/* styles/style.css */

* {
    margin: 0;
    padding: 0;
    user-select: none;
    box-sizing: border-box;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-bg: #1d1e22;
    --secondary-bg: #1a1a1a;
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    --accent-red: #ff3b30;
    --accent-dark-red: #d70015;
    --accent-light-red: #ff6257;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #888888;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --base-font-size: 1rem;
}

body {
    background: var(--primary-bg);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    scroll-behavior: smooth;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    font-size: var(--base-font-size);
}

/* === Parallax Background === */
#parallax {
    position: fixed;
    width: 100%;
    height: 100vh;
    background-image:
        url("../images/depth-3.png"),
        url("../images/depth-2.png"),
        url("../images/depth-1.png");
    background-repeat: no-repeat;
    background-position: center;
    background-position: 50% 50%;
    z-index: -2;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s linear;
}

#parallax.loaded {
    opacity: 1;
}

h1 {
    white-space: nowrap;
}

/* === Custom cursor styles === */
.cursor {
    position: fixed;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-red);
    mix-blend-mode: difference;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.2s ease;
}

.cursor-follower {
    position: fixed;
    width: 40px;
    height: 40px;
    border: 1px solid var(--accent-red);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    transition: transform 0.6s ease, opacity 0.3s ease;
    opacity: 0.5;
}

.cursor.hidden,
.cursor-follower.hidden {
    opacity: 0;
}

.cursor.click {
    transform: scale(0.8);
    background: var(--accent-dark-red);
}

.cursor-follower.click {
    transform: scale(1.5);
    border-color: var(--accent-dark-red);
    opacity: 0.3;
}

.cursor.hover {
    transform: scale(1.5);
    background: var(--accent-light-red);
}

.cursor-follower.hover {
    transform: scale(1.8);
    border-color: var(--accent-light-red);
    opacity: 0.7;
}

/* === Particle effect === */
.particle {
    position: fixed;
    pointer-events: none;
    opacity: 0;
    z-index: 9997;
}

/* === Scroll progress indicator === */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg,
            var(--accent-red),
            var(--accent-dark-red));
    z-index: 1000;
    transition: width 0.2s ease;
}

/* === Back to top button === */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 99;
    box-shadow: var(--glass-shadow);
}

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

.back-to-top:hover {
    background: linear-gradient(90deg,
            var(--accent-red),
            var(--accent-dark-red));
    transform: translateY(-5px);
}

/* === Fix for mobile hover state === */
@media (hover: none) {
    .back-to-top:hover {
        background: rgba(255, 255, 255, 0.1);
        transform: none;
    }
}

/* === Navigation Container === */
.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    z-index: 100;
    transition: var(--transition-smooth);
}

/* === Section Selector Navigation === */
.section-selector {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 1rem 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    transition: var(--transition-smooth);
    width: 100%;
    transform-origin: center top;
}

.nav-container.scrolled .section-selector {
    width: auto;
    min-width: 500px;
    border-radius: 50px;
    border: 1px solid var(--glass-border);
    padding: 0.75rem 1.5rem;
    gap: 0.75rem;
    margin-top: 20px;
    transform: scale(0.95);
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            var(--accent-red),
            var(--accent-dark-red));
    opacity: 0;
    z-index: -1;
    transition: opacity 0.3s ease;
    border-radius: 50%;
}

.nav-btn:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.nav-btn:hover::before {
    opacity: 0.15;
}

.nav-btn.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 15px rgba(255, 59, 48, 0.3);
}

.nav-btn.active::before {
    opacity: 0.2;
}

/* === Tooltip styling === */
.nav-btn::after {
    content: attr(aria-label);
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 1000;
}

.nav-btn:hover::after {
    opacity: 1;
    visibility: visible;
}

/* === Mobile menu === */
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin-left: auto;
    z-index: 101;
    position: fixed;
    top: 15px;
    right: 15px;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 0;
    height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(15px);
    z-index: 99;
    overflow-x: hidden;
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    padding-top: 70px;
}

.mobile-menu.open {
    width: 250px;
}

.mobile-nav-btn {
    display: flex;
    align-items: center;
    width: 100%;
    background: transparent;
    border: none;
    color: transparent;
    padding: 1.1rem 2rem;
    text-align: left;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    gap: 0.75rem;
    opacity: 0;
    transform: translateX(20px);
}

.mobile-menu.open .mobile-nav-btn {
    opacity: 1;
    color: var(--text-secondary);
    transform: translateX(0);
}

.mobile-nav-btn i {
    width: 20px;
    text-align: center;
}

.mobile-nav-btn:hover,
.mobile-nav-btn:focus {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-red);
}

.mobile-nav-btn.active {
    color: var(--accent-light-red);
    background: rgba(255, 59, 48, 0.1);
}

/* === Glassmorphism components === */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: 2rem;
    transition: var(--transition-smooth);
}

.glass-panel:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 36px 0 rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
    background: var(--glass-bg);
}

/* === Layout === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 1rem;
}

/* === Hero Section === */
.hero-section {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
    padding: 25vh 1rem 0 1rem;
}

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

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 3.5rem);
    margin-bottom: .5rem;
    background: linear-gradient(90deg,
            var(--accent-red),
            var(--accent-light-red),
            var(--accent-dark-red));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradientShift 5s ease infinite;
    background-size: 200% auto;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.hero p {
    font-size: clamp(1.1rem, 4vw, 1.5rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* === Scroll Down Indicator === */
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.scroll-indicator.hidden {
    opacity: 0;
    pointer-events: none;
}

.scroll-text {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 0.8rem;
    letter-spacing: 1px;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--accent-red);
    border-bottom: 2px solid var(--accent-red);
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0) rotate(45deg);
    }

    40% {
        transform: translateY(-10px) rotate(45deg);
    }

    60% {
        transform: translateY(-5px) rotate(45deg);
    }
}

section {
    margin-bottom: 4rem;
    scroll-margin-top: 100px;
}

h2 {
    font-size: clamp(1.8rem, 5vw, 2.2rem);
    margin-bottom: 2rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg,
            var(--accent-red),
            var(--accent-dark-red));
    border-radius: 3px;
}

/* === Projects grid === */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.project-card h3 {
    font-size: clamp(1.2rem, 3vw, 1.4rem);
    margin-bottom: 1rem;
    color: var(--accent-red);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-card p {
    color: var(--text-secondary);
    flex-grow: 1;
    margin-bottom: 1.5rem;
    font-size: 1em;
}

.project-links {
    margin-top: auto;
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--text-secondary);
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: var(--transition-smooth);
}

.project-link:hover {
    color: var(--accent-red);
}

/* === Concept badge === */
.concept-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(90deg,
            var(--accent-red),
            var(--accent-dark-red));
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8em;
    font-weight: 600;
}

/* === Private project cards === */
.private-project {
    opacity: 0.85;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.private-project p {
    color: var(--text-secondary);
    flex-grow: 1;
    margin-bottom: 1.5rem;
    font-size: 1em;
}

.private-project::before {
    content: "\f023";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    top: 1rem;
    right: 1rem;
    color: var(--accent-red);
}

.private-project h3 {
    font-size: clamp(1.2rem, 3vw, 1.4rem);
    margin-bottom: 1rem;
    color: var(--accent-red);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* === Disclaimer === */
.disclaimer {
    margin-top: 2rem;
    border-left: 4px solid rgba(255, 59, 48, 0.5);
}

.disclaimer p {
    color: var(--text-secondary);
    font-size: 0.9em;
    line-height: 1.6;
}

/* === About section === */
.about {
    text-align: center;
    max-width: 100%;
    margin: 0 auto;
    position: relative;
}

.about p {
    font-size: clamp(1.1rem, 3vw, 1.3rem);
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* === Tech stack === */
.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    text-align: center;
    padding: 1rem;
    cursor: pointer;
}

.tech-item i {
    font-size: clamp(2rem, 6vw, 2.5rem);
    margin-bottom: 0.5rem;
    transition: var(--transition-smooth);
}

.tech-item:hover i {
    transform: scale(1.2);
}

.tech-item span {
    font-size: 0.9em;
    color: var(--text-secondary);
}

/* === Timeline === */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: "";
    position: absolute;
    width: 6px;
    background: linear-gradient(to bottom,
            var(--accent-red),
            var(--accent-dark-red));
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
    border-radius: 10px;
}

.timeline-item {
    position: relative;
    width: 45%;
    margin-bottom: 3rem;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 55%;
}

.timeline-item::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--accent-red);
    border-radius: 50%;
    top: 1.5rem;
    right: -13px;
    z-index: 1;
}

.timeline-item:nth-child(even)::after {
    left: -13px;
}

.timeline-age {
    font-weight: bold;
    color: var(--accent-light-red);
    margin-bottom: 0.5rem;
    font-size: 1em;
}

/* === Footer === */
footer {
    text-align: center;
    padding: 1rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 80px;
    margin-bottom: 2rem;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.95em;
    line-height: 1.6;
    margin: 0 auto 0.5rem;
    max-width: 650px;
    text-align: center;
    padding: 0.5em 1em;
    word-break: break-word;
}

.github-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1em;
    transition: var(--transition-smooth);
}

.github-link:hover {
    color: var(--accent-light-red);
}

.github-link i {
    margin-right: 0.5rem;
}

/* === Responsive design === */
@media (max-width: 1200px) {
    :root {
        --base-font-size: 0.95rem;
    }
}

@media (max-width: 900px) {
    :root {
        --base-font-size: 0.9rem;
    }

    .section-selector {
        padding: 1rem;
        gap: 1rem;
    }

    .nav-container.scrolled .section-selector {
        padding: 0.75rem 1.25rem;
        gap: 0.5rem;
        min-width: auto;
    }

    .nav-btn {
        width: 36px;
        height: 36px;
    }

    .hero h1 {
        font-size: clamp(2rem, 8vw, 2.5rem);
    }
}

@media (max-width: 768px) {
    :root {
        --base-font-size: 0.85rem;
    }

    .hero h1 {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
    }

    .hero p {
        font-size: clamp(1rem, 4vw, 1.2rem);
    }

    .container {
        margin-top: 4rem;
        padding: 1.5rem;
    }

    .timeline::after {
        left: 31px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
        left: 0 !important;
    }

    .timeline-item::after {
        left: 18px !important;
        right: auto !important;
    }

    .nav-container {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    /* == Staggered animation for mobile menu items == */
    .mobile-menu.open .mobile-nav-btn:nth-child(1) {
        transition-delay: 0.1s;
    }

    .mobile-menu.open .mobile-nav-btn:nth-child(2) {
        transition-delay: 0.15s;
    }

    .mobile-menu.open .mobile-nav-btn:nth-child(3) {
        transition-delay: 0.2s;
    }

    .mobile-menu.open .mobile-nav-btn:nth-child(4) {
        transition-delay: 0.25s;
    }

    .mobile-menu.open .mobile-nav-btn:nth-child(5) {
        transition-delay: 0.3s;
    }

    .mobile-menu.open .mobile-nav-btn:nth-child(6) {
        transition-delay: 0.35s;
    }

    .mobile-menu.open .mobile-nav-btn:nth-child(7) {
        transition-delay: 0.4s;
    }

    .mobile-menu.open .mobile-nav-btn:nth-child(8) {
        transition-delay: 0.45s;
    }

    footer {
        min-height: 70px;
    }

    .footer-text {
        font-size: 0.85em;
    }

    .github-link {
        font-size: 0.95em;
    }

    .hero {
        margin-top: -20px;
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --base-font-size: 0.8rem;
    }

    .hero h1 {
        font-size: clamp(1.6rem, 8vw, 2rem);
    }

    .hero p {
        font-size: clamp(0.9rem, 4vw, 1rem);
    }

    h2 {
        font-size: clamp(1.5rem, 5vw, 1.8rem);
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .container {
        margin-top: 3rem;
        padding: 1rem;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }

    footer {
        padding: 0.8rem 0;
        min-height: 65px;
        margin-bottom: 1.5rem;
    }

    .footer-text {
        font-size: 0.8em;
        margin-bottom: 0.4rem;
    }

    .github-link {
        font-size: 0.9em;
    }

    .hero {
        margin-top: -30px;
    }

    section {
        margin-bottom: 3rem;
    }

    .tech-item {
        width: 80px;
        height: 80px;
    }

    .tech-item i {
        font-size: 1.8rem;
    }
}

/* === For very small phones === */
@media (max-width: 380px) {
    :root {
        --base-font-size: 0.75rem;
    }

    .about p {
        font-size: clamp(0.9rem, 3vw, 1rem);
        line-height: 1.6;
    }

    /* == Remove glass effect from about section on mobile == */
    #about .glass-panel {
        background: transparent;
        backdrop-filter: none;
        border: none;
        box-shadow: none;
        padding: 1rem 0;
    }

    .hero h1 {
        font-size: clamp(1.3rem, 7vw, 1.9rem);
    }

    .hero p {
        font-size: clamp(0.85rem, 4vw, 0.95rem);
    }

    h2 {
        font-size: clamp(1.3rem, 5vw, 1.6rem);
    }

    .hero {
        margin-top: -40px;
    }

    .tech-item {
        width: 70px;
        height: 70px;
        gap: 0.5rem;
    }

    .tech-item i {
        font-size: 1.5rem;
    }
}

/* === For standard mobile phones === */
@media (max-width: 480px) {
    .about p {
        font-size: clamp(1rem, 3vw, 1.1rem);
        line-height: 1.7;
    }

    /* == Remove glass effect from about section on mobile == */
    #about .glass-panel {
        background: transparent;
        backdrop-filter: none;
        border: none;
        box-shadow: none;
        padding: 1.2rem 0;
    }

    #about {
        padding: 0 0.5rem;
    }
}

/* === For tablets and larger phones - keep the glass effect === */
@media (min-width: 481px) and (max-width: 768px) {
    .about p {
        font-size: clamp(1.1rem, 3vw, 1.2rem);
    }
}