:root {
    /* THEME COLORS */
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --heading-color: #ffffff;
    --text-color: #e0e0e0;
    --primary-color: #0d6efd; 
    --border-color: #333;

    /* MASTER ANIMATION CURVE (easeInOutQuad) */
    --easing-curve: cubic-bezier(0.45, 0, 0.55, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 20px;
    scrollbar-color: #444 var(--bg-color);
    scrollbar-width: thin;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Poppins', sans-serif;
    margin: 0;
    line-height: 1.6;
    transition: background-color 0.4s var(--easing-curve), color 0.4s var(--easing-curve);
}

body.light-theme {
    --bg-color: #f0f2f5;
    --surface-color: #ffffff;
    --heading-color: #1c1c1c;
    --text-color: #333333;
    --border-color: #dddddd;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-color); }
::-webkit-scrollbar-thumb { background: #444; border-radius: 10px; border: 2px solid var(--bg-color); }
body.light-theme::-webkit-scrollbar-thumb { background: #ccc; border-color: var(--bg-color); }
::-webkit-scrollbar-thumb:hover { background: #555; }
body.light-theme::-webkit-scrollbar-thumb:hover { background: #bbb; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* --- Preloader & Loader --- */
#preloader { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 9999; background-color: var(--bg-color); display: flex; justify-content: center; align-items: center; transition: opacity 0.5s var(--easing-curve), visibility 0.5s var(--easing-curve); }
#preloader.hidden { opacity: 0; visibility: hidden; }
.loader { height: 30px; aspect-ratio: 2.5; --_g: no-repeat radial-gradient(farthest-side,var(--primary-color) 90%,#0000); background: var(--_g), var(--_g), var(--_g), var(--_g); background-size: 20% 50%; animation: l44 1s infinite linear alternate; }
@keyframes l44 { 0%,5% {background-position: calc(0*100%/3) 50% ,calc(1*100%/3) 50% ,calc(2*100%/3) 50% ,calc(3*100%/3) 50% } 12.5% {background-position: calc(0*100%/3) 0   ,calc(1*100%/3) 50% ,calc(2*100%/3) 50% ,calc(3*100%/3) 50% } 25% {background-position: calc(0*100%/3) 0   ,calc(1*100%/3) 0   ,calc(2*100%/3) 50% ,calc(3*100%/3) 50% } 37.5% {background-position: calc(0*100%/3) 100%,calc(1*100%/3) 0   ,calc(2*100%/3) 0   ,calc(3*100%/3) 50% } 50% {background-position: calc(0*100%/3) 100%,calc(1*100%/3) 100%,calc(2*100%/3) 0   ,calc(3*100%/3) 0   } 62.5% {background-position: calc(0*100%/3) 50% ,calc(1*100%/3) 100%,calc(2*100%/3) 100%,calc(3*100%/3) 0   } 75% {background-position: calc(0*100%/3) 50% ,calc(1*100%/3) 50% ,calc(2*100%/3) 100%,calc(3*100%/3) 100%} 87.5% {background-position: calc(0*100%/3) 50% ,calc(1*100%/3) 50% ,calc(2*100%/3) 50% ,calc(3*100%/3) 100%} 95%,100% {background-position: calc(0*100%/3) 50% ,calc(1*100%/3) 50% ,calc(2*100%/3) 50% ,calc(3*100%/3) 50% } }

/* --- Hero Section --- */
.hero { 
    background: #212121; 
    text-align: center; 
    padding: 60px 0; 
    position: relative; 
    transition: background-color 0.4s var(--easing-curve); 
    overflow: hidden; 
    display: flex;
    align-items: center;
    min-height: 80vh;
}
body.light-theme .hero { background: #d8dde3; }

.hero-content { position: relative; z-index: 2; width: 100%; }
.header-controls { position: absolute; top: 20px; right: 20px; z-index: 3; }

.hero-glass-panel {
    background: rgba(30, 30, 30, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 60px 40px;
    max-width: 900px;
    margin: 0 auto;
    transition: background 0.4s var(--easing-curve), border 0.4s var(--easing-curve);
}

body.light-theme .hero-glass-panel {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.hero-title { margin: 0 0 15px 0; }
.hero-subtitle { font-size: 1.4rem; max-width: 700px; margin: 0 auto 40px auto; opacity: 0.9; line-height: 1.5; color: var(--text-color); min-height: 42px; }
.hero-buttons { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.cta-button, .cta-button-secondary { display: inline-block; padding: 15px 30px; border-radius: 50px; text-decoration: none; font-weight: 600; transition: all 0.4s var(--easing-curve); }
.cta-button { background-color: var(--primary-color); color: white; }
.cta-button-secondary { background-color: transparent; border: 2px solid var(--primary-color); color: var(--primary-color); padding: 13px 30px; }
.cta-button:hover, .cta-button-secondary:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); }
.cta-button-secondary:hover { background-color: var(--primary-color); color: white; }

/* === Sun/Moon Switch CSS === */
.toggle-switch { position: relative; width: 75px; display: inline-block; text-align: left; top: 8px; }
.checkbox { display: none; }
.switch-label { display: block; overflow: hidden; cursor: pointer; border: 0 solid #bbb; border-radius: 20px; margin: 0; }
.slider { display: block; width: 200%; margin-left: -100%; transition: margin 0.3s ease-in 0s; }
.slider:before, .slider:after { display: block; float: left; width: 50%; height: 34px; padding: 0; line-height: 34px; font-size: 14px; color: white; font-weight: bold; box-sizing: border-box; }
.slider:before { content: ""; padding-left: 10px; background-color: #28292C; color: #FFFFFF; }
.slider:after { content: ""; padding-right: 10px; background-color: #F8F8F8; color: #444; text-align: right; }
.checkbox:checked + .switch-label .slider { margin-left: 0; }
.switch-label .slider .slider-thumb { position: absolute; top: 4px; left: 4px; width: 26px; height: 26px; background: #FFF; border-radius: 50%; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); transition: all 0.3s ease-in-out; }
.checkbox:checked + .switch-label .slider-thumb { left: 45px; background-color: #F8C300; }
.slider-thumb::before { content: ' '; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 12px; height: 12px; background-color: #28292C; border-radius: 50%; transition: all 0.3s ease-in-out; }
.checkbox:checked + .switch-label .slider-thumb::before { background-color: #F8F8F8; box-shadow: 0 0 10px rgba(248, 195, 0, 0.8); }
.slider-thumb::after { content: ' '; position: absolute; top: 3px; left: 8px; width: 12px; height: 12px; background-color: #FFF; border-radius: 50%; opacity: 1; transition: all 0.3s ease-in-out; }
.checkbox:checked + .switch-label .slider-thumb::after { opacity: 0; }

/* --- Actions Section --- */
.actions { padding: 30px 0; background-color: var(--bg-color); border-bottom: 1px solid var(--border-color); }
.actions-container { display: flex; justify-content: center; align-items: center; gap: 20px; flex-wrap: wrap; }

/* --- General Section Styling --- */
section { padding: 90px 0; transition: background-color 0.4s var(--easing-curve); }
.section-title { text-align: center; font-size: 2.5rem; color: var(--heading-color); margin-bottom: 60px; max-width: 800px; margin-left: auto; margin-right: auto; }

/* --- Glowing Card System (GLOBAL) --- */
.glow-card { background-image: linear-gradient(163deg, #00ff75 0%, #3700ff 100%); border-radius: 22px; transition: all .3s var(--easing-curve); height: 100%; }
.glow-card:hover { box-shadow: 0px 0px 30px 1px rgba(0, 255, 117, 0.30); transform: scale(1.02); }
.glow-card:hover > * { transform: scale(0.98); }

/* --- Advantage Section --- */
.advantage { background-color: var(--surface-color); }
.advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.advantage-card { background-color: var(--bg-color); border-radius: 20px; transition: all .2s var(--easing-curve); text-align: center; padding: 35px; height: 100%; box-sizing: border-box; }
.card-content { opacity: 1; transition: opacity 0.4s var(--easing-curve); }
.card-content.fading { opacity: 0; }
.advantage-card svg { stroke: var(--primary-color); margin-bottom: 15px; }
.advantage-card h4 { color: var(--heading-color); font-size: 1.4rem; margin-top: 0; margin-bottom: 10px; line-height: 1.3; }
.advantage-card p { font-size: 1rem; line-height: 1.7; color: var(--text-color); }

.visual { text-align: center; }
.screenshot { max-width: 90%; border-radius: 10px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5); border: 2px solid var(--border-color); }

/* --- Roadmap Section --- */
.roadmap { background-color: var(--surface-color); }
.roadmap-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.roadmap-item { background-color: var(--bg-color); border-radius: 20px; padding: 35px; height: 100%; box-sizing: border-box; transition: transform .2s var(--easing-curve); }
.roadmap-item h4 { margin-top: 0; color: var(--heading-color); font-size: 1.2rem; }
.roadmap-item p { margin-bottom: 0; }

/* --- About Us Section --- */
.about-us { background-color: #1a1a1a; }
body.light-theme .about-us { background: #e9ecef; }
.profiles-grid { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.profile-card { background-color: var(--surface-color); border-radius: 20px; padding: 30px; text-align: center; max-width: 320px; width: 100%; height: 100%; box-sizing: border-box; transition: transform .2s var(--easing-curve); }
.profile-pic { width: 120px; height: 120px; border-radius: 50%; border: 3px solid var(--primary-color); object-fit: cover; margin-bottom: 20px; }
.profile-card h4 { color: var(--heading-color); font-size: 1.4rem; margin-top: 0; margin-bottom: 5px; }
.profile-role { color: var(--primary-color); font-weight: 600; margin-top: 0; margin-bottom: 15px; }
.profile-bio { font-size: 0.95rem; color: var(--text-color); opacity: 0.9; }
.profile-links { display: flex; justify-content: center; gap: 25px; margin-top: 20px; }
.profile-links svg { width: 28px; height: 28px; fill: #888; transition: fill 0.2s ease, transform 0.2s ease; }
.profile-links a:hover svg { transform: scale(1.1); }
.profile-links a[title="GitHub"] svg { fill: #c9d1d9; }
.profile-links a[title="GitHub"]:hover svg { fill: #ffffff; }
body.light-theme .profile-links a[title="GitHub"] svg { fill: #24292f; }
body.light-theme .profile-links a[title="GitHub"]:hover svg { fill: #000000; }
.profile-links a[title="LinkedIn"]:hover svg { fill: #0077B5; }
.profile-links a[title="YouTube"]:hover svg { fill: #FF0000; }

footer { text-align: center; padding: 40px 0; border-top: 1px solid var(--border-color); color: #888; }
.footer-contact { margin-top: 10px; font-size: 0.9rem; }
.footer-contact a { color: var(--primary-color); text-decoration: none; font-weight: 600; }
.footer-contact a:hover { text-decoration: underline; }
.footer-socials { margin-top: 20px; }

.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s var(--easing-curve), transform 0.6s var(--easing-curve); }
.fade-in.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 992px) {
    .advantage-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
}

@media (max-width: 768px) { 
    .header-controls { top: 15px; right: 15px; } 
    .hero { min-height: 70vh; padding: 60px 0; } 
    .hero-glass-panel { padding: 30px 20px; }
    .gradient-text { font-size: clamp(3rem, 15vw, 5rem); }
    .hero-subtitle { font-size: 1.2rem; min-height: 58px; } 
    section { padding: 60px 0; } 
    .section-title { font-size: 2rem; margin-bottom: 40px; } 
    .roadmap-grid, .profiles-grid { flex-direction: column; align-items: center; }
    .roadmap-grid .glow-card, .profiles-grid .glow-card { width: 100%; max-width: 500px;}
}

/* === START: NEW/FIXED STYLES === */
.typewriter { font-weight: 600; color: var(--heading-color); }
.typewriter::after { content: '|'; animation: blink 1s step-end infinite; color: var(--primary-color); margin-left: 4px; }
@keyframes blink { from, to { opacity: 1; } 50% { opacity: 0; } }

.cta-button-secondary.with-icon { display: inline-flex; align-items: center; gap: 10px; }
.cta-button-secondary.with-icon svg { width: 24px; height: 24px; }

.sticky-nav { position: sticky; top: 0; z-index: 1000; background-color: var(--surface-color); border-bottom: 1px solid var(--border-color); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2); padding: 5px 0; transition: background-color 0.4s var(--easing-curve); }
.creative-menu { display: flex; justify-content: center; align-items: center; margin: 0; padding: 0; }
.creative-menu li { list-style: none; }
.creative-menu li a { position: relative; display: block; text-transform: uppercase; margin: 0 15px; padding: 15px 20px; text-decoration: none; color: var(--text-color); font-family: 'Poppins', sans-serif; font-size: 1rem; font-weight: 600; transition: .5s; z-index: 1; }
.creative-menu li a:before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; border-top: 2px solid var(--primary-color); border-bottom: 2px solid var(--primary-color); transform: scaleY(2); opacity: 0; transition: .3s; }
.creative-menu li a:after { content: ''; position: absolute; top: 2px; left: 0; width: 100%; height: 100%; background-color: var(--primary-color); transform: scale(0); opacity: 0; transition: .3s; z-index: -1; }
.creative-menu li a:hover { color: white; }
.creative-menu li a:hover:before { transform: scaleY(1); opacity: 1; }
.creative-menu li a:hover:after { transform: scaleY(1); opacity: 1; }

/* === START: ANIMATED GRADIENT TITLE V3 === */
.gradient-text {
    display: block;
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(90deg, #3700ff, #00c2ff, #00ff75);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: animate-gradient 8s linear infinite;
}

@keyframes animate-gradient {
    to { background-position: -200% center; }
}

.aurora-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.aurora-bg .aurora__item {
    overflow: hidden;
    position: absolute;
    width: 60vw;
    height: 60vw;
    background-color: #333;
    border-radius: 37% 29% 27% 27% / 28% 25% 41% 37%;
    filter: blur(4rem);
    mix-blend-mode: overlay;
    opacity: 0.25;
}

body.light-theme .aurora-bg .aurora__item {
    background-color: #ddd;
    mix-blend-mode: multiply;
    opacity: 0.7;
}

.aurora-bg .aurora__item:nth-of-type(1) { top: -50%; animation: aurora-border 6s ease-in-out infinite, aurora-1 12s ease-in-out infinite alternate; }
.aurora-bg .aurora__item:nth-of-type(2) { background-color: #555; right: 0; top: 0; animation: aurora-border 6s ease-in-out infinite, aurora-2 12s ease-in-out infinite alternate; }
body.light-theme .aurora-bg .aurora__item:nth-of-type(2) { background-color: #c7c7c7; }
.aurora-bg .aurora__item:nth-of-type(3) { background-color: #222; left: 0; bottom: 0; animation: aurora-border 6s ease-in-out infinite, aurora-3 8s ease-in-out infinite alternate; }
body.light-theme .aurora-bg .aurora__item:nth-of-type(3) { background-color: #e0e0e0; }
.aurora-bg .aurora__item:nth-of-type(4) { background-color: #444; right: 0; bottom: -50%; animation: aurora-border 6s ease-in-out infinite, aurora-4 24s ease-in-out infinite alternate; }
body.light-theme .aurora-bg .aurora__item:nth-of-type(4) { background-color: #d6d6d6; }

@keyframes aurora-1 { 0% { top: 0; right: 0; } 50% { top: 100%; right: 75%; } 75% { top: 100%; right: 25%; } 100% { top: 0; right: 0; } }
@keyframes aurora-2 { 0% { top: -50%; left: 0%; } 60% { top: 100%; left: 75%; } 85% { top: 100%; left: 25%; } 100% { top: -50%; left: 0%; } }
@keyframes aurora-3 { 0% { bottom: 0; left: 0; } 40% { bottom: 100%; left: 75%; } 65% { bottom: 40%; left: 50%; } 100% { bottom: 0; left: 0; } }
@keyframes aurora-4 { 0% { bottom: -50%; right: 0; } 50% { bottom: 0%; right: 40%; } 90% { bottom: 50%; right: 25%; } 100% { bottom: -50%; right: 0; } }
@keyframes aurora-border { 0% { border-radius: 37% 29% 27% 27% / 28% 25% 41% 37%; } 25% { border-radius: 47% 29% 39% 49% / 61% 19% 66% 26%; } 50% { border-radius: 57% 23% 47% 72% / 63% 17% 66% 33%; } 75% { border-radius: 28% 49% 29% 100% / 93% 20% 64% 25%; } 100% { border-radius: 37% 29% 27% 27% / 28% 25% 41% 37%; } }