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

:root {
    --primary-color: #00A8FF; 
    --primary-hover: #007fbf;
    --bg-dark: #121212; 
    --bg-light: #f8f8fa;
    --bg-light-alt: #ffffff; 
    --text-primary-dark: #EAEAEA;
    --text-secondary-dark: #B0B0B0;
    --border-color-dark: #2e2e2e;
    --text-primary-light: #181818;
    --text-secondary-light: #444444;
    --border-color-light: #dddddd;

    --bg-current: var(--bg-light);
    --bg-alt-current: var(--bg-light-alt);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --border-color: var(--border-color-light);
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    line-height: 1.7;
    background-color: var(--bg-current); 
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
    opacity: 0;
    animation: fadeInBody 0.8s ease-in-out forwards;
    transition: background-color 0.5s ease-in-out, color 0.5s ease-in-out;
}

@keyframes fadeInBody {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

body.dark-theme {
    --bg-current: var(--bg-dark);
    --bg-alt-current: #1e1e1e;
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-color: var(--border-color-dark);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    background-color: rgba(30, 30, 30, 0.8);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: background-color 0.4s ease-in-out, border-color 0.4s ease-in-out;
}

body.dark-theme .site-header {
    background-color: rgba(255, 255, 255, 0.1);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    text-decoration: none;
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--primary-color);
    transition: color 0.3s ease-in-out;
}

.main-nav ul {
    list-style: none; margin: 0; padding: 0; display: flex; gap: 25px;
    transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 400;
    padding-bottom: 5px;
    position: relative;
    transition: color 0.3s ease-in-out, transform 0.3s ease-in-out;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease-in-out;
}

.main-nav a:hover, .main-nav a.active {
    color: var(--text-primary);
    transform: translateY(-2px);
}

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

.main-nav a:focus {
    outline: 2px solid var(--primary-color);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-primary);
    transition: transform 0.3s ease-in-out;
}

.menu-toggle:focus {
    outline: 2px solid var(--primary-color);
}

.menu-toggle.active {
    transform: rotate(90deg);
}

.theme-switch, .lang-switch {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.2rem;
    margin-left: 10px;
    transition: transform 0.3s ease-in-out, color 0.3s ease-in-out;
}

.theme-switch:hover, .lang-switch:hover {
    transform: scale(1.1);
    color: var(--primary-color);
}

.theme-switch:focus, .lang-switch:focus {
    outline: 2px solid var(--primary-color);
}

main {
    padding: 50px 0;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInMain 1s ease-in-out 0.2s forwards;
    transition: background-color 0.5s ease-in-out, color 0.5s ease-in-out;
}

@keyframes fadeInMain {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.2;
    transition: color 0.4s ease-in-out;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0;
    font-weight: 300;
    transition: color 0.4s ease-in-out;
}

.about-me > div {
    position: relative;
    display: inline-block;
    border-radius: 50%;
    overflow: visible;
    box-shadow: none;
    background: none;
}

.about-me {
    margin-top: 60px;
}
.about-me-text {
    margin-top: 20px;
}

.profile-pic {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(255,255,255,0.6);
    box-shadow: 0 0 18px rgba(0,0,0,0.2);
    transition: box-shadow 0.5s ease, transform 0.5s ease;
    position: relative;
    background: none;
    margin-bottom: 15px;
    z-index: 1;
}

/* Easter egg */
.particle {
    position: absolute;
    width: 50px;
    height: 50px;
    pointer-events: none;
    animation: particleFall 1.5s ease-out forwards;
    z-index: 10;
    font-weight: bold;
    text-align: center;
    line-height: 50px;
    opacity: 1;
    border-radius: 50%;
    color: white;
    box-shadow: 0 0 8px rgba(0,0,0,0.4);
    user-select: none;
}

@keyframes particleFall {
    0% {
        opacity: 1;
        transform: translate(0, 0) rotate(0deg) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(var(--tx), var(--ty)) rotate(var(--rot)) scale(0.6);
    }
}

.particle.color1 { background-color: #00A8FF; box-shadow: 0 0 12px #00A8FF; }
.particle.color2 { background-color: #FF6B6B; box-shadow: 0 0 12px #FF6B6B; }
.particle.color3 { background-color: #FFD93D; box-shadow: 0 0 12px #FFD93D; }
.particle.color4 { background-color: #6BCB77; box-shadow: 0 0 12px #6BCB77; }
.particle.color5 { background-color: #FF9F1C; box-shadow: 0 0 12px #FF9F1C; }
.particle.color6 { background-color: #9B5DE5; box-shadow: 0 0 12px #9B5DE5; }

.profile-pic:hover, .profile-pic:focus {
    box-shadow: 0 0 24px rgba(0,0,0,0.3);
    transform: scale(1.07);
    outline: none;
}

.halo {
    box-shadow: none !important;
    background: none !important;
    animation: none !important;
    display: none !important;
}

.about-me {
    margin-top: 60px;
    justify-content: center;
    align-items: center;
    gap: 40px;
}

.about-me > div {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    box-shadow: none;
    border-radius: 0;
    overflow: visible;
}

@keyframes haloPulse {
    0%, 100% {
        box-shadow: 0 0 18px var(--primary-color), 0 0 36px var(--primary-color);
    }
    50% {
        box-shadow: 0 0 30px var(--primary-color), 0 0 50px var(--primary-color);
    }
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.project-card {
    background: var(--bg-alt-current);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: transform 0.4s ease-in-out, box-shadow 0.4s ease-in-out, border-color 0.4s ease-in-out, background-color 0.4s ease-in-out;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    border-color: var(--primary-color);
}

.project-card:focus {
    outline: 2px solid var(--primary-color);
}

.project-github-btn {
    display: inline-block;
    margin: 35px auto 0 auto;
    background-color: var(--primary-color);
    color: white;
    padding: 16px 40px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1.2rem;
    text-align: center;
    text-decoration: none;
    box-shadow: 0 0 20px var(--primary-color);
    transition: background-color 0.3s, box-shadow 0.3s, transform 0.2s;
    animation: githubPulse 2.5s ease-in-out infinite;
    letter-spacing: 1px;
    outline: none;
}

.project-github-btn:hover, .project-github-btn:focus {
    background-color: var(--primary-hover);
    box-shadow: 0 0 40px var(--primary-color);
    transform: translateY(-5px) scale(1.07);
}

@keyframes githubPulse {
    0%, 100% { box-shadow: 0 0 20px var(--primary-color); }
    50% { box-shadow: 0 0 35px 7px var(--primary-color); }
}

.button {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 8px;
    margin-top: 20px;
    transition: background-color 0.3s ease-in-out, transform 0.3s ease-in-out;
    font-weight: 600;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.button:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05) translateY(-2px);
}

.button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300%;
    height: 300%;
    background: rgba(255,255,255,0.15);
    transition: all 0.75s ease-in-out;
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
}

.button:active::before {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
}

.contact-options {
    display: flex;
    gap: 20px;
    margin: 40px 0;
    flex-wrap: wrap;
    transition: opacity 0.5s ease-in-out;
}

.contact-button {
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 8px;
    color: var(--text-primary);
    font-weight: 600;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease-in-out;
}

.contact-button:hover {
    transform: translateY(-3px);
}

.telegram {
    border-color: #2AABEE;
    color: #2AABEE;
}

.telegram:hover {
    background-color: #2AABEE;
    color: #fff;
}

.whatsapp {
    border-color: #25D366;
    color: #25D366;
}

.whatsapp:hover {
    background-color: #25D366;
    color: #fff;
}

.phone {
    border-color: #B0B0B0;
    color: #B0B0B0;
}

.phone:hover {
    background-color: #B0B0B0;
    color: #fff;
}

.contact-form {
    background-color: var(--bg-alt-current);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin: 20px auto;
    transition: background-color 0.4s ease-in-out, border-color 0.4s ease-in-out, box-shadow 0.4s ease-in-out;
}

.contact-form:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 400;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    background-color: var(--bg-current);
    color: var(--text-primary);
    transition: border-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

.form-group input:focus, .form-group textarea:focus {
    outline: 2px solid var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 168, 255, 0.3);
}

.contact-form .button {
    width: 100%;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.form-loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.form-success, .form-error {
    display: none;
    margin-top: 10px;
    padding: 10px;
    border-radius: 5px;
    animation: fadeIn 0.5s ease-in-out;
}

.form-success { background: green; color: white; }
.form-error { background: red; color: white; }

.site-footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 50px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: color 0.4s ease-in-out, border-color 0.4s ease-in-out;
}

.section-divider {
    width: 100%;
    height: 50px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.3c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="var(--bg-light)"></path></svg>') no-repeat bottom;
    background-size: cover;
    transition: background 0.5s ease-in-out;
}

.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: none;
    transition: opacity 0.5s ease-in-out, transform 0.3s ease-in-out;
}

.back-to-top.show {
    display: block;
    transform: scale(1);
}

.back-to-top:hover {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .subtitle { font-size: 1.2rem; }
    .menu-toggle { display: block; }
    .main-nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--bg-alt-current);
        border-bottom: 1px solid var(--border-color);
        padding: 10px 0;
        z-index: 1000;
        opacity: 0;
        transform: translateY(-20px);
        transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out, background-color 0.4s ease-in-out; 
    }
    .main-nav ul.active {
        display: flex;
        opacity: 1;
        transform: translateY(0);
    }
    .main-nav li { width: 100%; text-align: center; }
    .main-nav a { padding: 15px; display: block; border: 0; }
    .main-nav a::after { display: none; }

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

.contact-email {
    display: block;
    text-align: center;
    margin-bottom: 25px;
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease-in-out, transform 0.3s ease-in-out;
}

.contact-email:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.contact-email i {
    margin-right: 10px;
    transition: transform 0.3s ease-in-out;
}

.contact-email:hover i {
    transform: rotate(10deg);
}

body:not(.dark-theme) .main-nav a {
    color: #222222; 
    font-weight: 700;
    padding: 10px 16px; 
    border-radius: 6px;
    background: transparent;
    transition: background-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
    text-shadow: none;
}

body:not(.dark-theme) .main-nav a:hover,
body:not(.dark-theme) .main-nav a.active {
    color: #007FCC; 
    background-color: rgba(0, 127, 204, 0.25);
    box-shadow: 0 4px 10px rgba(0,127,204,0.3);
}

body:not(.dark-theme) .main-nav a:not(.active):hover {
    background-color: rgba(0, 127, 204, 0.12);
    box-shadow: none;
    color: #007FCC;
}

body.dark-theme .main-nav a {
    color: #cccccc;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 6px;
    background: transparent;
    transition: background-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
    text-shadow: none;
}

body.dark-theme .main-nav a:hover,
body.dark-theme .main-nav a.active {
    color: #00a8ff;
    background-color: rgba(0, 168, 255, 0.35);
    box-shadow: 0 3px 8px rgba(0,168,255,0.5);
}

body.dark-theme .main-nav a:not(.active):hover {
    background-color: rgba(0, 168, 255, 0.18);
    box-shadow: none;
    color: #00a8ff;
}

body:not(.dark-theme) .site-header {
    background-color: rgba(255, 255, 255, 0.9); 
    border-bottom: 1px solid #dddddd; 
}

body:not(.dark-theme) .main-nav a {
    color: #111111; 
    font-weight: 600;
}

body:not(.dark-theme) .main-nav a:hover,
body:not(.dark-theme) .main-nav a.active {
    color: var(--primary-color);
    background-color: rgba(0, 168, 255, 0.1);
}