/* Base — Reset, layout, main content area */

:root {
    /* Brand */
    --color-accent: #667eea;
    --color-accent-dark: #5a6fd6;
    --color-accent-light: #e0e7ff;
    --color-accent-bg: #eef1ff;
    --color-accent-bg-hover: #e4e9ff;
    --gradient-brand: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

    /* Grey scale (unified) */
    --gray-900: #24292e;
    --gray-800: #1a1f36;
    --gray-700: #4a5568;
    --gray-600: #586069;
    --gray-500: #6a737d;
    --gray-400: #a0aec0;
    --gray-300: #d1d5da;
    --gray-200: #e2e6ea;
    --gray-100: #f6f8fa;
    --gray-50: #f0f2f5;

    /* Semantic colors */
    --color-text: #24292e;
    --color-text-secondary: #586069;
    --color-text-muted: #6a737d;
    --color-bg: #f0f2f5;
    --color-surface: #ffffff;
    --color-border: #e2e6ea;
    --color-border-light: #eaecef;
    --color-link: #0366d6;
    --color-link-hover: #005cc5;

    /* Active state */
    --color-active-bg: var(--color-accent-light);
    --color-active-text: var(--color-accent-dark);
    --color-active-border: var(--color-accent);

    /* Error */
    --color-error-bg: #fef2f2;
    --color-error-border: #ef4444;
    --color-error-text: #dc2626;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-accent: 0 8px 24px rgba(102, 126, 234, 0.15);

    /* Border-radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 50px;

    /* Transitions */
    --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 0.15s;
    --duration-normal: 0.2s;
    --duration-slow: 0.3s;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    background: transparent;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin-top: 0;
}

.content-wrapper {
    display: flex;
    flex: 1;
    align-items: flex-start;
    position: relative;
    min-height: 100vh;
    gap: 24px;
}

.main-content {
    flex: 1;
    overflow-x: hidden;
    min-width: 0;
    order: 2;
    align-self: stretch;
    container-type: inline-size;
    container-name: main-content;
}

main {
    padding: 32px 48px;
    min-height: 100vh;
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    margin-top: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm), 0 4px 16px rgba(0, 0, 0, 0.06);
}

.loading {
    text-align: center;
    padding: 40px;
    font-size: 1.2em;
    color: var(--color-accent);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.error {
    padding: 20px;
    background: var(--color-error-bg);
    border-left: 4px solid var(--color-error-border);
    border-radius: var(--radius-sm);
    color: var(--color-error-text);
    margin-bottom: 20px;
}

.hidden {
    display: none;
}

.markdown-content {
    max-width: 100%;
    word-wrap: break-word;
}

/* Responsive — base layout */
@media (max-width: 768px) {
    .main-content {
        width: 100%;
    }

    main {
        padding: 20px 15px;
        margin-top: 10px;
        margin-bottom: 10px;
        border-radius: 0;
    }

    body {
        overflow-x: hidden;
    }

    .container {
        min-height: 100vh;
    }
}