:root{color-scheme:light;font-family:Inter,system-ui,sans-serif;font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;--brand: #4f46e5;--brand-hover: #4338ca;--brand-soft: #eef2ff;--accent-teal: #0d9488;--accent-teal-soft: #ccfbf1;--bg: #fafafa;--bg-surface: #ffffff;--bg-muted: #f4f4f5;--fg: #18181b;--fg-secondary: #52525b;--fg-muted: #a1a1aa;--border: #e4e4e7;--border-strong: #d4d4d8;--radius: 10px;--radius-lg: 14px;--radius-xl: 20px;--shadow: 0 1px 3px rgba(0,0,0,.06);--shadow-md: 0 4px 20px rgba(79,70,229,.08);--header-h: 64px;--sidebar-w: 260px;--content-max: 1200px}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--fg);background:var(--bg)}a{color:var(--brand);text-decoration:none}a:hover{color:var(--brand-hover)}.app-shell{min-height:100vh;display:flex;flex-direction:column}.site-header{position:sticky;top:0;z-index:100;height:var(--header-h);padding:0 24px;display:flex;align-items:center;gap:32px;background:var(--bg-surface);border-bottom:1px solid var(--border)}.site-header__logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.03em;color:var(--fg);flex-shrink:0}.site-header__logo:hover{text-decoration:none;color:var(--fg)}.site-header__logo-mark{width:36px;height:36px;border-radius:var(--radius);background:linear-gradient(135deg,var(--brand) 0%,var(--accent-teal) 100%);display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800}.site-header__nav{display:flex;align-items:center;gap:4px;flex:1}.site-nav-link{padding:8px 14px;border-radius:var(--radius);font-size:14px;font-weight:500;color:var(--fg-secondary);text-decoration:none;transition:background .12s,color .12s}.site-nav-link:hover{background:var(--bg-muted);color:var(--fg);text-decoration:none}.site-nav-link.active{background:var(--brand-soft);color:var(--brand)}.site-header__actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.site-header__user{display:flex;align-items:center;gap:8px;padding:4px 12px 4px 4px;border-radius:999px;border:1px solid var(--border);font-size:13px;color:var(--fg-secondary)}.site-header__avatar{width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:600}.status-pip{width:8px;height:8px;border-radius:50%;background:var(--border-strong)}.status-pip--on{background:#22c55e}.app-content{flex:1;width:100%;max-width:var(--content-max);margin:0 auto;padding:32px 24px 64px}.hero-banner{position:relative;padding:40px 36px;margin-bottom:32px;border-radius:var(--radius-xl);background:linear-gradient(135deg,#312e81,#4f46e5 45%,#0d9488);color:#fff;overflow:hidden}.hero-banner:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 80% 20%,rgba(255,255,255,.12),transparent 50%);pointer-events:none}.hero-banner__inner{position:relative;z-index:1;max-width:560px}.hero-banner h1{margin:0 0 12px;font-size:clamp(1.5rem,3vw,2rem);font-weight:700;letter-spacing:-.03em;line-height:1.2}.hero-banner p{margin:0 0 24px;font-size:15px;line-height:1.55;opacity:.9}.hero-banner .xp-btn--light{background:#fff;color:var(--brand)}.hero-banner .xp-btn--light:hover{background:#f4f4f5}.category-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;margin-bottom:28px;scrollbar-width:none}.category-row::-webkit-scrollbar{display:none}.category-pill{flex-shrink:0;display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border:1px solid var(--border);border-radius:999px;background:var(--bg-surface);font-size:14px;font-weight:500;color:var(--fg-secondary);cursor:pointer;transition:border-color .12s,box-shadow .12s,color .12s;text-decoration:none}.category-pill:hover{border-color:var(--border-strong);box-shadow:var(--shadow);color:var(--fg);text-decoration:none}.category-pill--active{border-color:var(--brand);background:var(--brand-soft);color:var(--brand);box-shadow:var(--shadow-md)}.category-pill__dot{width:8px;height:8px;border-radius:50%}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:16px}.section-head h2{margin:0;font-size:18px;font-weight:600;letter-spacing:-.02em}.section-head span{font-size:13px;color:var(--fg-muted)}.page-head{margin-bottom:28px}.page-head h1{margin:0 0 6px;font-size:26px;font-weight:700;letter-spacing:-.03em}.page-head p{margin:0;color:var(--fg-secondary);font-size:15px}.catalog-layout{display:grid;grid-template-columns:var(--sidebar-w) 1fr;gap:32px;align-items:start}.filter-sidebar{position:sticky;top:calc(var(--header-h) + 24px);padding:20px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg)}.filter-sidebar h3{margin:0 0 16px;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--fg-muted)}.filter-group{margin-bottom:20px}.filter-group label{display:block;margin-bottom:6px;font-size:13px;font-weight:500;color:var(--fg-secondary)}.filter-group input,.filter-group select{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius);font:inherit;font-size:14px;background:var(--bg)}.filter-group input:focus,.filter-group select:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}.opportunity-list{display:flex;flex-direction:column;gap:12px}.opportunity-card{display:grid;grid-template-columns:72px 1fr auto;gap:16px;align-items:center;padding:18px 20px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s}.opportunity-card:hover{border-color:var(--brand);box-shadow:var(--shadow-md);text-decoration:none;color:inherit}.opportunity-card__icon{width:72px;height:72px;border-radius:var(--radius);display:grid;place-items:center;font-size:22px;font-weight:700;color:#fff;flex-shrink:0}.opportunity-card__body{min-width:0}.opportunity-card__type{font-size:12px;font-weight:600;color:var(--brand);text-transform:uppercase;letter-spacing:.03em;margin-bottom:4px}.opportunity-card__title{margin:0 0 6px;font-size:16px;font-weight:600;letter-spacing:-.02em;line-height:1.3}.opportunity-card__org{margin:0 0 8px;font-size:14px;color:var(--fg-secondary)}.opportunity-card__tags{display:flex;flex-wrap:wrap;gap:6px}.opportunity-card__meta{text-align:right;font-size:13px;color:var(--fg-muted);white-space:nowrap}.tag{display:inline-block;padding:3px 8px;border-radius:6px;font-size:12px;font-weight:500;background:var(--bg-muted);color:var(--fg-secondary)}.tag--brand{background:var(--brand-soft);color:var(--brand)}.tag--teal{background:var(--accent-teal-soft);color:var(--accent-teal)}.tag--success{background:#dcfce7;color:#15803d}.tag--warn{background:#fef3c7;color:#b45309}.tag--danger{background:#fee2e2;color:#b91c1c}.xp-btn,.yt-btn,.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:var(--radius);border:1px solid transparent;font:inherit;font-size:14px;font-weight:500;cursor:pointer;text-decoration:none;transition:background .12s,border-color .12s,transform 80ms}.xp-btn:active:not(:disabled),.btn:active:not(:disabled){transform:scale(.98)}.xp-btn:disabled,.btn:disabled{opacity:.5;cursor:not-allowed}.xp-btn--primary,.yt-btn--filled,.btn{background:var(--brand);color:#fff;border-color:var(--brand)}.xp-btn--primary:hover:not(:disabled),.yt-btn--filled:hover:not(:disabled),.btn:hover:not(:disabled){background:var(--brand-hover);text-decoration:none;color:#fff}.xp-btn--outline,.yt-btn--outline,.btn--secondary{background:var(--bg-surface);color:var(--fg);border-color:var(--border-strong)}.xp-btn--outline:hover:not(:disabled),.btn--secondary:hover:not(:disabled){background:var(--bg-muted);text-decoration:none}.xp-btn--ghost,.yt-btn--text{background:transparent;color:var(--brand)}.xp-btn--ghost:hover:not(:disabled){background:var(--brand-soft)}.xp-btn--danger,.btn--danger{background:#dc2626;color:#fff;border-color:#dc2626}.xp-btn--sm,.yt-btn--sm,.btn--sm{padding:6px 12px;font-size:13px}.xp-btn--lg{padding:12px 22px;font-size:15px}.btn-group{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:28px}.stat-box{padding:16px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg)}.stat-box strong{display:block;font-size:28px;font-weight:700;letter-spacing:-.03em;color:var(--brand)}.stat-box span{font-size:12px;color:var(--fg-muted)}.ui-field,.form-group{margin-bottom:16px}.ui-field__label,.form-group label{display:block;margin-bottom:6px;font-size:13px;font-weight:500;color:var(--fg-secondary)}.ui-input,.ui-select,.ui-textarea,.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);font:inherit;background:var(--bg-surface)}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.detail-panel{padding:24px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:24px}.auth-layout{max-width:440px;margin:0 auto}.ui-glass,.ui-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}.ui-card--link{display:block;color:inherit;text-decoration:none}.ui-card--link:hover{border-color:var(--brand);text-decoration:none}.card-grid{display:flex;flex-direction:column;gap:12px}.feed-page{padding:0}.feed-grid{display:flex;flex-direction:column;gap:12px}.ui-alert,.alert--error,.alert--success{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px;font-size:14px}.ui-alert--error,.alert--error{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}.ui-alert--success,.alert--success{background:#f0fdf4;color:#15803d;border:1px solid #bbf7d0}.ui-empty,.empty-state,.feed-empty,.feed-error{padding:48px 24px;text-align:center;color:var(--fg-secondary);background:var(--bg-surface);border:1px dashed var(--border);border-radius:var(--radius-lg)}.feed-error{color:#b91c1c;border-color:#fecaca;background:#fef2f2}.ui-loading{display:flex;align-items:center;gap:12px;padding:32px;color:var(--fg-secondary)}.ui-loading__spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--brand);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.section-title{margin:28px 0 12px;font-size:16px;font-weight:600}.page-header__title,.page-title{margin:0;font-size:26px;font-weight:700;letter-spacing:-.03em}.page-header__subtitle,.page-subtitle{margin:6px 0 0;color:var(--fg-secondary)}.ui-badge,.badge{display:inline-block;padding:3px 8px;border-radius:6px;font-size:12px;font-weight:500}.badge--published,.badge--accepted,.ui-badge--success{background:#dcfce7;color:#15803d}.badge--pending,.ui-badge--warning{background:#fef3c7;color:#b45309}.badge--rejected,.ui-badge--danger{background:#fee2e2;color:#b91c1c}.badge--draft,.ui-badge--neutral{background:var(--bg-muted);color:var(--fg-secondary)}.ui-badge--accent{background:var(--brand-soft);color:var(--brand)}.toast-stack,.toast-container{position:fixed;bottom:24px;right:24px;z-index:200;display:flex;flex-direction:column;gap:8px;max-width:360px}.toast-item,.toast{padding:14px 16px;background:var(--fg);color:#fff;border-radius:var(--radius);font-size:14px;box-shadow:0 8px 24px #00000026}.stat-card{padding:16px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center}.stat-card strong{display:block;font-size:24px;font-weight:700}.stat-card span{font-size:12px;color:var(--fg-muted)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:24px}.welcome-strip{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;margin-bottom:24px;background:var(--brand-soft);border-radius:var(--radius-lg);font-size:14px}.catalog-header{display:flex;align-items:baseline;gap:12px;margin-bottom:20px}.catalog-header h1{margin:0;font-size:22px;font-weight:600}.catalog-header__count{font-size:13px;color:var(--fg-muted)}.rating-stars{color:#f59e0b}@media (max-width: 900px){.catalog-layout{grid-template-columns:1fr}.filter-sidebar{position:static}.opportunity-card{grid-template-columns:56px 1fr}.opportunity-card__meta{display:none}.opportunity-card__icon{width:56px;height:56px;font-size:18px}.site-header{padding:0 16px;gap:12px}.site-header__nav{display:none}.app-content{padding:20px 16px 48px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}