:root {
    --bg-main: #0a0a0c;
    --bg-surface: #131316;
    --bg-surface-elevated: #1c1c21;
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent-primary: #6366f1;
    --accent-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.2);
    
    --success: #10b981;
    --error: #ef4444;
    
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    
    --transition-fast: 0.15s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    background-image: 
        radial-gradient(circle at 15% 50%, var(--accent-glow), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.1), transparent 25%);
    background-attachment: fixed;
}

.app-container {
    display: flex;
    width: 100%;
    max-width: 1400px;
    height: 90vh;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255,255,255,0.05) inset;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

/* Sidebar */
.sidebar {
    width: 380px;
    border-right: 1px solid var(--border-color);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(255,255,255,0.02) 0%, transparent 100%);
    overflow-y: auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-primary), #818cf8);
    border-radius: 8px;
    box-shadow: 0 0 15px var(--accent-glow);
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.logo h1 span {
    color: var(--text-secondary);
    font-weight: 400;
}

.description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.control-group {
    margin-bottom: 2rem;
}

.control-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

/* API Key Input */
.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    width: 100%;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    padding-right: 2.5rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-fast);
}

.input-wrapper input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.input-wrapper button {
    position: absolute;
    right: 8px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    border-radius: 4px;
}

.input-wrapper button:hover {
    color: var(--text-primary);
    background-color: rgba(255,255,255,0.05);
}

.form-textarea, .form-select {
    width: 100%;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-fast);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px;
    padding-right: 2.5rem;
}
.form-select option {
    background-color: var(--bg-main);
    color: var(--text-primary);
}

.form-textarea:focus, .form-select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.help-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Segmented Controls */
.segment-control {
    display: flex;
    background-color: var(--bg-main);
    padding: 0.25rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.segment-control.vertical {
    flex-direction: column;
}

.segment-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.6rem 1rem;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: center;
}

.segment-control.vertical .segment-btn {
    text-align: left;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.vertical .btn-title {
    color: var(--text-primary);
    font-weight: 600;
}

.vertical .btn-desc {
    font-size: 0.75rem;
    font-weight: 400;
    opacity: 0.8;
}

.segment-btn:hover:not(.active) {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
}

.segment-btn.active {
    background-color: var(--bg-surface-elevated);
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255,255,255,0.05);
}

/* Buttons */
.actions {
    margin-top: auto;
    padding-top: 2rem;
}

.primary-btn {
    width: 100%;
    background-color: var(--accent-primary);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.primary-btn:hover:not(:disabled) {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.primary-btn:active:not(:disabled) {
    transform: translateY(1px);
}

.primary-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    background-color: var(--bg-surface-elevated);
    box-shadow: none;
    border: 1px solid var(--border-color);
}

.system-status {
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    justify-content: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.status-indicator.active {
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* Main Display */
.output-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-main);
    position: relative;
    overflow: hidden;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(19, 19, 22, 0.9);
    backdrop-filter: blur(8px);
    z-index: 10;
}

.output-header h2 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.icon-btn {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
}

.icon-btn:hover {
    color: var(--text-primary);
    border-color: rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.05);
}

.editor-container {
    flex: 1;
    display: flex;
    position: relative;
    background-color: #0d0d10;
    overflow: hidden;
}

.editor-gutter {
    width: 48px;
    border-right: 1px solid var(--border-color);
    background-color: rgba(255,255,255,0.01);
    flex-shrink: 0;
}

.content-wrapper {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    position: relative;
}

.hidden {
    display: none !important;
}

/* Loading & Error States */
#loading-state, #error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
    gap: 1.5rem;
    animation: fadeIn 0.4s ease-out forwards;
}

#loading-state p, #error-state p {
    max-width: 400px;
    line-height: 1.6;
}

#error-state p {
    color: var(--error);
}

.loader-lg {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    border-top-color: var(--accent-primary);
    animation: spin 1s ease-in-out infinite;
}

/* Markdown Rendering */
.markdown-body {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 800px;
    animation: fadeIn 0.5s ease-out;
}

.placeholder-text {
    color: var(--text-muted);
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
    color: white;
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.markdown-body h1 {
    font-size: 1.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.markdown-body h2 {
    font-size: 1.4rem;
}

.markdown-body h3 {
    font-size: 1.1rem;
    color: #e5e7eb;
}

.markdown-body p {
    margin-bottom: 1rem;
}

.markdown-body ul, 
.markdown-body ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.markdown-body li {
    margin-bottom: 0.5rem;
}

.markdown-body strong {
    color: white;
    font-weight: 600;
}

.markdown-body pre,
.markdown-body code {
    background-color: var(--bg-surface-elevated);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.markdown-body code {
    padding: 0.2em 0.4em;
    font-size: 0.85em;
    color: #818cf8;
}

.markdown-body blockquote {
    border-left: 4px solid var(--accent-primary);
    padding-left: 1rem;
    color: var(--text-secondary);
    margin-left: 0;
    margin-bottom: 1.5rem;
}

.markdown-body pre code {
    padding: 1rem;
    display: block;
    overflow-x: auto;
    color: var(--text-primary);
    border: none;
}

/* Competitor UI Cards */
.competitor-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
    margin-bottom: 2rem;
}

.competitor-card {
    background-color: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
}

.competitor-card:hover { border-color: rgba(99, 102, 241, 0.4); box-shadow: 0 4px 20px rgba(0,0,0,0.2); }

.competitor-card .comp-name { font-weight: 600; font-size: 1.05rem; margin-bottom: 0.5rem; color: white; }
.competitor-card .comp-rating { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; margin-bottom: 0.75rem; color: var(--text-secondary); }
.competitor-card .comp-rating .stars { color: #fbbf24; font-weight: 600; }
.competitor-card .comp-links { margin-top: auto; display: flex; gap: 0.5rem; }
.competitor-card .comp-links a { 
    font-size: 0.8rem; padding: 0.35rem 0.75rem; border-radius: 4px; 
    background: rgba(255,255,255,0.05); color: var(--text-secondary); 
    text-decoration: none; border: 1px solid var(--border-color); transition: var(--transition-fast);
}
.competitor-card .comp-links a:hover { background: var(--accent-primary); color: white; border-color: var(--accent-primary); }

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.4);
}

/* Spinner */
.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s ease-in-out infinite;
}

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

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

@media (max-width: 900px) {
    .app-container {
        flex-direction: column;
        height: 100vh;
        border-radius: 0;
        border: none;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
}

/* Print/PDF Export Styling */
@media print {
    body {
        margin: 0;
        padding: 0;
        background: white !important;
        background-image: none !important;
    }
    .sidebar,
    .output-header,
    .editor-gutter {
        display: none !important;
    }
    .app-container {
        border: none;
        box-shadow: none;
        max-width: 100%;
        height: auto;
        overflow: visible;
    }
    .output-area, .editor-container, .content-wrapper {
        overflow: visible;
        background: white !important;
        color: black !important;
    }
    .content-wrapper {
        padding: 0;
    }
    .markdown-body {
        color: black !important;
    }
    .markdown-body h1,
    .markdown-body h2,
    .markdown-body h3,
    .markdown-body strong {
        color: black !important;
    }
    .markdown-body pre,
    .markdown-body code {
        background-color: #f3f4f6 !important;
        color: #1f2937 !important;
        border: 1px solid #e5e7eb !important;
    }
    .markdown-body blockquote {
        color: #4b5563 !important;
    }
    /* Competitor Table Printing */
    .competitor-card {
        page-break-inside: avoid;
        border: 1px solid #ccc !important;
        background: #fafafa !important;
        color: black !important;
    }
    .competitor-card a {
        color: #2563eb !important;
    }
    .competitor-card .rating {
        color: #d97706 !important;
    }
}