/* Root Variables - Design System */
:root {
    /* Colors from unified_personal_brand.txt */
    --primary-color: #0A74DA;
    --secondary-color: #2ECC71;
    --accent-gradient: linear-gradient(90deg, #0A74DA, #6A5ACD);
    --bg-light: #F9FAFB;
    --bg-dark: #121212;
    --text-light: #121212;
    --text-dark: #F9FAFB;
    --card-light: #FFFFFF;
    --card-dark: #1E1E1E;
    --shadow-light: rgba(10, 116, 218, 0.1);
    --shadow-dark: rgba(0, 0, 0, 0.3);

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Breakpoints */
    --mobile: 768px;
    --tablet: 1024px;
    --desktop: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Light Theme (Default) */
[data-theme="light"] {
    --bg-primary: var(--bg-light);
    --bg-secondary: var(--card-light);
    --text-primary: var(--text-light);
    --text-secondary: #6B7280;
    --border-color: #E5E7EB;
    --shadow-primary: var(--shadow-light);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: var(--bg-dark);
    --bg-secondary: var(--card-dark);
    --text-primary: var(--text-dark);
    --text-secondary: #9CA3AF;
    --border-color: #374151;
    --shadow-primary: var(--shadow-dark);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Section Styles */
.section {
    padding: var(--spacing-xl) 0;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.section:nth-child(odd) {
    animation-delay: 0.1s;
}

.section:nth-child(even) {
    animation-delay: 0.2s;
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    position: relative;
}


.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
}

#theme-toggle-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px var(--shadow-primary);
    color: var(--text-primary);
    font-size: 1.2rem;
}

#theme-toggle-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Navigation */
.nav-bar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(249, 250, 251, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-normal);
}

[data-theme="dark"] .nav-bar {
    background: rgba(18, 18, 18, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-normal);
}

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

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(10, 116, 218, 0.05) 100%);
    overflow: hidden;
}

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

.hero-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-image {
    position: relative;
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: 0 8px 32px var(--shadow-primary);
    transition: transform var(--transition-normal);
}

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

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

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

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

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    gap: 8px;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(10, 116, 218, 0.3);
}

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

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

.hero-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px var(--shadow-primary);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    display: block;
    width: 40px;
    height: 40px;
    color: var(--primary-color);
    font-size: 1.5rem;
    text-decoration: none;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }

    60% {
        transform: translateY(-5px);
    }
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.skill-category {
    margin-bottom: var(--spacing-md);
}

.skill-category h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

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

/* Journey Section - Step-based Design */
.journey {
    background: var(--bg-secondary);
}

.journey .container {
    overflow: hidden;
    /* ensure no outside artifacts are visible */
}

.journey-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.journey-step {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
    /* prevent step-number or icon shadows from leaking outside */
}

.step-number {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.1;
    position: absolute;
    top: 8px;
    /* keep inside card to avoid artifacts */
    right: 20px;
    z-index: 1;
    line-height: 1;
}

.step-card {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: var(--spacing-lg);
    box-shadow: 0 8px 32px var(--shadow-primary);
    transition: all var(--transition-normal);
    position: relative;
    z-index: 2;
    width: 100%;
    border-top: 4px solid var(--primary-color);
    overflow: hidden;
    /* clip any internal decorative elements */
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-primary);
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin: 0 auto var(--spacing-md);
    box-shadow: 0 8px 25px rgba(10, 116, 218, 0.3);
    position: relative;
    z-index: 3;
    /* ensure icon stays above border/top line */
}

.step-content h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.step-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.step-tag {
    background: rgba(10, 116, 218, 0.1);
    color: var(--primary-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(10, 116, 218, 0.2);
    transition: all var(--transition-fast);
}

.step-tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Projects Section */
.projects-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-normal);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px var(--shadow-primary);
    transition: all var(--transition-normal);
    position: relative;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px var(--shadow-primary);
}

.project-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    position: relative;
    overflow: hidden;
}

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

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

.project-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

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

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: var(--spacing-sm);
}

.tech-tag {
    background: rgba(10, 116, 218, 0.1);
    color: var(--primary-color);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

.project-link {
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.project-link.primary {
    background: var(--accent-gradient);
    color: white;
}

.project-link.secondary {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.project-link:hover {
    transform: translateY(-2px);
}

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

.experience-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.experience-item {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 4px 12px var(--shadow-primary);
    border-left: 4px solid var(--primary-color);
}

.experience-date {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.experience-content h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.experience-content h4 {
    color: var(--secondary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.experience-content ul {
    margin-bottom: var(--spacing-sm);
    padding-left: 20px;
}

.experience-content li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.6;
}

.experience-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.experience-tag {
    background: rgba(46, 204, 113, 0.1);
    color: var(--secondary-color);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* CV Section */
.cv-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.cv-preview {
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px var(--shadow-primary);
}

#cv-iframe {
    width: 100%;
    height: 600px;
    border: none;
}

.cv-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Contact Section */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.contact-item {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px var(--shadow-primary);
}

.contact-item:hover {
    transform: translateY(-3px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.contact-details a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-details a:hover {
    color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--border-color);
}

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

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

/* Responsive Design */

/* Large Mobile / Small Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .hero-title {
        font-size: clamp(2rem, 5vw, 3rem);
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Tablet and Mobile (768px and below) */
@media (max-width: 768px) {
    :root {
        --spacing-xs: 0.4rem;
        --spacing-sm: 0.8rem;
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 2.5rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

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

    /* Navigation */
    .nav-container {
        height: 60px;
        padding: 0 var(--spacing-sm);
        position: relative;
        z-index: 1000;
    }

    .nav-logo {
        font-size: 1.3rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px var(--shadow-primary);
        padding: var(--spacing-md) 0;
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: var(--spacing-xs) 0;
    }

    .nav-link {
        font-size: 1.1rem;
        padding: var(--spacing-xs) 0;
    }

    .hamburger {
        display: flex;
        padding: 8px;
        /* increase touch area */
        margin-right: var(--spacing-sm);
        z-index: 1002;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Theme Toggle */
    .theme-toggle {
        top: 12px;
        right: 64px;
        /* offset left to avoid overlapping hamburger */
    }

    #theme-toggle-btn {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }

    /* Hero Section */
    .hero {
        padding: 80px 0 40px;
        min-height: 90vh;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
    }

    .hero-text {
        text-align: center;
    }

    .hero-image {
        order: -1;
        margin-bottom: var(--spacing-sm);
    }

    .profile-img {
        width: 220px;
        height: 220px;
    }

    .hero-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
        margin-bottom: var(--spacing-xs);
    }

    .hero-subtitle {
        font-size: 1.2rem;
        margin-bottom: var(--spacing-sm);
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
        padding: 0 var(--spacing-sm);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-md);
    }

    .btn {
        padding: 12px 32px;
        width: 200px;
        justify-content: center;
        min-height: 44px;
        /* Touch target size */
    }

    .hero-social {
        justify-content: center;
        margin-top: var(--spacing-sm);
    }

    .social-link {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }

    /* About Section */
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .about-text p {
        font-size: 1rem;
        margin-bottom: var(--spacing-sm);
    }

    .skill-category {
        margin-bottom: var(--spacing-sm);
    }

    .skill-category h3 {
        font-size: 1.1rem;
    }

    .skill-tag {
        padding: 8px 12px;
        font-size: 0.85rem;
        margin: 2px;
        min-height: 32px;
        display: flex;
        align-items: center;
    }

    /* Journey Section */
    .journey-steps {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .step-number {
        font-size: 2.5rem;
        top: 10px;
        right: 15px;
    }

    .step-card {
        padding: var(--spacing-md);
        margin: 0 var(--spacing-xs);
    }

    .step-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: var(--spacing-sm);
    }

    .step-content h3 {
        font-size: 1.2rem;
    }

    .step-content p {
        font-size: 0.95rem;
    }

    .step-tag {
        font-size: 0.8rem;
        padding: 4px 10px;
    }

    /* Projects Section */
    .projects-filter {
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-md);
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.9rem;
        min-height: 40px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .project-card {
        margin: 0 var(--spacing-xs);
    }

    .project-image {
        height: 180px;
        font-size: 2.5rem;
    }

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

    .project-title {
        font-size: 1.2rem;
    }

    .project-description {
        font-size: 0.95rem;
    }

    .tech-tag {
        font-size: 0.75rem;
        padding: 4px 8px;
    }

    .project-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .project-link {
        text-align: center;
        padding: 10px 16px;
        min-height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Experience Section */
    .experience-item {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }

    .experience-content h3 {
        font-size: 1.1rem;
    }

    .experience-content h4 {
        font-size: 1rem;
    }

    .experience-content li {
        font-size: 0.9rem;
        margin-bottom: 6px;
    }

    .experience-tag {
        font-size: 0.75rem;
        padding: 4px 8px;
    }

    /* CV Section */
    .cv-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    #cv-iframe {
        height: 500px;
    }

    .cv-actions {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-sm);
    }

    /* Contact Section */
    .contact-info {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .contact-item {
        padding: var(--spacing-sm);
        flex-direction: row;
        text-align: left;
    }

    .contact-icon {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }

    .contact-details h3 {
        font-size: 1rem;
    }

    .contact-details a {
        font-size: 0.9rem;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .footer-social .social-link {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --spacing-xs: 0.3rem;
        --spacing-sm: 0.6rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

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

    /* Navigation */
    .nav-container {
        height: 55px;
        padding: 0 var(--spacing-sm);
        position: relative;
        z-index: 1000;
    }

    .nav-logo {
        font-size: 1.2rem;
    }

    .nav-menu {
        top: 55px;
        padding: var(--spacing-sm) 0;
    }

    /* Theme Toggle */
    .theme-toggle {
        top: 10px;
        right: 56px;
    }

    #theme-toggle-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    /* Hero Section */
    .hero {
        padding: 70px 0 30px;
        min-height: 85vh;
    }

    .profile-img {
        width: 180px;
        height: 180px;
    }

    .hero-title {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 0.9rem;
        padding: 0;
    }

    .btn {
        padding: 10px 24px;
        font-size: 0.9rem;
        width: 180px;
    }

    .social-link {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    /* Section Titles */
    .section-title {
        font-size: clamp(1.5rem, 6vw, 2.2rem);
    }

    .section-description {
        font-size: 1rem;
        padding: 0 var(--spacing-sm);
    }

    /* About Section */
    .about-text p {
        font-size: 0.9rem;
    }

    .skill-category h3 {
        font-size: 1rem;
    }

    .skill-tag {
        font-size: 0.8rem;
        padding: 6px 10px;
    }

    /* Journey Section */
    .step-number {
        font-size: 2rem;
        top: 5px;
        right: 10px;
    }

    .step-card {
        padding: var(--spacing-sm);
        margin: 0;
    }

    .step-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }

    .step-content h3 {
        font-size: 1.1rem;
    }

    .step-content p {
        font-size: 0.85rem;
    }

    /* Projects Section */
    .filter-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
        margin: 2px;
    }

    .project-card {
        margin: 0;
    }

    .project-image {
        height: 150px;
        font-size: 2rem;
    }

    .project-title {
        font-size: 1.1rem;
    }

    .project-description {
        font-size: 0.85rem;
    }

    .tech-tag {
        font-size: 0.7rem;
        padding: 3px 6px;
    }

    .project-link {
        font-size: 0.85rem;
        padding: 8px 12px;
    }

    /* Experience Section */
    .experience-item {
        padding: var(--spacing-sm);
    }

    .experience-content h3 {
        font-size: 1rem;
    }

    .experience-content h4 {
        font-size: 0.9rem;
    }

    .experience-content li {
        font-size: 0.85rem;
    }

    /* CV Section */
    #cv-iframe {
        height: 400px;
    }

    .cv-actions {
        flex-direction: column;
        align-items: center;
    }

    /* Contact Section */
    .contact-item {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-sm);
    }

    .contact-icon {
        margin-bottom: var(--spacing-xs);
    }

    .contact-details h3 {
        font-size: 0.9rem;
    }

    .contact-details a {
        font-size: 0.85rem;
    }
}

/* Extra Small Mobile (320px and below) */
@media (max-width: 320px) {
    .theme-toggle {
        top: 8px;
        right: 52px;
    }

    .profile-img {
        width: 150px;
        height: 150px;
    }

    .hero-title {
        font-size: clamp(1.3rem, 8vw, 1.8rem);
    }

    .btn {
        width: 160px;
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .step-icon {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }

    .project-image {
        height: 120px;
        font-size: 1.5rem;
    }
}

/* Dark mode initialization */
body {
    transition: all var(--transition-normal);
}

/* Utility Classes */
.hidden {
    display: none;
}

.visible {
    display: block;
}

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

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

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

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {

    .theme-toggle,
    .nav-bar,
    .hero-scroll,
    .footer {
        display: none;
    }
}