/* ===== CSS Variables ===== */
:root {
    --color-bg-primary: #0E1015;
    --color-bg-secondary: #14161B;
    --color-bg-tertiary: #161922;
    --color-text-primary: #EAECEF;
    --color-text-secondary: #94a3b8;
    --color-text-tertiary: #bdc5d4;
    --color-accent: #A384FF;
    --color-accent-dark: #7C5DFF;
    --color-accent-secondary: #F7DF1E;
    --sidebar-width: 80px;
    --transition-speed: 0.3s;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== General Styling and Resets ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family:Arial, Helvetica, sans-serif;
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Prevents scrolling when mobile menu is open */
body.sidebar-open {
    overflow: hidden;
}

/* ===== Skip Link for Accessibility ===== */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-accent);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* ===== Hamburger Menu (Mobile First) ===== */
.hamburger {
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    width: 30px;
    height: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    z-index: 1002; /* Above sidebar and overlay */
    background: none;
    border: none;
    padding: 0;
}

.hamburger span {
    width: 100%;
    height: 3px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-speed) var(--transition-smooth);
    transform-origin: center;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(10.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-10.5px) rotate(-45deg);
}


/* ===== Sidebar Navigation (Mobile First) ===== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 250px; /* Wider for better touch targets on mobile */
    height: 100vh;
    background: rgba(22, 25, 34, 0.9);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(163, 132, 255, 0.1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 2.5rem 0;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.4s var(--transition-smooth);
    will-change: transform;
}

.sidebar.show {
    transform: translateX(0);
}

/* Sidebar Links now have text for mobile view */
.sidebar-nav a {
    position: relative;
    color: #8D949E;
    text-decoration: none;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 1rem; /* Space between icon and new text */
    padding: 0.5rem 1.5rem;
    font-size: 1.1rem;
    width: 100%;
}
.sidebar-nav a::after {
    content: attr(data-tooltip); /* Use tooltip content as text */
}

/* Hide tooltips on mobile */
.sidebar-nav a::before, .sidebar-socials a::before {
    display: none;
}

.sidebar-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-primary);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-speed);
}

.sidebar-top:hover {
    transform: scale(1.05);
    color: var(--color-accent-secondary);
}

.logo {
    width: 48px;
    height: 48px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    width: 100%;
}

.sidebar-socials {
    display: flex;
    gap: 1.5rem; /* Horizontal layout for mobile */
}

.sidebar-socials a svg,
.sidebar-nav a svg {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.sidebar-nav a:hover,
.sidebar-nav a:focus,
.sidebar-nav a.active {
    color: var(--color-accent-secondary);
    background: rgba(163, 132, 255, 0.1);
    outline: none;
}


/* ===== Overlay ===== */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed);
}

.overlay.show {
    opacity: 1;
    visibility: visible;
}


/* ===== Main Content ===== */
.main-content {
    position: relative;
    isolation: isolate;
    transition: margin-left var(--transition-speed) var(--transition-smooth);
}

#bg-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

section {
    min-height: 100vh;
    padding: 60px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    position: relative;
}

/* ===== Hero Section ===== */
.hero {
    text-align: center;
}

.hero h1 {
    font-size: clamp(2.5rem, 10vw, 4rem);
    font-weight: bold;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero .name-box {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    vertical-align: middle;
}

.hero-subtitle {
    color: var(--color-text-secondary);
    font-size: clamp(1rem, 4vw, 1.125rem);
    margin-bottom: 2.5rem;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
}

.cta-button {
    display: inline-block;
    text-decoration: none;
    padding: 14px 28px;
    border: 2px solid var(--color-accent);
    background: transparent;
    color: var(--color-accent);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    font-size: 0.9rem;
    letter-spacing: 1px;
    border-radius: 8px;
    text-align: center;
}

.cta-button:hover,
.cta-button:focus {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(163, 132, 255, 0.2);
    outline: 2px solid transparent;
}

/* ===== General Section Styling ===== */
.about,
.portfolio,
.contact {
    background: var(--color-bg-tertiary);
    align-items: flex-start;
}

.portfolio > div,
.about > div,
.contact > div {
    width: 100%;
}

h2 {
    font-size: clamp(2rem, 8vw, 3rem);
    font-weight: bold;
    color: var(--color-text-primary);
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--color-accent);
    border-radius: 2px;
}

.about-text, .contact-text {
    font-size: clamp(1rem, 4vw, 1.125rem);
    line-height: 1.8;
    margin-bottom: 3rem;
    color: var(--color-text-tertiary);
}

/* ===== Typing Animation ===== */
.typing-cursor::after {
    content: '|';
    color: var(--color-accent);
    font-weight: bold;
    animation: blink-caret 0.75s step-end infinite;
}

@keyframes blink-caret {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

/* ===== Skills Grid ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
    gap: 1rem;
}

.skill-card {
    background: rgba(40, 44, 58, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(163, 132, 255, 0.1);
    border-radius: 16px;
    padding: 1.5rem 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    transition: all var(--transition-speed);
    cursor: pointer;
}

.skill-card:hover,
.skill-card:focus-within {
    transform: translateY(-8px);
    border-color: rgba(163, 132, 255, 0.5);
    box-shadow: 0 10px 30px rgba(163, 132, 255, 0.1);
    background: rgba(40, 44, 58, 0.8);
}

.skill-icon {
    width: 48px;
    height: 48px;
}
.skill-icon svg, .skill-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.skill-card:hover .skill-icon {
    transform: scale(1.1);
}

.skill-name {
    font-weight: 500;
    color: #e2e8f0;
    font-size: 0.875rem;
}


/* ===== Portfolio Section ===== */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.project-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s var(--transition-smooth);
    min-height: 280px;
    background: var(--color-bg-secondary);
    border: 1px solid rgba(163, 132, 255, 0.1);
    display: flex;
}

.project-card:hover,
.project-card:focus-within {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border-color: rgba(163, 132, 255, 0.5);
}

.project-bg {
    position: absolute; inset: 0; z-index: 0; overflow: hidden;
}

.project-image {
    width: 100%; height: 100%; object-fit: cover; opacity: 0.1; transition: all 0.4s; filter: grayscale(80%);
}

.project-card:hover .project-image {
    opacity: 0.2; transform: scale(1.1); filter: grayscale(20%);
}

.project-info {
    position: relative;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    z-index: 2;
    background: linear-gradient(to top, rgba(14, 16, 21, 0.95) 0%, transparent 70%);
    width: 100%;
}

.project-number {
    position: absolute; top: 1rem; right: 1.5rem; font-size: 2.5rem; font-weight: bold; color: rgba(163, 132, 255, 0.2); transition: all 0.4s;
}
.project-card:hover .project-number { color: rgba(163, 132, 255, 0.4); transform: scale(1.1); }

.project-title {
    font-size: 1.25rem; font-weight: bold; margin-bottom: 0.75rem; color: #ffffff; transition: all var(--transition-speed);
}
.project-card:hover .project-title { color: var(--color-accent); }

.project-tech {
    font-size: 0.875rem; color: var(--color-text-secondary); display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem;
}

.tech-tag {
    background: rgba(163, 132, 255, 0.1); color: var(--color-accent); padding: 0.25rem 0.75rem; border-radius: 12px; font-size: 0.75rem; border: 1px solid rgba(163, 132, 255, 0.2);
}

.project-link {
    display: inline-flex; align-items: center; gap: 0.5rem; color: var(--color-accent); font-size: 0.875rem; font-weight: 600; opacity: 0; transform: translateY(10px); transition: all var(--transition-speed); text-decoration: none;
}

.project-card:hover .project-link, .project-card:focus-within .project-link {
    opacity: 1; transform: translateY(0);
}

.project-link:focus { outline: 2px solid var(--color-accent); outline-offset: 4px; border-radius: 4px;}


/* ===== Contact Section ===== */
.social-links {
    display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center;
}

.social-icon {
    width: 70px; height: 70px; background: rgba(40, 44, 58, 0.5); backdrop-filter: blur(10px); border: 2px solid rgba(163, 132, 255, 0.2); border-radius: 16px; display: flex; align-items: center; justify-content: center; text-decoration: none; transition: all var(--transition-speed); position: relative; overflow: hidden;
}

.social-icon svg {
    width: 32px; height: 32px; transition: all var(--transition-speed); position: relative; z-index: 1; color: var(--color-text-primary);
}
.social-icon:hover, .social-icon:focus {
    transform: translateY(-8px) scale(1.1); box-shadow: 0 10px 30px rgba(163, 132, 255, 0.2); border-color: var(--color-accent); outline: none; background: var(--color-accent);
}


/* ===== Tablet Styles ===== */
@media (min-width: 768px) {
    .hamburger {
        display: none;
    }

    .sidebar {
        width: var(--sidebar-width);
        transform: translateX(0);
        background: var(--color-bg-secondary);
    }
    .sidebar.show {
        transform: translateX(0); /* Ensure it stays visible */
    }

    /* Revert sidebar links to icon-only and enable tooltips */
    .sidebar-nav a {
        justify-content: center;
        padding: 0;
        gap: 0.5rem;
    }
    .sidebar-nav a::after {
        content: ''; /* Hide text content */
    }

    /* Tooltip Styles */
    .sidebar-nav a::before,
    .sidebar-socials a::before {
        display: block;
        content: attr(data-tooltip);
        position: absolute;
        left: 110%;
        top: 50%;
        transform: translateY(-50%) translateX(5px);
        background-color: var(--color-bg-primary);
        color: var(--color-text-primary);
        padding: 0.5rem 1rem;
        border-radius: 6px;
        border: 1px solid rgba(163, 132, 255, 0.2);
        font-size: 0.875rem;
        font-weight: 500;
        white-space: nowrap;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.2s ease, transform 0.2s ease;
        pointer-events: none;
        z-index: 1001;
    }

    .sidebar-nav a:hover::before,
    .sidebar-socials a:hover::before {
        opacity: 1;
        visibility: visible;
        transform: translateY(-50%) translateX(0);
    }
    
    .sidebar-socials {
        flex-direction: column;
        gap: 1.5rem;
    }
    .sidebar-socials a svg {
        width: 20px;
        height: 20px;
    }


    .main-content {
        margin-left: var(--sidebar-width);
    }

    section {
        padding: 80px 40px;
    }
    .hero {
        text-align: left;
    }
    .hero-subtitle,
    .hero-buttons-container {
        margin-left: 0;
        margin-right: 0;
    }

    .hero-buttons-container {
        flex-direction: row;
        max-width: none;
    }
    .cta-button {
        width: auto;
    }

    h2::after {
        width: 80px;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 1.5rem;
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }

    .social-icon {
        width: 80px; height: 80px;
    }
    .social-icon svg {
        width: 36px; height: 36px;
    }
}


/* ===== Desktop Styles ===== */
@media (min-width: 968px) {
    section {
        padding: 80px;
    }
    
    .hero {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .hero-content {
        max-width: 700px;
    }
    .hero h1 {
        font-size: clamp(2.5rem, 8vw, 5rem);
    }
    
    h2::after {
        width: 100px;
    }

    .about-text, .contact-text {
        max-width: 900px;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 2rem;
    }
    .skill-icon { width: 64px; height: 64px; }
    .skill-name { font-size: 1rem; }
    .skill-card { padding: 2rem 1rem; }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
    .project-card {
        min-height: 320px;
    }
    .project-info { padding: 2rem; }
    .project-title { font-size: 1.5rem; }

    .social-icon {
        width: 100px; height: 100px;
    }
    .social-icon svg {
        width: 48px; height: 48px;
    }
}


/* ===== Performance & Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== Print Styles ===== */
@media print {
    .sidebar, .hamburger, #bg-canvas, .overlay {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
    }

    section {
        padding: 2rem 1rem;
        min-height: auto;
        page-break-inside: avoid;
    }

    .hero-buttons-container, .social-links {
        display: none;
    }
}