/* --- === Joseph Catalano Portfolio - Enhanced Styles === --- */

/* --- === 1. Global Settings & Variables === --- */
:root {
    /* Color Palette (Dark Theme) */
    --bg-dark-primary: #121212; /* Very dark grey, near black */
    --bg-dark-secondary: #1a1a1a; /* Slightly lighter dark grey */
    --bg-dark-tertiary: #2a2a2a; /* Card background */
    --text-light-primary: #e0e0e0; /* Light grey text */
    --text-light-secondary: #a0a0a0; /* Medium grey text */
    --accent-color: #00aaff; /* Vibrant blue accent */
    --accent-color-darker: #0088cc;
    --accent-gradient: linear-gradient(135deg, #00aaff, #0077cc);
    --white: #ffffff;
    --red-error: #ff4d4d;

    /* Typography */
    --font-primary: 'Poppins', sans-serif; /* Modern sans-serif */
    --font-secondary: 'Roboto Mono', monospace; /* For code/tech elements */
    --text-base-size: 16px; /* Base font size for rem calculations */

    /* Spacing & Layout */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --container-width: 1200px;
    --navbar-height: 70px;
    --border-radius: 8px;

    /* Effects */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
    --box-shadow-soft: 0 4px 15px rgba(0, 170, 255, 0.1);
    --box-shadow-hover: 0 8px 25px rgba(0, 170, 255, 0.2);
}

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

html {
    font-size: var(--text-base-size);
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
    /* Custom scrollbar (optional) */
    scrollbar-width: thin;
    scrollbar-color: var(--accent-color) var(--bg-dark-secondary);
}
/* Custom scrollbar for Webkit */
html::-webkit-scrollbar { width: 8px; }
html::-webkit-scrollbar-track { background: var(--bg-dark-secondary); }
html::-webkit-scrollbar-thumb { background-color: var(--accent-color); border-radius: 10px; }

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--text-light-primary);
    background-color: var(--bg-dark-primary);
    overflow-x: hidden; /* Prevent horizontal scrollbars */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* REMOVED custom cursor class requirement */
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 90%;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    color: var(--white);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}
h1 { font-size: 2.8rem; } /* Logo size specifically */
h2 { font-size: 2.5rem; margin-bottom: var(--spacing-lg); } /* Section Titles */
h3 { font-size: 1.6rem; color: var(--text-light-primary); } /* Card Titles */

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-light-secondary);
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover, a:focus {
    color: var(--white);
    outline: 2px solid var(--accent-color); /* Focus indicator */
    outline-offset: 3px;
}
a:focus:not(:focus-visible) {
    outline: none;
}


ul { list-style: none; }
li { margin-bottom: var(--spacing-xs); }

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius);
}

.section {
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
}
.section-title i {
    margin-right: var(--spacing-sm);
    color: var(--accent-color);
}

.bg-darker { background-color: var(--bg-dark-secondary); }
.full-screen { min-height: 100vh; display: flex; align-items: center; }

/* --- === 2. Helper Classes === --- */
.content-box {
    background-color: var(--bg-dark-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-soft);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.card-hover {
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    will-change: transform, box-shadow;
}
.card-hover:hover, .card-hover:focus-within {
    transform: translateY(-8px);
    box-shadow: var(--box-shadow-hover);
    z-index: 10;
    position: relative;
}


/* --- === 3. Particle Background === --- */
#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    background-color: var(--bg-dark-primary);
    background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.05) 1px, transparent 0);
    background-size: 20px 20px;
}


/* --- === 4. Custom Cursor (Optional) === --- */
/* ENTIRE SECTION REMOVED */


/* --- === 5. Header & Navigation === --- */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--navbar-height);
    background-color: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(10px);
    transition: background-color var(--transition-medium), box-shadow var(--transition-medium);
    box-shadow: none;
}
#header.scrolled {
    background-color: rgba(26, 26, 26, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

#navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo-link { outline: none; }
.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    padding: var(--spacing-xs);
}

#navbar ul {
    display: flex;
    align-items: center;
}

.nav-link {
    color: var(--text-light-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    margin: 0 var(--spacing-xs);
    position: relative;
    font-weight: 500;
    transition: color var(--transition-fast);
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background-color: var(--accent-color);
    transition: transform var(--transition-medium);
    transform-origin: center;
}
.nav-link:hover, .nav-link:focus, .nav-link.active {
    color: var(--accent-color);
    outline: none;
}
.nav-link:hover::after, .nav-link:focus::after, .nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

#menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-light-primary);
    font-size: 1.8rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1100;
    line-height: 1;
}


/* --- === 6. Hero Section === --- */
#hero {
    padding-top: var(--navbar-height);
    text-align: center;
    position: relative;
    background-color: var(--bg-dark-primary);
}
.hero-content { z-index: 1; position: relative; }

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
    letter-spacing: -1px;
}

.subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--text-light-secondary);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
    min-height: 1.5em;
}
.subtitle #typing-effect::after {
    content: '|';
    opacity: 1;
    margin-left: 2px;
    font-weight: 300;
    color: var(--accent-color);
    animation: blink 0.7s infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.1rem;
    max-width: 650px;
    margin: 0 auto var(--spacing-lg);
    color: var(--text-light-secondary);
}

.hero-links .btn { margin: var(--spacing-xs) var(--spacing-sm); }

.scroll-down-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-light-secondary);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
    z-index: 5;
}
.scroll-down-indicator:hover { color: var(--accent-color); }
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* --- === 7. Buttons === --- */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-align: center;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    z-index: 1;
    vertical-align: middle;
}
.btn i { margin-right: var(--spacing-xs); }
.btn span { position: relative; z-index: 2; transition: transform var(--transition-fast), opacity var(--transition-fast); display: inline-block; }

/* Primary Button */
.btn-primary {
    background: var(--accent-gradient);
    color: var(--white);
    border-color: transparent;
}
.btn-primary:hover, .btn-primary:focus {
    background: var(--accent-color-darker);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 170, 255, 0.3);
}

/* Secondary Button */
.btn-secondary {
    background-color: var(--bg-dark-tertiary);
    color: var(--text-light-primary);
    border-color: var(--bg-dark-tertiary);
}
.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--white);
    transform: translateY(-2px);
}

/* Outline Button */
.btn-outline {
    background-color: transparent;
    color: var(--accent-color);
    border-color: var(--accent-color);
}
.btn-outline:hover, .btn-outline:focus {
    background-color: rgba(0, 170, 255, 0.1);
    color: var(--white);
    transform: translateY(-2px);
}

/* Button Hover Text Effect */
.btn[data-hover-text]::before {
    content: attr(data-hover-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: inherit;
    color: inherit;
    transform: translateY(100%);
    transition: transform var(--transition-fast);
    z-index: 1;
    font-weight: 600;
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    box-sizing: border-box;
}
.btn-primary[data-hover-text]::before { background: var(--accent-color-darker); }
.btn-secondary[data-hover-text]::before { background: var(--accent-color); }
.btn-outline[data-hover-text]::before { background-color: rgba(0, 170, 255, 0.1); }

.btn[data-hover-text]:hover::before, .btn[data-hover-text]:focus::before {
    transform: translateY(0);
}
.btn[data-hover-text]:hover span, .btn[data-hover-text]:focus span {
    transform: translateY(-100%);
    opacity: 0;
}

/* --- === 8. About Section === --- */
.grid-about {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}
.about-text h2 { text-align: left; }
.about-text h2::after { left: 0; transform: translateX(0); }

.interests-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-left: 0;
}
.interests-list li {
    background-color: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 5px;
    font-size: 0.9rem;
    color: var(--text-light-secondary);
    display: inline-flex;
    align-items: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}
.interests-list li:hover {
    background-color: var(--accent-color);
    color: var(--white);
}
.interests-list li i {
    color: var(--accent-color);
    margin-right: var(--spacing-xs);
    transition: color var(--transition-fast);
}
.interests-list li:hover i {
    color: var(--white);
}


.about-image img {
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 3px solid var(--accent-color);
}


/* --- === 9. Timeline (Experience) === --- */
.timeline {
    position: relative;
    max-width: 900px;
    margin: var(--spacing-lg) auto 0 auto;
}
.timeline::before {
    content: '';
    position: absolute;
    width: 3px;
    background-color: rgba(0, 170, 255, 0.2);
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    padding: var(--spacing-sm) var(--spacing-lg);
    position: relative;
    width: 50%;
}
.timeline-item:nth-child(odd) { left: 0; padding-right: calc(var(--spacing-lg) + 30px); text-align: right; }
.timeline-item:nth-child(even) { left: 50%; padding-left: calc(var(--spacing-lg) + 30px); text-align: left; }

.timeline-item::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background-color: var(--bg-dark-primary);
    border: 4px solid var(--accent-color);
    top: calc(var(--spacing-md) + 10px);
    border-radius: 50%;
    z-index: 1;
    transition: transform var(--transition-fast);
}
.timeline-item:nth-child(odd)::after { right: -8px; transform: translateX(50%); }
.timeline-item:nth-child(even)::after { left: -8px; transform: translateX(-50%); }
.timeline-item:hover::after { transform: scale(1.3) translateX(var(--dot-translate-x, -50%)); }
.timeline-item:nth-child(odd):hover::after { --dot-translate-x: 50%; }

.timeline-content {
    position: relative;
}
.timeline-date {
    display: block;
    font-size: 0.85rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-secondary);
}
.timeline-content h3 { margin-bottom: var(--spacing-xs); }
.company {
    font-style: italic;
    color: var(--text-light-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}
.location { margin-left: auto; font-style: normal; white-space: nowrap; }
.timeline-content ul { margin-top: var(--spacing-sm); padding-left: 0; }
.timeline-content ul li {
    position: relative;
    padding-left: var(--spacing-md);
    color: var(--text-light-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.7rem;
}
.timeline-content ul li::before {
    content: "\f101";
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--accent-color);
    position: absolute;
    left: 0;
    top: 1px;
}
.timeline-item:nth-child(odd) .timeline-content ul { text-align: left; }
.timeline-item:nth-child(odd) .company { flex-direction: row-reverse; }
.timeline-item:nth-child(odd) .company .location { margin-left: 0; margin-right: auto; }


/* --- === 10. Projects Section === --- */
.filter-buttons {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}
.btn-filter {
    background-color: var(--bg-dark-tertiary);
    color: var(--text-light-secondary);
    border: 1px solid var(--bg-dark-tertiary);
    margin: 0 var(--spacing-xs) var(--spacing-xs) 0;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.9rem;
    border-radius: 20px;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.btn-filter.active, .btn-filter:hover, .btn-filter:focus {
    background-color: var(--accent-color);
    color: var(--white);
    border-color: var(--accent-color);
    transform: none;
    box-shadow: none;
}

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

.project-item {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    overflow: hidden;
}

.project-image {
    position: relative;
    overflow: hidden;
    margin: -var(--spacing-md) -var(--spacing-md) var(--spacing-md) -var(--spacing-md);
}
.project-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-medium);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}
.project-item:hover .project-image img, .project-item:focus-within .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 170, 255, 0.7);
    color: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity var(--transition-medium);
    font-size: 1.1rem;
    pointer-events: none;
}
.project-overlay i { font-size: 1.5rem; margin-top: var(--spacing-xs); }
.project-item:hover .project-overlay, .project-item:focus-within .project-overlay {
    opacity: 1;
}

.project-info { padding-top: 0; flex-grow: 1; display: flex; flex-direction: column; }
.project-info h3 { margin-bottom: var(--spacing-xs); }
.project-info p { font-size: 0.95rem; color: var(--text-light-secondary); margin-bottom: auto; flex-grow: 1; }
.project-tags { margin-top: var(--spacing-md); }
.tag {
    display: inline-block;
    background-color: rgba(0, 170, 255, 0.1);
    color: var(--accent-color);
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.75rem;
    margin-right: 5px;
    margin-bottom: 5px;
    font-family: var(--font-secondary);
    text-transform: uppercase;
    font-weight: 600;
}

/* --- === 11. Project Modals === --- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-medium), visibility var(--transition-medium);
    padding: var(--spacing-md);
}
.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    position: relative;
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--spacing-lg);
    transform: scale(0.9);
    transition: transform var(--transition-medium);
    /* Inherits .content-box styles */
}
.modal.active .modal-content {
    transform: scale(1);
}
.modal-content h2 { margin-bottom: var(--spacing-md); }
.modal-image { margin-bottom: var(--spacing-md); }
.modal-content ul { padding-left: var(--spacing-md); margin-bottom: var(--spacing-md); }
.modal-content ul li { list-style-type: disc; color: var(--text-light-secondary); margin-bottom: var(--spacing-xs); }
.modal-links { margin-top: var(--spacing-lg); border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: var(--spacing-md); }
.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-light-secondary);
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    transition: color var(--transition-fast), transform var(--transition-fast);
    padding: 5px;
}
.modal-close:hover, .modal-close:focus {
    color: var(--red-error);
    transform: rotate(90deg);
    outline: none;
}

/* --- === 12. Education Section === --- */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}
.education-item { /* Opacity/transform from GSAP */ }
.edu-header { display: flex; align-items: center; margin-bottom: var(--spacing-sm); }
.edu-header i { font-size: 2rem; color: var(--accent-color); margin-right: var(--spacing-md); width: 30px; text-align: center; }
.education-item h3 { margin-bottom: 0; }
.education-item p { margin-bottom: var(--spacing-xs); color: var(--text-light-secondary); }
.education-item strong { color: var(--text-light-primary); }
.edu-date, .location { font-size: 0.9rem; color: var(--text-light-secondary); }
.edu-date i, .location i { margin-right: var(--spacing-xs); color: var(--accent-color); }
.edu-details { font-size: 0.9rem; font-style: italic; margin-top: var(--spacing-sm); }

/* --- === 13. Skills Section === --- */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}
.skill-category { /* Opacity/transform from GSAP */ }
.skill-category h3 { font-size: 1.3rem; margin-bottom: var(--spacing-md); border-bottom: 2px solid var(--accent-color); padding-bottom: var(--spacing-xs); }
.skill-category h3 i { margin-right: var(--spacing-xs); }
.skills-list { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); }
.skills-list span {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-light-secondary);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.9rem;
    font-family: var(--font-secondary);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    cursor: default;
}
.skills-list span:hover {
    background-color: var(--accent-color);
    color: var(--white);
}

/* --- === 14. Contact Section === --- */
.contact-container { text-align: center; }
.contact-subtitle {
    font-size: 1.1rem;
    color: var(--text-light-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}
.contact-card { text-align: center; }
.contact-card a { display: block; color: inherit; text-decoration: none; padding: var(--spacing-md); margin: -var(--spacing-md); }
.contact-card a:hover, .contact-card a:focus { color: inherit; outline: none; }
.contact-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
    transition: transform var(--transition-fast);
}
.contact-card:hover i, .contact-card:focus-within i { transform: scale(1.1); }
.contact-card h3 { font-size: 1.2rem; color: var(--white); margin-bottom: var(--spacing-xs); }
.contact-card span { font-size: 0.95rem; color: var(--text-light-secondary); word-break: break-word; }
.contact-location { margin-top: var(--spacing-md); color: var(--text-light-secondary); }
.contact-location i { margin-right: var(--spacing-xs); color: var(--accent-color); }

/* --- === 15. Footer === --- */
#footer {
    background-color: var(--bg-dark-secondary);
    color: var(--text-light-secondary);
    text-align: center;
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-xl);
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}


/* --- === 16. GSAP Animation Helpers === --- */
/* Base states for elements animated by GSAP are set via JS 'from' vars */


/* --- === 17. Responsive Design === --- */
@media (max-width: 992px) {
    :root { --navbar-height: 65px; }
    h2 { font-size: 2.2rem; }
    h3 { font-size: 1.4rem; }
    .section { padding: var(--spacing-lg) 0; }

    .grid-about { grid-template-columns: 1fr; gap: var(--spacing-md); }
    .about-image { order: -1; max-width: 350px; margin: 0 auto var(--spacing-md) auto; }
    .about-text h2 { text-align: center; }
    .about-text h2::after { left: 50%; transform: translateX(-50%); }

    .timeline::before { left: 30px; }
    .timeline-item { width: 100%; padding-left: 60px; padding-right: var(--spacing-sm); left: 0 !important; text-align: left !important; }
    .timeline-item:nth-child(odd) { padding-right: var(--spacing-sm); text-align: left !important; }
    .timeline-item:nth-child(even) { padding-left: 60px; text-align: left !important; }
    .timeline-item::after { left: 22px; transform: translateX(-50%); }
    .timeline-item:nth-child(odd)::after { right: auto; }
    .timeline-item:nth-child(odd) .company { flex-direction: row; }
    .timeline-item:nth-child(odd) .company .location { margin-left: auto; margin-right: 0; }
    .timeline-item:hover::after { transform: scale(1.3) translateX(-50%); }
}

@media (max-width: 768px) {
    html { scroll-padding-top: 60px; }
    :root { --navbar-height: 60px; }

    #navbar ul {
        display: none;
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--bg-dark-secondary);
        flex-direction: column;
        align-items: stretch;
        justify-content: center;
        padding: var(--navbar-height) 0 0 0;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
        transition: right 0.4s ease-in-out;
        z-index: 1050;
    }
    #navbar ul.active {
        display: flex;
        right: 0;
    }
    #navbar ul li { width: 100%; text-align: center; }
    .nav-link {
        padding: var(--spacing-md) var(--spacing-sm);
        margin: 0;
        width: 100%;
        font-size: 1.1rem;
        display: block;
        border-bottom: 1px solid rgba(255,255,255,0.05);
    }
     #navbar ul li:last-child .nav-link { border-bottom: none; }

    .nav-link::after { display: none; }
    .nav-link:hover, .nav-link:focus, .nav-link.active {
        background-color: rgba(0, 170, 255, 0.1);
        color: var(--accent-color);
    }

    #menu-toggle { display: block; }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .hero-title { font-size: clamp(2rem, 10vw, 4rem); }
    .subtitle { font-size: clamp(1rem, 4vw, 1.5rem); }

    .projects-grid { grid-template-columns: 1fr; }
    .education-grid { grid-template-columns: 1fr; }
    .skills-container { grid-template-columns: 1fr; }
    .contact-methods { grid-template-columns: 1fr; }

    .modal-content { width: 95%; padding: var(--spacing-md); }
    .modal-close { top: var(--spacing-sm); right: var(--spacing-sm); font-size: 1.8rem; }

    .card-hover:hover, .card-hover:focus-within {
        transform: translateY(-4px);
        box-shadow: var(--box-shadow-soft);
    }
}