:root{--bg: #f0f2f5;--card-bg: #ffffff;--border-subtle: #e4e6eb;--text-main: #050505;--text-muted: #65676b;--primary: #1877f2;--primary-dark: #166fe5;--accent: #42b72a}.theme-dark{--bg: #18191a;--card-bg: #242526;--border-subtle: #3a3b3c;--text-main: #e4e6eb;--text-muted: #b0b3b8;--primary: #2d88ff;--primary-dark: #1877f2;--accent: #45bd62}*{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text-main)}button,input{font-family:inherit}button{cursor:pointer}.app-shell{display:flex;flex-direction:column;min-height:100vh}.nav{height:56px;background:var(--card-bg);border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;padding:0 16px;position:sticky;top:0;z-index:10;box-shadow:0 2px 4px 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8px;border-radius:8px;border:none;background:transparent;text-align:left}.friend-item:hover{background:#f0f2f5}.friend-meta{display:flex;flex-direction:column;gap:2px}.friend-name{font-size:14px;font-weight:600}.friend-subtext{font-size:12px;color:var(--text-muted)}.profile-actions-row{margin-top:10px;display:flex;gap:8px}.profile-message-btn{padding:6px 16px;border-radius:999px;border:none;background:var(--primary);color:#fff;font-weight:600;font-size:14px}.profile-secondary-btn{padding:6px 16px;border-radius:999px;border:1px solid var(--border-subtle);background:transparent;font-size:14px}.profile-card{background:var(--card-bg);border-radius:8px;box-shadow:0 1px 2px #00000014;border:1px solid var(--border-subtle);padding:12px 16px 14px}.profile-section-title{font-size:16px;margin-bottom:8px}.profile-details{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px;font-size:14px}.profile-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.profile-section-link{border:none;background:transparent;color:var(--primary);font-size:13px;cursor:pointer}.media-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.media-grid-item{border-radius:8px;overflow:hidden}.media-grid-thumb{height:90px;display:flex;align-items:flex-end;padding:6px;color:#fff;font-size:12px}.media-grid-thumb--photo{background:linear-gradient(135deg,#ff9a9e,#fad0c4)}.media-grid-thumb--video{background:linear-gradient(135deg,#4facfe,#00f2fe)}.media-grid-thumb--reel{background:linear-gradient(135deg,#f6d365,#fda085)}.media-grid-icon{margin-right:4px;font-size:13px}.media-grid-label{text-shadow:0 1px 3px rgba(0,0,0,.35)}.avatar{border-radius:999px;background:#d8dadf;display:flex;align-items:center;justify-content:center;font-weight:600}.avatar--small{width:32px;height:32px}.avatar--medium{width:40px;height:40px}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;gap:48px;padding:32px 16px}.auth-brand{max-width:360px}.auth-logo{font-size:54px;color:var(--primary);font-weight:800}.auth-tagline{margin-top:8px;font-size:20px}.auth-card{background:var(--card-bg);padding:16px;border-radius:8px;box-shadow:0 8px 24px #0000001a;width:360px}.auth-form{display:flex;flex-direction:column;gap:10px}.auth-form input{padding:12px;border-radius:6px;border:1px solid var(--border-subtle)}.auth-primary-btn{padding:10px;border-radius:6px;border:none;background:var(--primary);color:#fff;font-weight:600;font-size:16px}.auth-primary-btn--full{width:100%}.auth-secondary-btn{display:inline-block;width:100%;text-align:center;padding:10px;border-radius:6px;border:none;background:var(--accent);color:#fff;font-weight:600;font-size:16px;text-decoration:none}.auth-link-btn{border:none;background:transparent;color:var(--primary);font-size:14px}.auth-link-under{display:inline-block;margin-top:8px;font-size:14px;color:var(--primary);text-decoration:none}.auth-link-under:hover{text-decoration:underline}.auth-divider{height:1px;background:var(--border-subtle);margin:6px 0}.auth-error{color:#d93025;font-size:13px}.auth-title{font-size:24px}.auth-subtitle{font-size:14px;color:var(--text-muted);margin-bottom:4px}@media (max-width: 960px){.app-main{grid-template-columns:1fr}.sidebar,.rightbar{display:none}}@media (max-width: 768px){.auth-page{flex-direction:column;align-items:center}.auth-brand{text-align:center}}