@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;600&family=Noto+Sans+SC:wght@300;400;500&display=swap');

:root {
    --glass-bg: rgba(15, 17, 26, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent-orange: #FFAB91;
    --accent-blue: #81D4FA;
    --card-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

body {
    font-family: 'Noto Sans SC', sans-serif;
    -webkit-font-smoothing: antialiased;
    color: #e2e8f0;
}

.font-serif { font-family: 'Noto Serif SC', serif; }

/* Advanced Glassmorphism */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(25px) saturate(180%);
    -webkit-backdrop-filter: blur(25px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 32px;
    box-shadow: var(--card-shadow);
}

.glass-btn {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.glass-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

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

.glass-input {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 14px 20px;
    color: white;
    outline: none;
    transition: all 0.3s ease;
}

.glass-input:focus {
    border-color: var(--accent-orange);
    background: rgba(255, 255, 255, 0.03);
    box-shadow: 0 0 20px rgba(255, 171, 145, 0.1);
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(5%, 5%) scale(1.1); }
}

.animate-float { animation: float 15s infinite ease-in-out; }
.animate-float-delayed { animation: float 20s infinite ease-in-out reverse; }

.page-transition-enter { opacity: 0; transform: translateY(20px) scale(0.98); }
.page-transition-active { opacity: 1; transform: translateY(0) scale(1); transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1); }

/* Timeline UI */
.timeline-dot {
    width: 12px;
    height: 12px;
    border: 2px solid var(--accent-orange);
    background: #0a0c10;
    box-shadow: 0 0 10px var(--accent-orange);
    border-radius: 50%;
}

.timeline-line {
    position: absolute;
    left: 21px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.1) 15%, rgba(255, 255, 255, 0.1) 85%, transparent);
}

/* Scrollbar Refinement */
.custom-scrollbar::-webkit-scrollbar { width: 4px; }
.custom-scrollbar::-webkit-scrollbar-track { background: transparent; }
.custom-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.15); }

/* Responsive Form Adjustments */
@media (max-width: 768px) {
    #view-container { height: 95vh; border-radius: 0; }
    .glass-card { border-radius: 20px; }
    .nav-item span { display: none; }
    .nav-item i { margin-right: 0 !important; }
}

.prompt-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 99px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
    user-select: none;
    white-space: nowrap;
}

.prompt-tag:hover {
    background: var(--accent-orange);
    color: #000;
    border-color: var(--accent-orange);
}

/* Sidebar Active State */
.nav-item.active {
    background: rgba(255, 171, 145, 0.08);
    border-color: rgba(255, 171, 145, 0.2);
    color: var(--accent-orange) !important;
}

/* AI Glow Effect */
.ai-glow-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.02) 0%, rgba(255,255,255,0.05) 100%);
    border-left: 2px solid var(--accent-orange);
    box-shadow: inset 0 0 20px rgba(255, 171, 145, 0.05);
}