/* ============================================
   Blueprint:flow - Master Stylesheet (Full)
   ============================================ */

:root {
    --color-bg: #0a0a0f;
    --color-bg-secondary: #111118;
    --color-bg-tertiary: #1a1a24;
    --color-text: #e8e8ec;
    --color-text-muted: #6b6b7b;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-border: #2a2a3a;
    --color-success: #22c55e;
    --color-error: #ef4444;
    
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

/* --- Base & Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { 
    font-family: var(--font-sans); 
    background-color: var(--color-bg);
    background: linear-gradient(to right, #080b10, #0f172a, #080b10);
    color: var(--color-text); 
    line-height: 1.6; 
    min-height: 100vh; 
    display: flex; 
    flex-direction: column; 
}
a { color: var(--color-accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-accent-hover); }

/* --- Typography --- */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.3; margin-bottom: 1rem; color: var(--color-text); }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

code { font-family: var(--font-mono); background: var(--color-bg-tertiary); padding: 0.2em 0.4em; border-radius: var(--radius-sm); font-size: 0.9em; }
pre { background: var(--color-bg-tertiary); padding: 1.5rem; border-radius: var(--radius-md); overflow-x: auto; margin: 1.5rem 0; border: 1px solid var(--color-border); }
pre code { background: none; padding: 0; }

/* --- Layout --- */
.container { max-width: 900px; margin: 0 auto; padding: 0 1.5rem; width: 100%; }
.main { flex: 1; padding: 3rem 0; }

/* --- Header & Logo --- */
.header { background: var(--color-bg-secondary); border-bottom: 1px solid var(--color-border); padding: 1.5rem 0; position: sticky; top: 0; z-index: 100; }
.header-content { display: flex; justify-content: space-between; align-items: center; }

.logo { display: flex; align-items: center; gap: 0.75rem; }
.logo-icon { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; color: var(--color-accent); }
.logo-text { font-family: var(--font-mono); font-size: 1.25rem; font-weight: 600; color: var(--color-text); }
.logo-text span { color: var(--color-accent); }

.nav { display: flex; gap: 2rem; }
.nav a { color: var(--color-text-muted); font-size: 0.95rem; font-weight: 500; }
.nav a:hover, .nav a.active { color: var(--color-text); }

/* --- Hero --- */
.hero { text-align: center; padding: 4rem 0; border-bottom: 1px solid var(--color-border); margin-bottom: 3rem; }
.hero h1 { font-family: var(--font-mono); font-size: 2.2rem; }
.hero h1 span { color: var(--color-accent); }
.hero p { font-size: 1.25rem; max-width: 600px; margin: 0 auto; color: var(--color-text-muted); }

/* --- Post Cards & Lists --- */
.posts-list { display: flex; flex-direction: column; gap: 2rem; }
.post-card { background: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 2rem; transition: var(--transition); }
.post-card:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.post-card-title { font-size: 1.5rem; margin-bottom: 0.5rem; }
.post-card-title a { color: var(--color-text); }
.post-card-meta { display: flex; gap: 1.5rem; font-size: 0.875rem; color: var(--color-text-muted); font-family: var(--font-mono); }
.post-card-meta span { display: flex; align-items: center; gap: 0.5rem; filter: grayscale(100%); opacity: 0.7; }
.post-card-excerpt { color: var(--color-text-muted); margin: 1rem 0; }

/* --- Single Post Content --- */
.post-header { margin-bottom: 3rem; padding-bottom: 2rem; border-bottom: 1px solid var(--color-border); }
.post-content { font-size: 1.1rem; line-height: 1.8; }
.post-content h2 { margin-top: 2.5rem; }
.post-content h3 { margin-top: 2rem; }
.post-content blockquote { border-left: 3px solid var(--color-accent); padding-left: 1.5rem; margin: 1.5rem 0; font-style: italic; color: var(--color-text); }
.post-content ul, .post-content ol { margin: 1.5rem 0; padding-left: 2rem; color: var(--color-text-muted); }
.post-content pre {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 2rem 0;
}

.post-content code {
    font-family: var(--font-mono);
    color: var(--color-accent);
    background: rgba(59, 130, 246, 0.1);
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-sm);
}

.post-content pre code {
    background: none;
    padding: 0;
    color: var(--color-text);
}
.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 1.5rem 0;
    border: 1px solid var(--color-border);
}

/* --- Tags --- */
.tags-container { display: inline-flex; gap: 8px; vertical-align: middle; }
.tag-pill { background: var(--color-bg-tertiary); border: 1px solid var(--color-border); color: var(--color-accent); padding: 2px 8px; border-radius: var(--radius-sm); font-size: 0.75rem; font-family: var(--font-mono); }
.tag-pill-active { background: var(--color-accent); color: white; border: none; }

/* --- Admin & Forms --- */
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; padding-bottom: 1rem; border-bottom: 1px solid var(--color-border); }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th { color: var(--color-text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; padding: 1rem; border-bottom: 1px solid var(--color-border); }
.admin-table td { padding: 1rem; border-bottom: 1px solid var(--color-border); }

.form-group { margin-bottom: 1.5rem; }
.form-label { display: block; margin-bottom: 0.5rem; font-size: 0.9rem; color: var(--color-text-muted); font-family: var(--font-mono); }
.form-input, .form-textarea, .form-select { width: 100%; padding: 0.75rem; background: var(--color-bg-tertiary); border: 1px solid var(--color-border); border-radius: var(--radius-md); color: var(--color-text); font-family: var(--font-sans); }
.form-textarea { min-height: 300px; font-family: var(--font-mono); resize: vertical; }

/* --- Buttons --- */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.75rem 1.5rem; border-radius: var(--radius-md); font-weight: 500; cursor: pointer; transition: var(--transition); border: none; font-size: 0.95rem; }
.btn-primary { background: var(--color-accent); color: white; }
.btn-secondary { background: var(--color-bg-tertiary); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-danger { background: var(--color-error); color: white; }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.8rem; }

/* --- Footer --- */
.footer { background: var(--color-bg-secondary); border-top: 1px solid var(--color-border); padding: 2rem 0; margin-top: auto; }
.footer-content { display: flex; justify-content: space-between; align-items: center; font-size: 0.875rem; color: var(--color-text-muted); }

/* --- Alerts & Helpers --- */
.alert { padding: 1rem; border-radius: var(--radius-md); margin-bottom: 1.5rem; border: 1px solid transparent; }
.alert-success { background: rgba(34, 197, 94, 0.1); border-color: var(--color-success); color: var(--color-success); }
.alert-error { background: rgba(239, 68, 68, 0.1); border-color: var(--color-error); color: var(--color-error); }
.text-center { text-align: center; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .header-content, .admin-header, .footer-content { flex-direction: column; gap: 1rem; text-align: center; }
}
/* Utility Classes */
.text-right { text-align: right; }
.admin-actions { display: flex; gap: 10px; }
.login-card { max-width: 400px; margin: 4rem auto; }

/* --- Admin Upload Zone --- */
.upload-zone {
    background: var(--color-bg-tertiary);
    border: 2px dashed var(--color-border);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-top: 1rem;
}
.upload-result {
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-success);
}
.upload-error {
    border-color: var(--color-error);
    color: var(--color-error);
}