/* =========================================================
   AZAD ENGINEER PORTFOLIO
   Main Stylesheet
   ========================================================= */


/* =========================================================
   01. ROOT VARIABLES
   ========================================================= */

:root {
    --bg-primary: #080b10;
    --bg-secondary: #0d1118;
    --bg-card: #111720;
    --bg-card-hover: #151d28;

    --text-primary: #f3f6f9;
    --text-secondary: #a7b0bb;
    --text-muted: #6f7a87;

    --accent: #20d9ff;
    --accent-dark: #0aa9c9;
    --accent-soft: rgba(32, 217, 255, 0.10);

    --border: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(32, 217, 255, 0.30);

    --success: #45e69a;

    --container-width: 1180px;

    --transition: 0.3s ease;
}


/* =========================================================
   02. RESET
   ========================================================= */

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: "Inter", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

body::selection {
    background: var(--accent);
    color: #000;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
}

ul {
    list-style: none;
}


/* =========================================================
   03. GLOBAL
   ========================================================= */

.container {
    width: min(var(--container-width), calc(100% - 40px));
    margin: 0 auto;
}

.section {
    padding: 110px 0;
    position: relative;
}

.section-heading {
    display: flex;
    gap: 25px;
    align-items: flex-start;
    margin-bottom: 65px;
}

.section-number {
    font-family: "JetBrains Mono", monospace;
    font-size: 14px;
    color: var(--accent);
    padding-top: 8px;
}

.section-label {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-heading h2 {
    max-width: 700px;
    font-size: clamp(32px, 4vw, 50px);
    line-height: 1.15;
    letter-spacing: -1.5px;
}


/* =========================================================
   04. HEADER / NAVBAR
   ========================================================= */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(8, 11, 16, 0.85);
    border-bottom: 1px solid transparent;
    backdrop-filter: blur(15px);
    transition: var(--transition);
}

.header.scrolled {
    border-bottom-color: var(--border);
    background: rgba(8, 11, 16, 0.96);
}

.navbar {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
    flex-shrink: 0;
}

.logo span {
    font-family: "JetBrains Mono", monospace;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 2px;
}

.logo small {
    color: var(--accent);
    font-size: 8px;
    font-weight: 600;
    letter-spacing: 3px;
    margin-top: 5px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    position: relative;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

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

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

.nav-cv {
    padding: 11px 18px;
    border: 1px solid var(--border-accent);
    color: var(--accent);
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    font-weight: 600;
    transition: var(--transition);
}

.nav-cv:hover {
    background: var(--accent);
    color: #000;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    background: transparent;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}


/* =========================================================
   05. HERO
   ========================================================= */

.hero {
    min-height: 100vh;
    padding-top: 150px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    width: 600px;
    height: 600px;
    right: -200px;
    top: 100px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.04;
    filter: blur(80px);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 80px;
    align-items: center;
}

.eyebrow {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 25px;
}

.hero h1 {
    font-size: clamp(52px, 7vw, 88px);
    line-height: 0.98;
    letter-spacing: -4px;
    margin-bottom: 30px;
}

.hero h1 span {
    color: var(--text-secondary);
}

.hero-description {
    max-width: 680px;
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.8;
}

.hero-description strong {
    color: var(--text-primary);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 38px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 23px;
    font-size: 13px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent);
    color: #000;
}

.btn-primary:hover {
    background: #fff;
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 45px;
    margin-top: 55px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat strong {
    font-family: "JetBrains Mono", monospace;
    color: var(--accent);
    font-size: 24px;
}

.stat span {
    color: var(--text-muted);
    font-size: 11px;
    margin-top: 3px;
}


/* =========================================================
   06. PROFILE CARD
   ========================================================= */

.hero-visual {
    display: flex;
    justify-content: center;
}

.profile-card {
    position: relative;
    width: min(390px, 100%);
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
}

.profile-card::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    left: 14px;
    top: 14px;
    border: 1px solid var(--border-accent);
    z-index: -1;
}

.profile-image-wrapper {
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: #111;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(15%);
    transition: 0.6s ease;
}

.profile-card:hover .profile-image {
    transform: scale(1.03);
}

.profile-info {
    padding: 25px 18px 18px;
}

.profile-role {
    font-family: "JetBrains Mono", monospace;
    color: var(--accent);
    font-size: 10px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.profile-info h2 {
    font-size: 30px;
    margin: 5px 0 15px;
}

.status {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 11px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 10px rgba(69, 230, 154, 0.5);
}


/* =========================================================
   07. ABOUT
   ========================================================= */

.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.about-text {
    max-width: 620px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 22px;
}

.about-text .lead {
    color: var(--text-primary);
    font-size: 20px;
    line-height: 1.7;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.highlight-card {
    padding: 25px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.highlight-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
}

.highlight-icon {
    font-family: "JetBrains Mono", monospace;
    color: var(--accent);
    font-size: 11px;
}

.highlight-card h3 {
    font-size: 18px;
    margin: 15px 0 8px;
}

.highlight-card p {
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.6;
}


/* =========================================================
   08. EXPERIENCE TIMELINE
   ========================================================= */

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 5px;
    bottom: 5px;
    width: 1px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-left: 50px;
    margin-bottom: 65px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 7px;
    width: 15px;
    height: 15px;
    border: 2px solid var(--accent);
    background: var(--bg-primary);
}

.timeline-content {
    padding: 30px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--border-accent);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.experience-date {
    font-family: "JetBrains Mono", monospace;
    color: var(--accent);
    font-size: 11px;
}

.experience-header h3 {
    font-size: 25px;
    margin-top: 8px;
}

.experience-header h4 {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.experience-type {
    align-self: flex-start;
    padding: 6px 10px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: "JetBrains Mono", monospace;
    font-size: 9px;
}

.company {
    margin-top: 20px;
    color: var(--text-primary);
    font-weight: 600;
}

.company span {
    color: var(--accent);
}

.location {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 20px;
}

.experience-list {
    display: grid;
    gap: 10px;
}

.experience-list li {
    position: relative;
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 13px;
}

.experience-list li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 25px;
}

.tag-list span,
.project-tags span,
.skill-items span {
    padding: 5px 9px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: "JetBrains Mono", monospace;
    font-size: 9px;
    transition: var(--transition);
}

.tag-list span:hover,
.project-tags span:hover,
.skill-items span:hover {
    border-color: var(--border-accent);
    color: var(--accent);
}


/* =========================================================
   09. SKILLS
   ========================================================= */

.skills {
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.skill-category {
    padding: 30px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--border-accent);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 22px;
}

.skill-number {
    font-family: "JetBrains Mono", monospace;
    color: var(--accent);
    font-size: 11px;
}

.skill-category h3 {
    font-size: 19px;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}


/* =========================================================
   10. PROJECTS
   ========================================================= */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.project-card {
    position: relative;
    padding: 30px;
    min-height: 290px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-5px);
}

.project-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 35px;
}

.project-number {
    font-family: "JetBrains Mono", monospace;
    color: var(--accent);
    font-size: 12px;
}

.project-type {
    font-family: "JetBrains Mono", monospace;
    color: var(--text-muted);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-card h3 {
    font-size: 23px;
    margin-bottom: 13px;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.7;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 25px;
}


/* =========================================================
   11. EDUCATION
   ========================================================= */

.education {
    background: var(--bg-secondary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.education-card {
    padding: 30px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.education-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.education-year {
    display: inline-block;
    font-family: "JetBrains Mono", monospace;
    color: var(--accent);
    font-size: 10px;
    margin-bottom: 18px;
}

.education-card h3 {
    font-size: 20px;
    line-height: 1.4;
    margin-bottom: 12px;
}

.institution {
    color: var(--text-secondary);
    font-size: 13px;
}

.education-result {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 25px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.education-result span {
    color: var(--text-muted);
    font-size: 11px;
}

.education-result strong {
    color: var(--text-primary);
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
}

.license-authority {
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 15px;
}


/* =========================================================
   12. EXPERTISE
   ========================================================= */

.expertise {
    padding-top: 20px;
}

.expertise-box {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 70px;
    padding: 60px;
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
}

.expertise-content h2 {
    max-width: 600px;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.15;
    margin: 12px 0 25px;
}

.expertise-content > p:last-child {
    max-width: 600px;
    color: var(--text-secondary);
}

.expertise-list {
    display: grid;
    align-content: center;
}

.expertise-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.expertise-item span {
    color: var(--accent);
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
}

.expertise-item strong {
    font-size: 14px;
}


/* =========================================================
   13. CONTACT
   ========================================================= */

.contact {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 0.8fr;
    gap: 100px;
}

.contact-intro .lead {
    color: var(--text-primary);
    font-size: 21px;
    max-width: 650px;
}

.contact-intro > p:not(.lead) {
    color: var(--text-muted);
    margin-top: 15px;
}

.contact-actions {
    margin-top: 40px;
    display: grid;
    gap: 10px;
    max-width: 500px;
}

.contact-button {
    display: flex;
    flex-direction: column;
    padding: 20px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    transition: var(--transition);
}

.contact-button:hover {
    border-color: var(--border-accent);
}

.contact-button span {
    color: var(--accent);
    font-family: "JetBrains Mono", monospace;
    font-size: 9px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.contact-button strong {
    margin-top: 5px;
    font-size: 14px;
}

.contact-details {
    border-left: 1px solid var(--border);
    padding-left: 45px;
}

.contact-detail {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.detail-label {
    color: var(--accent);
    font-family: "JetBrains Mono", monospace;
    font-size: 9px;
    letter-spacing: 1.5px;
}

.contact-detail p {
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 13px;
}


/* =========================================================
   14. FOOTER
   ========================================================= */

.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: 50px 0 25px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 35px;
}

.footer-brand p {
    margin-top: 12px;
    color: var(--text-muted);
    font-size: 11px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 11px;
    transition: var(--transition);
}

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

.footer-bottom {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding-top: 25px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 10px;
}


/* =========================================================
   15. BACK TO TOP
   ========================================================= */

.back-to-top {
    position: fixed;
    right: 25px;
    bottom: 25px;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border-accent);
    background: var(--bg-card);
    color: var(--accent);
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: var(--transition);
    z-index: 500;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent);
    color: #000;
}


/* =========================================================
   16. SCROLL REVEAL
   ========================================================= */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}


/* =========================================================
   17. RESPONSIVE - TABLET
   ========================================================= */

@media (max-width: 1000px) {

    .nav-menu {
        gap: 18px;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 70px;
    }

    .hero-content {
        max-width: 800px;
    }

    .hero-visual {
        justify-content: flex-start;
    }

    .profile-card {
        width: 330px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .expertise-box {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-grid {
        gap: 60px;
    }
}


/* =========================================================
   18. RESPONSIVE - MOBILE
   ========================================================= */

@media (max-width: 760px) {

    .container {
        width: min(100% - 30px, var(--container-width));
    }

    .section {
        padding: 80px 0;
    }

    .section-heading {
        gap: 15px;
        margin-bottom: 45px;
    }

    .section-heading h2 {
        font-size: 34px;
    }


    /* Navbar */

    .navbar {
        min-height: 70px;
    }

    .menu-toggle {
        display: flex;
        margin-left: auto;
    }

    .nav-cv {
        display: none;
    }

    .nav-menu {
        position: absolute;
        top: 70px;
        left: 15px;
        right: 15px;

        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;

        padding: 10px;

        background: rgba(13, 17, 24, 0.98);
        border: 1px solid var(--border);

        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);

        transition: var(--transition);
    }

    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-link {
        display: block;
        padding: 13px 15px;
    }

    .nav-link::after {
        display: none;
    }


    /* Hero */

    .hero {
        padding-top: 120px;
    }

    .hero h1 {
        font-size: clamp(45px, 13vw, 65px);
        letter-spacing: -3px;
    }

    .hero-description {
        font-size: 15px;
    }

    .hero-stats {
        gap: 25px;
        flex-wrap: wrap;
    }

    .stat strong {
        font-size: 20px;
    }

    .profile-card {
        width: 290px;
    }


    /* About */

    .about-highlights {
        grid-template-columns: 1fr;
    }


    /* Experience */

    .timeline-item {
        padding-left: 30px;
    }

    .timeline-content {
        padding: 22px;
    }

    .experience-header {
        flex-direction: column;
        gap: 10px;
    }

    .experience-header h3 {
        font-size: 21px;
    }


    /* Skills */

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


    /* Projects */

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


    /* Education */

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


    /* Expertise */

    .expertise-box {
        padding: 30px 25px;
    }


    /* Contact */

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 45px;
    }

    .contact-details {
        border-left: 0;
        border-top: 1px solid var(--border);
        padding-left: 0;
        padding-top: 20px;
    }


    /* Footer */

    .footer-content {
        grid-template-columns: 1fr;
    }

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

}


/* =========================================================
   19. SMALL MOBILE
   ========================================================= */

@media (max-width: 450px) {

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }

    .hero-stats {
        justify-content: space-between;
    }

    .stat span {
        font-size: 9px;
    }

    .section-heading h2 {
        font-size: 30px;
    }

    .project-card,
    .skill-category,
    .education-card {
        padding: 23px;
    }

    .expertise-content h2 {
        font-size: 30px;
    }

}