transform: translateY(-2px);
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary) !important;
    background: rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.nav-link i {
    margin-right: 0.5rem;
    font-size: 0.9rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-image {
    position: relative;
}

.hero-image::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.6;
    filter: blur(20px);
    z-index: -1;
}

.hero-image img {
    border: 4px solid rgba(59, 130, 246, 0.3);
    transition: var(--transition);
}

.hero-image:hover img {
    transform: scale(1.05);
    border-color: var(--accent-color);
}

.hero-photo {
    max-width: 300px;
    width: 100%;
    height: 300px;
    object-fit: cover;
}

@media (max-width: 768px) {
    .hero-photo {
        max-width: 250px;
        height: 250px;
    }
}

@media (max-width: 576px) {
    .hero-photo {
        max-width: 200px;
        height: 200px;
    }
}

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

.hero-greeting {
    font-size: 1.5rem;
    color: var(--accent-color);
    font-weight: 500;
    opacity: 0.9;
    animation: fadeInDown 1s ease-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 0.9;
        transform: translateY(0);
    }
}

.hero-roles {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
    min-height: 60px; /* Typing effect için sabit yükseklik */
}

.role-text {
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 25px;
    border: 1px solid rgba(59, 130, 246, 0.3);
    transition: var(--transition);
}

.role-text:hover {
    background: rgba(59, 130, 246, 0.2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.role-divider {
    color: var(--text-secondary);
    font-size: 1.5rem;
    font-weight: bold;
}

@media (max-width: 576px) {
    .hero-roles {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .role-divider {
        display: none;
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--accent-color);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.section-title i {
    font-size: 2rem;
    color: var(--accent-color);
}

/* Buttons */
.btn {
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius);
    border: none;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-secondary);
    color: var(--text-primary);
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    background: var(--gradient-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    color: var(--text-primary);
}

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

.btn-outline-light:hover {
    background: var(--text-secondary);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Cards */
.card {
    background: rgba(26, 35, 50, 0.8);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    backdrop-filter: blur(20px);
    transition: var(--transition);
    overflow: hidden;
}

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

.card-title {
    color: var(--accent-color);
    font-weight: 600;
}

.card-text {
    color: var(--text-secondary);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background: rgba(26, 35, 50, 0.6);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    background: rgba(59, 130, 246, 0.1);
}

.skill-item i {
    font-size: 2rem;
    color: var(--accent-color);
}

.skill-item span {
    font-weight: 500;
    color: var(--text-secondary);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-marker {
    position: absolute;
    left: -1.5rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    background: var(--accent-color);
    border-radius: 50%;
    border: 3px solid var(--primary-color);
    z-index: 1;
}

.timeline-content {
    background: rgba(26, 35, 50, 0.6);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--accent-color);
    transform: translateX(5px);
}

.timeline-title {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-subtitle {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.timeline-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Skills Container */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: rgba(26, 35, 50, 0.6);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--accent-color);
    transform: translateY(-3px);
}

.skill-category h5 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(59, 130, 246, 0.3);
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--accent-color);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* Project Cards */
.project-card {
    background: rgba(26, 35, 50, 0.8);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    height: 100%;
}

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

.project-image {
    position: relative;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.project-links {
    display: flex;
    gap: 1rem;
}

.project-content {
    padding: 1.5rem;
}

.project-title {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

.tag {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Contact Section */
.contact-info {
    background: rgba(26, 35, 50, 0.6);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    height: 100%;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-item:hover {
    background: rgba(59, 130, 246, 0.2);
    transform: translateX(5px);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent-color);
    min-width: 2rem;
}

.contact-item .fab.fa-linkedin {
    color: var(--accent-color);
}

.contact-item .fab.fa-github {
    color: var(--accent-color);
}

.contact-item h5 {
    color: var(--accent-color);
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-link {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.contact-form {
    background: rgba(26, 35, 50, 0.6);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.form-label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-control {
    background: rgba(10, 15, 28, 0.8) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    border-radius: var(--border-radius) !important;
    padding: 0.75rem !important;
    transition: var(--transition) !important;
}

.form-control:focus {
    border-color: var(--accent-color) !important;
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25) !important;
}

.form-control::placeholder {
    color: var(--text-muted) !important;
}

/* Social Links */
.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-color);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.social-link:hover {
    background: var(--accent-color);
    color: var(--text-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-light);
}

/* Footer */
.bg-dark {
    background: var(--secondary-color) !important;
    border-top: 1px solid var(--border-color);
}

footer .social-links a {
    color: var(--text-secondary);
    transition: var(--transition);
}

footer .social-links a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 1.5s infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline {
        padding-left: 1rem;
    }
    
    .timeline-marker {
        left: -1rem;
    }
    
    .project-links {
        flex-direction: column;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-item {
        flex-direction: row;
        text-align: left;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.p-4 {
    padding: 1.5rem;
}

.rounded {
    border-radius: var(--border-radius);
}

.shadow {
    box-shadow: var(--shadow-light);
}

.shadow-lg {
    box-shadow: var(--shadow-heavy);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 4px;
}

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

/* Notification System */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    min-width: 300px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification-success {
    background: rgba(16, 185, 129, 0.9);
    border-left: 4px solid var(--success-color);
}

.notification-error {
    background: rgba(239, 68, 68, 0.9);
    border-left: 4px solid var(--error-color);
}

.notification-info {
    background: rgba(59, 130, 246, 0.9);
    border-left: 4px solid var(--accent-color);
}

.notification-content {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: white;
    font-weight: 500;
}

.notification-content i {
    margin-right: 0.75rem;
    font-size: 1.1rem;
}

.notification:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

/* Responsive notifications */
@media (max-width: 576px) {
    .notification {
        top: 10px;
        right: 10px;
        left: 10px;
        min-width: auto;
    }
}

/* Project Modal Styles */
.modal-content {
    background: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    background: var(--primary-color);
}

.modal-title {
    color: var(--text-primary);
    font-weight: 600;
}

.btn-close {
    filter: invert(1);
}

.modal-body {
    padding: 2rem;
}

.project-modal-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
}

.project-modal-gallery {
    max-height: 200px;
    overflow-y: auto;
}

.gallery-image {
    transition: var(--transition);
    border: 2px solid transparent;
}

.gallery-image:hover {
    border-color: var(--accent-color);
    transform: scale(1.05);
}

.project-modal-info {
    color: var(--text-primary);
}

.project-modal-details {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.detail-item {
    margin-bottom: 1rem;
}

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

.detail-item strong {
    color: var(--accent-color);
    font-weight: 600;
}

.detail-item p, .detail-item li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.detail-item ul {
    padding-left: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    background: var(--primary-color);
}

.modal-footer .btn {
    margin-right: 0.5rem;
}

/* Project card hover effects */
.project-card {
    cursor: pointer;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.project-detail-btn {
    background: rgba(255, 255, 255, 0.9) !important;
    border: none !important;
    color: var(--primary-color) !important;
    font-weight: 500;
    transition: var(--transition);
}

.project-detail-btn:hover {
    background: white !important;
    transform: translateY(-2px);
}

/* Responsive modal */
@media (max-width: 768px) {
    .modal-dialog {
        margin: 1rem;
    }
    
    .modal-body {
        padding: 1rem;
    }
    
    .project-modal-details {
        padding: 1rem;
    }
}