/* =====================================================
   SENIOR DEVELOPER PORTFOLIO
   STYLE.CSS PART 1

   - Reset
   - Variables
   - 3D Background
   - Loader
   - Navbar
   - Hero Section
===================================================== */

/* =========================
   GOOGLE FONT
========================= */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');

/* =========================
   RESET
========================= */

* {
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Poppins',sans-serif;
}

html {
    scroll-behavior:smooth;
}

body {
    background:var(--bg);
    color:var(--text);
    overflow-x:hidden;
}

a {
    text-decoration:none;
    color:var(--text);
}

img {
    max-width:100%;
    display:block;
}

/* =========================
   VARIABLES
========================= */

:root {
    --primary:#3b82f6;
    --secondary:#8b5cf6;
    --cyan:#22d3ee;
    --dark:#050816;

    --bg:#050816;
    --text:#ffffff;
    --text-secondary:#b8c4dd;
    --text-muted:#94a3b8;

    --glass: rgba(255,255,255,0.08);
    --border: rgba(255,255,255,0.15);
    --shadow: 0 0 40px rgba(59,130,246,.4);

    --grid-line: rgba(255,255,255,.04);
    --input-bg: rgba(255,255,255,.08);
    --header-bg: rgba(5,8,22,.35);
    --header-bg-scrolled: rgba(5,8,22,.85);
    --footer-bg: rgba(0,0,0,.3);
    --track-bg: rgba(255,255,255,.1);
    --orb-opacity: .7;

    color-scheme: dark;
}

/* =========================
   LIGHT THEME
========================= */

[data-theme="light"] {
    --bg:#f4f6fb;
    --text:#0f172a;
    --text-secondary:#3b4a63;
    --text-muted:#5b6b85;

    --glass: rgba(15,23,42,0.045);
    --border: rgba(15,23,42,0.12);
    --shadow: 0 0 40px rgba(59,130,246,.15);

    --grid-line: rgba(15,23,42,.05);
    --input-bg: rgba(15,23,42,.04);
    --header-bg: rgba(244,246,251,.6);
    --header-bg-scrolled: rgba(244,246,251,.92);
    --footer-bg: rgba(15,23,42,.04);
    --track-bg: rgba(15,23,42,.1);
    --orb-opacity: .35;

    color-scheme: light;
}

html {
    transition: background-color .4s ease;
}

body,
header,
footer,
.hero-image,
.about-image,
.info div,
.skill-card,
.achievement-card,
.stat-box,
.project-card,
.timeline-content,
.service-card,
.contact-info,
.contact-form input,
.contact-form textarea,
.footer-social a {
    transition: background-color .4s ease, color .4s ease, border-color .4s ease;
}

/* =========================
   3D BACKGROUND
========================= */

.background {
    position:fixed;
    inset:0;
    overflow:hidden;
    z-index:-1;
}

/* Moving Grid */

.grid {
    position:absolute;
    width:100%;
    height:100%;
    background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 70px 70px;
    animation:gridMove 25s linear infinite;
}

@keyframes gridMove {
    from {
        transform:translateY(0);
    }

    to {
        transform:translateY(70px);
    }
}

/* =========================
   GLOWING ORBS
========================= */

.orb {
    position:absolute;
    border-radius:50%;
    filter:blur(80px);
    opacity:var(--orb-opacity);
    animation: floating 12s infinite ease-in-out;
}

.orb:nth-child(1) {
    width:400px;
    height:400px;
    background:#2563eb;
    top:-150px;
    left:-150px;
}

.orb:nth-child(2) {
    width:350px;
    height:350px;
    background:#7c3aed;
    right:-120px;
    top:200px;
}

.orb:nth-child(3) {
    width:300px;
    height:300px;
    background:#06b6d4;
    bottom:-120px;
    left:40%;
}

@keyframes floating {
    0%,100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-50px) rotate(180deg);
    }
}

/* =========================
   LOADER
========================= */

.loader {
    position:fixed;
    inset:0;
    background:var(--bg);
    display:flex;
    justify-content:center;
    align-items:center;
    flex-direction:column;
    z-index:9999;
}

.loader-circle {
    width:80px;
    height:80px;
    border-radius:50%;
    border: 5px solid transparent;
    border-top-color: var(--primary);
    animation: spin 1s linear infinite;
}

.loader h2 {
    margin-top:20px;
    color:var(--text);
    letter-spacing:2px;
}

@keyframes spin {
    from {
        transform:rotate(0);
    }

    to {
        transform:rotate(360deg);
    }
}

/* =========================
   NAVBAR
========================= */

header {
    position:fixed;
    top:0;
    left:0;
    width:100%;
    padding: 25px 10%;
    display:flex;
    justify-content:space-between;
    align-items:center;
    backdrop-filter: blur(20px);
    background: var(--header-bg);
    border-bottom: 1px solid var(--border);
    z-index:1000;
    transition: background-color .4s ease, border-color .4s ease;
}

header.scrolled {
    background: var(--header-bg-scrolled);
}

.logo {
    font-size:32px;
    font-weight:800;
    letter-spacing:2px;
}

.logo span {
    color:var(--primary);
}

nav {
    display:flex;
    gap:35px;
}

nav a {
    position:relative;
    font-weight:500;
    transition:.3s;
}

nav a::after {
    content:"";
    position:absolute;
    width:0;
    height:3px;
    bottom:-8px;
    left:0;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition:.3s;
}

nav a:hover::after {
    width:100%;
}

nav a:hover {
    color:var(--cyan);
}

.menu-btn {
    display:none;
    font-size:25px;
}

/* =========================
   THEME TOGGLE
========================= */

.header-actions {
    display:flex;
    align-items:center;
    gap:20px;
}

.theme-toggle {
    width:44px;
    height:44px;
    display:flex;
    justify-content:center;
    align-items:center;
    border-radius:50%;
    background: var(--glass);
    border: 1px solid var(--border);
    color: var(--text);
    font-size:18px;
    cursor:pointer;
    transition: background-color .4s ease, border-color .4s ease, transform .3s ease;
}

.theme-toggle:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.theme-toggle .fa-sun {
    display:none;
    color:#fbbf24;
}

[data-theme="light"] .theme-toggle .fa-moon {
    display:none;
}

[data-theme="light"] .theme-toggle .fa-sun {
    display:inline-block;
}

/* =========================
   HERO SECTION
========================= */

.hero {
    min-height:100vh;
    padding: 150px 10% 80px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.hero-text {
    max-width:650px;
}

.welcome {
    color: var(--cyan);
    font-size:24px;
}

.hero-text h1 {
    font-size:75px;
    line-height:1.1;
    margin:15px 0;
    font-weight:800;
}

.hero-text h2 {
    font-size:38px;
    color: var(--primary);
}

.hero-text p {
    text-align: justify;
    margin-top:25px;
    line-height:1.8;
    color:var(--text-secondary);
    font-size:18px;
}

/* BUTTONS */

.btn-group {
    margin-top:40px;
    display:flex;
    gap:20px;
}

.btn {
    padding: 15px 35px;
    border-radius:50px;
    font-weight:600;
    transition:.4s;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    box-shadow: 0 0 30px rgba(59,130,246,.5);
}

.btn-primary:hover {
    transform: translateY(-8px);
}

.btn-outline {
    border: 2px solid var(--primary);
}

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

/* =========================
   PROFILE 3D CARD
========================= */

.hero-image {
    width:430px;
    height:430px;
    border-radius:50%;
    display:flex;
    justify-content:center;
    align-items:center;
    background: var(--glass);
    backdrop-filter:blur(25px);
    border:1px solid var(--border);
    box-shadow: var(--shadow);
}

.profile-card img {
    width: 100%;
    height:90%;
    border-radius:50%;
    object-fit:cover;
}

/* =========================
   SECTION TITLE
========================= */

.section-title {
    text-align:center;
    margin-bottom:70px;
}

.section-title h2 {
    font-size:45px;
    font-weight:800;
    position:relative;
    display:inline-block;
}

.section-title h2::after {
    content:"";
    position:absolute;
    width:70%;
    height:4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    bottom:-15px;
    left:15%;
    border-radius:20px;
}

.section-title p {
    margin-top:25px;
    color:var(--text-muted);
    font-size:18px;
}

/* =========================
   ABOUT SECTION
========================= */

.about {
    padding: 100px 10%;
}

.about-container {
    display:flex;
    align-items:center;
    justify-content:center;
    gap:80px;
}

.about-image {
    width: 436px;
    height: 520px;
    border-radius:30px;
    padding:20px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.about-image img {
    width:100%;
    height:100%;
    object-fit:cover;
    border-radius:20px;
}

.about-text {
    max-width:600px;
}

.about-text h3 {
    font-size:35px;
    margin-bottom:20px;
    color: var(--cyan);
}

.about-text p {
    color:var(--text-secondary);
    line-height:1.9;
    font-size:17px;
    text-align: justify;
}

.info {
    margin-top:35px;
    display:grid;
    grid-template-columns: repeat(3,1fr);
    gap:20px;
}

.info div {
    background: var(--glass);
    padding:20px;
    border-radius:15px;
    border: 1px solid var(--border);
    transition:.4s;
}

.info div:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.info h4 {
    color: var(--primary);
}

.info span {
    color:var(--text-secondary);
    font-size:14px;
}

/* =========================
   SKILLS SECTION
========================= */

.skills {
    padding: 100px 10%;
}

.skills-container {
    display:grid;
    grid-template-columns: repeat(3,1fr);
    gap:30px;
}

.skill-card {
    background: var(--glass);
    border: 1px solid var(--border);
    padding:35px;
    border-radius:25px;
    text-align:center;
    backdrop-filter: blur(20px);
    transition:.4s;
}

.skill-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow);
}

.skill-card i {
    font-size:55px;
    color: var(--primary);
    margin-bottom:20px;
}

.skill-card h3 {
    margin-bottom:20px;
    font-size:22px;
}

.skill-bar {
    width:100%;
    height:10px;
    background: var(--track-bg);
    border-radius:20px;
    overflow:hidden;
}

.skill-bar span {
    display:block;
    height:100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius:20px;
}

.skill-card p {
    margin-top:15px;
    color:var(--text-muted);
}

/* =========================
   ACHIEVEMENT SECTION
========================= */

.achievement {
    padding: 100px 10%;
}

.achievement-container {
    display:grid;
    grid-template-columns: repeat(4,1fr);
    gap:25px;
}

.achievement-card {
    padding:35px 25px;
    text-align:center;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius:25px;
    backdrop-filter: blur(20px);
    transition:.5s;
}

.achievement-card:hover {
    transform: translateY(-15px) rotateX(8deg);
    box-shadow: 0 0 40px rgba(139,92,246,.5);
}

.achievement-card .icon {
    width:80px;
    height:80px;
    margin:auto;
    display:flex;
    justify-content:center;
    align-items:center;
    border-radius:50%;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    font-size:35px;
    margin-bottom:25px;
}

.achievement-card h3 {
    font-size:22px;
    margin-bottom:15px;
}

.achievement-card p {
    color:var(--text-secondary);
    line-height:1.7;
}

/* =========================
   STATISTICS
========================= */

.statistics {
    padding: 80px 10%;
}

.stats-container {
    display:grid;
    grid-template-columns: repeat(4,1fr);
    gap:30px;
}

.stat-box {
    text-align:center;
    padding:40px;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius:25px;
    backdrop-filter: blur(20px);
    transition:.4s;
}

.stat-box:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.stat-box h2 {
    font-size:55px;
    color: var(--cyan);
}

.stat-box p {
    color:var(--text-muted);
    font-size:18px;
}

/* =====================================================
   STYLE.CSS PART 3

   - Projects
   - Timeline
   - Services
   - Contact
   - Footer
   - Responsive Design
===================================================== */

/* =========================
   PROJECT SECTION
========================= */

.projects {
    padding: 100px 10%;
}

.project-container {
    display:grid;
    grid-template-columns: repeat(3,1fr);
    gap:35px;
}

.project-card {
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius:25px;
    overflow:hidden;
    backdrop-filter: blur(20px);
    transition:.5s;
}

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

.project-card img {
    width:100%;
    height:230px;
    object-fit:cover;
}

.project-content {
    padding:30px;
}

.project-content h3 {
    font-size:25px;
    margin-bottom:15px;
}

.project-content p {
    color:var(--text-secondary);
    line-height:1.7;
}

.tech {
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin:20px 0;
}

.tech span {
    padding: 7px 15px;
    background: rgba(59,130,246,.15);
    border-radius:30px;
    color: var(--cyan);
    font-size:13px;
}

.project-content a {
    display:inline-block;
    margin-top:10px;
    color: var(--primary);
    font-weight:600;
}

/* =========================
   EXPERIENCE TIMELINE
========================= */

.timeline-section {
    padding: 100px 10%;
}

.timeline-container {
    position:relative;
    max-width:900px;
    margin:auto;
}

.timeline-container::before {
    content:"";
    position:absolute;
    left:50%;
    transform:translateX(-50%);
    width:3px;
    height:100%;
    background: linear-gradient(var(--primary), var(--secondary));
}

.timeline-item {
    width:50%;
    padding:30px;
    position:relative;
}

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

.timeline-item:nth-child(even) {
    left:50%;
}

.timeline-dot {
    position:absolute;
    top:40px;
    width:20px;
    height:20px;
    background: var(--cyan);
    border-radius:50%;
    box-shadow: 0 0 25px var(--cyan);
}

.timeline-item:nth-child(odd) .timeline-dot {
    right:-10px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left:-10px;
}

.timeline-content {
    padding:30px;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius:25px;
    backdrop-filter: blur(20px);
    transition:.4s;
}

.timeline-content:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.timeline-content span {
    color: var(--cyan);
    font-weight:700;
}

.timeline-content h3 {
    margin:15px 0;
}

.timeline-content p {
    color:var(--text-secondary);
    line-height:1.7;
}

/* =========================
   SERVICES
========================= */

.services {
    padding: 100px 10%;
}

.service-container {
    display:grid;
    grid-template-columns: repeat(3,1fr);
    gap:30px;
}

.service-card {
    padding:40px;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius:25px;
    transition:.4s;
}

.service-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow);
}

.service-card i {
    font-size:50px;
    color: var(--primary);
    margin-bottom:25px;
}

.service-card p {
    margin-top:15px;
    color:var(--text-secondary);
    line-height:1.7;
    text-align: justify;
}

/* =========================
   CONTACT
========================= */

.contact {
    padding: 100px 10%;
}

.contact-container {
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap:50px;
}

.contact-info {
    padding:40px;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius:25px;
    backdrop-filter: blur(20px);
}

.contact-info h3 {
    font-size:35px;
}

.contact-info p {
    margin:20px 0;
    color:var(--text-secondary);
}

.contact-box {
    display:flex;
    align-items:center;
    gap:20px;
    margin:25px 0;
}

.contact-box i {
    width:50px;
    height:50px;
    display:flex;
    justify-content:center;
    align-items:center;
    border-radius:50%;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
}

.contact-form {
    display:flex;
    flex-direction:column;
    gap:20px;
}

.contact-form input, .contact-form textarea {
    width:100%;
    padding:18px;
    border:none;
    outline:none;
    border-radius:15px;
    background: var(--input-bg);
    color:var(--text);
    border: 1px solid var(--border);
}

.contact-form textarea {
    resize:none;
}

/* =========================
   FOOTER
========================= */

footer {
    padding: 60px 10%;
    background: var(--footer-bg);
    text-align:center;
}

.footer-content h2 {
    font-size:35px;
}

.footer-content span {
    color: var(--primary);
}

.footer-content p {
    color:var(--text-muted);
    margin:20px 0;
}

.footer-social {
    display:flex;
    justify-content:center;
    gap:20px;
}

.footer-social a {
    width:45px;
    height:45px;
    border-radius:50%;
    display:flex;
    justify-content:center;
    align-items:center;
    background: var(--glass);
    transition:.3s;
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-5px);
}

/* =========================
   BACK TO TOP
========================= */

.top-btn {
    position:fixed;
    right:30px;
    bottom:30px;
    width:50px;
    height:50px;
    display:flex;
    justify-content:center;
    align-items:center;
    border-radius:50%;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    box-shadow: var(--shadow);
}

/* =========================
   RESPONSIVE DESIGN
========================= */

@media(max-width:1100px) {
    .hero {
        flex-direction:column;
        text-align:center;
        gap:60px;
    }

    .skills-container, .achievement-container, .stats-container, .project-container, .service-container {
        grid-template-columns: repeat(2,1fr);
    }

    .about-container {
        flex-direction:column;
    }
}

@media(max-width:768px) {
    header {
        padding:20px 5%;
    }

    nav {
        display:none;
    }

    .menu-btn {
        display:block;
    }

    .header-actions {
        gap:15px;
    }

    .hero-text h1 {
        font-size:45px;
    }

    .hero-text h2 {
        font-size:25px;
    }

    .hero-image {
        width:300px;
        height:300px;
    }

    .skills-container, .achievement-container, .stats-container, .project-container, .service-container, .contact-container {
        grid-template-columns:1fr;
    }

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

    .timeline-container::before {
        left:10px;
    }

    .timeline-item, .timeline-item:nth-child(even) {
        width:100%;
        left:0;
        padding-left:50px;
    }

    .timeline-item .timeline-dot, .timeline-item:nth-child(even) .timeline-dot {
        left:0;
    }

    .section-title h2 {
        font-size:35px;
    }
}