:root {
    /* Color Palette based on Mindmate Image */
    --bg-dark: #081426;        /* Hampir hitam kehijauan */
    --bg-card: #10233f;        /* Abu-hijau gelap */
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border-glass: rgba(255, 255, 255, 0.1);
    
    --text-main: #ffffff;
    --text-muted: #8e9b95;
    --text-highlight: #64b5ff; /* Hijau pucat elegan */
    
    --accent-green: #2f3e35;
    --accent-light: #ffffff;
    --accent-btn: #ffffff;
    --accent-btn-text: #0d1110;

    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Manrope', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* --- UTILITIES --- */
.hidden { display: none !important; }
.hidden-section { display: none !important; }

/* --- LANDING PAGE STYLES --- */
.landing-container {
    height: 100vh;
    padding: 24px;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, #0d1110 0%, #131a17 100%);
    position: relative;
    overflow-y: auto;
}

.landing-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-highlight);
}

.skip-btn {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.landing-hero h1 {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 400;
    color: #e0e0e0;
    margin-bottom: 40px;
}

.landing-hero h1 i {
    font-style: italic;
    color: var(--text-muted);
}

.highlight-text {
    color: var(--text-highlight);
}

.feature-stack {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-grow: 1;
}

.feature-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    backdrop-filter: blur(10px);
}

.icon-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
}

.feature-text p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.landing-footer-actions {
    margin-top: 30px;
    text-align: center;
}

.primary-btn-lg {
    background: var(--accent-btn);
    color: var(--accent-btn-text);
    width: 100%;
    padding: 18px;
    border: none;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 25px;
    transition: transform 0.2s;
}

.primary-btn-lg:active {
    transform: scale(0.98);
}

/* CREDITS STYLING */
.professional-credits {
    border-top: 1px solid var(--border-glass);
    padding-top: 15px;
    font-size: 0.7rem;
    color: #555;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.professional-credits strong {
    color: #777;
}

.sub-credit, .contact-credit {
    margin-top: 4px;
    text-transform: none;
    font-size: 0.65rem;
    opacity: 0.7;
}

/* --- MAIN APP STYLES --- */
.app-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg-dark);
    position: relative;
}

.app-header {
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-dark);
    z-index: 10;
}

.app-title {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: var(--text-highlight);
}

#menu-toggle, #close-sidebar {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
}

.user-avatar img {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    border: 2px solid var(--bg-glass);
}

/* CHAT AREA */
.chat-area {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    padding-bottom: 100px; /* Space for input bar */
}

/* Welcome Screen */
.welcome-container {
    margin-top: 20px;
}

.greeting {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    color: var(--text-highlight);
    margin-bottom: 30px;
    font-weight: 400;
}

.user-name {
    color: var(--text-main);
}

.quick-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.action-pill {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    padding: 10px 16px;
    border-radius: 20px;
    white-space: nowrap;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-main);
}

.explore-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.explore-card {
    background: #1e2422;
    padding: 20px;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
}

.card-icon {
    width: 30px; height: 30px;
    display: flex;align-items: center; justify-content: center;
    color: var(--text-muted);
}

.explore-card h3 {
    font-size: 1.1rem;
    font-weight: 500;
}

.explore-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 20px;
}

.arrow-btn {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: #333;
    border-radius: 50%;
    width: 25px; height: 25px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem;
}

/* Chat Results */
.chat-bubble {
    padding: 20px;
    border-radius: 20px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.user-bubble {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
    text-align: right;
    margin-left: auto;
    max-width: 80%;
    border-radius: 20px 20px 0 20px;
}

.ai-bubble {
    background: var(--bg-main); /* White/light in ref, but dark mode here */
    background: #ffffff;
    color: #1a201d; /* Text Dark on White Bubble */
    border-radius: 20px 20px 20px 0;
    max-width: 100%;
}

.bubble-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #0d1110;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bubble-content {
    font-size: 0.95rem;
}

.bubble-footer {
    margin-top: 15px;
    border-top: 1px solid #eee;
    padding-top: 10px;
    display: flex;
    justify-content: flex-end;
}

.action-icons span {
    color: #aaa;
    margin-left: 10px;
    font-size: 1.2rem;
    cursor: pointer;
}

.info-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 15px;
    margin-bottom: 15px;
    border: 1px solid var(--border-glass);
}

.info-card h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.source-list a, .similar-list li {
    display: block;
    padding: 10px;
    background: rgba(0,0,0,0.2);
    margin-bottom: 8px;
    border-radius: 8px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.85rem;
    transition: 0.2s;
}

.similar-list li:hover {
    background: rgba(255,255,255,0.1);
    cursor: pointer;
}

/* INPUT AREA FIXED */
.input-area-fixed {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 15px 20px 25px 20px;
    background: linear-gradient(0deg, var(--bg-dark) 80%, transparent 100%);
    z-index: 100;
}

.search-bar-wrapper {
    display: flex;
    align-items: center;
    background: #2a3330;
    border-radius: 50px;
    padding: 8px 8px 8px 20px;
    border: 1px solid var(--border-glass);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

#question-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
}

#submit-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--text-main);
    color: var(--bg-dark);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.2s;
}

#submit-btn:hover {
    transform: scale(1.05);
}

/* SIDEBAR OVERLAY */
.sidebar-hidden {
    position: fixed;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    z-index: 200;
    background: rgba(0,0,0,0.5);
    transition: 0.3s;
}

.sidebar-visible {
    left: 0;
}

.sidebar-content {
    width: 80%;
    max-width: 300px;
    height: 100%;
    background: #151a18;
    padding: 25px;
    display: flex;
    flex-direction: column;
    box-shadow: 5px 0 20px rgba(0,0,0,0.5);
}

.sidebar-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
}

.history-list-container {
    flex: 1;
    overflow-y: auto;
}

#history-list li {
    padding: 12px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-glass);
    cursor: pointer;
}

.sidebar-footer {
    margin-top: 20px;
    text-align: center;
    opacity: 0.5;
    font-size: 0.7rem;
}

/* LOADER */
.loader-pulse {
    width: 50px;
    height: 50px;
    background: var(--text-highlight);
    border-radius: 50%;
    margin: 0 auto 10px;
    animation: pulse-ring 1.5s infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(0.8); box-shadow: 0 0 0 0 rgba(184, 203, 184, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 20px rgba(184, 203, 184, 0); }
    100% { transform: scale(0.8); box-shadow: 0 0 0 0 rgba(184, 203, 184, 0); }
}

#loading {
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
}

.mini-btn{margin-top:8px;background:#2196f3;color:white;border:none;padding:8px 12px;border-radius:10px}
.api-card{border-color:rgba(100,181,255,.3)}