/* ===== VARIABLES ===== */
:root {
    /* Colors */
    --primary-color: #2a9d8f;
    --secondary-color: #e76f51;
    --text-color: #333333;
    --bg-color: #ffffff;
    --light-bg-color: #f8f9fa;
    --dark-bg-color: #343a40;
    --border-color: #dee2e6;
    
    /* Font Sizes */
    --h1-size: 3.5rem;
    --h2-size: 2.5rem;
    --h3-size: 1.75rem;
    --normal-size: 1rem;
    --small-size: 0.875rem;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 15px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --primary-color: #4ecdc4;
    --secondary-color: #ff8367;
    --text-color: #f8f9fa;
    --bg-color: #121212;
    --light-bg-color: #1f1f1f;
    --dark-bg-color: #0d0d0d;
    --border-color: #444444;
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    font-size: var(--normal-size);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: var(--h2-size);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.underline {
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

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

.primary-btn:hover {
    background-color: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

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

.highlight {
    color: var(--primary-color);
}

/* ===== HEADER STYLES ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

[data-theme="dark"] header {
    background-color: rgba(18, 18, 18, 0.95);
}

header.scrolled {
    padding: 15px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo h2 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
}

.nav-links li {
    margin: 0 15px;
}

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

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

.nav-links a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

.theme-toggle {
    display: flex;
    align-items: center;
    margin-left: 20px;
    cursor: pointer;
}

.theme-toggle i {
    font-size: 1.2rem;
    color: var(--text-color);
    margin: 0 5px;
    transition: color 0.3s ease;
}

.theme-toggle i:hover {
    color: var(--primary-color);
}

[data-theme="dark"] .fa-moon {
    color: var(--primary-color);
}

[data-theme="light"] .fa-sun {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger .line {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* ===== HERO SECTION ===== */
.hero {
    padding-top: 150px;
    height: 100vh;
    display: flex;
    align-items: center;
}

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

.hero-content {
    flex: 1;
    margin-right: 50px;
}

.hero-content h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: var(--h1-size);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h2 {
    font-size: var(--h3-size);
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.hero-content p {
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-container {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    overflow: hidden;
    border: 5px solid var(--primary-color);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* ===== ABOUT SECTION ===== */
.about {
    background-color: var(--light-bg-color);
}

.about-content {
    display: flex;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: var(--h3-size);
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 20px;
}

.about-text .btn {
    margin-top: 20px;
}

.skills {
    flex: 1;
}

.skills h3 {
    font-size: var(--h3-size);
    margin-bottom: 20px;
    color: var(--primary-color);
}

.skill {
    margin-bottom: 20px;
}

.skill span {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.skill-bar {
    width: 100%;
    height: 10px;
    background-color: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}

.skill-level {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: width 1s ease;
}

/* ===== PORTFOLIO SECTION ===== */
.portfolio {
    background-color: var(--bg-color);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 30px;
    background-color: var(--light-bg-color);
    color: var(--text-color);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn.active,
.filter-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.portfolio-item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.portfolio-item:hover {
    transform: translateY(-10px);
}

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

.portfolio-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.portfolio-item:hover .overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    padding: 20px;
    color: white;
}

.overlay-content h3 {
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.overlay-content p {
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.project-description {
    color: #e0e0e0;
    font-size: 0.9rem;
    margin-bottom: 15px;
    line-height: 1.4;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
}

.view-project {
    padding: 8px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 30px;
    display: inline-block;
    transition: all 0.3s ease;
}

.view-project:hover {
    background-color: white;
    color: var(--primary-color);
}

/* ===== CONTACT SECTION ===== */
.contact {
    background-color: var(--light-bg-color);
}

.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 15px;
    width: 30px;
}

.contact-item h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.social-links a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px);
}

.contact-form {
    flex: 1;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    height: 150px;
    resize: none;
}

/* ===== FOOTER ===== */
footer {
    background-color: var(--dark-bg-color);
    color: white;
    text-align: center;
    padding: 20px 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media screen and (max-width: 992px) {
    :root {
        --h1-size: 3rem;
        --h2-size: 2.2rem;
        --h3-size: 1.5rem;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        margin-right: 0;
        margin-bottom: 50px;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .contact-content {
        flex-direction: column;
    }
}

@media screen and (max-width: 768px) {
    :root {
        --h1-size: 2.5rem;
        --h2-size: 2rem;
        --section-padding: 60px 0;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-color);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 50px;
        transition: left 0.3s ease;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: 15px 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active .line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active .line:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .line:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero {
        height: auto;
        padding-top: 120px;
        padding-bottom: 50px;
    }
    
    .image-container {
        width: 250px;
        height: 250px;
    }
}

@media screen and (max-width: 576px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 80%;
        margin-bottom: 10px;
    }
}