/* === VARIABLES === */
:root {
    /* Colors */
    --primary-color: #ff5454;
    --secondary-color: #5454ff;
    --accent-color: #FFD700;
    --background-color: #f2f2f2;
    --text-color: #1a1a1a;
    --card-color: #ffffff;
    
    /* Shadows */
    --shadow-color: rgba(0, 0, 0, 0.8);
    --shadow-offset: 4px;
    
    /* Typography */
    --font-primary: 'Space Grotesk', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Border Radius */
    --border-radius: 0px;
    
    /* Container Width */
    --container-width: 1200px;
}

/* Dark Theme */
.dark-theme {
    --primary-color: #ff5454;
    --secondary-color: #5454ff;
    --accent-color: #FFD700;
    --background-color: #121212;
    --text-color: #f2f2f2;
    --card-color: #1e1e1e;
}

/* === RESET === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* === NOISE EFFECT === */
.noise-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
    opacity: 0.05;
}

.noise {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/png;base64,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');
    background-repeat: repeat;
}

/* === LAYOUT === */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-xxl) 0;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 4rem;
}

h2 {
    font-size: 3rem;
}

h3 {
    font-size: 2rem;
}

p {
    margin-bottom: var(--spacing-md);
}

.section-title {
    position: relative;
    display: inline-block;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    border: 2px solid var(--text-color);
    text-transform: uppercase;
}

.section-intro {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg) auto;
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-color);
    opacity: 0.9;
}

/* === HEADER & NAVIGATION === */
header {
    background-color: var(--card-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--secondary-color);
    color: white;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    border: 2px solid var(--text-color);
    margin-right: var(--spacing-lg);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 500;
    position: relative;
    transition: transform 0.2s ease-in-out;
}

.nav-btn:hover {
    transform: translateY(-2px);
}

.nav-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-btn:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.mobile-menu {
    display: none;
    cursor: pointer;
}

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

/* === HERO SECTION === */
#hero {
    padding: var(--spacing-xxl) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--background-color) 0%, #E8F4FF 100%);
    position: relative;
    overflow: hidden;
}

.dark-theme #hero {
    background: linear-gradient(135deg, var(--background-color) 0%, #1a2f4c 100%);
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, var(--primary-color) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, var(--secondary-color) 0%, transparent 50%);
    opacity: 0.1;
    z-index: 0;
    pointer-events: none;
}

#hero .container {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-title {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
    line-height: 1;
}

.title-card {
    display: inline-block;
    background-color: var(--secondary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
}

.title-card h2 {
    font-size: 1.2rem;
    margin: 0;
    font-weight: 500;
}

.hero-text {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
}

.hero-btns {
    display: flex;
    gap: var(--spacing-md);
}

.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}

.btn:hover {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--shadow-color);
}

.btn:active {
    transform: translate(4px, 4px);
    box-shadow: 0px 0px 0 var(--shadow-color);
}

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

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

/* === ABOUT SECTION === */
#about {
    background-color: var(--card-color);
    border-top: 2px solid var(--text-color);
    border-bottom: 2px solid var(--text-color);
}

.about-content {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-text {
    flex: 2;
    font-size: 1.1rem;
}

.about-stats {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.stat-card {
    background-color: var(--background-color);
    padding: var(--spacing-lg);
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    text-align: center;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card h3 {
    font-size: 3rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

/* === PROJECTS SECTION === */
.project-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    justify-content: center;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--card-color);
    border: 2px solid var(--text-color);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-color);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background-color: var(--card-color);
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-img {
    height: 200px;
    overflow: hidden;
    border-bottom: 2px solid var(--text-color);
}

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

.project-content {
    padding: var(--spacing-lg);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
}

.project-tags span {
    background-color: var(--background-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
    border: 1px solid var(--text-color);
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.project-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--secondary-color);
    color: white;
    font-weight: 500;
    border: 1px solid var(--text-color);
    transition: all 0.2s ease;
}

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

/* === SKILLS SECTION === */
#skills {
    background-color: var(--card-color);
    border-top: 2px solid var(--text-color);
    border-bottom: 2px solid var(--text-color);
}

.skills-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.skill-category h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--text-color);
    text-align: center;
}

.skill-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.skill-card {
    background-color: var(--background-color);
    padding: var(--spacing-lg) var(--spacing-md);
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    text-align: center;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.skill-card:hover {
    transform: translateY(-10px);
    background-color: var(--primary-color);
    color: white;
}

.skill-card i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
}

.skill-card:hover i {
    transform: scale(1.2);
}

.skill-name {
    font-weight: 500;
    font-size: 1.1rem;
}

/* === SKILLS SECTION LOGOS === */
.logo-container {
    height: 60px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.skill-logo {
    max-height: 60px;
    max-width: 100%;
    object-fit: contain;
    transition: all 0.3s ease;
}

.skill-card:hover .skill-logo {
    transform: scale(1.2);
}

.dark-theme .skill-logo {
    filter: brightness(0) invert(1);
}

/* === SECTION DIVIDER === */
.section-divider {
    height: 8px;
    background-color: var(--text-color);
    border-top: 2px solid var(--text-color);
    border-bottom: 2px solid var(--text-color);
    margin: 0;
    position: relative;
    overflow: hidden;
}

.section-divider::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        -45deg,
        var(--primary-color),
        var(--primary-color) 10px,
        var(--secondary-color) 10px,
        var(--secondary-color) 20px
    );
    opacity: 0.8;
}

/* === EDUCATION & CERTIFICATIONS SECTIONS === */
#education, #certifications {
    padding: var(--spacing-xxl) 0;
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: var(--text-color);
    top: 0;
    bottom: 0;
    left: 20px;
}

.timeline-item {
    display: flex;
    position: relative;
    background-color: var(--card-color);
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    margin-left: var(--spacing-xxl);
    transition: transform 0.3s ease;
}

.timeline-item:hover {
    transform: translateX(10px);
}

.timeline-item::before {
    content: '';
    position: absolute;
    width: var(--spacing-xl);
    height: 2px;
    background-color: var(--text-color);
    top: 50%;
    left: calc(-1 * var(--spacing-xl));
    z-index: 1;
}

.timeline-date {
    min-width: 110px;
    text-align: center;
    padding: var(--spacing-sm);
    background-color: var(--primary-color);
    color: white;
    font-weight: 700;
    border: 2px solid var(--text-color);
    align-self: flex-start;
    margin-right: var(--spacing-lg);
    position: relative;
}

.timeline-place {
    font-style: italic;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

/* === CONTACT SECTION === */
.contact-container {
    display: flex;
    gap: var(--spacing-xl);
}

.contact-info, .contact-form {
    flex: 1;
}

.contact-card {
    background-color: var(--card-color);
    padding: var(--spacing-xl);
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
}

.contact-card h3 {
    margin-bottom: var(--spacing-lg);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.social-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--secondary-color);
    color: white;
    font-weight: 500;
    border: 1px solid var(--text-color);
    transition: all 0.2s ease;
}

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

form {
    background-color: var(--card-color);
    padding: var(--spacing-xl);
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

input, textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--text-color);
    background-color: var(--background-color);
    font-family: var(--font-primary);
    font-size: 1rem;
}

input:focus, textarea:focus {
    outline: none;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
}

/* === FOOTER === */
footer {
    background-color: var(--text-color);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 2px solid var(--text-color);
}

.dark-theme footer {
    background-color: #000;
    color: var(--text-color);
    border-top: 2px solid #333;
}

.footer-links {
    margin: var(--spacing-md) 0;
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.footer-links a {
    color: white;
    text-decoration: underline;
    transition: color 0.3s ease;
}

.dark-theme .footer-links a {
    color: var(--text-color);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-tagline {
    font-size: 0.9rem;
    margin-top: var(--spacing-md);
    opacity: 0.8;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 992px) {
    h1 {
        font-size: 3.5rem;
    }
    
    h2 {
        font-size: 2.5rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skill-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .contact-container {
        flex-direction: column;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .about-stats {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    :root {
        --spacing-xxl: 3rem;
    }
    
    .hero-btns {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .hero-btns .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .skill-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-item {
        flex-direction: column;
    }
    
    .timeline-date {
        margin-bottom: var(--spacing-md);
        margin-right: 0;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
}

/* === THEME SWITCHER === */
.theme-switcher {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 100;
    width: 50px;
    height: 50px;
    background-color: var(--card-color);
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.theme-switcher:hover {
    transform: translateY(-5px);
}

.theme-switcher i {
    font-size: 1.5rem;
    color: var(--text-color);
}

/* === BACK TO TOP BUTTON === */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 80px;
    z-index: 100;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: 2px solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

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

.back-to-top i {
    font-size: 1.5rem;
}

/* === CREDENTIAL BUTTON === */
.credential-btn {
    margin-top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.9rem;
    display: inline-block;
}

.credential-btn:hover {
    transform: translateY(-3px);
}

.timeline-content {
    position: relative;
    z-index: 2;
}