:root {
    --bg-main: #090D16;
    --bg-card: rgba(17, 24, 39, 0.75);
    --bg-sidebar: rgba(13, 19, 33, 0.85);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(139, 92, 246, 0.3);
    
    --primary-violet: #8B5CF6;
    --primary-cyan: #06B6D4;
    --accent-glow: #A78BFA;

    --text-main: #F3F4F6;
    --text-muted: #9CA3AF;
    --text-subtle: #6B7280;

    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Fira Code', monospace;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(139, 92, 246, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(6, 182, 212, 0.10) 0%, transparent 45%);
}

/* App Layout Structure */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Top Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--border-color);
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    position: relative;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.core-dot {
    width: 14px;
    height: 14px;
    background: linear-gradient(135deg, var(--primary-violet), var(--primary-cyan));
    border-radius: 50%;
    box-shadow: 0 0 16px var(--primary-violet);
}

.pulse-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px solid var(--primary-violet);
    border-radius: 50%;
    animation: pulse 2.5s infinite ease-out;
}

@keyframes pulse {
    0% { transform: scale(0.6); opacity: 1; }
    100% { transform: scale(1.4); opacity: 0; }
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-text h1 span {
    background: linear-gradient(135deg, var(--primary-violet), var(--primary-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.status-bar {
    display: flex;
    gap: 0.75rem;
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    font-size: 0.82rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10B981;
    box-shadow: 0 0 10px #10B981;
}

/* Main Split View */
.main-layout {
    display: flex;
    flex: 1;
    gap: 1.5rem;
    padding: 1.5rem 0;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 340px;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    overflow-y: auto;
    backdrop-filter: blur(16px);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h2 {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.reset-btn {
    background: none;
    border: none;
    color: var(--primary-cyan);
    font-size: 0.8rem;
    cursor: pointer;
    transition: opacity 0.2s;
}

.reset-btn:hover {
    opacity: 0.7;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.control-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.88rem;
    font-weight: 500;
}

.val-badge {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--primary-cyan);
    background: rgba(6, 182, 212, 0.1);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
}

input[type="range"] {
    appearance: none;
    background: rgba(255, 255, 255, 0.1);
    height: 5px;
    border-radius: 5px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary-violet);
    cursor: pointer;
    box-shadow: 0 0 8px var(--primary-violet);
}

.control-hint {
    font-size: 0.75rem;
    color: var(--text-subtle);
}

.divider {
    height: 1px;
    background: var(--border-color);
}

.recurrent-depth-box {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(6, 182, 212, 0.1));
    border: 1px solid var(--border-glow);
    padding: 0.9rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.depth-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.depth-value {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
}

.model-meta-box {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;

}

.model-meta-box h3 {
    font-size: 0.8rem;
    color: var(--text-subtle);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.2rem;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
}

/* Content Area */
.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    overflow-y: auto;
}

.preset-section {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.preset-title {
    font-size: 0.85rem;
    color: var(--text-subtle);
}

.chips-list {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.chip {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.chip:hover {
    background: rgba(139, 92, 246, 0.15);
    border-color: var(--border-glow);
    color: var(--text-main);
}

/* Cards */
.prompt-card, .output-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem;
    backdrop-filter: blur(16px);
}

.prompt-card {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.9rem;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    resize: vertical;
    outline: none;
    transition: border-color 0.2s;
}

textarea:focus {
    border-color: var(--primary-violet);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.char-count {
    font-size: 0.8rem;
    color: var(--text-subtle);
}

.glow-btn {
    background: linear-gradient(135deg, var(--primary-violet), var(--primary-cyan));
    border: none;
    color: #FFF;
    font-weight: 600;
    padding: 0.75rem 1.6rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.glow-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(139, 92, 246, 0.5);
}

.output-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 250px;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.title-with-status {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.status-tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    text-transform: uppercase;
    font-weight: 600;
}

.status-tag.idle { background: rgba(156, 163, 175, 0.2); color: var(--text-muted); }
.status-tag.generating { background: rgba(139, 92, 246, 0.25); color: var(--accent-glow); }

.stats-pill {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--primary-cyan);
}

.output-content {
    flex: 1;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 1.1rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    white-space: pre-wrap;
    overflow-y: auto;
}

.placeholder-text {
    color: var(--text-subtle);
    font-style: italic;
}

.hidden {
    display: none !important;
}