/* ===== CLEANED PORTFOLIO CSS ===== */
/* Tüm duplikasyonlar temizlendi, modal animasyonları eski haline getirildi */

/* CSS Variables */
:root {
    --primary-color: #4d61fc;
    --primary-light: #6979f8;
    --secondary-color: #6c757d;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --white: #ffffff;
    --success-color: #28a745;
    --danger-color: #dc3545;
    
    --font-family: 'Poppins', sans-serif;
    --transition: 0.3s ease;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --border-radius: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark-color);
    background: var(--light-color);
    overflow-x: hidden;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 6px;
    background: var(--primary-color);
    color: var(--white);
    padding: 8px 16px;
    text-decoration: none;
    border-radius: var(--border-radius);
    z-index: 1000;
    opacity: 0;
    transition: all 0.3s ease;
}

.skip-link:focus {
    top: 6px;
    opacity: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.8rem; }

p {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

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

ul { list-style: none; }
img { max-width: 100%; height: auto; }

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

section {
    padding: 5rem 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    margin-right: 0.5rem;
}

.btn.primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn.secondary {
    background: transparent;
    color: var(--dark-color);
    border-color: var(--dark-color);
}

.btn.secondary:hover {
    background: var(--dark-color);
    color: var(--white);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-line {
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    margin: 0 auto 1rem;
    border-radius: 2px;
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* Particles */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader {
    width: 40px;
    height: 40px;
    border: 4px solid #e3e3e3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
}

.navbar.sticky {
    background: rgba(248, 249, 250, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: var(--shadow);
    padding: 0.8rem 0;
}

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

.logo a {
    display: inline-block;
    transition: var(--transition);
}

.logo a:hover {
    transform: scale(1.05);
}

.logo-img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.navbar.sticky .logo-img {
    height: 35px;
}

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

.nav-menu a {
    color: var(--dark-color);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.nav-menu a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition);
}

.nav-menu a:hover::before,
.nav-menu a.active::before {
    width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    border: none;
    background: transparent;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--dark-color);
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, rgba(77, 97, 252, 0.05), rgba(105, 121, 248, 0.05));
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.hero h1 {
    margin-bottom: 1.5rem;
    font-size: clamp(2.5rem, 5vw, 4rem);
}

.typed-text {
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    margin-bottom: 2rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
    justify-content: space-evenly;
    max-width: 240px;
    margin: 0 auto;
    padding: 5px;
}

.social-icons a {
    width: 44px;
    height: 44px;
    background: rgba(77, 97, 252, 0.1);
    border-radius: var(--border-radius);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(77, 97, 252, 0.2);
    transition: var(--transition);
}

.social-icons a:hover {
    transform: translateY(-4px);
    background: rgba(77, 97, 252, 0.2);
}

.scroll-down {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-down span {
    display: block;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--dark-color);
    border-right: 2px solid var(--dark-color);
    transform: rotate(45deg);
    margin: 0 0 5px 5px;
    animation: scrollDown 2s infinite;
}

.scroll-down span:nth-child(2) { animation-delay: 0.2s; }
.scroll-down span:nth-child(3) { animation-delay: 0.4s; }

@keyframes scrollDown {
    0%, 50% { opacity: 0; }
    100% { opacity: 1; }
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-image {
    position: relative;
}

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

.experience-badge {
    position: absolute;
    bottom: 2rem;
    right: -1rem;
    width: 100px;
    height: 100px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.experience-badge .number {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.8rem;
    text-align: center;
    line-height: 1.2;
}

.about-text h3 {
    margin-bottom: 1.5rem;
}

.about-info {
    margin: 2rem 0;
}

.info-item {
    display: flex;
    margin-bottom: 1rem;
}

.info-title {
    min-width: 120px;
    font-weight: 600;
}

.info-value.available {
    color: var(--success-color);
    position: relative;
    padding-left: 1.5rem;
}

.info-value.available::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: translateY(-50%) scale(1); }
    50% { transform: translateY(-50%) scale(1.1); }
}

/* Services Section */
.services {
    background: var(--light-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-item {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid #e0e0e0;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    font-size: 2rem;
    border-radius: var(--border-radius);
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.service-item:hover .service-icon {
    transform: scale(1.1);
}

.service-item h3 {
    margin-bottom: 1rem;
}

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

.skills-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.skills-text h3 {
    margin-bottom: 1.5rem;
}

.skill-item {
    margin-bottom: 2rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.skill-name {
    font-weight: 600;
}

.skill-percentage {
    color: var(--primary-color);
    font-weight: 600;
}

.skill-bar {
    width: 100%;
    height: 10px;
    background: #e0e0e0;
    border-radius: 5px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 5px;
    width: 0;
    transition: width 1.5s ease;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: linear-gradient(-45deg, rgba(255, 255, 255, 0.2) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.2) 50%, rgba(255, 255, 255, 0.2) 75%, transparent 75%, transparent);
    background-size: 50px 50px;
    animation: move 2s linear infinite;
}

@keyframes move {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

/* ===== CLEANED PORTFOLIO SECTION ===== */
.portfolio {
    background: linear-gradient(135deg, #f8f9ff 0%, #e8ecf7 100%);
    position: relative;
    overflow: hidden;
}

.portfolio::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(77,97,252,0.03)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    pointer-events: none;
}

.portfolio .container {
    position: relative;
    z-index: 1;
}

/* Portfolio Filter */
.portfolio-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(77, 97, 252, 0.1);
    padding: 12px 24px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--dark-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(77, 97, 252, 0.1), transparent);
    transition: left 0.4s ease;
}

.filter-btn:hover::before {
    left: 100%;
}

.filter-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(77, 97, 252, 0.15);
    border-color: rgba(77, 97, 252, 0.3);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(77, 97, 252, 0.4);
    border-color: transparent;
}

.filter-btn.active::before {
    display: none;
}

/* Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2.5rem;
}

/* Portfolio Item - Temizlenmiş ve optimize edilmiş */
.portfolio-item {
    background: rgba(255, 255, 255, 0.98);
    border-radius: 24px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    /* Performance optimizations */
    will-change: auto;
    backface-visibility: hidden;
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(77, 97, 252, 0.03), rgba(105, 121, 248, 0.03));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

/* Hover effects - sadece viewport'ta olan itemler için */
.portfolio-item.in-viewport:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(77, 97, 252, 0.2);
    will-change: transform;
}

.portfolio-item.in-viewport:hover::before {
    opacity: 1;
}

.portfolio-item:not(.in-viewport) {
    will-change: auto;
}

/* Portfolio Image */
.portfolio-img {
    height: 280px;
    overflow: hidden;
    position: relative;
    border-radius: 20px 20px 0 0;
}

.portfolio-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Portfolio Info - Curtain Effect */
.portfolio-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--dark-color);
    z-index: 3;
    max-height: 70px;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-info::after {
    content: '▼';
    position: absolute;
    bottom: 15px;
    right: 20px;
    color: var(--primary-color);
    transition: transform 0.3s ease;
    font-size: 0.9rem;
    font-weight: bold;
}

.portfolio-item.in-viewport:hover .portfolio-info {
    max-height: 220px;
}

.portfolio-item.in-viewport:hover .portfolio-info::after {
    transform: rotate(180deg);
}

.portfolio-info h3 {
    margin-bottom: 0.8rem;
    color: var(--dark-color);
    font-size: 1.4rem;
    font-weight: 700;
    position: relative;
}

.portfolio-info h3::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 2px;
    transition: width 0.3s ease;
}

.portfolio-item.in-viewport:hover .portfolio-info h3::after {
    width: 40px;
}

.portfolio-info p {
    color: var(--secondary-color);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 1.2rem;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.3s ease 0.1s,
                transform 0.3s ease 0.1s;
}

.portfolio-item.in-viewport:hover .portfolio-info p {
    opacity: 1;
    transform: translateY(0);
}

/* Portfolio Link */
.portfolio-link {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary-color);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    opacity: 0;
    transform: translateY(-20px) scale(0.8);
    transition: opacity 0.3s ease 0.15s,
                transform 0.3s ease 0.15s,
                background-color 0.3s ease,
                color 0.3s ease;
    cursor: pointer;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    z-index: 4;
}

.portfolio-item.in-viewport:hover .portfolio-link {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.portfolio-link:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 40px rgba(77, 97, 252, 0.3);
}

/* Portfolio Animation */
.portfolio-item {
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: calc(var(--animation-order) * 0.05s);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Contact Section */
.contact {
    background: var(--white);
}

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

.contact-info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.contact-info-icon {
    min-width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    margin-right: 1rem;
}

.contact-info-text h3 {
    margin-bottom: 0.5rem;
}

/* Form Container */
.contact-form-container {
    background: var(--light-color);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.contact-form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h3 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.form-header p {
    color: var(--secondary-color);
    font-size: 1rem;
}

/* Form Elements */
.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.input-group {
    position: relative;
    margin-bottom: 2rem;
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: 1.2rem 1rem 0.8rem 1rem;
    border: 2px solid #e0e6ed;
    border-radius: 8px;
    outline: none;
    background: var(--white);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    color: var(--dark-color);
}

.input-group textarea {
    min-height: 120px;
    resize: vertical;
    padding-top: 1.5rem;
}

.input-group input:focus,
.input-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(77, 97, 252, 0.1);
    transform: translateY(-2px);
}

.input-group input:valid,
.input-group textarea:valid {
    border-color: var(--success-color);
}

.input-group input.error,
.input-group textarea.error {
    border-color: var(--danger-color);
    animation: shake 0.5s ease;
}

/* Floating Labels */
.input-label {
    position: absolute;
    top: 0;
    left: 1rem;
    background: var(--white);
    padding: 0 0.5rem;
    transform: translateY(1.2rem);
    transition: all 0.3s ease;
    pointer-events: none;
    color: var(--secondary-color);
    font-size: 1rem;
}

.input-group input:focus + .input-label,
.input-group input.has-value + .input-label,
.input-group textarea:focus + .input-label,
.input-group textarea.has-value + .input-label {
    transform: translateY(-0.5rem);
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 500;
}

.label-text {
    display: block;
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin: 2rem 0;
    padding: 1rem;
    background: rgba(77, 97, 252, 0.05);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.checkbox-group input[type="checkbox"] {
    display: none;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    cursor: pointer;
    user-select: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid #ddd;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-top: 2px;
    background: var(--white);
}

.checkbox-custom i {
    font-size: 12px;
    color: var(--white);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.checkbox-group input[type="checkbox"]:checked + .checkbox-label .checkbox-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-group input[type="checkbox"]:checked + .checkbox-label .checkbox-custom i {
    opacity: 1;
}

.checkbox-text {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--dark-color);
}

.privacy-link {
    color: var(--primary-color);
    text-decoration: underline;
    font-weight: 500;
}

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

/* Submit Button */
.btn-submit {
    width: 100%;
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(77, 97, 252, 0.3);
    margin-top: 1rem;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(77, 97, 252, 0.4);
    background: linear-gradient(135deg, var(--primary-light), #5a73ff);
}

.btn-submit:active {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-text {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity 0.3s ease;
}

.btn-icon {
    transition: transform 0.3s ease;
}

.btn-submit:hover .btn-icon {
    transform: translateX(5px);
}

.btn-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-submit.loading .btn-text {
    opacity: 0;
}

.btn-submit.loading .btn-loading {
    opacity: 1;
}

/* Form Messages */
.form-messages {
    margin-top: 1.5rem;
}

.success-message,
.error-message {
    display: none;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    animation: slideInUp 0.5s ease;
}

.success-message {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.error-message {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.success-message.show,
.error-message.show {
    display: flex;
}

/* Field Errors */
.field-error {
    color: var(--danger-color);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: block;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.field-error.show {
    opacity: 1;
    transform: translateY(0);
}

/* ===== FIXED MODAL ANIMATIONS - ESKİ HALİNE GETİRİLDİ ===== */
.modal-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
    /* Eski animasyon sistemi için */
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-container.show {
    opacity: 1;
}

.modal-content {
    background: var(--white);
    width: 100%;
    max-width: 800px;
    border-radius: 12px;
    padding: 2rem;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
    /* Eski modal animasyonu restore edildi */
    transform: scale(0.8) translateY(-50px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Eski açılış animasyonu */
.modal-container.show .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--danger-color);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--danger-color);
    color: var(--white);
    transform: scale(1.1);
}

.modal-image {
    margin: 1rem 0;
}

.modal-image img {
    width: 100%;
    border-radius: 8px;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 2.5rem 0 0.5rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    gap: 2rem;
}

.footer-main {
    display: flex;
    gap: 3rem;
    align-items: flex-start;
    flex: 1;
}

.footer-logo {
    flex-shrink: 0;
}

.footer-logo a {
    display: inline-block;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.footer-logo a:hover {
    transform: scale(1.05);
}

.footer-logo-img {
    height: 60px;
    width: auto;
    margin-bottom: 1rem;
    transition: var(--transition);
    filter: brightness(0) invert(1);
}

.footer-logo-img:hover {
    transform: scale(1.05);
    filter: brightness(0) invert(1) drop-shadow(0 0 10px rgba(77, 97, 252, 0.5));
}

.footer-logo p {
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.7);
    max-width: 250px;
    font-size: 0.95rem;
}

.footer-links-container {
    display: flex;
    gap: 3rem;
}

.footer-links,
.footer-services {
    min-width: 120px;
}

.footer h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
    color: var(--white);
}

.footer h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
}

.footer-links ul li,
.footer-services ul li {
    margin-bottom: 0.4rem;
}

.footer-links ul li a,
.footer-services ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    display: inline-block;
    padding: 0.2rem 0;
    font-size: 0.9rem;
}

.footer-links ul li a:hover,
.footer-services ul li a:hover {
    color: var(--primary-color);
    transform: translateX(3px);
}

.footer-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    flex-shrink: 0;
}

.footer .social-icons {
    display: flex;
    gap: 0.8rem;
    justify-content: center;
}

.footer .social-icons a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.footer .social-icons a:hover {
    transform: translateY(-2px) scale(1.05);
    background: rgba(77, 97, 252, 0.2);
    color: var(--white);
    border-color: rgba(77, 97, 252, 0.4);
    box-shadow: 0 4px 15px rgba(77, 97, 252, 0.2);
}

.cv-download-footer {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white) !important;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    transition: var(--transition);
    font-weight: 500;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(77, 97, 252, 0.3);
    font-size: 0.95rem;
}

.cv-download-footer:hover {
    background: linear-gradient(135deg, var(--primary-light), #5a73ff);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(77, 97, 252, 0.4);
    color: var(--white) !important;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    text-align: center;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

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

.back-to-top:hover {
    background: var(--dark-color);
    transform: translateY(-5px);
}

/* Scroll Animations */
.animate {
    animation: fadeInUp 0.6s ease forwards;
}

/* Custom Scroll Bar */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: #f1f3f6;
    border-radius: 6px;
    box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(77, 97, 252, 0.3);
    border: 2px solid #f1f3f6;
    transition: all 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-light), #5a73ff);
    box-shadow: 0 4px 8px rgba(77, 97, 252, 0.4);
    transform: scale(1.05);
}

::-webkit-scrollbar-thumb:active {
    background: linear-gradient(135deg, #3d4edb, var(--primary-color));
}

::-webkit-scrollbar-corner {
    background: #f1f3f6;
}

/* Firefox scroll bar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) #f1f3f6;
}

/* Animation Keyframes */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 2rem;
    }
}

@media (max-width: 991px) {
    .hero .container,
    .about-content,
    .skills-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    /* İletişim bilgileri düzeltmesi */
    .contact-content {
        text-align: left;
    }
    
    .contact-info-item {
        text-align: left;
    }
    
    .contact-info-text {
        text-align: left;
        flex: 1;
    }
    
    .contact-info-text h3 {
        text-align: left;
        margin-bottom: 0.5rem;
    }
    
    .contact-info-text p {
        text-align: left;
        margin: 0;
    }
    
    .scroll-down {
        display: none;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 2rem;
    }
    
    .footer-main {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }
    
    .footer-links-container {
        gap: 2rem;
    }
    
    .footer h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        padding: 2rem 0;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        z-index: 999;
        gap: 1rem;
    }
    
    .nav-menu.show {
        left: 0;
    }
    
    .nav-menu a {
        padding: 1rem 2rem;
        border-radius: var(--border-radius);
        margin: 0 1rem;
    }
    
    .input-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .services-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .portfolio-item {
        border-radius: 16px;
        margin: 0 0.5rem;
    }
    
    .portfolio-img {
        height: 240px;
        border-radius: 16px 16px 0 0;
    }
    
    .portfolio-info {
        padding: 1.5rem;
        max-height: 60px;
        transition: max-height 0.3s ease;
    }
    
    .portfolio-info h3 {
        font-size: 1.2rem;
    }
    
    .portfolio-link {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        top: 1rem;
        right: 1rem;
    }
    
    .filter-btn {
        padding: 10px 20px;
        font-size: 0.85rem;
        margin: 0.25rem;
        transition: transform 0.2s ease, background-color 0.2s ease;
    }
    
    .filter-btn:hover {
        transform: translateY(-2px);
    }
    
    .contact-form-container {
        padding: 1.5rem;
    }
    
    .checkbox-group {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .checkbox-label {
        gap: 0.5rem;
    }
    
    .form-header h3 {
        font-size: 1.3rem;
    }
    
    .btn-submit {
        font-size: 1rem;
        padding: 0.9rem 1.5rem;
    }
    
    .footer {
        padding: 2rem 0 1rem 0;
    }
    
    .footer-main {
        gap: 1.5rem;
    }
    
    .footer-links-container {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }
    
    .footer-logo-img {
        height: 50px;
    }
    
    .footer .social-icons {
        gap: 0.6rem;
    }
    
    .footer .social-icons a {
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }
    
    .cv-download-footer {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }
    
    .logo-img {
        height: 35px;
    }
    
    .navbar.sticky .logo-img {
        height: 30px;
    }
    
    ::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }
    
    ::-webkit-scrollbar-thumb {
        border: 1px solid #f1f3f6;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .social-icons a {
        width: 40px;
        height: 40px;
    }
    
    .service-item {
        padding: 1.5rem;
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .experience-badge {
        width: 80px;
        height: 80px;
        right: -0.5rem;
    }
    
    .experience-badge .number {
        font-size: 1.5rem;
    }
    
    .experience-badge .text {
        font-size: 0.7rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 0 0.5rem;
    }
    
    .portfolio-item {
        margin: 0;
    }
    
    .portfolio-img {
        height: 200px;
    }
    
    .portfolio-info {
        padding: 1rem;
        max-height: 55px;
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
    
    .portfolio-filter {
        gap: 0.5rem;
        margin-bottom: 2rem;
    }
    
    .contact-form-container {
        padding: 1rem;
    }
    
    .input-group input,
    .input-group textarea {
        padding: 1rem 0.8rem 0.6rem 0.8rem;
    }
    
    .checkbox-text {
        font-size: 0.85rem;
    }
    
    .footer-logo p {
        max-width: 100%;
        text-align: center;
    }
    
    .footer-links-container {
        width: 100%;
    }
    
    .footer-links,
    .footer-services {
        min-width: auto;
        width: 100%;
    }
    
    .contact-info-item {
        align-items: center;
    }
    
    .contact-info-text {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .portfolio-item:hover {
        transform: translateY(-5px);
    }
}

/* Performance optimizations */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print styles */
@media print {
    .navbar,
    .scroll-down,
    .back-to-top,
    .modal-container,
    #particles-js {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    section {
        padding: 2rem 0;
    }
    
    .portfolio-item {
        will-change: auto !important;
        transform: none !important;
    }
}