/* =========================================
   琅玕资讯智能体 (Langgan Information Agent)
   2026 March Top-tier AI Design System (AUI)
========================================= */

:root {
    --bg-dark: #000000;
    --bg-panel: rgba(0, 0, 0, 0.4); 
    --bg-panel-border: rgba(255, 0, 60, 0.2);
    
    --accent-jade: #ff003c;      /* Cyber Neon Red */
    --accent-jade-glow: rgba(255, 0, 60, 0.6);
    --accent-gold: #ff3300;      /* Electric Crimson/Orange */
    --accent-blue: #8b0000;      /* Deep Blood Red */
    
    --text-primary: #ffffff;
    --text-secondary: #ffb3b3;   /* Light pink-red tint */
    --text-muted: #804040;
    
    --font-heading: 'Noto Serif SC', 'Inter', sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    
    --glass-blur: blur(25px);
    --shadow-neon: 0 0 35px var(--accent-jade-glow);
    --transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.6;
    overflow-x: hidden;
    overflow-y: hidden; /* App container handles scrolling */
    -webkit-font-smoothing: antialiased;
}

/* Background Effects */
#particle-bg {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: -1;
    background-image: url('../langgan_bg.webp');
    background-size: cover; background-position: center;
    background-color: rgba(0, 0, 0, 0.2); /* Reduced tint to let image shine */
    background-blend-mode: darken; /* Allows the Mountain/Sea image to be very visible */
    pointer-events: none;
}
#particle-bg::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    /* Soft glowing vignettes rather than covering the whole image */
    background: radial-gradient(circle at 10% 20%, rgba(255, 0, 60, 0.1), transparent 30%),
                radial-gradient(circle at 90% 80%, rgba(200, 0, 20, 0.05), transparent 35%);
    pointer-events: none;
}

/* Glassmorphism */
.glass-panel {
    background: rgba(0, 0, 0, 0.65); /* Made panels slightly darker so white text remains perfectly readable against the bright background */
    backdrop-filter: blur(15px); /* Reduced blur so the background isn't completely lost behind panels */
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--bg-panel-border);
    border-radius: 12px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* ==================
   AUI SKELETON
================== */
.aui-sidebar {
    width: 280px;
    height: calc(100vh - 40px);
    margin: 20px 0 20px 20px;
    display: flex;
    flex-direction: column;
    padding: 25px 20px;
    border-right: 1px solid var(--bg-panel-border);
    flex-shrink: 0;
    overflow-y: auto;
}

.aui-sidebar::-webkit-scrollbar { width: 4px; }
.aui-sidebar::-webkit-scrollbar-track { background: transparent; }
.aui-sidebar::-webkit-scrollbar-thumb { background: rgba(255, 0, 60, 0.2); border-radius: 3px; }

.brand {
    display: flex; align-items: center; gap: 15px; margin-bottom: 40px;
}
.brand .logo {
    width: 45px; height: 45px; border-radius: 50%;
    box-shadow: 0 0 15px var(--accent-jade);
    border: 2px solid var(--accent-jade);
}

.agent-status-panel { margin-bottom: 40px; }
.status-indicator {
    display: flex; align-items: center; gap: 10px; margin-bottom: 15px; color: var(--text-secondary);
}
.pulse-dot {
    width: 8px; height: 8px; background: var(--accent-jade); border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-jade);
    animation: pulse 2s infinite; display: inline-block;
}
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); opacity: 0.5; }
    100% { transform: scale(1); opacity: 1; }
}

.aui-prompts { display: flex; flex-direction: column; gap: 10px; }
.prompt-btn {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,0,60,0.3);
    color: var(--text-primary); text-align: left; padding: 10px 15px;
    border-radius: 8px; cursor: pointer; transition: var(--transition);
    font-size: 0.85rem; font-family: var(--font-body);
}
.prompt-btn:hover {
    background: rgba(255,0,60,0.1); border-color: var(--accent-jade);
    transform: translateX(5px); box-shadow: 0 0 10px rgba(255,0,60,0.2);
}

/* Main Area */
.aui-main {
    flex: 1; display: flex; flex-direction: column;
    height: 100vh; position: relative; padding: 20px;
}

.aui-header {
    height: 60px; display: flex; justify-content: space-between; align-items: center;
    padding: 0 25px; margin-bottom: 15px; flex-shrink: 0;
}

.btn-icon {
    background: transparent; border: none; color: var(--text-primary);
    font-size: 18px; transition: var(--transition);
}
.btn-icon:hover { color: var(--accent-jade); text-shadow: var(--shadow-neon); }

/* Chat Stream */
.chat-stream {
    flex: 1; overflow-y: auto; padding: 20px 20px 100px 20px;
    display: flex; flex-direction: column; gap: 20px;
    scroll-behavior: smooth;
}
.chat-stream::-webkit-scrollbar { width: 6px; }
.chat-stream::-webkit-scrollbar-track { background: transparent; }
.chat-stream::-webkit-scrollbar-thumb { background: rgba(255, 0, 60, 0.3); border-radius: 3px; }

/* Messages */
.message {
    display: flex; gap: 15px; max-width: 85%; animation: fadeIn 0.4s ease-out forwards;
}
.message.user {
    align-self: flex-end; flex-direction: row-reverse;
}

.message .avatar img {
    width: 36px; height: 36px; border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.2);
}
.message.agent .avatar img {
    border-color: var(--accent-jade); box-shadow: 0 0 10px rgba(255,0,60,0.3);
}

.msg-content {
    padding: 15px 20px; font-size: 0.95rem; line-height: 1.7;
}
.message.user .msg-content {
    border-right: 3px solid var(--accent-gold);
    background: rgba(255, 51, 0, 0.1);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Stream Log Box */
.log-box {
    background: rgba(0,0,0,0.6); padding: 15px; border-radius: 6px;
    font-family: 'Courier New', Courier, monospace; font-size: 0.85em;
    color: var(--text-secondary); border-left: 2px dashed var(--accent-jade);
    margin-top: 10px; margin-bottom: 10px;
}

/* Input Area */
.input-area {
    position: absolute; bottom: 20px; left: 20px; right: 20px;
    padding: 15px 20px; border-radius: 20px;
}
.input-wrapper {
    display: flex; gap: 15px; align-items: center;
}
.input-wrapper input {
    flex: 1; background: transparent; border: none; color: var(--text-primary);
    font-size: 1rem; padding: 10px; outline: none; font-family: var(--font-body);
}
.input-wrapper input::placeholder { color: rgba(255,255,255,0.3); }

.send-btn {
    width: 45px; height: 45px; border-radius: 50%; border: none;
    background: var(--accent-jade); color: #000; font-size: 1.1rem;
    cursor: pointer; transition: var(--transition); display:flex; justify-content:center; align-items:center;
}
.send-btn:hover {
    box-shadow: 0 0 20px var(--accent-jade); transform: scale(1.05);
}

/* Dynamic Cards injected into chat */
.aiga-card {
    margin-top: 15px; width: 100%; min-width: 400px;
}
.card-title {
    color: var(--accent-jade); font-size: 1.1rem; margin-bottom: 10px; display:flex; align-items:center; gap:8px;
}
.news-item {
    padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.05); cursor: pointer; transition: all 0.3s;
}
.news-item:hover { color: var(--accent-jade); padding-left: 10px; }

.btn-primary {
    background: linear-gradient(135deg, var(--accent-jade) 0%, #aa0022 100%);
    color: #fff; border: none; padding: 10px 24px; border-radius: 6px;
    font-size: 14px; font-weight: 600; cursor: pointer; transition: var(--transition);
}
.btn-primary:hover {
    box-shadow: var(--shadow-neon); transform: translateY(-2px);
}

/* Typing indicator */
.typing { display: flex; gap: 5px; padding: 10px; }
.typing span {
    width: 6px; height: 6px; background: var(--accent-jade); border-radius: 50%;
    animation: typing 1s infinite alternate;
}
.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { from { opacity: 0.3; transform: translateY(0); } to { opacity: 1; transform: translateY(-5px); } }

/* =========================================
   MOBILE RESPONSIVENESS (AUI)
========================================= */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
        overflow-x: hidden;
    }
    .aui-sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        height: 100vh;
        margin: 0;
        border-radius: 0;
        border-right: 1px solid var(--accent-jade);
        background: rgba(0, 0, 0, 0.95); /* Opaque for readability */
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        z-index: 2000;
        transition: left 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
        padding-top: 20px;
    }
    .aui-sidebar.active {
        left: 0;
    }
    .aui-main {
        padding: 10px;
        width: 100vw;
    }
    .aui-header {
        padding: 0 15px;
        margin-bottom: 10px;
    }
    .header-title span:last-child {
        font-size: 0.9rem; /* Smaller title on mobile */
    }
    .hamburger-btn {
        display: block !important; /* Show hamburger on mobile */
    }
    .message {
        max-width: 95%; /* Messages take more width on phone */
    }
    .input-area {
        left: 10px;
        right: 10px;
        bottom: 10px;
        padding: 10px;
    }
    .input-wrapper input {
        font-size: 0.9rem;
    }
    .send-btn {
        width: 40px; height: 40px;
    }
    .aiga-card {
        min-width: 100%; /* Force cards to shrink on mobile */
    }
    .modal-content {
        width: 95% !important;
        padding: 20px !important;
    }
}