:root {
    --black-deep:   #0a0608;
    --black-mid:    #110c0e;
    --black-soft:   #1a1215;
    --brown-dark:   #2d1a0e;
    --brown-mid:    #4a2c18;
    --brown-warm:   #6b3f20;
    --brown-light:  #8b5a2b;
    --red-deep:     #6b0a0a;
    --red-mid:      #9b1515;
    --red-vivid:    #cc2222;
    --red-bright:   #e83333;
    --red-glow:     #ff4444;
    --cream:        #f5e8d0;
    --cream-dim:    #c9b89a;
    --cream-faint:  #7a6a55;
    --white:        #fdf6ec;

    --sidebar-bg:   #0e0a0b;
    --chat-bg:      #0a0608;
    --bubble-bot:   #1e1210;
    --bubble-user:  #2a1208;
    --border:       rgba(139, 90, 43, 0.25);
    --border-hot:   rgba(204, 34, 34, 0.5);

    --font-display: 'Cinzel Decorative', serif;
    --font-body:    'Crimson Pro', serif;
    --font-chinese: 'Noto Serif SC', serif;

    --glow-red:     0 0 20px rgba(204, 34, 34, 0.4);
    --shadow-deep:  0 8px 32px rgba(0, 0, 0, 0.8);
}

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

html {
    height: 100%;
    height: -webkit-fill-available;
}

body {
    height: 100%;
    height: 100dvh; 
    overflow: hidden;
    background: var(--black-deep);
    color: var(--cream);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
}

/* ── Background ─────────────────────────────────────────── */
#particles-canvas {
    position: fixed; inset: 0;
    pointer-events: none; z-index: 0; opacity: 0.5;
}

.bg-overlay {
    position: fixed; inset: 0; z-index: 0;
    background:
        radial-gradient(ellipse 60% 50% at 15% 50%, rgba(107,10,10,0.12) 0%, transparent 70%),
        radial-gradient(ellipse 40% 60% at 85% 20%, rgba(74,44,24,0.10) 0%, transparent 70%),
        radial-gradient(ellipse 50% 80% at 50% 100%, rgba(30,10,10,0.20) 0%, transparent 60%);
    pointer-events: none;
}

/* ── Petals ─────────────────────────────────────────────── */
.petals-container {
    position: fixed; inset: 0;
    pointer-events: none; z-index: 1; overflow: hidden;
}

.petal {
    position: absolute; top: -20px;
    animation: petalFall linear infinite; opacity: 0.5;
}

@keyframes petalFall {
    0%   { transform: translateY(-20px) rotate(0deg) translateX(0); opacity: 0; }
    10%  { opacity: 0.5; }
    90%  { opacity: 0.2; }
    100% { transform: translateY(110vh) rotate(720deg) translateX(60px); opacity: 0; }
}

/* ── Layout ─────────────────────────────────────────────── */
.app-container {
    position: fixed;
    top: 0; left: 0; right: 0;
    bottom: 0;
    height: var(--app-height, 100dvh);
    z-index: 2;
    display: flex;
    overflow: hidden;
}

/* ── Sidebar ────────────────────────────────────────────── */
.sidebar {
    width: 260px; min-width: 260px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
    align-items: center; padding: 24px 16px;
    overflow-y: auto; position: relative; flex-shrink: 0;
}

.sidebar::before {
    content: ''; position: absolute;
    top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, transparent, var(--red-mid), var(--brown-warm), var(--red-mid), transparent);
}

.sidebar-logo {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 28px; width: 100%;
}

.logo-emblem {
    font-size: 26px;
    filter: drop-shadow(0 0 10px rgba(204,34,34,0.7));
    animation: skullPulse 3s ease-in-out infinite;
}

@keyframes skullPulse {
    0%, 100% { filter: drop-shadow(0 0 10px rgba(204,34,34,0.7)); }
    50%       { filter: drop-shadow(0 0 18px rgba(255,80,80,0.9)); }
}

.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-main { font-family: var(--font-display); font-size: 11px; color: var(--red-bright); letter-spacing: 0.05em; }
.logo-sub  { font-family: var(--font-display); font-size: 9px; color: var(--brown-light); letter-spacing: 0.1em; text-transform: uppercase; }

/* Portrait */
.hutao-portrait-wrap {
    position: relative; width: 110px; height: 110px; margin: 8px 0 16px;
}

.portrait-ring {
    position: absolute; inset: -6px; border-radius: 50%;
    border: 2px solid transparent;
    background: linear-gradient(135deg, var(--red-mid), var(--brown-warm), var(--red-mid)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out; mask-composite: exclude;
    animation: ringRotate 6s linear infinite;
}

@keyframes ringRotate { to { transform: rotate(360deg); } }

.hutao-portrait {
    width: 110px; height: 110px; border-radius: 50%;
    background: radial-gradient(circle at 40% 35%, var(--brown-warm), var(--red-deep), var(--black-deep));
    display: flex; align-items: center; justify-content: center;
    border: 2px solid var(--border); overflow: hidden;
    position: relative; z-index: 1;
}

.portrait-inner {
    font-size: 52px;
    filter: drop-shadow(0 0 14px rgba(255,100,0,0.9));
    animation: floatPortrait 3s ease-in-out infinite;
}

@keyframes floatPortrait {
    0%, 100% { transform: translateY(0) scale(1); }
    50%       { transform: translateY(-5px) scale(1.05); }
}

.portrait-glow {
    position: absolute; bottom: -8px; left: 50%;
    transform: translateX(-50%); width: 70px; height: 20px;
    background: radial-gradient(ellipse, rgba(204,34,34,0.5), transparent);
    filter: blur(8px);
}

.char-info { text-align: center; margin-bottom: 20px; }
.char-name  { font-family: var(--font-display); font-size: 20px; color: var(--white); text-shadow: var(--glow-red); letter-spacing: 0.1em; }
.char-title { font-size: 13px; color: var(--cream-dim); font-style: italic; margin: 2px 0 8px; }

.element-badge { display: inline-block; padding: 3px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.element-badge.pyro { background: rgba(204,34,34,0.2); border: 1px solid rgba(204,34,34,0.5); color: var(--red-glow); }

.sidebar-divider {
    width: 100%; text-align: center; color: var(--cream-faint);
    font-size: 11px; letter-spacing: 0.3em; margin: 8px 0 16px; position: relative;
}
.sidebar-divider::before,
.sidebar-divider::after {
    content: ''; position: absolute; top: 50%; width: 30%; height: 1px;
    background: linear-gradient(to right, transparent, var(--border));
}
.sidebar-divider::before { left: 0; }
.sidebar-divider::after  { right: 0; background: linear-gradient(to left, transparent, var(--border)); }

.sidebar-stats { width: 100%; display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.stat-item {
    display: flex; align-items: center; gap: 8px; padding: 8px 12px;
    background: rgba(255,255,255,0.03); border: 1px solid var(--border);
    border-radius: 8px; font-size: 13px;
}
.stat-icon  { font-size: 16px; }
.stat-label { color: var(--cream-faint); flex: 1; }
.stat-val   { color: var(--cream); font-weight: 600; }

.status-dot { color: #4caf50 !important; }
.status-dot::before { content: '●'; font-size: 8px; margin-right: 4px; animation: statusPulse 2s ease-in-out infinite; }
@keyframes statusPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

.sidebar-footer { margin-top: auto; width: 100%; text-align: center; }

.btn-reset {
    width: 100%; padding: 10px;
    background: rgba(107,10,10,0.2); border: 1px solid rgba(155,21,21,0.4);
    border-radius: 8px; color: var(--red-bright); font-family: var(--font-body);
    font-size: 14px; cursor: pointer; transition: all 0.2s; margin-bottom: 16px;
    display: flex; align-items: center; justify-content: center; gap: 6px;
}
.btn-reset:hover { background: rgba(155,21,21,0.3); box-shadow: var(--glow-red); }

.sidebar-quote { font-size: 11px; color: var(--cream-faint); font-style: italic; line-height: 1.5; padding: 0 4px; }

/* ── Chat Area ──────────────────────────────────────────── */
.chat-area {
    flex: 1; min-height: 0; min-width: 0;
    display: flex; flex-direction: column;
    overflow: hidden; background: var(--chat-bg); position: relative;
}

.chat-area::before {
    content: ''; position: absolute; inset: 0;
    background-image: repeating-linear-gradient(0deg, transparent, transparent 48px, rgba(139,90,43,0.03) 48px, rgba(139,90,43,0.03) 49px);
    pointer-events: none;
}

/* ── Header ─────────────────────────────────────────────── */
.chat-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    background: rgba(14,10,11,0.95); backdrop-filter: blur(10px);
    position: relative; z-index: 5; flex-shrink: 0;
}

.chat-header::after {
    content: ''; position: absolute; bottom: -1px; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--red-mid), transparent);
}

.header-left { display: flex; align-items: center; gap: 12px; }
.header-avatar { font-size: 30px; filter: drop-shadow(0 0 8px rgba(255,100,0,0.7)); }
.header-name { font-family: var(--font-display); font-size: 17px; color: var(--white); text-shadow: var(--glow-red); letter-spacing: 0.08em; }
.header-status { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--cream-dim); font-style: italic; margin-top: 2px; }

.pulse-dot {
    width: 7px; height: 7px; background: #4caf50; border-radius: 50%;
    display: inline-block; animation: pulseDot 2s ease-in-out infinite; flex-shrink: 0;
}
@keyframes pulseDot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.8); } }

.header-decoration { font-family: var(--font-chinese); font-size: 16px; color: var(--cream-faint); letter-spacing: 0.15em; opacity: 0.6; }

/* ── Messages ───────────────────────────────────────────── */
.messages-container {
    flex: 1; min-height: 0; overflow-y: auto;
    padding: 20px 20px 12px;
    display: flex; flex-direction: column; gap: 20px;
    position: relative; z-index: 1;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

.messages-container::-webkit-scrollbar { width: 5px; }
.messages-container::-webkit-scrollbar-track { background: transparent; }
.messages-container::-webkit-scrollbar-thumb { background: var(--brown-dark); border-radius: 3px; }

.message {
    display: flex; gap: 12px; max-width: 82%;
    animation: msgSlideIn 0.3s ease forwards;
}

@keyframes msgSlideIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

.bot-message  { align-self: flex-start; }
.user-message { align-self: flex-end; flex-direction: row-reverse; }

.msg-avatar {
    font-size: 26px; width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; filter: drop-shadow(0 0 6px rgba(255,100,0,0.5));
}

.msg-bubble {
    padding: 12px 16px; border-radius: 16px;
    position: relative; max-width: calc(100% - 50px);
}

.bot-message .msg-bubble {
    background: var(--bubble-bot); border: 1px solid var(--border);
    border-top-left-radius: 4px; box-shadow: var(--shadow-deep), inset 0 1px 0 rgba(139,90,43,0.1);
}

.user-message .msg-bubble {
    background: linear-gradient(135deg, var(--red-deep), var(--brown-dark));
    border: 1px solid rgba(204,34,34,0.3); border-top-right-radius: 4px;
    box-shadow: var(--glow-red);
}

.msg-header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.msg-name   { font-family: var(--font-display); font-size: 11px; color: var(--red-bright); letter-spacing: 0.08em; }
.user-message .msg-name { color: var(--cream-dim); }
.msg-time   { font-size: 11px; color: var(--cream-faint); }

/* ── Markdown Content ───────────────────────────────────── */
.msg-content { color: var(--cream); font-size: 15px; line-height: 1.75; }
.msg-content p { margin-bottom: 10px; }
.msg-content p:last-child { margin-bottom: 0; }
.msg-content strong { color: var(--cream); font-weight: 700; }
.msg-content em    { color: var(--cream-dim); font-style: italic; }

.msg-content h1 { font-family: var(--font-display); font-size: 21px; color: var(--red-bright); border-bottom: 1px solid var(--border-hot); padding-bottom: 6px; margin: 14px 0 10px; }
.msg-content h2 { font-family: var(--font-display); font-size: 17px; color: var(--red-mid); margin: 12px 0 8px; }
.msg-content h3 { font-size: 15px; font-weight: 600; color: var(--brown-light); margin: 10px 0 6px; }

.msg-content blockquote {
    border-left: 3px solid var(--red-mid); padding: 8px 14px;
    margin: 10px 0; background: rgba(107,10,10,0.12);
    border-radius: 0 8px 8px 0; color: var(--cream-dim); font-style: italic;
}

.msg-content code {
    background: rgba(0,0,0,0.4); border: 1px solid var(--border);
    border-radius: 4px; padding: 2px 6px; font-size: 13px;
    color: #f9c878; font-family: 'Courier New', monospace;
}

.msg-content pre {
    background: rgba(0,0,0,0.5); border: 1px solid var(--border);
    border-radius: 8px; padding: 14px; overflow-x: auto; margin: 10px 0;
}
.msg-content pre code { background: none; border: none; padding: 0; font-size: 13px; line-height: 1.6; }

.msg-content ul, .msg-content ol { padding-left: 20px; margin: 8px 0; }
.msg-content li { margin-bottom: 4px; }
.msg-content ul li::marker { color: var(--red-mid); }
.msg-content ol li::marker { color: var(--brown-light); }

.msg-content table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14px; }
.msg-content th {
    background: rgba(107,10,10,0.3); border: 1px solid var(--border-hot);
    padding: 8px 12px; color: var(--cream); font-family: var(--font-display);
    font-size: 11px; letter-spacing: 0.05em; text-align: left;
}
.msg-content td { border: 1px solid var(--border); padding: 8px 12px; color: var(--cream-dim); vertical-align: top; }
.msg-content tr:nth-child(even) td { background: rgba(255,255,255,0.02); }
.msg-content tr:hover td { background: rgba(107,10,10,0.08); }
.msg-content hr { border: none; border-top: 1px solid var(--border); margin: 12px 0; }

/* ── Typing Indicator ───────────────────────────────────── */
.typing-indicator {
    display: flex; align-items: center; gap: 10px;
    padding: 6px 20px; flex-shrink: 0;
}
.typing-avatar { font-size: 22px; filter: drop-shadow(0 0 4px rgba(255,100,0,0.5)); }
.typing-bubble {
    display: flex; align-items: center; gap: 5px;
    padding: 9px 12px; background: var(--bubble-bot);
    border: 1px solid var(--border); border-radius: 12px; border-top-left-radius: 4px;
}
.typing-bubble span { width: 7px; height: 7px; background: var(--red-mid); border-radius: 50%; animation: typingDot 1.3s ease-in-out infinite; }
.typing-bubble span:nth-child(2) { animation-delay: 0.2s; }
.typing-bubble span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingDot { 0%, 60%, 100% { transform: translateY(0); opacity: 0.4; } 30% { transform: translateY(-6px); opacity: 1; } }
.typing-text { font-size: 12px; color: var(--cream-faint); font-style: italic; }

/* ── Input Area — sticky di bawah ──────────────────────── */
.input-area {
    flex-shrink: 0;
    padding: 10px 16px;
    padding-bottom: max(12px, env(safe-area-inset-bottom, 12px));
    border-top: 1px solid var(--border);
    background: rgba(10,6,8,0.97);
    backdrop-filter: blur(12px);
    position: relative; z-index: 10;
}

.input-area::before {
    content: ''; position: absolute; top: -1px; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--red-mid), transparent);
}

.input-wrapper {
    display: flex; gap: 10px; align-items: flex-end;
    background: var(--brown-dark);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 10px 10px 10px 16px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-wrapper:focus-within {
    border-color: rgba(204,34,34,0.65);
    box-shadow: 0 0 0 3px rgba(155,21,21,0.12);
}

.msg-input {
    flex: 1; background: transparent; border: none; outline: none;
    color: var(--cream); font-family: var(--font-body);
    font-size: 15px; line-height: 1.5; resize: none;
    max-height: 140px; overflow-y: auto; scrollbar-width: thin;
}
.msg-input::placeholder { color: var(--cream-faint); font-style: italic; }
.msg-input::-webkit-scrollbar { width: 4px; }
.msg-input::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.input-actions {
    display: flex; flex-direction: column;
    align-items: flex-end; gap: 4px; flex-shrink: 0;
}

.char-counter { font-size: 10px; color: var(--cream-faint); }

.btn-send {
    width: 40px; height: 40px; border-radius: 11px;
    background: linear-gradient(135deg, var(--red-deep), var(--red-mid));
    border: 1px solid rgba(204,34,34,0.5); color: var(--white);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: all 0.2s; flex-shrink: 0;
}
.btn-send svg { width: 17px; height: 17px; }
.btn-send:enabled:hover { background: linear-gradient(135deg, var(--red-mid), var(--red-vivid)); box-shadow: var(--glow-red); transform: scale(1.05); }
.btn-send:disabled { opacity: 0.3; cursor: not-allowed; }

.input-hint { margin-top: 8px; font-size: 11px; color: var(--cream-faint); font-style: italic; text-align: center; }

/* ── Variants ───────────────────────────────────────────── */
.error-message .msg-bubble { background: rgba(107,10,10,0.25); border-color: rgba(204,34,34,0.5); }
.welcome-message .msg-bubble { border-color: rgba(155,21,21,0.35); background: linear-gradient(135deg, rgba(30,18,16,0.9), rgba(20,10,10,0.9)); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .messages-container { padding: 14px 12px 10px; }
    .input-area { padding: 10px 12px max(12px, env(safe-area-inset-bottom, 12px)); }
    .message { max-width: 96%; }
    .chat-header { padding: 12px 14px; }
    .header-decoration { display: none; }
}