/* Custom CSS styling for Space Theme */

/* Custom Active Tab Class */
.tab-btn.active {
    background-color: #2c67ed;
    color: #ffffff;
    box-shadow: 0 0 15px rgba(44, 103, 237, 0.5);
}

/* Background Stars Keyframes Animation */
#aurora-container {
    position: fixed;
    z-index: 0;
    top: 0;
    left: 0;
    width: 100%;
    height: min(55vh, 520px);
    overflow: hidden;
    pointer-events: none;
    opacity: 0.55;
    mask-image: linear-gradient(to bottom, #000 35%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, #000 35%, transparent 100%);
}

#aurora-container::before,
#aurora-container::after {
    position: absolute;
    top: -65%;
    left: -25%;
    width: 150%;
    height: 150%;
    border-radius: 50%;
    filter: blur(55px);
    content: "";
    will-change: transform;
}

#aurora-container::before {
    background: linear-gradient(
        115deg,
        transparent 28%,
        rgba(28, 150, 255, 0.18) 42%,
        rgba(69, 91, 255, 0.3) 50%,
        rgba(151, 58, 255, 0.2) 58%,
        transparent 72%
    );
    animation: aurora-drift 18s ease-in-out infinite alternate;
}

#aurora-container::after {
    background: linear-gradient(
        70deg,
        transparent 34%,
        rgba(0, 220, 255, 0.13) 46%,
        rgba(114, 65, 255, 0.18) 54%,
        transparent 68%
    );
    animation: aurora-drift 24s ease-in-out -8s infinite alternate-reverse;
}

@keyframes aurora-drift {
    from {
        transform: translate3d(-5%, -2%, 0) rotate(-8deg) scale(1);
    }
    to {
        transform: translate3d(5%, 4%, 0) rotate(8deg) scale(1.12);
    }
}

#stars-container {
    z-index: 1;
}

@keyframes starPulse {
    0%, 100% {
        opacity: 0.2;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

.star {
    position: absolute;
    background-color: #ffffff;
    border-radius: 50%;
    animation: starPulse infinite ease-in-out;
}

.name-typing-text {
    border-right: 0.07em solid #93c5fd;
    padding-right: 0.08em;
    animation: typewriterCaret 0.8s steps(1) infinite;
}

@keyframes typewriterCaret {
    50% {
        border-color: transparent;
    }
}

.welcome-badge {
    border-radius: 9999px;
    box-shadow: 0 0 20px rgba(44, 103, 237, 0.35);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.welcome-badge-content {
    background: rgba(11, 15, 25, 0.72);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(147, 197, 253, 0.2);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.welcome-badge:hover {
    box-shadow: 0 0 18px rgba(44, 103, 237, 0.85), 0 0 38px rgba(168, 85, 247, 0.65);
    transform: translateY(-2px);
}

.welcome-badge:hover .welcome-badge-content {
    background: rgba(30, 41, 59, 0.72);
    border-color: rgba(147, 197, 253, 0.65);
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Style Tombol Materi */
.materi-btn {
    background: linear-gradient(135deg, #1f4068, #162447);
    color: white;
    border: 2px solid transparent;
    padding: 15px 30px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 12px;
    cursor: pointer;
    width: 80%;
    max-width: 300px;
    margin: 10px auto;
    display: block;
    transition: all 0.3s ease;
}

.materi-btn:hover {
    border-color: #00d2ff;
    box-shadow: 0 0 10px #00d2ff;
}

.materi-btn.active {
    background: #00d2ff;
    color: #0d1117;
    box-shadow: 0 0 15px #00d2ff, 0 0 30px #00d2ff;
    border-color: #00d2ff;
}

.sub-text {
    font-size: 12px;
    color: #b0c4de;
    margin-top: 4px;
    font-weight: normal;
}

.content-box {
    display: none;
    background-color: #161b22;
    border: 1px solid #30363d;
    border-radius: 15px;
    padding: 20px;
    margin: 20px auto;
    width: 90%;
    max-width: 400px;
    text-align: left;
}

.content-box:not([hidden]) {
    display: block;
}

.content-box h3 {
    color: #00d2ff;
    font-size: 18px;
    margin-bottom: 15px;
}

.content-box ul {
    padding-left: 20px;
    margin: 0;
}

.content-box li {
    font-size: 14px;
    color: #c9d1d9;
    margin-bottom: 2em; 
}

.content-box li:last-child {
    margin-bottom: 0;
}
/* =========================================
   GAYA UNTUK HAMBURGER MENU & DROPDOWN NAVBAR
   ========================================= */

/* Styling tambahan untuk menu dropdown saat dibuka di HP / Laptop */
#nav-menu {
    background-color: rgba(22, 27, 34, 0.95) !important;
    backdrop-filter: blur(8px);
    border: 1px solid #30363d !important;
    border-radius: 15px !important;
    padding: 20px !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

/* Styling untuk setiap link di dalam menu hamburger */
#nav-menu a {
    color: #c9d1d9;
    padding: 10px 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

#nav-menu a:hover {
    background-color: rgba(0, 210, 255, 0.1);
    color: #00d2ff;
    box-shadow: 0 0 10px rgba(0, 210, 255, 0.2);
}

/* Tombol Hamburger (Ikon 3 Garis) */
#hamburger-btn {
    background: none;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease;
}

#hamburger-btn:active {
    transform: scale(0.9);
}

.aduz-brand {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    margin-left: 5px;
}

.aduz-brand-label {
    color: #cbd5e1;
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.aduz-logo {
    position: relative;
    isolation: isolate;
    display: inline-flex;
    flex: 0 0 76px;
    width: 76px;
    height: 76px;
    align-items: center;
    justify-content: center;
    margin: 5px 0;
    border: 1px solid rgba(96, 165, 250, 0.65);
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #172554, #080d1b 72%);
    box-shadow: 0 0 18px rgba(44, 103, 237, 0.35), inset 0 0 12px rgba(44, 103, 237, 0.2);
    text-decoration: none;
    animation: aduz-float 4s ease-in-out infinite;
}

.aduz-logo-text {
    color: #dbeafe;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(96, 165, 250, 0.8);
}

.aduz-logo-orbit {
    position: absolute;
    z-index: -1;
    inset: 10px -9px;
    border: 1px solid rgba(168, 85, 247, 0.75);
    border-radius: 50%;
    transform: rotate(-32deg);
    box-shadow: 0 0 10px rgba(168, 85, 247, 0.35);
}

.aduz-logo-orbit::after {
    position: absolute;
    top: 5px;
    right: 8px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #a855f7;
    box-shadow: 0 0 8px #a855f7;
    content: "";
}

.aduz-logo:hover {
    box-shadow: 0 0 26px rgba(44, 103, 237, 0.6), inset 0 0 14px rgba(44, 103, 237, 0.3);
}

@keyframes aduz-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-7px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .aduz-logo,
    .name-typing-text,
    .welcome-badge,
    #aurora-container::before,
    #aurora-container::after {
        animation: none;
        transition: none;
    }
}

@media (max-width: 480px) {
    .aduz-brand {
        gap: 12px;
    }

    .aduz-brand-label {
        font-size: 15px;
    }
}