:root {
    --primary-color: #0066cc;
    --accent-color: #aee6ff;
    --bg-color: #e9f5ff;
    --text-light: #0a0a0a;
}

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


body {
    font-family: 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    overflow-x: hidden;
    color: var(--text-light);
    background-color: var(--bg-color);
    color: var(--text-light);
    transition: background 0.5s, color 0.5s;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: linear-gradient(to right, var(--accent-color), var(--primary-color));
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: background 0.4s ease, color 0.4s ease;
}

.logo {
    font-weight: bold;
    font-size: 1.3rem;
}

.burger {
    width: 28px;
    height: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
}

.burger div {
    height: 3px;
    background-color: var(--bg-color);
    border-radius: 2px;
    transition: 0.3s ease;
}

.sidebar {
    position: fixed;
    top: 0;
    left: -250px;
    width: 250px;
    height: 100vh;
    background: linear-gradient(to bottom, #004d99, #007bff);
    padding-top: 5rem;
    transition: left 0.3s ease;
    z-index: 20;
    box-shadow: 4px 0 10px rgba(0, 0, 0, 0.2);
}

.sidebar.active {
    left: 0;
}

.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar ul li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar ul li a {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    transition: background 0.3s ease;
}

.sidebar ul li a:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 15;
}

.overlay.active {
    opacity: 1;
    pointer-events: all;
}

.desktop-nav {
    display: none;
}

.active {
    color: #ffd700 !important;
}

@media (min-width: 768px) {
    .desktop-nav {
        display: block;
    }

    .burger,
    .sidebar,
    .overlay {
        display: none;
    }

    header {
        justify-content: space-between;
    }

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

    nav.desktop-nav ul li a {
        text-decoration: none;
        color: var(--text-light);
        font-weight: 500;
        transition: color 0.3s;
    }

    nav.desktop-nav ul li a:hover {
        color: #ffd700;
    }

}

/* ====== HOME SECTION ====== */
.home {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 90vh;
    text-align: left;
    padding: 2rem 10rem;
    flex-wrap: wrap;
    overflow: hidden;
    background: transparent;
    z-index: 0;
}

/* Particles background canvas */
#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 0;
    top: 0;
    left: 0;
    pointer-events: none;
}

#particles-js canvas {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
}

.home-content {
    flex: 1 1 350px;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    position: relative;
    z-index: 2;
}

.home-content h1 {
    font-size: 2rem;
    color: cyan;
    margin-bottom: 0.8rem;
    text-shadow: 0 0 15px cyan;
}

.typing {
    font-size: 1.2rem;
    color: #00ffff;
    display: inline-block;
    overflow: hidden;
    white-space: normal;
    word-break: break-word;
    max-width: 90vw;
    line-height: 1.5;
    min-height: 1.6em;
    z-index: 2;
    position: relative;
}

.home-image {
    flex: 0 0 220px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
}

.home-image img {
    width: 200px;
    max-width: 100%;
    border-radius: 50%;
    border: 4px solid cyan;
    box-shadow: 0 0 20px cyan;
}

@media (max-width: 768px) {
    .home {
        flex-direction: column;
        text-align: center;
        height: auto;
        padding: 3rem 1rem;
        gap: 1rem;
    }

    .home-content {
        align-items: center;
    }

    .home-content h1 {
        font-size: 1.6rem;
    }

    .home-image {
        margin-top: 1rem;
    }

    .home-image img {
        width: 160px;
    }
}

.home-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.profile-ring {
    position: relative;
    width: 210px;
    height: 210px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-ring .ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(from 0deg,
            #00c6ff,
            #007bff,
            #00ffcc,
            #00c6ff);
    animation: spin 5s linear infinite;
    z-index: 1;
}

.profile-ring img {
    position: relative;
    z-index: 2;
    width: 190px;
    height: 190px;
    border-radius: 50%;
    border: 4px solid #0a0f1d;
    object-fit: cover;
    background-color: #0a0f1d;
    box-shadow: 0 0 25px rgba(0, 238, 255, 0.3);
}

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

    100% {
        transform: rotate(360deg);
    }
}


.desktop-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.desktop-nav a {
    position: relative;
    text-decoration: none;
    color: inherit;
    padding-bottom: 4px;
    transition: color 0.3s ease;
}

.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: #00bcd4; 
    transition: width 0.3s ease;
}

.desktop-nav a:hover::after {
    width: 100%;
}

.desktop-nav a:hover {
    color: #00bcd4; 
}
/* ===== TOGGLE SWITCH (no icons) ===== */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

/* Hide checkbox */
.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

/* Background track */
.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.4s;
    border-radius: 34px;
}

/* Knob */
.slider::before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: 0.4s;
}

/* Checked state (dark mode on) */
input:checked+.slider {
    background-color: #007bff;
}

/* Move knob to right when checked */
input:checked+.slider::before {
    transform: translateX(24px);
}

/* Dark Mode styling */
body.dark-mode {
    --primary-color: #0066cc;
    --accent-color: #00c6ff;
    --bg-color: #0a0f1d;
    --text-light: #ffffff;

    background-color: var(--bg-color);
    color: var(--text-light);
    transition: background 0.5s, color 0.5s;
}

body.dark-mode header {
    background-color: #1e1e1e;
    color: black;
}

/* Sidebar dark */
body.dark-mode .sidebar {
    background-color: #1e1e1e;
    color: #00ffff;
}

/* Links glow a bit in dark mode */
body.dark-mode a {
    color: #00ffff;
}

body.dark-mode a:hover {
    color: #ffffff;
}

.theme-text {
    color: #003366;
    font-weight: 500;
    line-height: 1.6;
}

body.dark-mode .theme-text {
    color: #aefeff;
}

.theme-text2 {
    font-size: 2rem;
    color: #003366 !important;
    /* light mode default */
    font-weight: 600;
    line-height: 1.3;
    transition: color 0.5s;
}

/* Name span */
.name-text {
    color: #003366 !important;
}

/* Dark mode */
body.dark-mode .theme-text2 {
    color: #00ffff !important;
}

body.dark-mode .theme-text2 .name-text {
    color: #00c6ff !important;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .theme-text2 {
        font-size: 1.6rem;
        text-align: center;
    }
}


.theme-selector {
    display: flex;
    gap: 10px;
    align-items: center;
}

.theme-selector input[type="radio"] {
    accent-color: #00ffff;
    /* Makes the dot cyan */
}

.sidebar ul li.sidebar-theme {
    padding: 1rem 1.5rem;
}

#themeSelect {
    width: 100%;
    padding: 6px 10px;
    font-size: 1rem;
    border-radius: 6px;
    border: none;
    background-color: #f0f0f0;
    color: #000;
    cursor: pointer;
    outline: none;
}

body.dark-mode #themeSelect {
    background-color: #333;
    color: #fff;
}

/* ===== COMPACT SWITCH FOR MOBILE SIDEBAR ===== */
.sidebar ul li.sidebar-toggle .switch {
    width: 40px;
    /* mas maliit kaysa desktop */
    height: 20px;
}

.sidebar ul li.sidebar-toggle .slider::before {
    height: 16px;
    /* maliit na knob */
    width: 16px;
    left: 2px;
    bottom: 2px;
}

.sidebar ul li.sidebar-toggle input:checked+.slider::before {
    transform: translateX(20px);
    /* adjust knob movement */
}

.sidebar ul li.sidebar-toggle .slider {
    border-radius: 20px;
}

/* Optional: adjust sidebar spacing */
.sidebar ul li.sidebar-toggle {
    padding: 0.8rem 1.5rem;
}

.footer-content {
    background-color: var(--footer-bg, #111);
    color: var(--footer-text, #fff);
    padding: 15px 20px;
    font-size: 14px;
    margin-top: 6px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-left,
.footer-center,
.footer-right {
    margin: 5px 0;
}

.footer-center a,
.footer-right a {
    color: var(--footer-text, #fff);
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s;
}

.footer-center a:hover,
.footer-right a:hover {
    color: #00ffff;
}

/* Responsive for small screens */
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-center a,
    .footer-right a {
        margin: 5px;
    }
}

/* Theme Variables */
body.dark-mode {
    --footer-bg: #111;
    --footer-text: #fff;
}

body:not(.dark-mode) {
    --footer-bg: #f1f1f1;
    --footer-text: #003366;
}


button {
    cursor: pointer;
    font-size: 16px;
    width: 100px;
    padding: 5px;
    margin-top: 20px;
    border-radius: 5px;
    background-color: var(--primary-color);
    border: none;
    transition: .3s background ease-in-out;
}

button:hover {
    background: #003366;
    color: #00ffcc;
}

.theme-text3 {
    color: #003366 !important;
    text-shadow: 0 0 15px cyan;
}

body.dark-mode .theme-text3 {
    color: #00ffff !important;
}

body.dark-mode .paragraph-text {
    color: white !important;
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    text-align: center;
    padding: 4rem 2rem;
}

#about {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 4rem 2rem;
    text-align: center;
}

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

.about-content h1 {
    font-size: 2.5rem;
    color: #00ffff;
    margin-bottom: 2rem;
}

.about-content p {
    font-size: 1.1rem;
    color: #333;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}



.skills-content {
    text-align: center;
    padding: 60px 20px;
    background-color: transparent;
    color: var(--text-color, #fff);
}

.theme-text3 {
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #00ffff;
}

.skills-group-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
}

.skills-group {
    background: #0a0f1d;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px 25px;
    width: 420px;
    box-shadow: 0 6px 20px rgba(0, 255, 255, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skills-group:hover {
    transform: translateY(-6px);
    box-shadow: 0 6px 25px rgba(0, 255, 255, 0.3);
}

.skills-group h2 {
    color: #00ffff;
    font-size: 1.8rem;
    margin-bottom: 20px;
}

/* SKILL CARDS */
.skills-card-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.skills-card {
    display: flex;
    flex-direction: column;
    /* Image on top, text below */
    align-items: center;
    /* Centers horizontally */
    justify-content: center;
    /* Centers vertically */
    text-align: center;
    /* Centers text */
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 15px;
    width: 150px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skills-card:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.3);
}

.skills-card img {
    width: 60px;
    height: 60px;
    margin-bottom: 10px;
    display: block;
}

.skills-card h3 {
    font-size: 1rem;
    color: #00ffff;
}

@media (max-width: 768px) {
    .skills-group-container {
        flex-direction: column;
        align-items: center;
    }

    .skills-group {
        width: 90%;
    }

    .skills-card-container {
        justify-content: center;
        gap: 20px;
    }

    .skills-card {
        width: 45%;
    }

    .skills-card img {
        margin: 0 auto 10px auto;
    }
}

@media (max-width: 480px) {
    .skills-card {
        width: 80%;
    }
}

.certificates-content {
    text-align: center;
    padding: 60px 20px;
}

.certificates-content h1 {
    font-size: 2em;
    margin-bottom: 40px;
    color: var(--theme-color, #00ffff);
}

.certificates-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 25px;
}

.certificate-card {
    background: #1a1a1a;
    color: #fff;
    border-radius: 15px;
    width: 280px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.certificate-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 6px 20px rgba(0, 255, 255, 0.4);
}

.certificate-card img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 15px;
}

.certificate-card h3 {
    font-size: 1.1em;
    margin-bottom: 8px;
}

.certificate-card p {
    color: #ccc;
    font-size: 0.9em;
}

/* 📱 Responsive for mobile */
@media (max-width: 600px) {
    .certificates-grid {
        flex-direction: column;
        align-items: center;
    }

    .certificate-card {
        width: 85%;
        margin: 0 auto;
    }
}

.project-content {
    text-align: center;
    padding: 60px 20px;
    overflow: hidden;
}

.project-content h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: var(--accent-color, #00ffff);
}

/* --- Project slider container --- */
.project-slider {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    padding: 10px 10px 20px;
    scrollbar-width: none;
    /* remove justify-content:center; */
}

.project-slider::-webkit-scrollbar {
    display: none;
}

/* --- Each project card --- */
.project-card {
    flex: 0 0 85%;
    max-width: 400px;
    background: #ffffff;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    scroll-snap-align: center;
    overflow: hidden;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
}

/* --- Image inside card --- */
.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

/* --- Project info section --- */
.project-info {
    padding: 20px;
}

.project-info h3 {
    font-size: 1.2rem;
    color: var(--text-color, #222);
    margin-bottom: 10px;
}

.project-info p {
    font-size: 0.95rem;
    color: #555;
    line-height: 1.5;
}

/* --- Project links --- */
.project-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.project-links a {
    color: var(--accent-color, #00ffff);
    font-size: 1.3rem;
    transition: color 0.3s ease;
}

.project-links a:hover {
    color: #007bff;
}

/* --- Desktop: grid layout --- */
@media (min-width: 768px) {
    .project-slider {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        overflow: visible;
    }

    .project-card {
        flex: none;
        max-width: 100%;
    }
}

/* --- Mobile tweak --- */
@media (max-width: 480px) {
    .project-card {
        flex: 0 0 90%;
    }

    .project-content h1 {
        font-size: 2rem;
    }

    .project-info p {
        font-size: 0.9rem;
    }
}

.contact {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    padding: 40px 20px;
    scroll-margin-top: 100px;
    position: relative;
    overflow: hidden;
    height: 100%;
}

/* Container for info + form */
.contact-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
}

/* Title */
.contact-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #00ffff;
    margin-bottom: 20px;
}

/* Info Section */
.contact-info {
    text-align: center;
    color: #fff;
    max-width: 500px;
}

.contact-info h2 {
    font-size: 1.5rem;
    color: #00ffff;
    margin-bottom: 15px;
}

.contact-info p {
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 15px;
}

.contact-info2 {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    text-align: center;
    margin-top: 20px;
}

.info-item {
    margin-bottom: 20px;
    gap: 10px;
    font-size: 1rem;
    flex-wrap: wrap;
}

.info-item i {
    color: var(--accent-color, #00ffff);
    font-size: 1.3rem;
}

.info-item a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
    word-break: break-word;
}

.info-item a:hover {
    color: var(--accent-color, #00ffff);
}

/* ✅ Responsive: side-by-side on larger screens */
@media (min-width: 768px) {
    .contact-info {
        flex-direction: row;
        justify-content: center;
        text-align: left;
    }

    .info-item {
        justify-content: center;
    }
}


/* Form Section */
.contact-form {
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #00ffff;
    border-radius: 8px;
    background: transparent;
    color: #fff;
    font-size: 1rem;
    transition: 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: #00e6e6;
    box-shadow: 0 0 8px #00ffff;
    outline: none;
}

.contact-form button {
    background: #00ffff;
    color: #000;
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: 0.3s;
    width: 100%;
}

.contact-form button:hover {
    background: #00cccc;
    box-shadow: 0 0 10px #00ffff;
}

/* ----------- Responsive Fixes ----------- */

/* Tablets (768px ↑) */
@media (min-width: 768px) {
    .contact-container {
        flex-direction: column;
        gap: 60px;
    }

    .contact-form {
        width: 80%;
    }


}

/* Desktops (992px ↑) */
@media (min-width: 992px) {
    .contact-container {
        flex-direction: row;
        align-items: flex-start;
        justify-content: center;
        text-align: left;
        gap: 80px;
    }

    .contact-info,
    .contact-form {
        flex: 1;
    }

    .contact-info {
        text-align: left;
        display: flex;
        flex-direction: column;
        justify-content: center;
        padding-left: 20px;
    }

    .contact-form {
        max-width: 450px;
    }
}

/* Extra Large Screens */
@media (min-width: 1200px) {
    .contact-container {
        gap: 100px;
    }
}


body.dark-mode .contact-info h2 {
    color: #fff !important;
}

body.dark-mode .contact-info p {
    color: #ccc !important;
}

/* === PAGE LOAD ANIMATION === */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Default: hide all sections before load */
.home,
.contact,
.about-content,
.skills-content,
.certificates-content,
.project-content,
.footer-content {
    opacity: 0;
    transform: translateY(40px);
}

/* Apply animation on first load */
body.loaded .home,
body.loaded .contact,
body.loaded .about-content,
body.loaded .skills-content,
body.loaded .certificates-content,
body.loaded .project-content,
body.loaded .footer-content {
    animation: fadeInUp 1s ease-out forwards;
}

/* Optional: appear in sequence */
body.loaded .home {
    animation-delay: 0.1s;
}

body.loaded .about-content {
    animation-delay: 0.2s;
}

body.loaded .skills-content {
    animation-delay: 0.3s;
}

body.loaded .certificates-content {
    animation-delay: 0.35s;
}

body.loaded .project-content {
    animation-delay: 0.4s;
}

body.loaded .contact {
    animation-delay: 0.5s;
}

body.loaded .footer-content {
    animation-delay: 0.6s;
}