/* --- Base Styles & Custom Fonts --- */
        :root {
            --dark-bg: #0d1118;
            --accent: #A11312;
            --light: #F8E6DE;
            --navbar-height: 85px; /* Define navbar height as a variable */
        }

        body {
            background-color: var(--dark-bg);
            color: var(--light);
            font-family: 'Inter', sans-serif;
            overflow-x: hidden;
        }

        .font-orbitron {
            font-family: 'Orbitron', sans-serif;
        }

        /* --- Responsive Navbar Design --- */
        .navbar-container {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 50;
            display: flex;
            justify-content: center;
            padding: 12px 1.5rem;
            height: var(--navbar-height);
        }

        .navbar {
            position: relative;
            overflow: visible; /* Changed from hidden to allow dropdown */
            border-radius: 20px;
            padding: 12px 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            z-index: 1;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0);
            transition: box-shadow 0.5s ease-out;
        }

        .navbar-bg {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            z-index: -1;
            border-radius: 20px;
            background-color: #0b0e14cb;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transform: scaleX(0);
            transform-origin: center;
            opacity: 0;
        }
        
        .navbar.navbar-scrolled {
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
        }

        .nav-logo {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.5rem;
            font-weight: 700;
            color: white;
            text-decoration: none;
            flex-shrink: 0;
        }

        /* Desktop Navigation Links */
        .nav-links {
            display: none;
        }

        @media (min-width: 768px) {
            .nav-links {
                display: flex;
                gap: 10px;
            }
        }

        .nav-links a {
            position: relative;
            padding: 8px 16px;
            color: var(--light);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease, text-shadow 0.3s ease;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--light);
            border-radius: 4px;
            transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--light);
            text-shadow: 0 0 1px var(--light), 0 0 1px var(--light);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 70%;
        }

        /* --- Animated Hamburger Menu Button --- */
        .hamburger-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            z-index: 100;
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }

        .hamburger-btn svg {
            height: 2.5em;
            transition: transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .hamburger-btn .line {
            fill: none;
            stroke: white; /* Changed from black to white */
            stroke-linecap: round;
            stroke-linejoin: round;
            stroke-width: 3;
            transition:
                stroke-dasharray 600ms cubic-bezier(0.4, 0, 0.2, 1),
                stroke-dashoffset 600ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .hamburger-btn .line-top-bottom {
            stroke-dasharray: 12 63;
        }
        
        .hamburger-btn.active svg {
            transform: rotate(-45deg);
        }
        
        .hamburger-btn.active svg .line-top-bottom {
            stroke-dasharray: 20 300;
            stroke-dashoffset: -32.42;
        }

        @media (min-width: 768px) {
            .hamburger-btn {
                display: none;
            }
        }

        /* --- New Mobile Dropdown Menu --- */
        .mobile-menu {
            position: absolute;
            top: calc(100%); /* Position below the navbar with a gap */
            left: 0;
            width: 100%;
            background-color: #0b0e149d;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            z-index: -10; /* Keep it behind navbar content */
            border-radius: 16px;
            padding: 0.75rem;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
            
            /* Animation properties */
            opacity: 0;
            transform: translateY(-20px) scale(0.98);
            transform-origin: top center;
            transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            pointer-events: none;
            
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .mobile-menu.active {
            opacity: 1;
            transform: translateY(0) scale(1);
            pointer-events: auto;
        }

        .mobile-menu a {
            color: var(--light);
            font-weight: 500;
            padding: 0.75rem 1rem;
            border-radius: 12px;
            transition: background-color 0.3s ease, color 0.3s ease;
            display: flex;
        }

        .mobile-menu a:hover, .mobile-menu a.active {
            background-color: #181f2c9d;
            color: white;
        }

        /* --- Hero Section Background --- */
        #beranda {
            position: relative;
            background-image: url('../img/bg.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        #beranda::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to right, rgba(11, 14, 20, 0.856), rgba(28, 6, 6, 0.6));
            z-index: 2;
        }

        #hero-title {
            min-height: 150px;
        }
        
        #hero-canvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 3;
        }

        #tentang, #cara-kerja {
            position: relative;
            overflow: hidden;
        }

        #tentang::before, #cara-kerja::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-image: url('../img/bg.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            opacity: 0.05; 
            z-index: -1;
        }

        .cta-button {
            position: relative;
            padding: 1rem 1.5rem; 
            font-size: 1.07rem; 
            z-index: 0;
            overflow: hidden;
            transition: padding 0.5s ease-in-out, font-size 0.5s ease-in-out, box-shadow 0.5s ease-in-out;
        }

        .cta-button:hover {
            padding: 1rem 1.8rem; 
            font-size: 1.1rem; 
            box-shadow: 0 0 25px rgba(255, 255, 255, 0.3), 0 0 35px rgba(161, 19, 18, 0.6);
        }

        .cta-button::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: 0.75rem;
            padding: 2px;
            background: linear-gradient(270deg, #F8E6DE, #A11312, #F8E6DE);
            background-size: 400%;
            animation: glow-border 5s linear infinite;
            z-index: -1;
            mask: linear-gradient(#F8E6DE 0 0) content-box, linear-gradient(#F8E6DE 0 0);
            -webkit-mask: linear-gradient(#F8E6DE 0 0) content-box, linear-gradient(#F8E6DE 0 0);
            mask-composite: exclude;
            -webkit-mask-composite: destination-out;
            filter: blur(1.5px) brightness(1.8);
            opacity: 0;
            transition: opacity 0.3s ease-in-out;
        }

        .cta-button:hover::before {
            opacity: 1;
            z-index: 20;
        }

        @keyframes glow-border {
            0% { background-position: 0% 50%; }
            100% { background-position: 400% 50%; }
        }

        .tilt-container {
            transform-style: preserve-3d;
            transform: perspective(1000px);
        }

        .glass-card {
            position: relative;
            background: rgba(248, 230, 222, 0.05);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(248, 230, 222, 0.1);
            transition: background 0.3s, border 0.3s, transform 0.3s;
            overflow: hidden;
            border-radius: 20px;
            z-index: 0;
        }

        .glass-card:hover {
            background: rgba(248, 230, 222, 0.1);
        }

        .glass-card::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: inherit;
            padding: 2px;
            background: linear-gradient(90deg, #9c0808, #F8E6DE, #9c0808);
            background-size: 300% 300%;
            animation: border-light 4s linear infinite;
            z-index: 1;
            mask: linear-gradient(#f8f8f8 0 0) content-box, linear-gradient(#f8f8f8 0 0);
            -webkit-mask: linear-gradient(#f8f8f8 0 0) content-box, linear-gradient(#f8f8f8 0 0);
            mask-composite: exclude;
            -webkit-mask-composite: destination-out;
            box-sizing: border-box;
            filter: blur(3px) brightness(2);
            pointer-events: none;
        }

        @keyframes border-light {
            0% { background-position: 0% 50%; }
            100% { background-position: 300% 50%; }
        }
        
        .flip-card {
            transform-style: preserve-3d;
            transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
        }
        .flip-card-inner {
            position: relative;
            width: 100%;
            height: 100%;
            transform-style: preserve-3d;
        }
        .flip-card-front, .flip-card-back {
            position: absolute;
            width: 100%;
            height: 100%;
            -webkit-backface-visibility: hidden;
            backface-visibility: hidden;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .flip-card-back {
            transform: rotateY(180deg);
        }
        .flip-card.is-flipped {
            transform: rotateY(180deg);
        }
        
        .timeline-line {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 3px;
            height: 100%;
            background-color: rgba(248, 230, 222, 0.1);
        }
        @media (max-width: 768px) {
            .timeline-line {
                left: 20px;
            }
        }
        
        /* --- Footer Social Icons --- */
        .social-links-container {
            display: flex;
            justify-content: center;
            column-gap: 20px;
            margin-top: 15px;
        }

        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            text-decoration: none;
            outline: 2px solid var(--light);
            border-radius: 50%;
            transition: all 0.45s ease-in-out;
            color: var(--light);
        }

        .social-icon svg {
            margin: auto;
            width: 24px;
            height: 24px;
            transition: all 0.45s ease-in-out;
        }

        .social-icon:hover {
            transform: rotate(360deg);
            transform-origin: center center;
            background-color: var(--light);
            color: #2d2e32;
            outline-color: #2d2e32;
            outline-offset: 3px;
        }

        .social-icon-twitter:hover {
            background-color: #000000;
            outline-color: #000000;
        }
        .social-icon-facebook:hover {
            background-color: #1877F2;
            outline-color: #1877F2;
        }
        .social-icon-instagram:hover {
            background: linear-gradient(45deg, #f58529, #f77737, #dd2a7b, #8134af, #515bd4);
            outline-color: #dd2a7b;
        }
        .social-icon-youtube:hover {
            background-color: #FF0000;
            outline-color: #FF0000;
        }

        .social-icon:hover svg {
            filter: invert(100%) sepia(100%) saturate(0%) hue-rotate(305deg)
                brightness(103%) contrast(103%);
        }