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

/* ===== GLOBAL ===== */
body {
    background: #000000; /* TRUE BLACK */
    color: #e5e7eb;
}

/* ===== NAVBAR ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: rgba(0, 0, 0, 0.85); /* premium glass black */
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 60px;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

header:hover {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 8px 30px rgba(56, 189, 248, 0.10);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
}

.logo span {
    color: #38bdf8;
}

.cert-title span {
     color: #38bdf8;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav ul li a {
    text-decoration: none;
    color: #e5e7eb;
    font-weight: 500;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0%;
    height: 2px;
    background: #38bdf8;
    left: 0;
    bottom: -6px;
    transition: 0.3s;
}

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

/* ===== SECTIONS ===== */
section {
    min-height: 100vh;
    padding: 120px 80px;
    background: #000000;
}

/* ===== HOME ===== */
.home {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.home-text h1 {
    font-size: 3rem;
    color: #ffffff;
}

.home-text h1 span {
    color: #38bdf8;
}

.home-text h3 {
    margin: 15px 0;
    font-weight: 400;
    color: white;
}

.home-text p {
    max-width: 500px;
    line-height: 1.7;
    margin-bottom: 30px;
    color: #9ca3af;
}

/* ===== SMOOTH TYPING CURSOR ===== */
.typing-name {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 2px solid #e5e7eb;
    width: 0;

    animation:
        typingName 2s steps(22, end) forwards,
        cursorBlink 1s ease-in-out infinite;
}

/* typing effect */
@keyframes typingName {
    from { width: 0; }
    to { width: 12.7ch; }
}

/* smooth blinking cursor */
@keyframes cursorBlink {
    0% { border-color: rgba(229,231,235,1); }
    50% { border-color: rgba(229,231,235,0); }
    100% { border-color: rgba(229,231,235,1); }
}

/* typing width control */
@keyframes typingName {
    from { width: 0; }
    to { width: 12.7ch; } /* precise width to end after Debashis */
}

/* smoother blinking cursor */
@keyframes smoothBlink {
    0%, 100% { border-color: rgba(229,231,235,0.9); }
    50% { border-color: rgba(229,231,235,0); }
}

/* ===== SOCIAL ICONS ===== */
.socials {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.socials a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: #0a0a0a;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #38bdf8;
    font-size: 1.2rem;
    transition: 0.3s;
    border: 2px solid rgba(255,255,255,0.08);
    text-decoration: none;
}

.socials a:hover {
    background: #38bdf8;
    color: #000000;
    transform: translateY(-6px);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.6);
}

/* ===== BUTTON ===== */
.btn {
    display: inline-block;
    padding: 12px 32px;
    background: #38bdf8;
    color: #000000;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
}

.btn:hover {
    box-shadow: 0 0 35px rgba(56, 189, 248, 0.8);
}

/* ===== COMMON SECTIONS ===== */
.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #38bdf8;
}

.section-text {
    max-width: 800px;
    line-height: 1.8;
    color: #9ca3af;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #38bdf8;
}

@media (max-width: 900px) {

    nav ul {
        position: absolute;
        top: 70px;
        right: 0;
        width: 220px;
        height: 100vh;
        background: #000;
        flex-direction: column;
        align-items: center;
        padding-top: 40px;
        transform: translateX(100%);
        transition: 0.4s ease;
    }

    nav ul.active {
        transform: translateX(0);
    }

    .menu-toggle {
        display: block;
    }
}

/* ===== FOOTER ===== */
footer {
    text-align: center;
    padding: 20px;
    background: #000000;
    color: #64748b;
    border-top: 1px solid rgba(255,255,255,0.08);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .home {
        flex-direction: column;
        text-align: center;
    }

    header {
        padding: 0 30px;
    }

    section {
        padding: 120px 40px;
    }
}

/* ===== CIRCLE CARD ===== */
.home-circle {
    display: flex;
    align-items: center;
    justify-content: center;
}

.circle-card {
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(
        circle at top,
        rgba(56, 189, 248, 0.25),
        rgba(0, 0, 0, 0.9)
    );
    border: 4px solid #38bdf8;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.6rem;
    font-weight: 600;
    text-align: center;
    gap: 6px;
    box-shadow:
        0 0 40px rgba(56, 189, 248, 0.25),
        inset 0 0 30px rgba(56, 189, 248, 0.15);
    transition: 0.4s ease;
    animation: floatOscillate 6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.circle-card:hover {
    animation-play-state: paused;
}

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

.circle-card span:last-child {
    color: #38bdf8;
}

/* ===== HOVER EFFECT ===== */
.circle-card:hover {
    transform: scale(1.08); /* ZOOM IN */
    box-shadow:
        0 0 60px rgba(56, 189, 248, 0.6),
        inset 0 0 35px rgba(56, 189, 248, 0.25);
}

@media (max-width: 900px) {

    .home {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .home-text {
        order: 2;
    }

    .home-circle {
        order: 1;
        margin-top: 30px;
    }

    .circle-card {
        width: 220px;
        height: 220px;
    }

    section {
        padding: 100px 25px;
    }
}

/* ===== ABOUT LAYOUT ===== */
.about-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

/* ===== RECTANGULAR CARD (ABOUT) ===== */
.about-card {
    width: 260px;
    height: 330px;
    border-radius: 22px;
    overflow: hidden;

    background: radial-gradient(
        circle at top,
        rgba(56, 189, 248, 0.25),
        rgba(0, 0, 0, 0.9)
    );

    border: 2px solid #38bdf8;

    box-shadow:
        0 0 40px rgba(56, 189, 248, 0.25),
        inset 0 0 25px rgba(56, 189, 248, 0.15);

    transition: 0.4s ease;

    position: relative;
    top: 50px;
}

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

.about-card span:last-child {
    color: #38bdf8;
}

/* ===== HOVER EFFECT ===== */
.about-card:hover {
    transform: scale(1.05);
    box-shadow:
        0 0 60px rgba(56, 189, 248, 0.6),
        inset 0 0 30px rgba(56, 189, 248, 0.25);
}

@media (max-width: 900px) {

    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .about-card {
        width: 200px;
        height: 260px;
        margin-top: 30px;
    }
}

@media (max-width: 900px) {
    .about-card {
        left: 0;
        top: 0;
    }
}

/* ===== SMOOTH OSCILLATION ANIMATION ===== */
@keyframes floatOscillate {
    0% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-14px) scale(1.02);
    }
    100% {
        transform: translateY(0) scale(1);
    }
}

.btn:active {
    transform: scale(0.96);
}

/* ===== CERTIFICATES SECTION ===== */

.certificates {
    margin-top: 50px;
}

.cert-title {
    color: white;
    margin: 30px 0 15px;
    font-size: 1.3rem;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 20px;
}

.cert-box {
    height: 110px;
    border-radius: 14px;
    background: radial-gradient(
        circle at top,
        rgba(56, 189, 248, 0.18),
        rgba(0, 0, 0, 0.95)
    );
    border: 1px solid rgba(56, 189, 248, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 10px;
    font-size: 0.9rem;
    color: #e5e7eb;
    transition: 0.35s ease;
}

/* Hover Glow */
.cert-box:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow:
        0 0 25px rgba(56, 189, 248, 0.5),
        inset 0 0 15px rgba(56, 189, 248, 0.15);
}

/* badge positioning */
.cert-box {
    position: relative;
}

/* completed badge */
.cert-badge {
    position: absolute;    
    top: 8px;
    right: 8px;
    background: #38bdf8;
    color: #000;
    font-size: 0.65rem;
    padding: 3px 8px;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
}

/* ===== PROJECTS SECTION ===== */

.projects-grid {
    margin-top: 50px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.project-card {
    padding: 30px;
    border-radius: 20px;
    background: radial-gradient(
        circle at top,
        rgba(56, 189, 248, 0.18),
        rgba(0, 0, 0, 0.95)
    );
    border: 1px solid rgba(56, 189, 248, 0.35);
    transition: 0.4s ease;
    box-shadow:
        0 0 25px rgba(56, 189, 248, 0.15),
        inset 0 0 15px rgba(56, 189, 248, 0.08);
}

.project-card h3 {
    color: #38bdf8;
    margin-bottom: 15px;
}

.project-card p {
    color: #9ca3af;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow:
        0 0 45px rgba(56, 189, 248, 0.6),
        inset 0 0 20px rgba(56, 189, 248, 0.15);
}

/* Project Button */
.project-btn {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 20px;
    background: #38bdf8;
    color: #000;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    transition: 0.3s ease;
}

.project-btn:hover {
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.8);
}

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

.contact-wrapper {
    margin-top: 50px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

/* ===== LET'S TALK BOX ===== */

.talk-box {
    padding: 35px;
    border-radius: 22px;
    background: radial-gradient(
        circle at top,
        rgba(56, 189, 248, 0.18),
        rgba(0, 0, 0, 0.95)
    );
    border: 1px solid rgba(56, 189, 248, 0.35);
    box-shadow:
        0 0 25px rgba(56, 189, 248, 0.15),
        inset 0 0 15px rgba(56, 189, 248, 0.08);
}

.talk-box h3 {
    color: #38bdf8;
    margin-bottom: 15px;
}

.talk-box p {
    color: #9ca3af;
    line-height: 1.6;
}

.talk-details {
    margin-top: 20px;
}

.talk-details p {
    margin-top: 8px;
    font-size: 0.9rem;
}

/* Email Button */

.email-btn {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 22px;
    border-radius: 25px;
    background: #38bdf8;
    color: #000;
    font-weight: 600;
    text-decoration: none;
    transition: 0.3s ease;
}

.email-btn:hover {
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.8);
}

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

.contact-form {
    padding: 35px;
    border-radius: 22px;
    background: #050505;
    border: 1px solid rgba(56, 189, 248, 0.25);
}

.contact-form h3 {
    color: #38bdf8;
    margin-bottom: 20px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 15px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.08);
    background: #000;
    color: #e5e7eb;
    font-size: 0.9rem;
    outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: #38bdf8;
}

/* Send Button */

.send-btn {
    width: 100%;
    padding: 12px;
    border-radius: 25px;
    border: none;
    background: #38bdf8;
    color: #000;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s ease;
}

.send-btn:hover {
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.8);
}

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

@media (max-width: 900px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .talk-box,
    .contact-form {
        padding: 25px;
    }
}

/* view button badge */
.project-demo {
    display: inline-block;
    margin-top: 10px;
    padding: 8px 18px;
    border-radius: 20px;
    border: 1px solid rgba(56,189,248,0.6);
    color: #38bdf8;
    font-size: 0.85rem;
    text-decoration: none;
    transition: 0.3s ease;
}

.project-demo:hover {
    background: #38bdf8;
    color: #000;
    box-shadow: 0 0 15px rgba(56,189,248,0.8);
}

/* ===== UNIVERSAL BUTTON ROW ===== */
.project-card a,
.cert-box a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 12px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

/* ===== SMALL CERTIFICATE BUTTON (FINAL FIX) ===== */
.cert-box .cert-btn {
    position: absolute;
    bottom: 6px;
    right: 6px;

    padding: 7px 11px !important;
    font-size: 0.6rem !important;
    border-radius: 15px !important;
    gap: 3px !important;

    border: 1px solid rgba(56,189,248,0.6);
    color: #38bdf8;
    background: transparent;
    text-decoration: none;
    transition: 0.2s ease;
}

.cert-box .cert-btn i {
    font-size: 0.6rem !important;
}

.cert-box .cert-btn:hover {
    background: #38bdf8;
    color: #000;
}

/* ===== LIVE DEMO BUTTON ===== */
/* ===== LIVE DEMO BUTTON (NO COLOR) ===== */
.demo-btn {
    border: 1px solid #38bdf8;
    color: #38bdf8;
    background: transparent;   /* ✅ removed blue */
}

.demo-btn:hover {
    background: #38bdf8;
    color: #000;
    transform: translateY(-3px);
    box-shadow: 0 0 20px rgba(56,189,248,0.8);
}

/* ===== PROFESSIONAL SKILL BADGES ===== */
.skills-badges {
    margin-top: 25px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.skills-badges span {
    padding: 8px 18px;
    border-radius: 30px;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.3px;

    color: #38bdf8;
    background: rgba(56,189,248,0.08);
    border: 1px solid rgba(56,189,248,0.35);

    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);

    transition: all 0.25s ease;
}

/* subtle hover animation */
.skills-badges span:hover {
    background: rgba(56,189,248,0.18);
    border-color: #38bdf8;
    transform: translateY(-2px);
    box-shadow: 0 0 12px rgba(56,189,248,0.35);
}

/* ===== ROLE TEXT CURSOR ===== */
.changing-text {
    color: white;
    border-right: 2px solid #38bdf8;
    padding-right: 4px;
    animation: blinkCursor 1s infinite;
}

@keyframes blinkCursor {
    0%,100% { border-color: #38bdf8; }
    50% { border-color: transparent; }
}

/* ===== BLUISH TRANSPARENT RESUME BUTTON ===== */
.resume-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;

    padding: 11px 24px;
    border-radius: 30px;

    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.4px;

    color: #38bdf8;
    background: rgba(56, 189, 248, 0.12);
    border: 1.5px solid rgba(56, 189, 248, 0.6);

    backdrop-filter: blur(6px);
    text-decoration: none;
    transition: all 0.3s ease;
}

/* icon */
.resume-btn i {
    font-size: 0.85rem;
    transition: transform 0.3s ease;
}

/* hover */
.resume-btn:hover {
    background: rgba(56, 189, 248, 0.25);
    border-color: #38bdf8;
    box-shadow: 0 0 20px rgba(56,189,248,0.6);
    transform: translateY(-3px);
    color: #7dd3fc;
}

/* icon animation */
.resume-btn:hover i {
    transform: translateY(2px);
}

/* click */
.resume-btn:active {
    transform: scale(0.96);
}

/* ===== PROFESSIONAL HIRE ME BUTTON ===== */
.hire-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;

    margin-top: 20px;
    padding: 10px 26px;
    border: 4px solid  rgba(255,255,255,0.08);
    border-radius: 28px;

    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;

    color: #000;
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    text-decoration: none;

    box-shadow: 0 8px 22px rgba(56,189,248,0.35);
    transition: all 0.3s ease;
}

/* icon */
.hire-btn i {
    font-size: 0.85rem;
    transition: transform 0.3s ease;
}

/* hover */
.hire-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(56,189,248,0.55);
}

/* icon animation */
.hire-btn:hover i {
    transform: translateX(4px);
}

/* click */
.hire-btn:active {
    transform: scale(0.96);
}

@media (max-width: 500px) {

    .home-text h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .project-card {
        padding: 20px;
    }
}

/* ===== INTRO TEXT ANIMATION ===== */
.homeintro-text {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUpText 1.5s ease forwards;
    animation-delay: 1s; /* delay after page load */
}

@keyframes fadeUpText {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== EDUCATION ROADMAP (ROW STYLE) ===== */

.roadmap {
    margin-top: 30px;
}

.roadmap-title {
    color: #38bdf8;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

/* ROW LAYOUT */
.roadmap-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

/* CARD STYLE */
.roadmap-item {
    position: relative;
    z-index: 1;
    flex: 1;

    /* ✅ FIX: make it opaque */
    background: #050505;   /* solid dark */
    border: 1px solid rgba(56, 189, 248, 0.35);
    border-radius: 16px;
    padding: 18px;
}

/* REMOVE OLD LINE + DOT */
.roadmap-dot {
    display: none;
}

/* TEXT STYLING */
.roadmap-item h4 {
    font-size: 0.9rem;
    color: #38bdf8;
    margin-bottom: 6px;
}

.roadmap-item p {
    font-size: 0.85rem;
    color: #9ca3af;
    line-height: 1.5;
}

/* HOVER EFFECT */
.roadmap-item:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow:
        0 0 25px rgba(56, 189, 248, 0.5),
        inset 0 0 15px rgba(56, 189, 248, 0.15);
}

/* ===== SIMPLE MIDDLE CONNECT LINE ===== */

.roadmap-items {
    position: relative;
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

/* 🔹 CENTER LINE */
.roadmap-items::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 5%;
    width: 90%;
    height: 2px;
    background: rgba(56,189,248,0.4);
    transform: translateY(-50%);
    z-index: 0;
}

/* 🔹 CARD */
.roadmap-item {
    position: relative;
    z-index: 1;
    flex: 1;
}

/* ===== EDUCATION RESPONSIVE FIX ===== */

/* Tablet */
@media (max-width: 900px) {

    .roadmap-items {
        flex-direction: column;   /* stack vertically */
        align-items: center;
        gap: 25px;
    }

    /* remove center line */
    .roadmap-items::before {
        display: none;
    }

    .roadmap-item {
        width: 100%;
        max-width: 400px;
        text-align: center;
    }
}

/* Mobile */
@media (max-width: 500px) {

    .roadmap-item {
        padding: 15px;
        border-radius: 14px;
    }

    .roadmap-item h4 {
        font-size: 0.85rem;
    }

    .roadmap-item p {
        font-size: 0.8rem;
    }
}