/* ==========================================
   DESIGN SYSTEM - www.impesoft.com
   Modern CSS, light-dark() vars, SVG & CSS Animations
   ========================================== */

:root {
    color-scheme: light dark;
    /* Responsive light-dark theme colors */
    --bg-base: light-dark(#f8fafc, #090d16);
    --bg-surface: light-dark(#ffffff, #111827);
    --bg-surface-glass: light-dark(rgba(255, 255, 255, 0.7), rgba(17, 24, 39, 0.65));
    --navbar-bg: light-dark(rgba(248, 250, 252, 0.95), rgba(9, 13, 22, 0.95));
    --text-primary: light-dark(#0f172a, #f8fafc);
    --text-secondary: light-dark(#475569, #94a3b8);
    --text-muted: light-dark(#64748b, #64748b);
    --border-color: light-dark(rgba(0, 0, 0, 0.08), rgba(255, 255, 255, 0.08));
    --border-hover: light-dark(rgba(124, 58, 237, 0.25), rgba(34, 211, 238, 0.25));
    --accent-primary: light-dark(#7c3aed, #22d3ee);
    /* Violet in light / Cyan in dark */
    --accent-secondary: light-dark(#2563eb, #8b5cf6);
    --card-shadow: light-dark(0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 10px 30px -10px rgba(0, 0, 0, 0.5));
    --neon-glow: light-dark(rgba(124, 58, 237, 0.15), rgba(34, 211, 238, 0.25));
    --font-heading: 'Source Code Pro', monospace;
    --font-body: 'Source Code Pro', monospace;
}

/* Reset & Base Rules */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 65px;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Loading Screen Animation */
.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: var(--bg-base);
}

.loading-svg {
    width: 80px;
    height: 80px;
}

    .loading-svg circle {
        fill: none;
        stroke-width: 6;
        transform-origin: 50% 50%;
    }

    .loading-svg .bg-circle {
        stroke: var(--border-color);
    }

    .loading-svg .active-circle {
        stroke: var(--accent-primary);
        stroke-linecap: round;
        animation: drawCircle 1.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    }

.loading-text {
    margin-top: 1.5rem;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    animation: pulseGlow 1.8s ease-in-out infinite;
}

@keyframes drawCircle {
    0% {
        stroke-dasharray: 1 200;
        stroke-dashoffset: 0;
    }

    50% {
        stroke-dasharray: 120 200;
        stroke-dashoffset: -40;
    }

    100% {
        stroke-dasharray: 120 200;
        stroke-dashoffset: -250;
    }
}

@keyframes pulseGlow {

    0%, 100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: var(--accent-primary);
    }

/* Layout Core & Navbar */
.app-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: var(--navbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0.75rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-video {
    height: 48px;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

    .logo-video:hover {
        transform: scale(1.05);
    }

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

    .nav-links a {
        text-decoration: none;
        color: var(--text-secondary);
        font-size: 0.95rem;
        font-weight: 500;
        transition: color 0.3s ease;
        position: relative;
        padding: 0.25rem 0;
    }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            transition: width 0.3s ease;
        }

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

/* Hamburger menu for mobile */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.5rem;
}

/* Main content wrapper */
.main-content {
    flex: 1;
    margin-top: 65px;
    /* Offset header height */
}

/* Sections Base */
.section {
    padding: 6rem 2rem;
    max-width: 1440px;
    margin: 0 auto;
    min-height: calc(100vh - 65px);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 1rem;
    text-align: center;
    background: linear-gradient(90deg, var(--text-primary), var(--accent-primary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Section Styles */
.hero-sec {
    min-height: calc(100vh - 65px);
    display: grid;
    align-content: center;
    position: relative;
}

.hero-content {
    grid-area: 1 / 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    z-index: 2;
    pointer-events: none; /* Let clicks pass through empty spaces to the image if needed */
}

    .hero-content > * {
        pointer-events: auto; /* Ensure text and buttons are clickable */
    }

.hero-subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
}

.hero-bottom {

    width: 100%;
    margin-top: auto;
    margin-bottom: 4rlh;
}

.hero-title {
    font-size: clamp(2.2rem, 3.8vw + 0.5rem, 3.5rem);
    line-height: 1.2;
    margin: 0;
    text-shadow: 2px 4px 10px rgba(0, 0, 0, 1);
}

.hero-title-nowrap {
    display: inline-block;
    white-space: nowrap;
}

.hero-title-mobile {
    display: none;
}

.cursor {
    animation: blink 1s step-end infinite;
}

@keyframes blink {

    from, to {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.hero-typed {
    height: 1.5em;
    color: var(--text-secondary);
    font-size: 1.25rem;
}

/*.hero-buttons {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    align-content: end;
    justify-content: end;
    top: -100%;
}
*/
.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #ffffff;
    border: 1px solid var(--border-color);
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px var(--neon-glow);
}

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px var(--neon-glow);
    }

.btn-secondary {
    /*    background: transparent;
*/ background: linear-gradient(45deg, rgb(from var(--accent-primary) r g b / .25), rgb(from var(--accent-secondary) r g b / .25) );
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s, border-color 0.2s;
}

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

/* Hero Image Illustration */
.hero-visual {
    grid-area: 1 / 1;
    justify-self: end;
    width: 60%; /* Image takes up the right side */
    z-index: 1;
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
    padding-bottom: 4.5rem; /* Lifts the image so the bottom button sits underneath it */
    position: relative;
    -webkit-mask-image: linear-gradient(to right, transparent, black 30%);
    mask-image: linear-gradient(to right, transparent, black 30%);
}

.hero-image {
    max-width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 8px; /* Optional slight rounding */
}

/* Glassmorphic card definition */
.glass-card {
    background: var(--bg-surface-glass);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

    .glass-card:hover {
        border-color: var(--border-hover);
        transform: translateY(-4px);
        box-shadow: 0 10px 25px var(--neon-glow);
    }

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.about-avatar-wrapper {
    display: flex;
    justify-content: center;
}

.about-bio {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.bio-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
}

/* Skills Grid */
.skills-grid {
    margin-top: 2rem;
}

.skills-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.skills-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* Skill Meter Component */
.skill-bar-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 500;
}

.skill-track {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    width: 0;
    transition: width 1.5s cubic-bezier(0.1, 0.8, 0.25, 1);
    border-radius: 4px;
}

/* Timeline component */
.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 2rem;
}

    .timeline-container::before {
        content: '';
        position: absolute;
        left: 7px;
        top: 0;
        height: 100%;
        width: 2px;
        background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    }

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

    .timeline-item.in-view {
        opacity: 1;
        transform: translateX(0);
    }

    .timeline-item::before {
        content: '';
        position: absolute;
        left: -29px;
        top: 6px;
        width: 16px;
        height: 16px;
        border-radius: 50%;
        background-color: var(--bg-base);
        border: 3px solid var(--accent-primary);
        transition: background-color 0.3s, transform 0.3s;
        z-index: 2;
    }

    .timeline-item:hover::before {
        background-color: var(--accent-primary);
        transform: scale(1.2);
    }

.timeline-card {
    padding: 1.5rem;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.timeline-date {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: var(--border-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

.timeline-company {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.timeline-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Services Grids */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 2.5rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.service-icon-wrapper {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--border-color);
    border-radius: 12px;
    color: var(--accent-primary);
    transition: transform 0.3s, background-color 0.3s;
}

.service-card:hover .service-icon-wrapper {
    transform: rotate(10deg) scale(1.1);
    background-color: var(--border-hover);
}

.service-card h3 {
    font-size: 1.25rem;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Projects Grids */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    height: 100%;
}

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

.project-tech {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tech-badge {
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--border-color);
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
}

.project-card h3 {
    font-size: 1.25rem;
}

.project-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    flex-grow: 1;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    align-self: flex-start;
    margin-top: 1rem;
}

    .project-link:hover {
        text-decoration: underline;
    }

/* Slideshow Component */
.slideshow-container {
    position: relative;
    width: 100%;
    height: 200px;
    margin: 15px 0;
    border-radius: 8px;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

    .slide.active {
        opacity: 1;
        z-index: 1;
        pointer-events: auto;
    }

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

.slide-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    opacity: 0;
    transition: opacity 0.3s, background 0.3s;
    padding: 0;
}

.slideshow-container:hover .slide-btn {
    opacity: 1;
}

.slide-btn:hover {
    background: var(--accent-primary);
}

.slide-btn.prev {
    left: 10px;
}

.slide-btn.next {
    right: 10px;
}

.slide-btn svg {
    width: 18px;
    height: 18px;
}

.slide-dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}

    .slide-dots .dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.4);
        cursor: pointer;
        transition: background 0.3s, transform 0.3s;
    }

        .slide-dots .dot.active {
            background: var(--accent-primary);
            transform: scale(1.2);
        }

/* Lightbox Styles */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.lightbox-content {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .lightbox-content img {
        max-width: calc(100vw - 240px);
        max-height: 90vh;
        object-fit: contain;
        border-radius: 8px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
        border: 1px solid var(--border-color);
    }

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1001;
    transition: background 0.3s, transform 0.2s;
}

    .lightbox-close:hover {
        background: #ef4444;
        transform: scale(1.1);
    }

    .lightbox-close svg {
        width: 24px;
        height: 24px;
    }

.lightbox-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1001;
    transition: background 0.3s, transform 0.2s;
}

    .lightbox-btn:hover {
        background: var(--accent-primary);
        transform: translateY(-50%) scale(1.1);
    }

    .lightbox-btn.prev {
        left: 40px;
    }

    .lightbox-btn.next {
        right: 40px;
    }

@media(max-width: 768px) {
    .lightbox-btn.prev {
        left: 10px;
    }

    .lightbox-btn.next {
        right: 10px;
    }

    .lightbox-content img {
        max-width: calc(100vw - 120px);
    }
}

/* Contact Styles */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info-column {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-detail {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-detail-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.contact-detail-text h4 {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.contact-detail-text p {
    font-size: 1rem;
    font-weight: 500;
}

/* Validation Forms */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

    .form-group label {
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--text-secondary);
    }

.form-control {
    background-color: var(--bg-surface-glass);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

    .form-control:focus {
        outline: none;
        border-color: var(--accent-primary);
        box-shadow: 0 0 0 3px var(--neon-glow);
    }

    .form-control.valid.modified {
        border-color: #10b981;
    }

    .form-control.invalid {
        border-color: #ef4444;
    }

.validation-message {
    color: #ef4444;
    font-size: 0.8rem;
    font-weight: 500;
}

.form-status {
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    display: none;
}

    .form-status.success {
        display: block;
        background-color: rgba(16, 185, 129, 0.1);
        border: 1px solid rgba(16, 185, 129, 0.2);
        color: #10b981;
    }

/* Footer styling */
.main-footer {
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
    text-align: center;
    background-color: var(--bg-surface);
}

.footer-content {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-copy {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

    .footer-links a {
        color: var(--text-secondary);
        text-decoration: none;
        font-size: 0.9rem;
        transition: color 0.2s;
    }

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

/* Responsive Overrides */
@media(max-width: 992px) {
    .hero-visual {
        margin: 0 auto;
    }
    .hero-sec {
        display: flex;
        flex-direction: column;
        justify-content: center;
        text-align: center;
        padding-top: 2rem;
        padding-bottom: 2rem;
        gap: 2rem;
    }
    .hero-desc {
        margin: auto;
    }
    .hero-title {
        font-size: 2.75rem;
        margin-top: auto;
    }

    .hero-title-nowrap {
        display: none !important;
    }

    .hero-title-mobile {
        display: inline-block !important;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media(max-width: 768px) {
    .hero-visual {
        width: 100%;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--navbar-bg);
        padding: 1.5rem;
        border-bottom: 1px solid var(--border-color);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        align-items: center;
        gap: 1.5rem;
    }

        .nav-links.active-mobile {
            display: flex;
        }

    .nav-toggle {
        display: block;
    }

    .skills-list {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
    }
}